Doctors & patients are saying about 'A-Fib.com'...


"A-Fib.com is a great web site for patients, that is unequaled by anything else out there."

Dr. Douglas L. Packer, MD, FHRS, Mayo Clinic, Rochester, MN

"Jill and I put you and your work in our prayers every night. What you do to help people through this [A-Fib] process is really incredible."

Jill and Steve Douglas, East Troy, WI 

“I really appreciate all the information on your website as it allows me to be a better informed patient and to know what questions to ask my EP. 

Faye Spencer, Boise, ID, April 2017

“I think your site has helped a lot of patients.”

Dr. Hugh G. Calkins, MD  Johns Hopkins,
Baltimore, MD


Doctors & patients are saying about 'Beat Your A-Fib'...


"If I had [your book] 10 years ago, it would have saved me 8 years of hell.”

Roy Salmon, Patient, A-Fib Free,
Adelaide, Australia

"This book is incredibly complete and easy-to-understand for anybody. I certainly recommend it for patients who want to know more about atrial fibrillation than what they will learn from doctors...."

Pierre Jaïs, M.D. Professor of Cardiology, Haut-Lévêque Hospital, Bordeaux, France

"Dear Steve, I saw a patient this morning with your book [in hand] and highlights throughout. She loves it and finds it very useful to help her in dealing with atrial fibrillation."

Dr. Wilber Su,
Cavanaugh Heart Center, 
Phoenix, AZ

"...masterful. You managed to combine an encyclopedic compilation of information with the simplicity of presentation that enhances the delivery of the information to the reader. This is not an easy thing to do, but you have been very, very successful at it."

Ira David Levin, heart patient, 
Rome, Italy

"Within the pages of Beat Your A-Fib, Dr. Steve Ryan, PhD, provides a comprehensive guide for persons seeking to find a cure for their Atrial Fibrillation."

Walter Kerwin, MD, Cedars-Sinai Medical Center, Los Angeles, CA


Diagnosis

Apple Watch 4: Do ECG Readings Give A-Fib Patients a False Sense of Security?

We received a couple of emails about the new Apple Watch 4. As many A-Fib patients may be aware, recently Apple unveiled the next generation of Apple Watch which includes a second generation optical heart sensor.

Among several interesting features, it can generate an ECG tracing similar to that of a single-lead electrocardiograph.

In her Sept. 14, 2018 editorial on Medscape.com, ECG Readings From the Apple Watch? This Doctor Is Leery, Dr. Hansa Bhargava gives her perspective of this feature for those diagnosed with atrial fibrillation. She writes that she finds the Apple Watch’s ability to do a one-lead ECG interesting but has some reservations.

“…Here’s what I worry about: the false sense of security that a person could have.

Apple Watch 4 screens

Being able to do a one-lead ECG is definitely interesting, but does it always help? Here’s a scenario. A 40-year-old runner starts feeling dizzy, lightheaded, and has chest pain. He worries but remembers that there is an ECG function on his watch. He proceeds to do the ECG which then reads “normal.” Because of this he decides to continue to run.
What he doesn’t know is that this is only a one-lead ECG, and even though it seems normal, it is an isolated data point; more information is needed to diagnose what is going on. What if he is having angina? In fact, 30% of cardiovascular events happen to people under the age of 65. One lead on an ECG could certainly miss this; in fact, even a 12-lead ECG, if the only isolated data point, could miss this.

Dr. Andrew Moore, an emergency department physician at the Oregon Health and Science University is also skeptical of the Apple Watch 4 ECG feature:

“The ECG thing is a little bit overhyped in terms of what it will really provide. …The tech that Apple is working with is very rudimentary compared to what we’d do for someone in a hospital or health care setting.” 

While the watch can detect changes in the patterns of a person’s heart rate such as too fast, too slow, or beating irregularly—signifying A-Fib, the watch doesn’t diagnose a medical issue.

Apple Watch and Other DIY Heart Rate Monitors

Guide to HRMs and Handheld ECG monitors

Keep in mind these doctors’ concerns apply to all consumer heart rate monitors (HRM), those with optical heart sensors and those with electrode-containing monitors.

Wrist vs. Chest Bands: Wrist-band optical heart-rate monitors (like Apple Watch 4) may be more convenient or comfortable and have advanced over the years. But researchers found that electrode-containing chest-strap monitors were always more accurate than their wrist counterparts and more reliable and consistent. To learn about this research, read When Tracking Your Heart: Is a Wrist-Worn Heart Rate Monitor Just as Good as a Chest Strap Monitor?

Blue-tooth chest-band with smartphone app

As an A-Fib patient, when monitoring your heart beat rate is important to you (while exercising or doing heavy work), you’ll want to stick with an electrode-containing monitor (chest band-style, shirts or sports bras with built-in electrode pads, etc.).

For help selecting a HRM, see our article: Guide to DIY Heart Rate Monitors (HRMs) & Handheld ECG Monitors (Part I). Also take a look at Steve’s list on Amazon.com: Top Picks: DIY Heart Rate Monitors for A-Fib Patients.

Keep in mind: None of these DIY heart rate monitors are diagnostic tools. But they can be helpful once you know you have A-Fib, A-Flutter or suffer from PVCs, PACs, etc. Just don’t make medical decisions based on their readings. See your doctor if you have any concerns or symptoms.

Remember: None of these DIY heart rate monitors are diagnostic tools

Resource for this article
Hansa Bhargava, MD. ECG Readings From the Apple Watch? This Doctor Is Leery: The Apple Watch Gets ‘Medical’. Medscape/NEWS & PERSPECTIVE.  September 14, 2018. https://www.medscape.com/viewarticle/902001?src=wnl_edit_tpal&uac=159481AX&impID=1739393&faf=1

Hauk, C. Data Collected by Apple Heart Study Used to Obtain Apple Watch Series 4 ECG Clearance from FDA. Mac trast.com. Sep 14, 2018.
https://www.mactrast.com/2018/09/data-collected-by-apple-heart-study-used-to-obtain-apple-watch-series-4-ecg-clearance-from-fda/

Has My A-Fib Returned? I Get an Insertable Wireless Monitor to Find Out

Update 5 pm (see below): During a recent medical exam, one of my doctors (not a cardiologist) detected an irregular heart beat. I didn’t feel any symptoms before, during or after the appointment, so I wasn’t alarmed. But I did make an appointment with my EP.

Medtronic Reveal LINQ ICM

When I met with my EP, he took an ECG but didn’t find A-Fib (thank goodness). But, just to be sure, he recommended implanting a tiny wireless heart monitor so he can review my heart activity over time.

I Get a Reveal LINQ Insertable Cardiac Monitor

So yesterday, as an outpatient, I had a tiny cardiac monitor implanted just under the skin near my heart. The minimally invasive procedure took the doctor about 2 minutes to do. (Most of my time at the hospital was spent doing paperwork).

My doctor used the Medtronic Reveal LINQ Insertable Cardiac Monitor (ICM)—one of the world’s smallest cardiac monitors—the device is approximately one-third the size of a AAA battery.

MyCareLink transmitter

The Reveal LINQ System includes a bedside unit that collects heart rhythm data from the ICM and wirelessly sends it to my doctor every evening.

The device allows my cardiologist to continuously monitor my heart for up to 3 years.

Setup to transmit: I got it all set up and it’s working. But I don’t expect to get any feedback from my EP any time soon. I’ll publish an update when I have something to report.

My incision for the ICM

Update 5 pm: I forgot to mention that I had no pain with this procedure. They used some numbing agent on the incision area, but I’ve had no pain afterwards (it’s now about 36 hours since the insertion). No sutures. They applied a clear bandage that holds the tissue together while healing.

There’s no visible sign of the device. If I press the area I can barely feel the outline of the ICM. It’s possible this will diminish with time as the surrounding tissue encases it.

I’ll write more:  I’ll talk with my EP in a couple of weeks when he has reviewed some of the data received via the MyCareLink wireless transmitter. (I assume he has some data processing feature that will alert him before that if the readings are outside normal specs.)

VIDEO: The Insertion Procedure

An animated video (music, no narration) by Medtronic, shows how the Reveal LINQ ICM monitor is inserted through a tiny incision just under the skin near the heart. Special tools are used to make a small incision and another to hold the ICM and “plunge” it under the skin. About 2:45 min.

To enlarge video: click and start the video. At the lower right, click on the frame icon. To exit, click again.

Updated Article: Guide to DIY Heart Rate Monitors (HRMs) & Handheld ECG Monitors

We’ve updated our Guide to DIY Heart Rate Monitors (HRMs) & Handheld ECG Monitors (Part I) with new models of chest bands/wristwatches sets, Bluetooth versions and wearable technologies.

A consumer heart rate monitor (HRM) is useful when Atrial Fibrillation patients want to monitor their heart rate and pulse when exercising or when performing physically demanding activities.

To our section on handheld real-time ECG monitors, we added the Contec PM-10. Our recent review read in part:

Illustration: Three ways to hold the Contec PM-10 when taking an ECG scan at A-Fib.com

Three ways to hold the Contec PM-10 when taking an ECG scan

“The Contec PM10 (about $79 on Amazon.com) is a very easy-to-use small 4 oz. unit that can track a single channel ECG waveform. You can observe the scan live, then download the recordings (up to 30) to your computer or smartphone for review and print to share with your doctor.” Read the full review.

Also updated: WEARABLE TECHNOLOGY WITH WIRELESS SENSORS

From Sensoria Fitness

“Wearable technology” offers a new option for those who find a chest strap uncomfortable or chafing. Instead of the chestband, these workout clothes have sensors built-in. Just snap on your heart rate sensor from your chestband. Starting at $75.

♥  Sensoria Fitness Men’s T-Shirt with standard sensor snaps (no heart rate sensor)
♥  Sensoria Fitness Sports Bra with standard sensor snaps (no heart rate sensor)

To read the updated article, go to: Guide to DIY Heart Rate Monitors (HRMs) & Handheld ECG Monitors (Part I)

Not to be Confused with Optical Fitness Wristbands

Optical LEDs on inside of fitness wristband

The HRM sensors/monitors in our guide work by being in contact with the skin. Don’t confuse DIY/consumer heart rate monitors with fitness bands like Fitbit or running/sport watches.

This group of fitness wristbands use an optical sensor to shine a light on your skin illuminating your capillaries to measure your pulse. Optical sensor wristbands are not accurate enough for A-Fib patients.

For more, see my article: When Tracking Your Heart: Is a Wrist-Worn Heart Rate Monitor Just as Good as a Chest Strap Monitor?

Possible Sleep Apnea? Oximeter is DIY Way to Check your Blood’s Oxygen Level

As many as 43% of A-Fib patients also suffer with obstructive sleep apnea (OSA). An easy preliminary step towards finding out if you have a sleep disorder is with the use of an inexpensive oximeter. To check your blood’s oxygen level, just insert your finger.

Fingertip Pulse Oximeter Blood Oxygen Saturation Monitor

Designed for pilots and sport enthusiasts who want to obtain their SpO2 (Blood Oxygen Saturation Levels) and PR (Pulse Rate) on the go. A-Fib patients can use one, too.

The pulse oximeter LED display faces you so it’s easy to read. (The Zacurate, Facelake and Santamedical are brands of Fingertip Pulse Oximeters. Reasonably priced, starting at $13 on Amazon.com. )

Taking a reading is easy. Just clip it on to your finger and turn it on at the press of a button. The large LED display makes viewing the results a snap.  (The one from Zacurate comes with 2 AAA batteries so that you can use it immediately.)

Your Blood’s Oxygen Level

A reading of 90% or lower means you should talk to your doctor, you may need a sleep study.

HINT for after you have taken your initial oxygen level: Take a BIG deep breath and HOLD it. You should see the reading increase as more oxygen enters your blood stream.

To learn more about sleep apnea and A-Fib, see Sleep Apnea: When Snoring Can Be Lethal and the Podcast: The Double Whammy? Sleep Apnea and Atrial Fibrillation.

Which Comes First: Sleep Apnea or Atrial Fibrillation?

Obstructive Sleep Apnea (OSA) affects about 100 million people worldwide with 85% of cases going undiagnosed.

Of Atrial Fibrillation patients, about 43% additionally suffer with Obstructive Sleep Apnea.

Could undiagnosed sleep apnea be linked to development of Atrial Fibrillation?

OSA Link to A-Fib

OSA is characterized by repetitive episodes of shallow or paused breathing during sleep that lead to a drop in blood oxygen level and disrupted sleep.

85% of Sleep Apnea cases go undiagnosed.

New research has found that patients with Sleep Apnea may be at greater risk of developing Atrial Fibrillation. Abnormal oxygen saturation level during sleep may be responsible.

Patients with OSA are more likely to have high blood pressure, or hypertension, which is a major risk factor for heart disease and other cardiovascular conditions.

Risk of New Onset A-Fib: The Clinical Cohort Study

Lead author Dr. Tetyana Kendzerska, Ph.D., of the University of Ottawa in Canada, and colleagues reviewed the records of 8,256 adults (average age 47) with suspected OSA. Individuals with any diagnosis of arrhythmias were excluded. Participants were followed for an average of 10 years. During that time, 173 developed A-Fib resulting in hospitalization.

Study Results

The reviewers found that the amount of sleep time spent with lower than normal oxygen saturation (below 90 percent) was a significant predictor of developing Atrial Fibrillation.

By contrast, the number of breathing pauses during each hour of sleep did not appear to affect A-Fib risk.

Study participants who developed A-Fib during the follow-up period were more likely to be older, current or former smokers, and have a high level of comorbidities (i.e., high blood pressure, or hypertension).

“The association between oxygen desaturation and A-Fib remains significant, suggesting that OSA can directly cause A-Fib.”

What This Means to Patients

In light of this study, a diagnosis of Atrial Fibrillation raises the question, ”Could my A-Fib have been brought on by undiagnosed Sleep Apnea?”

Sandy from Boston

Sandy from Boston and her doctor say ‘yes”. Updating her personal A-Fib story, she wrote:

“After my [successful] CryoBalloon ablation at BWH in 2014, I underwent a sleep study that revealed during REM sleep I stopped breathing an average of 32 times every hour. My physician suspected that my traumatic brain injury in 1995 caused my undiagnosed sleep apnea, which in turn caused Paroxysmal A-Fib. I have been using a CPAP ever since.”

Take Action: Sleep Apnea Can be Lethal: If you have untreated Sleep Apnea, you are at greater risk of having a more severe form of A-Fib or of not benefiting from an A-Fib treatment.

So many A-Fib patients also suffer from sleep apnea that many Electrophysiologists (EPs) routinely send their patients for a sleep apnea study.

Sleep apnea isn’t a minor health problem, and it’s a condition you can do something about. To learn more, see Sleep Apnea: When Snoring Can Be Lethal.

Resources for this article
Atrial Fibrillation and Sleep Apnea. Heart Rhythm Society. http://resources.hrsonline.org/pdf/patient/HRS_AF_SleepApnea_R3.pdf

What You Need to Know: Sleep apnea may increase atrial fibrillation risk. Brighsurf.com, May 22, 2017. https://www.brightsurf.com/news/article/052217429745/sleep-apnea-may-increase-atrial-fibrillation-risk.html

Kendzerska, T, et al. Sleep Apnea Increases the Risk of New Onset Atrial Fibrillation: A Clinical Cohort Study. American Thoracic Society. Public Release: 22-May-2017. https://www.eurekalert.org/pub_releases/2017-05/ats-sam051517.php

Whiteman, H. Obstructive sleep apnea might lead to irregular heartbeat. Medical News Today. May 23, 2017. https://www.medicalnewstoday.com/articles/317577.php

Updated Video: Zio Patch Single-Use Ambulatory Cardiac Monitor

The Zio® Patch by iRhythm is an interesting advancement in single-use ambulatory heart monitors. It looks like a big band-aid! After use, you return it to your doctor for downloading of the data.

The ZIO XT Patch

My first-hand experience: I wore one awhile back, after a prostate exam when my heart appeared to briefly be in A-Fib. As a followup, my cardiologist had me wear a Zio® Patch for two weeks. Result: no A-Fib! It turned out to be a one-time occurrence brought on by the medical test.

Updated Video: Zio® XT Patch

We’ve posted an updated video of the the Zio® XT Patch (iRhythm):

Patient with a Zio Patchvo

Description: The Zio® Patch cardiac monitor (iRhythm) looks similar to a 2-by-5-inch adhesive bandage and sticks to a patient’s chest.
In the video, Electrophysiologists, Dr Parri Dominic and Dr Ryan Jones of LSU Health Sciences Center, talk about this single-use ambulatory, continuously cardiac monitor that records for up to 14 days. No need to removal during exercise, sleeping or bathing. (2:04 min.) Posted by University Health News Network. Go to video->

Video: What is the Upright Tilt Table Test?

Do you experience dizziness or fainting spells? The upright tilt table test is a simple and effective way for collect important data for a diagnosis. In this short video, Natalie Zalmanova, NYCVA physician assistant, explains the steps of the tilt table test. With footage of in-progress test. (1:15 min.) Posted by New York Cardiovascular Associates on Oct 19, 2012.

YouTube video playback controls: When watching this video, you have several playback options. The following controls are located in the lower right portion of the frame: Turn on closed captions, Settings (speed/quality), Watch on YouTube website, and Enlarge video to full frame. Click an icon to select.

If you find any errors on this page, email us. Y Last updated: Tuesday, February 20, 2018 Return to Instructional A-Fib Videos and Animations

Video: The Zio® Patch (iRhythm) Single-Use Ambulatory Cardiac Monitor

The Zio® Patch cardiac monitor (iRhythm) looks similar to a 2-by-5-inch adhesive bandage and sticks to a patient’s chest. Electrophysiologists, Dr Parri Dominic and Dr Ryan Jones of LSU Health Sciences Center, talk about this single-use ambulatory, continuously cardiac monitor that records for up to 14 days. No need to removal during exercise, sleeping or bathing. (2:04 min.) 

Posted by University Health News Network, Sept 25, 2017.

YouTube video playback controls: When watching this video, you have several playback options. The following controls are located in the lower right portion of the frame: Turn on closed captions, Settings (speed/quality), Watch on YouTube website, and Enlarge video to full frame. Click an icon to select.

If you find any errors on this page, email us. Y Last updated: Tuesday, February 20, 2018

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More FREE ‘Learn the Heart’ ECG Online Review Courses

Recently I posted about a FREE online course ‘ECG Basics‘ at Healio/LearnTheHeart.com designed to expand your understanding of Electrocardiograms (ECG or EKG) (see our description page).

More ‘Learn the Heart’ ECG Review Courses

This week I expanded the list of Healio ECG short courses that may be of interest to Atrial Fibrillation patients. Each includes examples of 12-lead ECGs and, where appropriate, specific criteria. Check out the following:

Illustration: Healio 'Atrial Fibrillation ECG Review‘

Illustration: Healio ‘Atrial Fibrillation ECG Review‘

Atrial Fibrillation ECG Review
Atrial Flutter ECG Review
Premature Atrial Contractions (PACs) ECG Review
Left Atrial Enlargement (LAE) ECG Review
Atrioventricular Nodal Reentrant Tachycardia (AVNRT) ECG Review

ECG Quizzes, Too

You can also challenge yourself with the Beginner ECG Quiz featuring detailed answers and links to pertinent explanation pages. Or test your overall knowledge of Atrial Fibrillation with a multiple choice Atrial Fibrillation Quiz.

Steve’s Brief Overview: The EKG Signal

If you want just a brief overview of the ECG waveform signal and how to “read” an ECG tracing, go to my report, Understanding the EKG Signal.

Learn to Read Your ECG: Free Online Self-Paced Courses at Healio.com

Start with the ‘ECG Basics’ course

For the reader wanting a more extensive understanding of the Electrocardiogram and A-Fib, we offer you a link to Healio Learn the Hearta FREE online cardiology resource for those seeking to increase their knowledge of ECG tracings interpretation and cardiovascular diseases.

‘Learn the Heart’: A Review or ECG Basics

I suggest you start with the ‘Atrial Fibrillation ECG Review‘ then move on to the ‘ECG Basics‘ to analyze each part of the ECG tracing. Included are detailed explanations and ECG images of the heart in Atrial Fibrillation.

The ‘ECG Basics‘ is concise and focused on only what you need to know, yet very thorough — from waves to segments to complexes. On the LearnTheHeart.com website:

⇒ Go to the Atrial Fibrillation ECG Review->
⇒ Go to the ECG Basics training module->

Reviews and Quizzes, Too

Healio ‘Atrial Fibrillation ECG Review‘ ECG graphic

You can even challenge yourself with the Beginner ECG Quiz featuring detailed answers and links to pertinent explanation pages. Or test your overall knowledge of Atrial Fibrillation with a multiple choice Atrial Fibrillation Quiz.

Other ‘Learn the Heart’ ECG Review Courses

Other ECG courses from Healio review all common ECG findings including normal and abnormal. Each review includes example 12-lead ECGs and, where appropriate, specific criteria. Of particular interest to Atrial Fibrillation patients may be:

Atrial Flutter ECG Review
Premature Atrial Contractions (PACs) ECG Review
Left Atrial Enlargement (LAE) ECG Review
Atrioventricular Nodal Reentrant Tachycardia (AVNRT) ECG Review

Steve’s Brief Overview: The EKG Signal

If you want just a brief overview of the ECG waveform signal and how to “read” an ECG tracing, go to my report, Understanding the EKG Signal.

Learn to Read Your ECG: My Brief Overview or a Healio.com Training Course

When I developed Atrial Fibrillation, one of my first courses of study was to learn how to read my own Electrocardiogram (ECG or EKG). If this interests you, too, consider my brief overview of the ECG waveform signal and how to “read” an ECG tracing. Go to my report, Understanding the EKG Signal.

FREE ECG Training Course

For the reader wanting a more extensive understanding of the Electrocardiogram and A-Fib, we offer you a link to LearnTheHeart.com – a FREE online cardiology resource for those seeking to increase their knowledge of ECG tracings.

Start with ECG Basics: I suggest you start with the ECG Basics to analyze each part of the ECG tracing; included are detailed explanations and ECG images of the heart in A-Fib. The tutorial is concise and focused on only what you need to know, yet very thorough — from waves to segments to complexes. Go to LearnTheHeart.com ECG Basics.

VIDEO: Graphic Display of Actual Heart in Atrial Fibrillation

Click to go to video

See an ECG waveform of an actual heart in Atrial Fibrillation–how it could look to your doctor. Your ECG may look different, but it will be fast and erratic. (You’ll see the changing heartbeat rate in the lower left.)

Go to video: ECG of Heart in Atrial Fibrillation on Monitor.

 

New Video: EKG of Actual Heart in Atrial Fibrillation

We’ve added a new video to our Library of Videos & Animations. A graphic display of actual heart in Atrial Fibrillation. How it could look to your doctor on an EKG/ECG monitor; (Your EKG may look different, but will be fast and erratic). Includes display of the changing heartbeat rate in the lower left.

For comparison, we’ve included a graphic comparing the tracing of a heart in normal sinus rhythm vs. a heart in A-Fib.

Share with you family and friends when you talk about your A-Fib. (:59 sec)  Go to video->

EKG tracing

How to Interpret an ECG Signal

A-Fib is fairly easy to diagnose using EKG. The ECG signal strip is a graphic tracing of the electrical activity of the heart.

An electrocardiogram, ECG (EKG), is a test used to measure the rate and regularity of heartbeats. To learn more, see our article, Understanding the EKG Signal.

Video: EKG of Heart in Atrial Fibrillation on Monitor

Graphic display of actual heart in Atrial Fibrillation. How it could look to your doctor on an EKG/ECG monitor; (Your EKG may look different, but will be fast and erratic). Notice the changing heartbeat rate in the lower left. Compare to normal ECG below.

Share with you family and friends when you talk about your A-Fib. (:59 sec) Posted by jason king, Published on Aug 24, 2017.

Graphic: ECG of Heart in Normal Heart Rhythm and in Atrial Fibrillation

In the case of Atrial Fibrillation, the consistent P waves are replaced by fibrillatory waves, which vary in amplitude, shape, and timing (compare the two illustrations below).

How to Interpret an ECG Signal

EKG signal components at A-Fib.com

EKG signal components

An electrocardiogram, ECG (EKG), is a test used to measure the rate and regularity of heartbeats, as well as the size and position of the chambers, the presence of any damage to the heart, and the effects of drugs or devices used to regulate the heart.

The ECG signal strip is a graphic tracing of the electrical activity of the heart. To learn more, see our article, Understanding the EKG Signal.

If you find any errors on this page, email us. Y Last updated: Friday, September 8, 2017

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VIDEO: Your Heart’s Ejection Fraction (EF): What You Need to Know

Three short videos about Ejection Fraction with Dr. Robert Fishel at A-Fib.com

Three short videos about Ejection Fraction with Dr. Robert Fishel

In the following three short videos, cardiac electrophysiologist, Dr. Robert Fishel, discusses the ejection fraction (EF) a measurement of the pumping efficiency of the heart and why cardiac patients should know their EF percentage. (Videos hosted on the Sharecare.com website.)

Video 1: What is the ejection fraction? (:54 sec.)

Dr. Robert Fishel explains that cardiac ejection fraction (EF) refers to the percentage of blood pumped from the heart’s main chamber during each heartbeat, and relays its importance to A-Fib patients.

Video 2: Who should know their ejection fraction (EF)? (:34 sec.)

Measurement of your Ejection Fraction (EF) is an important test for cardiac patients to know. Dr. Robert Fishel explains why A-Fib patients need to know their EF number.

Video 3: How is an ejection fraction measured? (:56 sec.)

Ejection fraction (EF) can be measured by various techniques including an echocardiogram, ventriculogram and other methods.

Dr. Fishel is Director of Cardiac Electrophysiology, JFK Medical Center Atlantis, FL. Dr. Fishel graduated from New York University School of Medicine in 1987 and has been in practice for 30 years. He is board certified in Electrophysiology and Clinical Cardiac Electrophysiology. 

If you find any errors on this page, email us. Y Last updated: Monday, January 15, 2018

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The Threat to Patients with “Silent A-Fib” How to Reach Them?

‘Silent A-Fib’ is a serious public health problem. Anywhere from 30%-50% of those with A-Fib aren’t aware they suffer from A-Fib and that their heart health is deteriorating.

In his A-Fib story, Kevin Sullivan, age 46, wrote about his diagnosis of Silent A-Fib.

“I was healthy, played basketball three times per week, and lifted weights. I started to notice on some days playing basketball, I was having some strange sensations in my chest. And sometimes, difficultly catching my breath. But the next day I would feel fine. I assumed this was just what it felt like to get old.”

He writes, that at the time, he happened to see a cardiologist about medication for high cholesterol:

“I went to see a cardiologist. They looked at my heart with ultrasound and asked if I could feel “that.” I asked them what they were talking about, and they told me that I was having atrial fibrillation. That was the first time I had ever heard of the phrase.”

‘Silent A-Fib’ vs. ‘Symptomatic A-Fib’

Silent (asymptomatic) A-Fib can have similar long-term effects as A-Fib with symptoms. Silent A-Fib may progress and get worse just like symptomatic A-Fib. Increased fibrosis may develop, the atrium may become stretched and dilated, the frequency and duration of the unnoticed A-Fib attacks may increase over time (electrical remodeling).

Silent A-Fib may progress and get worse just like symptomatic A-Fib.

Is “Silent A-Fib” Really Silent? Some people question whether “silent” A-Fib is really silent (from a clinical aspect). Even with Silent A-Fib, one loses 15%-30% of normal blood flow to the brain and other organs which certainly has an effect. (For Kevin Sullivan, he experienced occasional pain in his chest and shortness of breath while playing basketball.)

Those with Silent A-Fib may get used to their symptoms, or they write off the tiredness, dizziness or mental slowness like Kevin Sullivan did. Nonetheless, almost everyone in Silent A-Fib is affected and changed by their A-Fib to some extent.

‘Silent A-Fib’ More Dangerous: Increased Risk of A-Fib Stroke

When left untreated, A Fib patients have a 5X higher chance of stroke, and a greater risk of heart failure. Often, an A-Fib patient is hospitalized or dies from an A-Fib-related stroke without anyone ever knowing the patient had A-Fib.

And if the patient with A-Fib survives, they have about a 50% higher risk of remaining disabled or handicapped (compared to stoke patients without A Fib).

Tactics to Find Undiagnosed ‘Silent A-Fib’

Today, during a routine physical exam, general practitioners (GPs) will listen to your heart with a stethoscope and would notice if your heart beat was irregular. After a certain age, your exam may also include an ECG (EKG), and the tracing would show if you are in Atrial Fibrillation, even if your not aware of it. Cardiologists routinely perform an ECG and catch Silent A-Fib (like Kevin Sullivan’s cardiologist did).

But, to be detected, A-Fib must be present at the time of the ECG, and we know that A-Fib is often intermittent. If intermittent A-Fib is suspected, your EP has an array of A-Fib wearable event monitoring devices (like the band-aid-size ‘Zio patch’ monitor).

What if A-Fib isn’t even on the patient’s radar? What’s the remedy? More frequent and regular screenings! But how? First, by healthcare personnel teaching ‘at-risk age groups’ how to use pulse-taking palpation (which can be readily taught). See also the VIDEO: “Know Your Pulse” Awareness Campaign.)

Second, through community-sponsored health screening events when patients who are interacting with their healthcare provider for another reason, such as an annual flu vaccination.

Think of the lives and permanent disabilities that would be saved by inexpensive screening and easily administered monitoring for Silent A-Fib. 

The Future of Screening for Silent A-Fib: Heart-monitoring apps and devices are growing in popularity. Two FDA-approved devices are the iPhone app called Cardio Rhythm, and the AliveCor Kardia device that connects to a app-equipped smartphone.

In this emerging era of ‘wearable’ technology, the wearer, themselves, may be the first to detect an irregular heart beat.

These devices display an ECG tracing, and an irregular reading may direct the user to their doctors. In this emerging era of ‘wearable’ technology, the wearers, themselves, may be the first to detect an irregular heart beat.

What Patients Need to Know

If you have A-Fib, discuss it with your family and friends. Answer their questions. Because A-Fib runs in families, urge your immediate family members to discuss A-Fib with their doctors.

Encourage your friends over 60 years old to do the same. Support community-sponsored health screening events.

References for this Article
• Furberg CD et al. “Prevalence of atrial fibrillation in elderly subjects (the Cardiovascular Health Study).” Am J Cardiol. 1994; 74: 236-241.PubMed PMID: 8037127. Last accessed April 3, 2014 URL: http://www.ncbi.nlm.nih.gov/pubmed/8037127

• You Can Monitor Heart Rhythm With A Smartphone, But Should You? NPR.org October 15, 2016. http://www.npr.org/sections/health-shots/2016/10/15/497828894/you-can-monitor-your-heart-with-a-smartphone-but-should-you

• Cooke, Georga, et al. “Is pulse palpation helpful in detecting atrial fibrillation? A systematic review: Particular high-risk patients may benefit from repeated testing.” Journal of Family Practice, Feb. 2006, p. 130+. Academic OneFile, Accessed 1 June 2017. https://www.ncbi.nlm.nih.gov/pubmed/16451780.

• Lowres, N. et al. Community Screening Programs to Identify Unknown Atrial Fibrillation: A Systematic Review. Heart, Lung and Circulation 2012, Volume 21 , Supplement 1, Page S4.  DOI: http://dx.doi.org/10.1016/j.hlc.2012.05.018

The Effect of Diet & Nutrition on Your A-Fib: My Top 5 Articles

Many patients wonder if eating or avoiding the right foods might lessen or improve their A-Fib symptoms. While we don’t know of any diet to “cure” your A-Fib, you might consider the “DASH” eating plan recommended by U.S. National Heart, Lung and Blood Institute which reduces the risk of developing cardiovascular disease.

The following articles may answer some of your A-Fib-related questions involving diet and nutrition:

1. Caffeine: “Is drinking coffee (tea, colas, other products with caffeine) going to make my A-Fib worse or trigger an A-Fib attack?”

2. Diet: Is a whole food or organic diet helpful for patients with Atrial Fibrillation? Is there any research recommending one or the other?”

3. Personal A-Fib story: “No Way Am I Having an Ablation! But Diet and Meds Disappoint—A-Fib Free After Ablation” by Saul Lisauskas

4. Nutrition: Why are doctors so opposed to nutrition as a way of helping A-Fib. I tried to talk with my doctor about magnesium and other nutritional supplements. ‘There’s no proof that they work,’ was his response.”

5. Holistic Approach:  “I want nutritional counseling and a more integrated approach to my A-Fib treatment plan. How do I find a doctor with a more “holistic” approach?”

Be a Sleuth: Keep an Episode Diary

Keep a diary of your A-Fib episodes

To determine if certain foods or beverages may be triggering the number and duration of your A-Fib attacks, start by keeping a log or diary. When an episode occurs, note the day & time, duration and what you were doing, eating or drinking.

As you collect data, scrutinize your log entries for patterns and specific triggers. This may lead you to lessen or eliminate certain foods or beverages or even activities that appear to trigger your A-Fib. You may want to share your log with your doctor.

Updated Article on Sleep Apnea Home Testing

Philips Respironics "Alice NightOne Sleep Apnea in-home test at A-Fib.com

Philips’ Alice NightOne

We’ve updated our article: Sleep Apnea: Home Testing with WatchPAT Device and the Philips Respironics.

There are several FDA-approved sleep study devices you can use in the comfort of your own bedroom to determine if you have sleep apnea. And it’s convenient (especially if being away from home overnight is problematic).

Everyone with A-Fib should be tested for sleep apnea. It’s now available at a fraction of the cost of an in-lab sleep study ($250-$300 vs. $1100-$2,000).

We’ve added the Philips Alice™ NightOne home test. Continue to the updated article…

 

Sleep Apnea: When Snoring Can Be Lethal

Obstructive Sleep Apnea (OSA) is so common that at least 43% of patients with Atrial Fibrillation also suffer with it. For that reason alone, you should be tested for sleep apnea.

Aside from causing or triggering A-Fib, untreated sleep apnea can cause many other serious health threats.

Got Sleep Apnea? Your Life-Threatening Risks

Researchers at the U. of Wisconsin examined 22-years of mortality data on the study’s participants and found the following:

infographic-sleep-apnea-stats-section-only-500-v-425-pix

The Wisconsin Sleep Cohort Study

Beginning in 1989, the U. of Wisconsin study used a random sample of 1,522 Wisconsin state employees. The participants underwent overnight sleep apnea studies and many other tests at four-year intervals. They were not selected because they had known sleep problems. (After the testing, researchers contacted participants with severe sleep apnea and explained the health risks.)

The study reveals the numerous life-altering and life-threatening health issues associated with sleep apnea.

Sleep Apnea: a condition in which one or more pauses in breathing occur while sleeping, pauses can last a few seconds to minutes and can occur 30 times or more an hour.

More EPs are Sending Patients for Sleep Studies

So many A-Fib patients also suffer from sleep apnea that many Electrophysiologists (EPs) routinely send their patients for a sleep apnea study. Some A-Fib centers have their own sleep study program. (The patient just walks down the hall to an A-Fib sleep study area.)

For some lucky patients, normal sinus rhythm (NSR) can be restored just by controlling their sleep apnea and getting a good night’s sleep.

Take Action: Sleep Apnea Can be Lethal

The Wisconsin Sleep Study findings demonstrate just how lethal sleep apnea can be. Sleep apnea isn’t a minor health problem, and it’s a condition you can do something about. (Just like A-Fib, you don’t have to just live with it).

If your significant other tells you that you pause breathing when you sleep or that you snore, do something about it! (Not everyone with sleep apnea snores, but snoring may indicate sleep apnea.)

Talk with your doctors about testing for sleep apnea. You may need an in-lab sleep study (or the newer option of a home sleep test).

Learn More About Sleep Studies

Read about in-lab and in-home sleep studies in our article, Sleep Apnea: Home Testing with WatchPAT Device and the Philips Respironics

On a Personal Note: My wife has sleep apnea (but not A-Fib). While sleeping, she would actually stop breathing for what seemed like a long time, then suddenly gasp for air. It was very scary! But now she uses a CPAP machine, sleeps soundly and wakes up rested.

Sleep apnea may run in families. Her brother has sleep apnea also.

Resources for this article
Dudley, David. World War ZZZ. AARP the Magazine, August/September 2016, p.51.

Young, Terry. New Wisconsin Study Documents Severity of Sleep Apnea Risk. UW Health 2008 Annual Report. http://www.uwhealth.org/about-uwhealth/annual-report/new-wisconsin-study-documents-severity-of-sleep-apnea-risk/15018

Nieto, Javier. Sleep Apnea Associated with Higher Mortality from Cancer. University of Wisconsin School of Medicine and Public Health. News and Events, Med.Wisc.edu, 05/21/2012. http://www.med.wisc.edu/news-events/sleep-apnea-associated-with-higher-mortality-from-cancer/37687

Infographic: A-Fib & Sleep Apnea—The Life-Threatening Risks


Sleep Apnea is common amount Atrial Fibrillation

At least 43% of patients with Atrial Fibrillation suffer from Obstructive Sleep Apnea (OSA) as well.

Sleep Apnea is a common disorder in which you have one or more pauses in breathing or shallow breaths while you sleep. Breathing pauses can last from a few seconds to minutes. They may occur 30 times or more an hour. Typically, normal breathing then starts again, sometimes with a loud snort or choking sound.

It is now established that there’s a correlation between Sleep Apnea and A-Fib.

 

AliveCor Kardia May be Big Winner in Britain’s NHS Plan

AliveCor, maker of the Kardia ECG smartphone attachment to detect Atrial Fibrillation, may be a big winner in a plan by the British National Health Service (NHS).

AliveCor sensor with screen and smartphone 400 x 270 pix at 300 res

AliveCor Kardia attached to a smartphone

Dr. David Albert, AliveCor founder, said the British plan opens the door to the NHS buying AliveCor devices for all 2 million atrial fibrillation patients in England.

The NHS has announced plans to give millions of patients free health apps & connected health devices in a bid to promote self-management of chronic diseases.

The plan is expected to “save money and lives by preventing strokes.” About 20 percent of British A-Fib patients have strokes. The program will start in April 2017.

The AliveCor Kardia, cleared for use in the US by the FDA, attaches to Android and Apple Devices and by pressing the sensors with your fingers (or thumbs), capture single-lead, medical-grade EKGs in just 30-seconds. Instantly you know if your heart rhythm is normal or if atrial fibrillation (A-Fib) is detected in your EKG. Data can be captured and sent to your doctor. 

Request to Our Readers

Is anyone using the latest AliveCor® version, ‘Kardia™ Mobile’? (Model 1141, out since Feb. 2016) I want to update our Feb. 2015 review.

How do you typically use it? Are you satisfied with the performance? Do you transfer the data to your doctor?

Will you share your product experiences with me? Just shoot me an Email with your impressions.

Resource for this article

Versel, N. Britain’s NHS to fast-track AliveCor smartphone ECG for AFib patients. MedCityNews.com. Jun 20, 2016. http://medcitynews.com/2016/06/nhs-alivecor/

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