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Women At Higher Risk Of Having A Stroke With Afib

You don’t want this…

When it comes to the risk of stroke in atrial fibrillation, it pays to be a boy. Sorry, ladies.

An important question came up on my recent post on AF and stroke.

Why does being female give you an automatic point on CHADS2-VASc?  I keep seeing it, but I don’t see why that is.

It doesn’t seem intuitive that female AF patients should have more strokes. Why? AF should equal AF.

But it does matter. When it comes to AF and stroke, women are very different.

Here are three references that support the fact that female gender increases the risk of stroke in AF.

–First: Read more »

*This blog post was originally published at Dr John M*

Is The FDA Too Lenient When Reviewing Medical Devices?

I speak to people in the pharmaceutical industry much more than folks who develop medical devices. I know how pharma researchers spend years and hundreds of millions of dollars trying to develop a useful, safe new drug that the FDA will approve for marketing. Certainly there are big payoffs, but the road is filled with potholes and trapdoors and the analysis by the FDA is rigorous.

But for years we’ve been hearing that it is much less rigorous when it comes to medical devices. Artificial hip joints and stents to open blocked arteries fall into this category. And recently, the less stringent review process has been highlighted in the news. Metal-on-metal hip joints are being removed from patients who had them implanted. They thought Read more »

*This blog post was originally published at Andrew's Blog*

New Blood-Thinner Shifts Responsibility To Patients

I recently came across a very important blog post on the use of the novel new blood-thinner, dabigatran (Pradaxa).

Fellow Kentucky cardiologist, and frequent TheHeart.org contributor, Dr. Melissa Walton-Shirley wrote this very detailed case presentation involving a cantankerous non-compliant rural patient with AF (atrial fibrillation) that sustained a stroke while “taking” dabigatran.

Dr. Walton-Shirley details the very commonly done procedure of cardioversion (shock) for AF. As she clearly points out, the most important safety feature of shocking AF back to regular rhythm entails adequate blood thinning before and after the procedure. Thin blood prevents the possibility of clots dislodging after restoring normal contraction to the top chambers of the heart (atria).

Herein lies the rub with dabigatran, and the two soon-to-be-approved non-warfarin blood-thinning agents, apixaban and rivaroxaban. In the past, Read more »

*This blog post was originally published at Dr John M*

More Potassium, Fewer Strokes

There are few medical conditions that people fear more than a stroke. We know that blood pressure control and lowering cholesterol levels reduces stroke risk. Now, thanks to a huge analysis from Italy published in the Journal of the American College of Cardiology, we know that higher dietary consumption of potassium is associated with lower rates of stroke and could also reduce the risk of coronary heart disease and total cardiovascular disease, too. What is even more remarkable is that the results apply to all parts of society and not just to specific “at-risk” subgroups.

Most doctors aren’t even aware of how important it is to eat potassium-rich foods. And what are these foods that have potassium? Surprise: It’s fruits and vegetables like bananas, tomatoes, oranges, apricots, most legumes, spinach, winter squash, avocado, kiwi, and cantaloupe. Actually, almost all fruits and veggies have moderate to high potassium content.

The researchers looked a number of well-done studies that included 247, 510 participants over age 30 and found that those patients with the higher potassium intake reduced their stroke risk by 21 percent. The Italian doctors say the protective effect of potassium against stroke is in part due to its blood pressure lowering effects and also due to other properties of the potassium mineral, such as the inhibition of free radical formation.

I’ve written before about the DASH diet, which also found that reduction of sodium and addition of fruits and vegetables to the diet is an effective way to control blood pressure. The DASH diet is high in potassium.

Think about it: Did you have five servings of fruits and vegetables today? Numerous studies have shown their life-prolonging benefits. This new study just adds to what we already know. I challenge all readers to keep a diet count and make sure you are eating five fruit and vegetable servings a day — every day — to help reduce your risk of stroke, cancer, and heart attack.

*This blog post was originally published at EverythingHealth*

The Business Of Anticoagulation

This is a guest post by Dr. Juliet Mavromatis:

**********

The emergence of a new generation of anticoagulants, including the direct thrombin inhibitor, dabigatran and the factor Xa inhibitor, rivaroxaban, has the potential to significantly change the business of thinning blood in the United States. For years warfarin has been the main therapeutic option for patients with health conditions such as atrial fibrillation, venous thrombosis, artificial heart valves and pulmonary embolus, which are associated with excess clotting risk that may cause adverse outcomes, including stroke and death. However, warfarin therapy is fraught with risk and liability. The drug interacts with food and many drugs and requires careful monitoring of the prothrombin time (PT) and international normalized ratio (INR).

Recently, when I applied for credentialing as solo practioner, I was asked by my medical malpractice insurer to detail my protocol for monitoring patients on anticoagulation therapy with warfarin. When I worked in group practice at the Emory Clinic in Atlanta I referred my patients to Emory’s Anticoagulation Management Service (AMS), which I found to be a wonderful resource. In fact, “disease management” clinics for anticoagulation are common amongst group practices because of the significant liability issues. Protocol based therapy and dedicated management teams improve outcomes for patients on anticoagulation with warfarin. Read more »

*This blog post was originally published at ACP Hospitalist*

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