March 14th, 2011 by AnnMacDonald in Health Tips, True Stories
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While I was browsing the produce section of my grocery store the other day, the sound of a panicked voice coming over the store’s loudspeaker made me jump. “Does anyone in the store know CPR? Anyone? CPR? We need you in baked goods!”
I froze. In theory, I know how to perform CPR — cardiopulmonary resuscitation. I took a two-hour course on it nearly 25 years ago. But I hadn’t given it much thought since then and I certainly hadn’t practiced what I learned.
My mind started whirling as I tried to remember the sequence of steps. They’d changed the rules a few years back — I knew that much — so I wouldn’t have to do mouth-to-mouth resuscitation. But where exactly on the chest was I supposed to push? Should I form a fist and push down with my knuckles, or use the ball of my hand?
Suddenly, sirens wailed outside the store. The rescue squad had arrived. Too late, as I learned afterward, for this man, who was a victim of a sudden cardiac arrest. This type of heart attack strikes so fast that there usually aren’t any warning signs. You might see someone grasp his or her chest, collapse, twitch and gasp a few times, and then lie deathly still.
At that point, every minute counts. Enough oxygen remains in the person’s bloodstream to nourish the brain for several minutes — but a bystander has to circulate oxygenated blood to the brain and other organs by pushing down on the chest hard and fast, mimicking the heartbeat.
I’m a health writer. I knew this intellectually. But until those agonizing moments in the grocery store, I never really understood on a gut level just how important every minute is. Read more »
*This blog post was originally published at Harvard Health Blog*
March 10th, 2011 by Shantanu Nundy, M.D. in Health Tips, Research
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What is the leading cause of death in the United States? Heart disease? Cancer? No, it’s smoking. Smoking? Yes, depending on how you ask the question.
In the early 90s, McGinnis and Foege turned the age-old question of what people die of on its head by asking not what diseases people die of but rather what the causes of these are. Instead of chalking up the death of an older man to say lung cancer, they sought to understand the proximate cause of death, which in the case of lung cancer is largely smoking. Using published data, the researchers performed a simple but profound calculation — they multiplied the mortality rates of leading diseases by the cause-attributable fraction, that proportion of a disease that can be attributed to a particular cause (for example, in lung cancer 90 percent of deaths in men and 80 percent of deaths in women are attributable to smoking). Published in JAMA in 1993, their landmark study became a call to action for the public health community.
When looked at the conventional way, using data from the 2004 update of the original study, heart disease, cancer, and stroke are the leading causes of death, respectively. This accounting may help us understand the nation’s burden of illness, but does little to tell us how to prevent these diseases and improve health. Through the lens of McGinnis and Foege we get the actual causes of death (e.g., the major external modifiable factors that contribute to death). This analysis shows that the number one cause of death in America is tobacco use, followed closely by poor diet and lack of physical activity, and then alcohol consumption. Read more »
*This blog post was originally published at BeyondApples.Org*
March 10th, 2011 by RyanDuBosar in Better Health Network, Health Tips
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For those of you planning air travel to your next medical conference (and ACP Internist isn’t too shameless to plug Internal Medicine 2011 — we hope to see you there), TIME reports that there are five health risks that are rare yet have recently happened. Tips on avoiding these maladies include:
— E. Coli and MRSA on the tray table. Microbiologists found these two everywhere when they swabbed down flights. Bring your own disinfecting wipes.
— Bedbugs in the seat. British Airways fumigated two planes after a passenger posted pictures online about her experience. Wrap clothes in plastic and wash them.
— Sick seatmates. Everyone has experienced (or been) this person. Wash your hands.
— Deep vein thrombosis (DVT). Tennis star Serena Williams experienced a pulmonary embolism, possibly related to recent foot surgery. But DVT can happen to anyone restrained to a cramped position for long periods of time. Move around in-flight (but not during the beverage service, of course.)
— Dehydration. Dry cabin air may make it more difficult to fight off infections. Drink more water.
*This blog post was originally published at ACP Internist*
March 9th, 2011 by LouiseHBatzPatientSafetyFoundation in Health Policy, True Stories
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This is a guest post by Dr. Julia Hallisy.
Serious infections are becoming more prevalent and more virulent both in our hospitals and in our communities. The numbers are staggering: 1.7 million people will suffer from a hospital-acquired infections each year and almost 100,000 will die as a result.
When our late daughter, Kate, was diagnosed with an aggressive eye cancer in 1989 at five months of age, our life became consumed by doctor visits, MRI scans, radiation treatments, chemotherapy — and fear. My husband and I assumed that our fight was against the ravages of cancer, but almost eight years later we faced another life-threatening challenge we never counted on — a hospital-acquired infection. In 1997, Kate was infected with methicillin-resistant staphylococcus aureus (MRSA) in the operating room during a “routine” 30-minute biopsy procedure to confirm the reoccurrence of her cancer.
Kate’s hospital-acquired infection led to seven weeks in the pediatric intensive care unit on life support, the amputation of her right leg, kidney damage, and the loss of 70 percent of her lung capacity. While most infections are not this serious, the ones that are often lead to permanent loss of function and lifelong disabilities. In the years since Kate’s infection, resistant strains of the bacteria have emerged and now pose even more of a threat since they can be impossible to treat with our existing arsenal of antibiotics.
Patients afflicted with MRSA will often have to contend with the threat of recurrent infections for the rest of their lives. These patients live in constant fear of re-infection and often struggle with feelings of vulnerability and helplessness. Family members, friends, and co-workers may not fully understand the facts and have nowhere to turn for education about risks and prevention. Loved ones may worry unnecessarily for their own safety, which can cause them to distance themselves from someone who desperately needs their presence and support.
We have the knowledge and the ability to prevent a great number of these frightening infections, but the busy and fragmented system in which healthcare is delivered doesn’t encourage adequate infection control measures, and patients continue to be at risk. A significant part of the problem is that the public doesn’t receive timely and accurate information about the detection and prevention of MRSA and other dangerous organisms, and they aren’t engaged as “safety partners” in the quest to eliminate infections. Read more »
March 5th, 2011 by John Mandrola, M.D. in Opinion, Research
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It’s hard to believe that turbulence could be a good thing for the heart. Consider how the word turbulent is defined: “Characterized by conflict, disorder, or confusion; not controlled or calm.” Those traits don’t sound very heart-healthy. But when it comes to heart rhythm, it turns out that a turbulent response — to a premature beat — is better than a blunted one. The more turbulent the better.
No, you haven’t missed anything, and turbulence isn’t another of my typos. Until [recently], heart rate turbulence was an obscure phenomenon buried in the bowels of heart rhythm journals.
What Is Heart Rate Turbulence (HRT)?
When you listen to the heart of a young physically-fit patient, you are struck not just by the slowness of the heartbeat, but also by the variability of the rhythm. It isn’t perfectly regular, nor is it chaotic like atrial fibrillation (AF). Doctors describe this — in typical medical speak — as regularly irregular: The heart rate increases as the patient inhales and slows as he or she exhales. This variability occurs as a result of the heart’s responsiveness to its environment. The more robustly and quickly the heart responds, the healthier it is.
HRT seeks to measure how quickly and vigorously the heart rate reacts in response to a single premature beat from the ventricle — a premature ventricular contraction (PVC). Normally after a PVC, the heart rate speeds for a few beats, and then slows back to baseline over the next 10 beats. The healthy heart responds with a more intense rise in heart rate and a quicker return to baseline. Using simple measurements of heart rate from a standard 24-hour electrocardiogram (ECG) monitor, a propriety software program averages many of these responses and comes up with a measurement of turbulence onset and turbulence slope. Read more »
*This blog post was originally published at Dr John M*
