Even after recovery, heart attacks can leave a lasting mark on your ticker — scar tissue weakens the muscle and prevents it from functioning as well as it did before seizing up. A pioneering stem-cell procedure, however, could cut the damage in half.
According to the results of a small safety trial by the Cedars-Sinai Heart Institute and published in the Lancet medical journal, introducing stem cells derived from the patient’s own heart have shown an “unprecedented” ability to reduce scarring as well as regenerate healthy cardiac tissue.
During a heart attack, the organ is deprived of oxygen and its tissue begins to die off. As the heart heals from the attack, any damaged muscle is replaced by scar tissue, which prevents the heart from beating properly and pumping the requisite blood flow the body needs.
People who regularly work long hours may be significantly increasing their risk of developing heart disease, the world’s biggest killer.
Researchers said a long-term study showed that working more than 11 hours a day increased the risk of heart disease by 67 percent, compared with working a standard 7 to 8 hours a day.
I guess that means I am at a higher risk of heart disease — it’s not uncommon for medical students and doctors to regularly work 12 to 18 hours a day!
Read more at: Huff Post
a south american woman comes in complaining of dizziness on exertion, with a positive history of recent syncope. on examination you detect a late diastolic rumbling murmur which follows an opening snap.
infection by which organism could have caused this condition?
- borrelia burgdorferi
- staphylococcus aureus
- steptococcus pyogenes
- treponema pallidum
- trypanosoma cruzi