Study Links ‘Body Clock’ to Sudden Cardiac Death — ‘Biological clock’ may be behind sudden heart attacks – A new study uncovers the first molecular evidence linking the body’s natural circadian rhythms to sudden cardiac death (SCD). Ventricular arrhythmias, or abnormal heart rhythms, are the most common cause of sudden cardiac death: the primary cause of death from heart disease. They occur most frequently in the morning waking hours, followed by a smaller peak in the evening hours.
Short-Term Exposure to Most Major Air Pollutants Associated With Increased Risk of Heart Attack – Short-term exposure (for up to 7 days) to all major air pollutants, with the exception of ozone, is significantly associated with an increased risk of heart attack. The potentially harmful effect of episodes of high air pollution on health has been suspected for more than 50 years.
Dabigatran associated with increased risk of acute coronary events – The anticoagulant dabigatran is associated with an increased risk of myocardial infarction (heart attack) or acute coronary syndrome in a broad spectrum of patients when tested against some other medicines.
A new stent design may put patients at risk – Stent shortening – a newly observed deformity in cases using a particular family of stents, can cause serious complications for patients, says researchers. In this case the stent clotted off and the patient had a heart attack.
Professional dental cleanings may reduce risk of heart attack and stroke – Tooth scaling at least once a year reduced heart attack and stroke risks. Professional tooth scaling was associated with fewer heart attacks and strokes in a study from Taiwan presented at the American Heart Association’s Scientific Sessions 2011.
Heart attack patients winning the race to angioplasty treatment – The period from hospital arrival to angioplasty is called “door-to-balloon” time (D2B). A new study showed that 91 percent of patients were treated in a D2B time of less than 90 minutes in 2010, compared with 44 percent in 2005.
Surgical removal of the tonsils and appendix associated with risk of early heart attack — But because of the young age of participants, the absolute risk differences were small – The surgical removal of the appendix and tonsils before the age of 20 was associated with an increased risk of premature heart attack in a large population study performed in Sweden. Tonsillectomy increased the risk by 44% (hazard ratio 1.44) and appendectomy by 33% (HR 1.33).
Heart attacks are more serious if they occur at certain times of the day — Circadian variations of infarct size in acute myocardial infarction – People who have a heart attack are likely to be more seriously affected if the attack happens in the morning, reveals research published ahead of print in Heart journal.
Increase in Use of Evidence-Based Treatments is Followed By Decrease in Risk of Death Among Patients With Heart Attack – In an analysis of data from a coronary care registry in Sweden, between 1996-2007 there was an increase in the prevalence of use of evidence-based invasive procedures and pharmacological therapies for treatment of a certain type of heart attack, and a decrease in the rate of death at 30 days and one year after a heart attack for these patients.
Margarines with low-dose omega-3 fatty acids don’t protect heart patients – A diet enriched with omega-3 fatty acids don’t appear to give additional protection against further cardiac trouble in patients, revealed by Dutch researchers.