Heart attacks are more serious in the morning: study
Thursday 28 April 2011
Heart attacks that occur in the morning are likely to be more serious than attacks at other times of the day, a specialist journal reported on Wednesday.
Spanish researchers looked at data from 811 patients who had been admitted to a Madrid clinic with a myocardial infarction between 2003 and 2009.
They used levels of an enzyme in the blood to measure the extent of dead tissue, known as an infarct, which is caused by blocked blood supply to heart muscle.
Those who had had a heart attack between 6:00 am and noon, during the transition from darkness to light, had a 21-percent larger infarct compared with patients whose attack occurred between 6:00 pm and midnight.
The study, published in the British journal Heart, builds on previous evidence that circadian rhythm - the famous "body clock" - influences the heart in many ways such as blood pressure, heart rate, cardiac output and the function of cells that line cardiac blood vessels.
Of the 811 patients, 269 had their heart attacks in the period from 6:00 am to noon. More than three-quarters of the patients admitted to the clinic were men. Their average age was 62.
The findings should be useful in assessing the effectiveness of drugs against heart disease, the researchers said.
Life & Style blogs
- 1 What marriage would look like if we actually followed the Bible
- 3 The Chinese city where men have 'three girlfriends because there are so many women'
- 4 'Heartbreaking' Syria orphan photo wasn't taken in Syria and not of orphan
- 5 Orthorexia nervosa: How becoming obsessed with healthy eating can lead to malnutrition
£37040 - £43600 per annum: Recruitment Genius: The UK's export credit agency a...
£25000 - £27500 per annum: Recruitment Genius: This company provides a compreh...
£16800 - £19500 per annum: Recruitment Genius: Would you like to join an organ...
£25000 - £28000 per annum: Recruitment Genius: In the last five years this com...