Navigation Links
Heart attacks are more serious if they occur at certain times of the day
Date:4/27/2011

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.

Heart attacks that occur between 6am and noon are more likely to leave a 20% larger area of dead tissue (infarct) caused by the attack, which is more serious for the person affected, than at any other time of the day.

It is well established that a person's 24 hour body clock influences several cardiovascular physiological processes including the incidence of heart attacks, which tend to happen more around the time when a person is waking up from sleep, but what is less known is the extent of damage that this leads to.

Researchers in Madrid, Spain set out to determine the impact of time of day of a heart attack on the size of the dead tissue (infarct) caused in patients with an ST segment elevation myocardial infarction (STEMI) a type of heart attack caused by a prolonged period of blocked blood supply.

They analysed data on 811 patients with a STEMI heart attack admitted to the coronary care unit of Hospital Clinico San Carlos in Madrid between 2003 and 2009. They calculated the size of infarct by looking at enzyme release in patients.

The time of STEMI onset was divided into four 6-hour time periods in phase with 24-hour body clock rhythms.

Patients with the largest infarct size were found to be those who had a heart attack in the dark to light transition period of 6am to noon. These patients were found to have around a 21% higher level of enzymes in this period (which indicated a larger infarct size) than patients who had their heart attack between 6pm and midnight.

The greatest number of patients (269) had their heart attack in the 6am to noon period, followed by 240 patients who had their attack between noon and 6pm, 161 during the 6pm to midnight period, and 141 between midnight and 6am.

They also found that patients with a STEMI that happened in the anterior wall of the heart were left with a larger size of infarct than patients whose heart attacks happened in other locations.

The authors conclude: "If confirmed, these results may have a significant impact on the interpretation of clinical trials of cardioprotective strategies in STEMI."


'/>"/>

Contact: Emma Dickinson
edickinson@bmjgroup.com
44-020-738-36529
BMJ-British Medical Journal
Source:Eurekalert

Related medicine news :

1. ICU Patients at Risk for Rare Heart Rhythm Problem
2. Cook With Love This Valentines Day With Heart-Smart Recipes
3. Study finds racial gaps continue in heart disease awareness
4. Highmark Foundation Awards $120,000 to the American Heart Association
5. Womens Heart Disease Awareness Still Lacking
6. American Heart Association Rapid Access Journal Report: Study Finds Racial Gaps Continue in Heart Disease Awareness, Low Knowledge of Heart Attack Warning Signs Among Women
7. Migraine Linked to Increased Heart Attack Risk
8. PERSONALABS Offers Discounted Healthy Heart Online Blood Tests in February
9. Compound shows promise against intractable heart failure
10. New American Heart Association Survey Finds Heart Disease and Stroke Patients Face Significant Barriers in Obtaining Quality, Affordable Care
11. Ex-President Clinton Undergoes Heart Procedure
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:2/17/2017)... ... February 17, 2017 , ... ... services, announced today that Karen Pilley has been promoted to Chief Executive Officer. ... today’s shifting healthcare paradigm – a shift that demands the transition from pay-for-service ...
(Date:2/17/2017)... ... February 17, 2017 , ... Cancer diagnostics ... Medicine Tri-Conference February 20 – 22 in San Francisco. As part of the ... and molecular pathology workflow solution, as well as its new precision medicine platform, ...
(Date:2/17/2017)... Williamsburg, VA (PRWEB) , ... February 17, 2017 ... ... asset protection services and financial planning assistance to families and business owners in ... Center for a charity drive to help prevent all forms of domestic violence. ...
(Date:2/16/2017)... ... February 17, 2017 , ... For ... long after their final treatments. Physician researchers at The Marcus Institute of ... mind-body therapy, for efficacy in reducing symptoms of traumatic stress in cancer patients ...
(Date:2/16/2017)... , ... February 16, 2017 , ... ... professionalism, teamwork and superiority in patient care, NWH has achieved Magnet® recognition ... Magnet on Tuesday, January 31, 2017. The American Nurses Credentialing Center’s Magnet Recognition ...
Breaking Medicine News(10 mins):
(Date:2/16/2017)... DUBLIN , Feb. 16, 2017 ... "Global Markets for Emerging Medical Device Technologies" report to ... ... heart valves, open procedures, general instruments, non-drug coated implantables, large ... have been in use over the last two to three ...
(Date:2/16/2017)... The Lockwood Group (Lockwood), a medical communications agency, ... in Connecticut list by the ... a row that Lockwood has been in the top 10, ... spot in 2017. The award recognizes companies that have been ... determined through a survey conducted by The Best Companies Group ...
(Date:2/16/2017)... , Feb. 16, 2017  Prescription pain medications provided ... visit are necessary for long-term opioid use to take ... 16 th edition of The New England ... physicians see more patients in acute pain than in ... , MD, FACEP, president of the American College of ...
Breaking Medicine Technology: