INTRODUCTION: Circadian variation in @entity65 is well recognised in vascular events. This study aims to observe any significant difference in circadian variability in geriatric @entity1 when compared to their younger counterparts. METHODS: This prospective study was conducted at medical emergency at the Government Medical College and Hospital, Chandigarh, India. All the @entity1 attending medical emergency with symptoms suggestive of @entity453 were included. The time of occurrence of first symptom and subsequent symptoms was noted. Electrocardiography, cardiac enzymes and echocardiography were performed to establish the diagnosis of @entity1187 . The 24-hour day was divided into 12 equal parts of two hours each. For the final analysis, the two-hour periods were grouped into six equal periods of four hours each and four quarters of six hours each. RESULTS: We studied 559 @entity1 , out of whom 459 were 65 years old or younger, and 100 @entity1 were older than 65 years old. 459 @entity1 had 498 episodes in all. 100 @entity1 above the age of 65 years had 104 episodes. Both the groups had peaking of acute @entity583 in the early morning hours with @entity1 older than 65 years of age having a slightly early peak. However, there was considerable variability for peaking of unstable @entity951 and non-Q @entity583 . In @entity1 older than 65 years, early morning peaking of events was noted whereas in 65 years or younger, the peaking of events was noted in the evening hours. CONCLUSION: Circadian variability exists in occurrence of acute coronary events and is variable in geriatric @entity1 when compared to their younger counterparts.

Ageing and circadian variation in XXXX .

@entity1 :: ('9606', 'Species') :: ['patients'] @entity1187 :: ('MESH:D054058', 'Disease') :: ['acute coronary syndrome'] @entity583 :: ('MESH:D009203', 'Disease') :: ['myocardial infarction'] @entity951 :: ('MESH:D000787', 'Disease') :: ['angina'] @entity453 :: ('MESH:D003324', 'Disease') :: ['coronary artery disease'] @entity65 :: ('MESH:D002318', 'Disease') :: ['cardiovascular events']
@entity65 :: (MESH:D002318,Disease) :: ['cardiovascular events']
