Abstract

Ankur Jain, Rohit Bajaj, Mohit Manav, Dr. N.S.Neki2*

ABSTRACT

There are variations in the onset of cardiovascular events. As diurnal variation, most studies have shown an increased incidence of acute cardiovascular events such as acute myocardial infarction, sudden cardiac death and stroke in the morning.[1] In addition, weekly and seasonal variation in the cardiovascular events have also been reported.[2] These variations may be closely associated with ambulatory blood pressure (BP) variations. Modesti et al report an interesting study demonstrating weather-related change in ambulatory BP profile.[3] In their study, in addition to poorly controlled night time BP in hot days, cold weather was significantly associated with increased morning BP surge in elderly subjects, even when they were treated with a higher number of antihypertensive drugs per day in cold weather. This cold weather-augmented morning BP surge may partly accont for an increased number of cardiovascular events in the cold morning during the winter season.