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Table 4 Factors determining the seasonal risk of myocardial infarction

From: Seasonal dynamics of myocardial infarctions in regions with different types of a climate: a meta-analysis

Winter

Summer

Seasonal changes in biochemical and physiological parameters:

Increase in blood pressure

Increase in lipid profile parameters

Increase in hematocrit

Increase in thrombosis

Seasonal changes in biochemical and physiological parameters:

Decrease in hematocrit

Decrease in blood oxygen saturation

Meteorological factors:

Low air temperature

Small amplitude of annual fluctuations in air temperature

High relative humidity

Small amplitude of annual fluctuations in atmospheric pressure

Small amplitude of annual fluctuations in PO2

Meteorological factors:

High air temperature

Large amplitude of annual fluctuations in air temperature

High relative humidity

Significant drop in atmospheric pressure

Large amplitude of annual fluctuations in atmospheric pressure

Significant drop in PO2

Large amplitude of annual fluctuations in PO2

Other factors:

Male gender

Old age

Other factors:

Male gender

Old age