THE EFFECT OF PROLONGED PATROLLING IN HOT CLIMATES ON HEART RATE AND BLOOD PRESSURE DYNAMICS

Abstract

This analytical study examines the changes in heart rate (HR) and arterial blood pressure (BP) that occur during prolonged patrolling activities performed under hot climate conditions. Scientific evidence indicates that factors such as heat stress, dehydration, electrolyte loss, and alterations in peripheral blood circulation significantly increase the workload on the cardiovascular system. Analysis shows that officers patrolling for 2–4 hours in high-temperature environments experience an average increase in HR by 15–25 beats/min, an elevation in systolic BP by 8–15 mmHg, and a decrease in diastolic BP by 5–10 mmHg. These changes are associated with compensatory mechanisms, reduced plasma volume, and peripheral vasodilation. The findings reveal that prolonged heat exposure may lead to cardiovascular fatigue, BP instability, and excessive cardiac load.