Post-burn pulse rate

Introduction Pulse rate increase after burn is one of the symptoms of burn shock. The majority of burn shock is secondary shock, usually occurring in the first few hours or more than 10 hours after burn. It belongs to hypovolemic shock because of the large amount of plasma in the wound from the capillaries to the wound and tissue. The gap causes a reduction in effective circulating blood volume.

Cause

This is due to the increased secretion of catecholamines after burns, which increases the heart rate. In severe cases, it can be increased to 130 beats/min or more, and the pulse is weak.

an examination

Related inspection

Dynamic electrocardiogram (Holter monitoring) white blood cell count (WBC)

The secretion of vasoactive substances in burns is increased, which increases myocardial contractility and heart rate, and compensates for cardiac output. The heart rate increased in the early stage of burns. Severe burns can be increased to more than 130 beats / min. If the heart rate is too fast, each time the heart discharge is reduced, the peripheral vascular resistance is increased, and the pulse is expressed as a weak number. When the shock is severe, the pulse is more delicate. Check the pulse for a diagnosis.

Differential diagnosis

Reduced urine volume after burns (generally refers to adult urine volume below 20 ml per hour): It is an important and early manifestation of burn shock. If kidney function is not seriously damaged, urinary oliguria can generally reflect tissue blood perfusion and severe shock. degree. The main cause of oliguria is insufficient blood volume and reduced renal blood flow. Of course, it is still associated with increased levels of anti-urinary hormones and aldosterone. If there is no urine, the systolic blood pressure is below 10.7 kPa.

Thirst after burns: It is due to a large amount of fluid exudation of Jiangyang after severe burns, which reduces blood volume, resulting in insufficient circulating blood volume. The larger the burn area, the more severe the exudation and the more obvious the thirst, which is the clinical manifestation of the early occurrence of burn shock.

The secretion of vasoactive substances in burns is increased, which increases myocardial contractility and heart rate, and compensates for cardiac output. The heart rate increased in the early stage of burns. Severe burns can be increased to more than 130 beats / min. If the heart rate is too fast, each time the heart discharge is reduced, the peripheral vascular resistance is increased, and the pulse is expressed as a weak number. When the shock is severe, the pulse is more delicate. Check the pulse for a diagnosis.

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