Haemorrhage is the escape of blood from the vascular system due to damaged blood vessels. It can occur internally within body cavities and tissues, or externally through breaks in the skin or natural body orifices. In clinical practice, recognizing the source and volume of blood loss dictates the urgency of nursing interventions. Uncontrolled bleeding quickly depletes circulating blood volume, leading to tissue hypoperfusion and cellular hypoxia.
Bleeding is categorized based on the specific blood vessel injured and where the blood collects in the body.
When blood loss exceeds fifteen to twenty percent of total blood volume, the body enters hypovolemic shock. Compensatory mechanisms such as sympathetic nervous system activation, vasoconstriction, and tachycardia attempt to maintain vital organ perfusion. If bleeding continues unchecked, these compensations fail. Cellular metabolism shifts from aerobic to anaerobic, producing lactic acid and leading to multi-organ dysfunction syndrome.
Clinical signs vary depending on the speed and volume of haemorrhage. Early indicators include restlessness, mild tachycardia, and pale, cool skin as blood is shunted away from the skin and towards core organs. As blood loss worsens, hypotension sets in, urine output drops, and the patient may experience confusion, dizziness, or loss of consciousness. Nurses must track these trends closely because vital signs can remain deceptively normal during early compensation.
Continuous assessment of a bleeding patient focuses on vital sign trends, neurological status, and accurate fluid balance tracking. Nurses should inspect surgical sites or trauma wounds frequently for active oozing or hematoma formation. Monitoring hourly urine output via an indwelling catheter provides a reliable indicator of renal perfusion and overall circulatory status.
Immediate action stops or slows life-threatening bleeding. Direct pressure applied firmly over the wound using a clean dressing remains the gold standard for external haemorrhage. If direct pressure fails on a limb, applying a tourniquet proximal to the wound is lifesaving. Elevating bleeding limbs and keeping the patient warm prevents further deterioration while awaiting advanced medical care.
Restoring circulating volume and stopping the source of bleeding are the twin pillars of medical intervention. Intravenous access with large-bore cannulas allows rapid infusion of crystalloids and blood products. Surgical exploration, ligation of bleeding vessels, or damage control laparotomies may be necessary for internal bleeding. Pharmacological agents like tranexamic acid are often administered to promote clot stabilization.
Recovering from severe blood loss carries risks such as acute kidney injury, multi-organ failure, and transfusion-related reactions. Post-haemorrhage care requires diligent monitoring of hemoglobin levels, electrolyte balance, and coagulation profiles. Nurses support recovery through nutritional optimization, gradual mobilization, and watching closely for signs of secondary infection at wound or surgical sites.