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Pathophysiology of haemorrhagic shock
Anaesthesia and Intensive Care
|August 1, 1984
Summary
Sudden blood loss triggers homeostatic responses and releases damaging substances. Current management focuses on early bleeding control and supportive care, as no specific treatments improve outcomes in hemorrhagic shock.
Area of Science:
- Physiology
- Pathophysiology
- Biochemistry
Background:
- Sudden blood loss activates numerous homeostatic mechanisms.
- This is followed by the release of substances causing local and systemic damage.
Purpose of the Study:
- To review the immediate and delayed effects of hemorrhagic shock.
- To discuss the pathophysiology of hemorrhagic shock on various organ systems and metabolism.
Main Methods:
- Literature review of physiological and biochemical responses to hemorrhagic shock.
- Analysis of early and late effects on cardiovascular, respiratory, and other organ systems.
Main Results:
- Activation of sympathetic activity and release of hormones like renin, angiotensin, and aldosterone.
- Subsequent release of damaging substances including lysosomal enzymes, free oxygen radicals, and endotoxins.
- Significant impact on cardiovascular, respiratory, renal, hepatic, and metabolic functions.
Conclusions:
- Despite extensive research, no specific interventions have proven effective in reducing morbidity or mortality in human hemorrhagic shock.
- Management remains centered on prompt hemorrhage control, supportive care, and maintaining oxygen delivery.