Causes of Blood Circulation Failure: A Comprehensive Overview

How Blood Flow Can Stop

1. Heart Failure – pump too weak to meet demand.
2. Cardiac Arrest – heart stops beating (arrhythmia, heart attack, trauma).
3. Thrombosis/Embolism – clots block arteries (stroke, MI, pulmonary embolism) or veins.
4. Vasospasm – sudden vessel constriction (coronary: angina/MI; cerebral: TIA/stroke). Triggers: smoking, cocaine, medical conditions.
5. External Compression – trauma, tight casts, tumors.
6. Severe Blood Loss – hypovolemic shock from trauma or internal bleeding.
7. Aortic Dissection – tear in aorta causes rapid blood loss and collapse.
8. Sepsis/Septic Shock – infection-induced vasodilation and hypotension.
9. Anaphylaxis – massive allergic reaction causing vasodilation, airway constriction, shock.
10. Embolism – traveling clot, air, or foreign material blocks vital vessel.

Seek emergency care for any signs of circulatory collapse.