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Hemorrhagic shock with paradoxical bradycardia
Intensive Care Medicine
|January 1, 1987
Summary
Paradoxical bradycardia in acute hemorrhagic shock indicates severe bleeding. Antishock trousers improved recovery speed and reduced fluid needs compared to fluid loading alone, but atropine should be avoided.
Area of Science:
- Emergency Medicine
- Trauma Care
- Cardiology
Background:
- Acute hemorrhagic shock is a critical condition often associated with tachycardia.
- Paradoxical bradycardia is a rare but significant finding in hemorrhagic shock.
Purpose of the Study:
- To investigate the incidence and characteristics of paradoxical bradycardia in pre-hospital acute hemorrhagic shock.
- To evaluate the efficacy of antishock trousers in managing paradoxical bradycardia.
Main Methods:
- Retrospective analysis of 273 acute hemorrhagic shock cases treated in an emergency care unit.
- Comparison of patients with paradoxical bradycardia versus tachycardia.
- Prospective evaluation of 7 new cases treated with antishock trousers.
Main Results:
- Seven percent (20/273) of patients presented with paradoxical bradycardia, characterized by consciousness and undetectable systolic pressure with palpable femoral pulse.
- Patients with paradoxical bradycardia experienced more severe and rapid hemorrhages.
- Antishock trousers significantly improved recovery from bradycardia and reduced fluid loading requirements (p < 0.01).
- Atropine administration in two patients led to adverse cardiac events, including ventricular fibrillation.
Conclusions:
- Paradoxical bradycardia in hemorrhagic shock signifies rapid, severe hemorrhage necessitating aggressive fluid resuscitation.
- Antishock trousers show promise in managing this condition.
- Atropine is contraindicated in conscious patients with hemorrhagic shock and paradoxical bradycardia due to potential for serious cardiac arrhythmias.