Related Experiment Videos
Haemodynamic study of prolonged deep accidental hypothermia
European Journal of Intensive Care Medicine
|May 1, 1975
Summary
Accidental deep hypothermia causes hypovolemia and cardiac insufficiency. Isoproterenol infusion during hypothermia improved cardiac function, resolving abnormalities upon rewarming.
Area of Science:
- Cardiology
- Physiology
- Emergency Medicine
Background:
- Accidental deep hypothermia presents significant physiological challenges.
- Hemodynamic alterations in hypothermia are complex and require thorough investigation.
Purpose of the Study:
- To investigate the hemodynamic effects of accidental deep hypothermia.
- To assess the impact of fluid resuscitation and Isoproterenol on cardiac function in hypothermia.
Main Methods:
- Right heart catheterization was performed on six patients with accidental deep hypothermia.
- Hemodynamic parameters were measured before and after fluid expansion, with and without Isoproterenol, at hypothermic and normothermic temperatures.
Main Results:
- Patients exhibited hypovolemia, decreased cardiac output, and reduced ventricular filling pressures.
- Cardiac insufficiency was noted after fluid correction, exacerbated by bradycardia.
- Left ventricular function was impaired in prolonged cold exposure but improved with Isoproterenol and rewarming.
Conclusions:
- Hypothermia induces significant hemodynamic disturbances, including hypovolemia and cardiac dysfunction.
- Isoproterenol administration can mitigate cardiac abnormalities during hypothermia.
- Fluid resuscitation and rewarming are crucial for restoring normal cardiac function.