Related Experiment Videos
Cardiac Doppler variation with volume status changes in general intensive care
Paulo Marcelino1, Francisca Frade, Susan Marum
1Unidade de Cuidados Intensivos do Hospital de Curry Cabral, Centro de Cardiologia da Universidade de Lisboa (LA3) Lisboa, Portugal. marcelinop@mail.telepac.pt
Summary
Fluid volume changes in critical care patients alter Doppler echocardiography findings, including mitral E/A ratio and inferior vena cava diameter. However, the extent of these changes is unpredictable and not strongly correlated with fluid balance.
Area of Science:
- Cardiology
- Critical Care Medicine
- Echocardiography
Background:
- Volume status is crucial in critical care.
- Doppler echocardiography assesses cardiac function and fluid status.
- Understanding fluid status effects on echocardiography is vital for patient management.
Purpose of the Study:
- To investigate the impact of fluid volume changes on cardiac Doppler echocardiography parameters.
- To correlate these echocardiographic changes with fluid balance and central venous pressure.
Main Methods:
- Studied 64 Intensive Care Unit patients, 24 on mechanical ventilation.
- Monitored changes in volume status and central venous pressure.
- Analyzed Doppler echocardiography features: mitral E/A ratio, deceleration time, isovolumic relaxation time, and inferior vena cava diameter/collapse.
Main Results:
- Fluid volume changes led to decreased mitral E/A ratio and mitral E wave deceleration time.
- Isovolumic relaxation time increased, and inferior vena cava diameter decreased with inspiratory collapse.
- No significant correlation found between Doppler parameters, volume changes, or central venous pressure.
Conclusions:
- Volume status modification significantly alters specific Doppler echocardiography features in critical care patients.
- The magnitude of these echocardiographic variations is unpredictable and not reliably linked to fluid balance or central venous pressure.