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Right ventricular performance in patients with acute respiratory failure
F Brunet1, J F Dhainaut, J Y Devaux
1Medical ICU, Cochin Port-Royal University Hospital, Paris, France.
Intensive Care Medicine
|January 1, 1988
Summary
Acute respiratory failure impacts right ventricular function, causing dilation and reduced ejection fraction. Survivors often normalize, while those with septic or cardiogenic shock experience severe biventricular impairment.
Area of Science:
- Cardiology
- Pulmonology
- Critical Care Medicine
Background:
- Acute respiratory failure (ARF) presents significant challenges to cardiovascular function.
- Understanding the right ventricular (RV) response in ARF is crucial for patient outcomes.
- The influence of underlying comorbidities on biventricular performance during ARF requires further elucidation.
Purpose of the Study:
- To investigate the serial changes in biventricular performance in patients with ARF.
- To specifically analyze the role of associated diseases in the RV response to ARF.
- To correlate biventricular function with mortality causes in ARF patients.
Main Methods:
- Serial echocardiographic studies were conducted in 34 patients diagnosed with ARF.
- Biventricular performance, including end-diastolic volume and ejection fraction, was assessed.
- Patients were categorized based on mortality causes: refractory hypoxemia, septic shock, and cardiogenic shock.
Main Results:
- Patients with ARF exhibited increased RV end-diastolic volume and decreased RV ejection fraction compared to controls.
- Survivors showed a trend towards normalization of RV function.
- Patients who died from septic shock or viral myocarditis demonstrated progressive biventricular dysfunction, with significantly reduced right and left ventricular ejection fractions, impacting stroke volume maintenance.
Conclusions:
- Acute respiratory failure induces significant right ventricular dilation and dysfunction.
- The ability to maintain stroke volume is compromised in ARF patients with associated septic or cardiogenic shock.
- Underlying conditions significantly modulate the biventricular response and prognosis in acute respiratory failure.