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Right ventricular failure in patients requiring left ventricular assistance
G J Cooper1, P S Withington, A J Wood
1Department of Cardiothoracic Surgery, Queen Elizabeth Hospital, Birmingham, U.K.
Artificial Organs
|September 1, 1995
Summary
Right ventricular failure is a critical complication of left ventricular assist devices in postcardiotomy cardiogenic shock. This complication directly contributed to death in all observed cases, highlighting the need for biventricular support consideration.
Area of Science:
- Cardiology
- Cardiovascular Surgery
- Critical Care Medicine
Background:
- Left ventricular assist devices (LVADs) are crucial for managing cardiogenic shock.
- Right ventricular failure (RVF) can occur as a complication of LVAD support.
- Postcardiotomy cardiogenic shock presents unique challenges for hemodynamic management.
Purpose of the Study:
- To investigate the incidence and impact of RVF in patients receiving isolated LVAD support for postcardiotomy cardiogenic shock.
- To identify factors associated with the development of RVF in this patient population.
- To evaluate the implications of RVF on patient outcomes.
Main Methods:
- Retrospective analysis of 8 patients with postcardiotomy cardiogenic shock treated with isolated LVAD.
- Clinical data review focusing on hemodynamic parameters, RVF development, and graft characteristics.
- Correlation of RVF occurrence with surgical factors, particularly right coronary artery grafting.
Main Results:
- RVF developed in 5 out of 8 patients (62.5%) despite adequate LVAD function.
- RVF was the direct cause of death in all 5 patients who developed it.
- Difficulty in grafting a dominant right coronary artery was a common finding in patients who developed RVF.
Conclusions:
- Isolated LVAD support can be complicated by significant RVF in postcardiotomy cardiogenic shock.
- RVF is a major determinant of mortality in this setting.
- Early consideration of biventricular support is warranted in patients with risk factors for RVF, such as complex right coronary artery anatomy.