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Removal from the "waiting list" for heart transplantation: a risk factor for sudden death?
C V Leier1, G Whitby, R A Kennedy
1Division of Cardiology, Ohio, State University College of Medicine, Columbus, USA.
Insights
Removing patients from the heart transplant waiting list may increase sudden death risk, especially for those with elevated ventricular filling pressures. Careful evaluation is crucial for heart transplant candidates.
Area of Science:
- Cardiology
- Transplantation Medicine
- Critical Care Medicine
Background:
- Heart transplantation is a life-saving procedure for end-stage heart failure.
- Patient selection and ongoing evaluation are critical for successful transplant outcomes.
- Identifying patients at risk after removal from the waiting list is essential.
Purpose of the Study:
- To evaluate the outcomes of patients removed from the heart transplant waiting list.
- To identify predictors of adverse events, specifically sudden death, in delisted patients.
Main Methods:
- Retrospective review of patients on a heart transplant waiting list over an 18-month period.
- Analysis of clinical status, exercise capacity, and laboratory values, including pulmonary capillary wedge pressure.
- Comparison of survival rates between delisted, newly listed, and newly transplanted patients.
Main Results:
- Ten patients were removed from the waiting list; 4 died suddenly within 4 months (60% 6-month survival).
- Newly listed patients had 80% 6-month survival, and newly transplanted patients had 92% 6-month survival.
- Elevated pulmonary capillary wedge pressure (>= 18 mmHg) was associated with sudden death in delisted patients.
Conclusions:
- Removal from the heart transplant waiting list may pose a risk of sudden death.
- Elevated ventricular filling pressures are a key risk factor for sudden death in delisted patients.
- Further research is needed to refine delisting criteria and mitigate risks.
Methods And Results:
Over an 18-month period, the patients on the heart transplantation waiting list at our institution were evaluated to determine if continued listing was appropriate. Ten patients were removed because of significant improvement in clinical status and exercise capacity (n = 9) or because of criteria violation (n = 1). Four of these patients died suddenly and unexpectedly within 4 months of delisting, resulting in a 6-month survival of 60% for the patients removed. During the same period, the 6-month survival for newly listed patients (n = 10) was 80% and that for newly transplanted patients (n = 13) was 92%. An elevated pulmonary capillary wedge pressure (> or = 18 mmHg) was the only clinical or laboratory feature that appeared to distinguish the four patients who died suddenly following delisting.
Conclusion:
The results of this preliminary study suggest that removal of a patient from a heart transplant waiting list may represent a risk for sudden death, particularly in patients with elevated ventricular filling pressures, irrespective of otherwise favorable clinical status and exercise performance.