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Heart transplant candidates at high risk can be identified at the time of initial evaluation
Insights
Identifying high-risk markers in heart transplant candidates is crucial. Initial evaluation parameters like blood pressure and pulmonary pressures can help select patients who benefit most from aggressive therapy or mechanical bridging.
Area of Science:
- Cardiology
- Transplantation Medicine
- Critical Care Medicine
Background:
- The demand for heart transplantation exceeds donor organ availability, necessitating better patient selection.
- Accurate risk stratification at initial evaluation is vital for optimizing treatment strategies.
Purpose of the Study:
- To identify prognostic markers from initial evaluations that predict outcomes in heart transplant candidates.
- To determine if specific parameters can guide decisions regarding aggressive therapy or mechanical bridging.
Main Methods:
- Retrospective analysis of 91 heart transplant candidates from a cohort of 140 referred patients.
- Multivariate analysis of 26 parameters assessed at initial evaluation.
- Comparison of parameters between transplanted patients, non-survivors, and survivors.
Main Results:
- Four parameters at initial evaluation significantly distinguished non-survivors from survivors: mean arterial pressure, pulmonary capillary wedge pressure, mean pulmonary artery pressure, and fractional shortening.
- The causes of death in non-survivors were primarily pump failure (72%) and sudden cardiac death (28%).
- The specific mode of death could not be predicted by these initial markers.
Conclusions:
- Prognostic markers identified during initial evaluation can aid in more selective patient selection for cardiac transplantation.
- These markers may help identify candidates who would benefit from mechanical circulatory support or other aggressive interventions.
- Further research is needed to refine predictive models for heart transplant candidates.
Abstract:
The increasing discrepancy between the numbers of patients selected for cardiac transplantation and the available donor organs requires validation of markers of high risk at the time of initial evaluation that may help to determine which patients profit from aggressive therapy. We retrospectively examined the case records of 91 heart transplant candidates selected out of a total of 140 consecutive patients referred for evaluation. Of these 91 patients, 48 were transplanted during follow-up. Of the remaining 43 patients, 25 died after a mean survival time of 1.6 +/- 2.5 months. The causes of death were pump failure in 18 (72%) and sudden cardiac death in 7 (28%). Multivariate analysis identified 4 out of 26 parameters at initial evaluation that distinguished the 25 nonsurvivors from the 18 survivors. These were: mean arterial pressure (P = 0.03), pulmonary capillary wedge pressure (P = 0.002), mean pulmonary artery pressure (P = 0.001), and fractional shortening (P = 0.007). The mode of death could not be predicted. We conclude that there are prognostic markers at initial evaluation that allow more restrictive selection of patients for cardiac transplantation and mechanical bridging.