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Published on: July 18, 2014
A comparison of treatment strategies for hypoplastic left heart syndrome using decision analysis
P C Jenkins1, M F Flanagan, J D Sargent
1Department of Pediatrics, Dartmouth Medical School, Hanover, New Hampshire 03755, USA. pcj@hitchcock.org
Insights
The optimal treatment for hypoplastic left heart syndrome (HLHS) depends on donor availability and center-specific data. Early heart transplantation is best if a donor is found within one month; otherwise, staged surgery is preferred for better survival.
Area of Science:
- Pediatric cardiology
- Congenital heart disease research
- Surgical outcomes analysis
Background:
- Hypoplastic left heart syndrome (HLHS) presents complex treatment decisions.
- Treatment options include heart transplantation (Tx) or staged surgical palliation.
- Optimal strategy requires integrating patient-specific risk factors and institutional data.
Purpose of the Study:
- To identify the optimal treatment strategy for hypoplastic left heart syndrome (HLHS).
- To compare various treatment approaches including transplantation and staged surgery.
- To maximize first-year survival rates for HLHS patients.
Main Methods:
- Decision analysis modeling was used to evaluate six treatment strategies.
- Strategies included staged surgery, Tx, and staged surgery as a bridge to Tx.
- Probabilities were derived from literature and a dataset of 231 HLHS patients (1989-1994).
Main Results:
- Heart transplantation (Tx) is optimal if a donor is available within one month.
- If no donor is found by one month, staged surgery is the preferred approach.
- Staged surgery is optimal for centers with <10% organ donation rates at three months and <20% stage 1 mortality.
Conclusions:
- The optimal HLHS treatment strategy is contingent on local organ availability.
- Center-specific data, including stage 1 surgical mortality, are critical for decision-making.
- Individual patient risk factors must guide the choice between transplantation and staged palliation.
Objectives:
We sought to identify the optimal treatment strategy for hypoplastic left heart syndrome (HLHS).
Background:
Surgical treatment of HLHS involves either transplantation (Tx) or staged palliation of the native heart. Identifying the best treatment for HLHS requires integrating individual patient risk factors and center-specific data.
Methods:
Decision analysis is a modeling technique used to compare six strategies: staged surgery; Tx; stage 1 surgery as an interim to Tx; and listing for transplant for one, two, or three months before performing staged surgery if a donor is unavailable. Probabilities were derived from current literature and a dataset of 231 patients with HLHS born between 1989 and 1994. The goal was to maximize first-year survival.
Results:
If a donor is available within one month, Tx is the optimal choice, given baseline probabilities; if no donor is found by the end of one month, stage 1 surgery should be performed. When survival and organ donation probabilities were varied, staged surgery was the optimal choice for centers with organ donation rates < 10% in three months and with stage 1 mortality <20%. Waiting one month on the transplant list optimized survival when the three-month organ donation rate was > or =30%. Performing stage 1 surgery before listing, or performing stage 1 surgery after an unsuccessful two- or three-month wait for transplant, were almost never optimal choices.
Conclusions:
The best strategy for centers that treat patients with HLHS should be guided by local organ availability, stage 1 surgical mortality and patient risk factors.
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