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. 2017 Mar 17;114(11):179-185.
doi: 10.3238/arztebl.2017.0179.

Lung Transplantation in Germany Since the Introduction of the Lung Allocation Score

Jens Gottlieb  1 , Jacqueline Smits, Rene Schramm, Frank Langer, Roland Buhl, Christian Witt, Martin Strueber, Hermann Reichenspurner
Affiliations

Lung Transplantation in Germany Since the Introduction of the Lung Allocation Score

Jens Gottlieb et al. Dtsch Arztebl Int. .

Abstract

Background: The allocation of donor lungs for transplantation in Germany was changed on 10 December 2011 to a system based on the Lung Allocation Score (LAS). The aim of the present study is to determine whether this change has prolonged the survival of patients on the transplant waiting list and of those who have undergone lung transplantation (LTx).

Methods: We retrospectively compared data from the three-year periods before and after the change to an LAS-based allocation system (2009-2011 vs. 2012-2014).

Results: The number of patients on the active waiting list declined from 606 on 12/31/2011 to 432 on 12/31/2014, a 29% decrease. The number of patients who died while on the waiting list fell from 306 in 2009-2011 to 226 in 2012-2014 (-26%, p = 0.04). Waiting-list mortality declined across all disease groups. Meanwhile, the number of lung transplantation procedures per year increased by 21% over the period of observation, from 865 to 1045. During the period in which the LAS was used, the proportion of transplant recipients with restrictive lung disease (46% vs. 31%; p<0.001) surpassed the proportion of those with a diagnosis of obstructive lung disease (33% vs. 40%; p = 0.003). The percentage of transplantations in patients treated with mechanical ventilation or extracorporeal respiratory support before transplantation rose from 9% to 13%. The one-year survival rate after lung transplantation was 76% in 2009-2011 and 81% in 2012-2014.

Conclusion: The introduction of the LAS in Germany was associated with a decrease in the number of patients on the waiting list, and also in the number of deaths among patients on the waiting list. The distribution of primary diagnoses among transplant recipients shifted away from obstructive and toward restrictive lung diseases. In the future, additional parameters of patients on the waiting list should be considered to enable further improvement of the allocation model.

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Figures

Figure 1
Figure 1
Distribution of primary diagnoses of lung disease among patients who died while on the waiting list for lung transplantation in Germany; A–D, diagnosis groups; LAS, Lung Allocation Score
Figure 2
Figure 2
Primary diagnoses of patients undergoing lung transplantation in Germany, 2009–2014; A–D, diagnosis groups; LAS, Lung Allocation Score
Figure 3
Figure 3
Kaplan–Meier survival curve after lung transplantation (log-rank test, p<0.001)
See this image and copyright information in PMC

Comment in

References

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