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. 2018 Oct 9;74(4):413–416. doi: 10.1136/thoraxjnl-2018-212021

Figure 1.

Figure 1

Lungs transplanted between 4 and 8 AM have a higher incidence of PGD. Results from a retrospective cohort study showed that lungs reperfused between 4 and 8 AM had a higher incidence of PGD grades 2 and 3 after transplantation (p=0.01, univariate logistic regression) (A). A similar effect was seen for the severest form of PGD, grade 3, however, this was not significant (p=0.15, univariate logistic regression) (B). No difference was seen in surrogate markers of human performance between the two time points (C). Analysis of double lung transplant recipients from the same cohort controlling for circadian factors revealed that PGD incidence oscillated in a sinusoidal manner 24 hours after the operation (p=0.03, EU circwave) (D). A number of other covariates were also measured in our cohort (E), the effect of reperfusion time was still seen after controlling for these in the multivariate logistic regression model. BMI, body mass index; COPD, chronic obstructive pulmonary disease; PGD, primary graft dysfunction; TLC, total lung capacity.