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Transplant Proc. 2016 Sep;48(7):2352-2355. doi: 10.1016/j.transproceed.2016.06.010.

Respiratory Profile in Patients After Liver Transplantation.

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Gastrocenter Unicamp, University City, Campinas/SP, Brazil. Electronic address:
Gastrocenter Unicamp, University City, Campinas/SP, Brazil.



Patients in the immediate post-operative liver transplantation (LxT) period can develop respiratory and functional complications. In the postoperative months, these functions tend to improve. Nevertheless, there are few studies that evaluate precisely and specifically respiratory function in post-LxT long-term after surgery. The objective of the study was to describe the respiratory profile of patients 1 to 6 months after LxT, accompanied by LxT outpatients.


We included patients between 25 and 60 years old. We excluded patients with chronic renal or cerebrovascular impairment, severe heart disease, and history of lung surgery or liver re-transplantation. Evaluations were carried out on 3 occasions: 1 month, 3 months, and 6 months after LxT. The following evaluations were submitted: respiratory muscle strength (manuvacuometer), value flows and lung volumes (spirometer), and surface electromyography analyzing root mean square in the right (RMS-R) and left (RMS-L) diaphragm. We analyzed MELD (Model for End-Stage Liver Disease). After normality tests, we used the Friedman test (non-parametric values) and ANOVA (parametric values), P ≥ .5 with the use of SPSS 21.0.


Patients (n = 15) had a mean age of 53.0 ± 7.5 years and 25.9 ± 4.6 MELD score. The statistically significant value obtained at the 3 occasions of evaluation was RMS-R, with a decline during periods of evaluation. This can be caused by removal of the liver, resulting in a denervation and reduction in compliance of this portion of the muscle.


Patients between 1 and 6 months after transplantation have a specific respiratory profile, close to normal values. However, there are few studies on this subject, and we suggest that more research be done.

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