期刊
TRANSPLANT INFECTIOUS DISEASE
卷 24, 期 6, 页码 -出版社
WILEY
DOI: 10.1111/tid.13940
关键词
hyperammonemia syndrome; lung transplant; Ureaplasma; outcomes; mortality
This case series and literature review provide insights into hyperammonemia syndrome (HS) after lung transplant, highlighting the association with Ureaplasma spp. and Mycoplasma hominis infections. The findings emphasize the importance of early testing and treatment for these infections.
Background: Hyperammonemia syndrome (HS) is a rare post-transplant complication associated with high morbidity and mortality. Its incidence appears to be higher in lung transplant recipients and its pathophysiology is not well understood. In addition to underlying metabolic abnormalities, it is postulated that HS may be associated with Ureaplasma or Mycoplasma spp. lung infections. Management of this condition is not standardized and may include preemptive antimicrobials, renal replacement, nitrogen scavenging, and bowel decontamination therapies, as well as dietary modifications. Methods: In this case series, we describe seven HS cases, five of whom had metabolic deficiencies ruled out. In addition, a literature review was performed by searching PubMed following PRISMA-P guidelines. Articles containing the terms hyperammonemia and lung were reviewed from 1 January 1997 to 31 October 2021. Results: All HS cases described in our center had positive airway samples for Mycoplasmataceae, neurologic abnormalities and high ammonia levels post-transplant. Mortality in our group (57%) was similar to that published in previous cases. The literature review supported that HS is an early complication post-transplant, associated with Ureaplasma spp. and Mycoplasma hominis infections and of worse prognosis in patients presenting cerebral edema and seizures. Conclusion: This review highlights the need for rapid testing for Ureaplasma spp. and M. hominis after lung transplant, as well as the necessity for future studies to explore potential therapies that may improve outcomes in these patients.
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