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Successful repeat ECMO in a patient with AIDS and ARDS.

ABSTRACT: Veno-venous extracorporeal membrane oxygenation (ECMO) is being more commonly used in patients with acute respiratory distress syndrome (ARDS) due to potentially reversible illnesses. Survival from ARDS using ECMO has been reported even in patients with AIDS. However, the indications for ECMO for ARDS due to immune reconstitution inflammatory syndrome (IRIS) in patients with AIDS are unknown. A 23-year-old man with AIDS and Pneumocystis jirovecii pneumonia was admitted to the intensive care unit with severe ARDS refractory to mechanical ventilator support requiring ECMO. Although ECMO was discontinued, a second treatment with ECMO was necessary due to IRIS-associated ARDS, resulting in an excellent patient outcome. This patient's clinical course suggests two important messages. First, ECMO is a reasonable option for the treatment of patients with ARDS even in a patient with AIDS. Second, ECMO may be effective for the treatment of patients with IRIS.

SUBMITTER: Horikita S

PROVIDER: S-EPMC5534656 | biostudies-other | 2017 Jun

REPOSITORIES: biostudies-other

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Project description:BACKGROUND:Herpesviridae reactivation among non-immunocompromised critically ill patients is associated with impaired prognosis, especially during acute respiratory distress syndrome (ARDS). However, little is known about herpes simplex virus (HSV) and Cytomegalovirus (CMV) reactivation occurring in patients with severe ARDS under veno-venous extracorporeal membrane oxygenation (ECMO). We tried to determine the frequency of Herpesviridae reactivation and its impact on patients' prognosis during ECMO for severe ARDS. RESULTS:During a 5-year period, 123 non-immunocompromised patients with a severe ARDS requiring a veno-venous ECMO were included. Sixty-seven patients (54%) experienced HSV and/or CMV reactivation during ECMO course (20 viral co-infection, 40 HSV alone, and 7 CMV alone). HSV reactivation occurred earlier than CMV after the beginning of MV [(6-15) vs. 19 (13-29) days; p?<?0.01] and after ECMO implementation [(2-8) vs. 14 (10-20) days; p?<?0.01]. In univariate analysis, HSV/CMV reactivation was associated with a longer duration of mechanical ventilation [(22-52.5) vs. 17.5 (9-28) days; p?<?0.01], a longer duration of ECMO [15 (10-22.5) vs. 9 (5-14) days; p?<?0.01], and a prolonged ICU [29 (19.5-47.5) vs. 16 (9-30) days; p?<?0.01] and hospital stay [44 (29-63.5) vs. 24 (11-43) days; p?<?0.01] as compared to non-reactivated patients. However, in multivariate analysis, viral reactivation remained associated with prolonged MV only. When considered separately, both HSV and CMV reactivation were associated with a longer duration of MV as compared to non-reactivation patients [29 (19.5-41) and 28 (20.5-37), respectively, vs. 17.5 (9-28) days; p?<?0.05]. Co-reactivation patients had a longer duration of MV [58.5 (38-72.3); p?<?0.05] and ICU stay [51.5 (32.5-69) vs. 27.5 (17.75-35.5) and 29 (20-30.5), respectively] as compared to patients with HSV or CMV reactivation alone. In multivariate analysis, HSV reactivation remained independently associated with a longer duration of MV and hospital length of stay. CONCLUSIONS:Herpesviridae reactivation is frequent among patients with severe ARDS under veno-venous ECMO and is associated with a longer duration of mechanical ventilation. The direct causative link between HSV and CMV reactivation and respiratory function worsening under ECMO remains to be confirmed.

Project description:BackgroundEfficacy and safety of different hemoglobin thresholds for transfusion of red blood cells (RBCs) in adults with an acute respiratory distress syndrome (ARDS) are unknown. We therefore assessed the effect of two transfusion thresholds on short-term outcome in patients with ARDS.MethodsPatients who received transfusions of RBCs were identified from a cohort of 1044 ARDS patients. After propensity score matching, patients transfused at a hemoglobin concentration of 8 g/dl or less (lower-threshold) were compared to patients transfused at a hemoglobin concentration of 10 g/dl or less (higher-threshold). The primary endpoint was 28-day mortality. Secondary endpoints included ECMO-free, ventilator-free, sedation-free, and organ dysfunction-free composites.Measurements and main resultsOne hundred ninety-two patients were eligible for analysis of the matched cohort. Patients in the lower-threshold group had similar baseline characteristics and hemoglobin levels at ARDS onset but received fewer RBC units and had lower hemoglobin levels compared with the higher-threshold group during the course on the ICU (9.1 [IQR, 8.7-9.7] vs. 10.4 [10-11] g/dl, P < 0.001). There was no difference in 28-day mortality between the lower-threshold group compared with the higher-threshold group (hazard ratio, 0.94 [95%-CI, 0.59-1.48], P = 0.78). Within 28 days, 36.5% (95%-CI, 27.0-46.9) of the patients in the lower-threshold group compared with 39.5% (29.9-50.1) of the patients in the higher-threshold group had died. While there were no differences in ECMO-free, sedation-free, and organ dysfunction-free composites, the chance for successful weaning from mechanical ventilation within 28 days after ARDS onset was lower in the lower-threshold group (subdistribution hazard ratio, 0.36 [95%-CI, 0.15-0.86], P = 0.02).ConclusionsTransfusion at a hemoglobin concentration of 8 g/dl, as compared with a hemoglobin concentration of 10 g/dl, was not associated with an increase in 28-day mortality in adults with ARDS. However, a transfusion at a hemoglobin concentration of 8 g/dl was associated with a lower chance for successful weaning from the ventilator during the first 28 days after ARDS onset.Trial registrationClinicalTrials.gov NCT03871166.

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Successful repeat ECMO in a patient with AIDS and ARDS.

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