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  • Title: Pulmonary artery pulsatility index as a predictor of right ventricular failure in left ventricular assist device recipients: A systematic review.
    Author: Essandoh M, Kumar N, Hussain N, Dalia AA, Wang D, Al-Qudsi O, Wilsak D, Stahl D, Bhatt A, Awad H, Sawyer TR, Iyer MH.
    Journal: J Heart Lung Transplant; 2022 Aug; 41(8):1114-1123. PubMed ID: 35644726.
    Abstract:
    BACKGROUND: It is critical to identify patients at increased risk of right ventricular failure (RVF) before left ventricular assist device (LVAD) implantation. Pulmonary artery pulsatility index (PAPi) is a hemodynamic parameter that is a specific measure of right ventricular function and may better identify LVAD recipients at risk for RVF. This systematic review analyzes the predictive value of preoperative PAPi to RVF in the setting of LVAD implantation. METHODS: Databases were searched for all studies reporting on PAPi and RVF after LVAD implantation. Data collected included: number of patients, patient characteristics, incidences of RVF, PAPi, central venous pressure (CVP), CVP/pulmonary capillary wedge pressure, tricuspid annular plane systolic excursion, and right ventricular stroke work index. RESULTS: Thirty-two studies (4,756 patients) were included in this review. The incidence of RVF was found to be 27.48% (1,307 patients). The weighted mean (standard deviation) of preoperative PAPi associated with RVF vs No RVF was 2.17 (2.36) and 2.87 (3.21), respectively. When comparing LVAD recipients with RVF and No RVF, patients who developed RVF had a significantly lower preoperative PAPi by a WMD (95% CI) of -0.74 [-1.00, -0.49] (p < .001). The remaining variables (CVP; CVP/pulmonary capillary wedge pressure; tricuspid annular plane systolic excursion; and right ventricular stroke work index) were also confirmed as predictors of RVF after LVAD implantation. CONCLUSIONS: This systematic review demonstrates the utility of PAPi as a clinical predictor of RVF after LVAD implantation. Based on our findings, we recommend that PAPi be used in conjunction with traditional hemodynamic parameters when risk stratifying LVAD recipients for RVF.
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