Abstract:Objective To analyze the effects of non-invasive positive pressure ventilation (NPPV) on brain natriuretic peptide (BNP) and left ventricular function in patients with diastolic cardiac insufficiency (DHF) complicated with obstructive sleep apnea hypoventilation syndrome (OSAHS).Methods From May 2018 to May 2020, 148 patients with DHF complicated with OSAHS treated in Peking University International Hospital were selected as the research object. They were randomly divided into routine group and NPPV group, with 74 cases in each group. The routine group was treated with routine drugs, and the NPPV group was treated with NPPV. The clinical efficacy, left ventricular function, sleep index, blood gas index, and serum factors were compared between the two groups.Results There was no significant difference in the total effective rate between NPPV group (97.30%) and routine group (93.24%) (P > 0.05). After treatment, LVEF in NPPV group was higher than that in routine group, and the scores of LVESD, LVEDd, AHI, Mai, and ESS in NPPV group were lower than those in routine group (P < 0.05); PaO2 in NPPV group was higher than that in routine group, while PaCO2, ODI, BNP, CRP and cTnI were lower than those in routine group (P < 0.05).Conclusions DHF with OSAHS is effectively treated with NPPV, which can improve hypoxia and left ventricular function, improve night sleep quality, reduce BNP level, and inhibit inflammatory response.