NPPB and hydrops fetalis: The results of a meta-analysis under a random-effects model showed that adjuvant PQS therapy significantly increased LVEF (MD = 6.23, 95% CI [4.35, 8.12], P < 0.00001), 6MWTD (MD = 25.26, 95% CI [8.23, 42.30], P = 0.004), and decreased BNP/NT-pro-BNP (MD = −187.94, 95% CI [−267.20, −108.67], P < 0.00001), LVEDV (MD = −22.83, 95% CI [−42.79, −2.87], P = 0.02), LVEDD (MD = −4.76, 95% CI [−5.77, −3.74], P < 0.00001), and LVESV (MD = −11.86, 95% CI [−19.89, −3.83], P = 0.004) in patients with HF.