NPPB and hydrops fetalis: Unadjusted models demonstrated a significant association between MACE and all PV loop parameters (<i>P</i> < 0.05 for all), HF etiology (<i>P</i> < 0.001), left ventricular ejection fraction (<i>P</i> = 0.003), global longitudinal strain (<i>P</i> < 0.001), and N-terminal prohormone of brain natriuretic peptide level (<i>P</i> = 0.001).