Postpartum Rapid Cardiopulmonary Deterioration in an Obese Mother and Congenital Pneumonia in the Neonate: A Dual Case Report.

The postpartum period demands close monitoring due to rapid hemodynamic and hormonal changes that can unmask subclinical conditions or exacerbate mild illnesses, particularly in individuals with comorbidities such as obesity. We report a case of a 31-year-old woman at 36 weeks of gestation with obesity and hypothyroidism, who presented with mild respiratory symptoms and had grade I diastolic dysfunction. Although outpatient treatment was initiated for a suspected respiratory infection, multidisciplinary evaluation led to the decision for cesarean delivery under spinal anesthesia. A late preterm female neonate was delivered, who subsequently developed respiratory distress, diagnosed as congenital pneumonia, and was managed successfully. Postoperatively, the mother's respiratory symptoms worsened, diastolic dysfunction progressed, and imaging revealed bilateral pleural effusion with right lung opacities, accompanied by elevated levels of C-reactive protein (CRP), an inflammatory marker. She was managed with appropriate antimicrobial therapy and supportive care, which resulted in gradual clinical improvement. This case report highlights the need for antepartum risk stratification, timely intervention, and meticulous postpartum monitoring to prevent adverse maternal and neonatal outcomes.