Dengue Cardiomyopathy Treatment Strategy Optimisation by Integrating Point-of-Care Ultrasound with VExUS

Dengue fever is an arthropod-borne viral disease that is widespread throughout the world. We report a case of dengue cardiomyopathy that was detected and treated to best effect using point of care ultrasound (POCUS) and the VExUS score. A 75-year-old lady with no known comorbidities presented with a ten-day history of fever, vomiting, loose stool, and poor appetite. Upon arrival, she was febrile and hypotensive. POCUS examination showed reduced left ventricular systolic function, inferior vena cava measuring 2.27 cm and VExUS grading of 2 to 3. Dengue serology IgM and IgG were positive and NT-proBNP was raised at 12500 pg/ml. Instead of fluid resuscitation, diuretic and inotropes were initiated along the line of cardiogenic shock secondary to dengue cardiomyopathy. Serial normal cardiac enzymes and electrocardiogram excluded acute coronary syndrome. She was discharged well, and repeated echocardiography one-month post discharge showed normal left ventricular systolic function with no clinical signs or symptoms of heart failure.