Send us Fan Mail In this retrospective single-center study from Toronto, Adrianne and Nim explore the echo findings of preterm infants with septic shock and hypoxemic respiratory failure. Contrary to the common assumption that elevated pulmonary vascular resistance drives hypoxemia in sepsis, the data points to left ventricular dysfunction as a key contributor. Babies with hypoxemic respiratory failure showed lower LV systolic and diastolic performance, while pulmonary pressures were similar ...