She ended up in the ICU, where an intensive diagnosis process identified the source of her troubles: a rare heart disease called heritable pulmonary arterial hypertension. Two years later, Koverman started seeing the signs of untreated pulmonary hypertension again — this time in her sister, Katie Gusching, who had just welcomed her first child. Katie Gusching and Megan Koverman"It's good to have someone so close to you going through the same thing," Koverman said. "I started working in pulmonary hypertension before there were any treatments, which has been a long time," said Highland. Bobbie DeBrito PhotographyBoth women's pulmonary hypertension is currently under control, Highland said.