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Unexplained severe pulmonary hypertension in two brothers
H J Puolijoki1, K O Niemelä, L O Siitonen
1Dept. of Internal Medicine, Tampere University Central Hospital, Finland.
The European Respiratory Journal
|March 1, 1990
Summary
Two brothers developed unexplained pulmonary hypertension with simultaneous onset. Despite treatment and heart-lung transplantation, both brothers died, suggesting a potential genetic link to this rare condition.
Area of Science:
- Cardiology
- Genetics
- Pulmonology
Background:
- Pulmonary hypertension (PH) is a severe condition characterized by high blood pressure in the pulmonary arteries.
- Idiopathic pulmonary arterial hypertension (IPAH) is a rare form of PH with unknown cause, often with poor prognosis.
Observation:
- Two brothers, aged 17 and 26, presented with nearly simultaneous onset of unexplained pulmonary hypertension.
- Echocardiography showed right ventricular hypertrophy, dilatation, paradoxical septal motion, and enlarged pulmonary artery.
- Right heart catheterization revealed severely elevated pulmonary arterial pressures.
Findings:
- The younger brother exhibited significant pulmonary and tricuspid valve regurgitation and died suddenly three weeks later.
- The older brother initially responded to medical therapy, but pulmonary arterial pressures rebounded within eight months.
- The older brother underwent heart-lung transplantation due to worsening dyspnea but also died.
Implications:
- This case highlights a potential familial or genetic predisposition to unexplained pulmonary hypertension.
- The rapid progression and fatal outcomes in both siblings underscore the aggressive nature of this condition.
- Further research into genetic factors may be warranted for understanding and treating familial pulmonary hypertension.