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Dynamic Pulmonary Vein Stenosis After Left Pneumonectomy
Motoyoshi Takahara1, Michiyo Yamano1, Tetsuhiro Yamano1
1Department of Cardiovascular Medicine, Graduate School of Medical Science, Kyoto Prefectural University of Medicine Kyoto, Japan.
JACC. Case Reports
|April 22, 2024
Summary
Pulmonary vein stenosis can occur after pneumonectomy due to mediastinal shift. Postural changes, like the left lateral decubitus position, can worsen this condition, as seen in a patient with worsening dyspnea.
Area of Science:
- Cardiology
- Thoracic Surgery
- Pulmonary Medicine
Background:
- Pulmonary vein stenosis (PVS) is a known complication following thoracic surgery, particularly pneumonectomy.
- Mediastinal shift into the pleural space after lung removal can potentially compromise pulmonary veins.
Observation:
- A patient presented with progressive dyspnea, specifically exacerbated in the left lateral decubitus position post-left pneumonectomy.
- Transthoracic echocardiography was performed to evaluate the cause of positional dyspnea.
Findings:
- Transthoracic echocardiography revealed significant pulmonary vein stenosis.
- The degree of pulmonary vein stenosis was observed to worsen when the patient was in the left lateral decubitus position.
Implications:
- This case highlights a potential mechanism for PVS after pneumonectomy related to postural changes and mediastinal dynamics.
- Understanding posture-dependent PVS is crucial for diagnosing and managing dyspnea in post-pneumonectomy patients.
- Further investigation into the relationship between mediastinal shift, patient positioning, and PVS is warranted.
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