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Successful weaning from inhaled nitric oxide using dipyridamole
Yoshikatsu Saiki1, Yoshio Nitta, Yusuke Tsuru
1Department of Cardiovascular Surgery, Tohoku University Hospital, 1-1 Seiryo-machi, Aoba-ku, Sendai 980-8574, Japan. ysaiki@mail.cc.tohuku.ac.jp
Summary
A patient with atrial septal defect and severe pulmonary hypertension experienced refractory hypertension post-surgery. Dipyridamole effectively managed rebound pulmonary hypertension after nitric oxide withdrawal.
Area of Science:
- Cardiology
- Pulmonary Medicine
- Surgical Innovation
Background:
- Atrial septal defect (ASD) can lead to severe pulmonary hypertension (PH).
- Surgical closure of ASD in severe PH cases requires careful operability assessment, often involving lung biopsy.
- Postoperative management of PH after ASD closure is critical.
Observation:
- A 33-year-old woman with ASD and severe PH underwent successful surgical closure.
- The patient developed refractory pulmonary hypertension post-surgery, requiring inhaled nitric oxide.
- Attempts to wean nitric oxide resulted in rebound pulmonary hypertension.
Findings:
- Dipyridamole administration blunted the rebound pulmonary hypertension.
- This finding suggests a potential therapeutic role for dipyridamole in managing nitric oxide withdrawal in specific PH cases.
- Lung biopsy assessment for operability in ASD with severe PH is a crucial diagnostic step.
Implications:
- Dipyridamole may offer a novel strategy for managing complex pulmonary hypertension post-ASD closure.
- This case highlights the challenges in treating refractory pulmonary hypertension and the need for advanced therapeutic options.
- Further research into dipyridamole's efficacy in similar clinical scenarios is warranted.