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Spontaneous regression of peripheral pulmonary artery stenosis in Williams syndrome
H Miyamura1, H Watanabe, S Tatebe
1Department of Thoracic and Cardiovascular Surgery, Niigata University School of Medicine, Japan.
Insights
Peripheral pulmonary artery stenosis in infants with Williams syndrome may improve spontaneously over time. This finding suggests careful consideration for interventional catheterization in these patients.
Area of Science:
- Cardiology
- Pediatrics
- Genetics
Background:
- Williams syndrome is a genetic disorder associated with cardiovascular abnormalities, including peripheral pulmonary artery stenosis.
- Peripheral pulmonary artery stenosis can significantly impact cardiac function and patient prognosis.
Observation:
- A 17-year follow-up of an infant girl with Williams syndrome and multiple peripheral pulmonary artery stenoses was conducted.
- Serial cardiac catheterizations were performed to monitor the progression of the stenosis.
Findings:
- Spontaneous, gradual regression of peripheral pulmonary artery stenosis was observed over 17 years.
- Systolic pressure gradients across the stenoses decreased significantly, from 77-79 mmHg to 23-29 mmHg.
- This contrasts with the typically progressive nature of systemic artery stenosis in Williams syndrome.
Implications:
- Peripheral pulmonary artery stenosis in Williams syndrome may have a capacity for spontaneous improvement.
- Interventional catheterization for peripheral pulmonary artery stenosis in Williams syndrome requires careful consideration of indications.
- Further research is needed to understand the mechanisms of spontaneous regression and optimize management strategies.
Abstract:
An infant girl diagnosed with multiple peripheral pulmonary artery stenosis and Williams syndrome was followed-up for 17 years. Three cardiac catheterizations performed over the follow-up period showed that spontaneous gradual regression of the stenosis occurred with time. The initial systolic pressure gradient of 77-79 mmHg at the stenoses had decreased to 23-29 mmHg when measured at 17 years of age. Contrary to the progressive nature of systemic artery stenosis in Williams syndrome, peripheral pulmonary artery stenosis appears to have the capacity for spontaneous improvement. Careful consideration is required to determine the indications for interventional catheterization for the dilation of peripheral pulmonary artery stenosis in cases of Williams syndrome.