High Probability Ventilation-Perfusion Scan in Primary Pulmonary Hypertension

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Date
1995-1-1
Authors
Sharma, Sat
Leslie, William D
Lertzman, Morley
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Abstract
The perfusion lung scan is a valuable noninvasive tool in the evaluation of patients with pulmonary arterial hypertension of undetermined cause and for the exclusion of occult large-vessel pulmonary thromboembolism. Peripheral patchy defects have been reported in primary pulmonary hypertension (PPH) but there are no well documented reports of segmental or larger perfusion defects. A case of a 55-year-old male with severe pulmonary hypertension of unknown etiology who had persistent high probability perfusion scan patterns over a period of two years is reported. No evidence of thromboembolism was present on pulmonary angiography. A discussion of the case and a review of the literature on the role of lung scan in PPH are presented. Most patients with PPH have normal or low probability perfusion scans; high probability scans occur rarely.
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Sat Sharma, William D Leslie, and Morley Lertzman, “High Probability Ventilation-Perfusion Scan in Primary Pulmonary Hypertension,” Canadian Respiratory Journal, vol. 2, no. 3, pp. 179-182, 1995. doi:10.1155/1995/415017