In Reply: We agree with Drs Gnecchi-Ruscone and Rigo that the range of normal for pulmonary artery systolic pressure is influenced by age and body weight. In the case of the individual presented in our Grand Rounds, the upper limit of normal for pulmonary artery systolic pressure, assuming an estimated right atrial pressure of 5 mm Hg, is approximately 30 mm Hg, given his age (younger than 49 years) and body mass index (less than 25 [calculated as weight in kilograms divided by height in meters squared]).1
Machado RF, Hsue PY, Barnett CF. Normal Range for Pulmonary Artery Systolic Pressure—Reply. JAMA. 2008;299(17):2022–2023. doi:10.1001/jama.299.17.2022-c
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