large PA size on CT can suggest pulmonary hypertension but does not tell severity

• related: pulmonary hypertension
• tags: #permanent
• source: Murray and Nadel Textbook of Respiratory Medicine

PA diameter over 29 mm or PA to aorta ratio > 1 suggest pulmonary hypertension.

Progressive dilation of PA size is a function of duration of pulmonary hypertension and not severity.

Links to this note

• pulmonary hypertension
  • large PA size on CT can suggest pulmonary hypertension but does not tell severity