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. 2012 Jul 25:137–161. doi: 10.1016/B978-1-4377-2787-6.00004-8

Table 4-2.

Preoperative Studies to Assess Pulmonary Hypertension

Study Possible Significant Findings
Arterial blood gas analysis Level of hypoxemia and acidosis; assess relative value of supplemental oxygen.
Chest radiography Enlarged pulmonary arterial root; enlarged right side of heart
Electrocardiography Dysrhythmias; signs of right-sided heart strain
Echocardiography Assess right ventricular function and hypertrophy, valvular dysfunction and right atrial enlargement, and patency of foramen ovale; estimate pulmonary artery pressure.