Randomized controlled study of inhaled nitric oxide after operation for congenital heart disease Ronald W Day, MD, John A Hawkins, MD, Edwin C McGough, MD, Kevin L Crezeé, Garth S Orsmond, MD The Annals of Thoracic Surgery Volume 69, Issue 6, Pages 1907-1912 (June 2000) DOI: 10.1016/S0003-4975(00)01312-6
Fig 1 Ratio of systolic pulmonary and systolic systemic arterial pressures. In comparison to baseline, patients developed a small improvement in the ratio of systolic pulmonary and systolic systemic arterial pressures (systolic PAP/systolic SAP) after the onset of inhaled nitric oxide therapy (∗p = 0.011). However, there were no differences between patient groups at baseline or after 1 hour of observation. The Annals of Thoracic Surgery 2000 69, 1907-1912DOI: (10.1016/S0003-4975(00)01312-6)