Variation of Plasma Electrolyte and Total Protein Levels in the Individual

An attempt has been made to sift some of the clinical experience from 155 consecutive cases of persistent ductus arteriosus.The results of surgery in 138 of these cases are presented briefly, together with the management of the 17 not submitted to operation.Experience is dis- cussed and present policies are outlined in dealing with this abnormality in children and adults and when it is complicated by pulmonary hypertension and bacterial endarteritis.We thank our colleagues in the cardio-surgical unit for permis- sion to present this work.The operations were performed by Mr. Douglas Robb and one of us (R. N.).