title: [Immediate hypertensive flare-up after coronary bypass. A predictable complication].
abstract: An immediate post-operative rise in blood-pressure occurred in 44% of 191 patients undergoing coronary bypass. In a retrospective study of the patients' records, the authors have endeavoured to determine which of the 23 parameters characteristic of each patient was predictive of post-bypass hypertension. Using a Bayesian discriminant analysis method, they found that the only variables predictive of hypertension in 86% of the cases were an history of myocardial infarction and the urinary sodium/ potassium ratio. When combined, an urinary Na/K ratio below 1 and the absence of previous infarction constitute a good index of possible post-operative rise in blood pressure.
mesh_terms: D001026:Coronary Artery Bypass / Q000009:adverse effects*; D006801:Humans; D006973:Hypertension / Q000209:etiology*; D009203:Myocardial Infarction / Q000150:complications; D011188:Potassium / Q000652:urine; D012189:Retrospective Studies; D012306:Risk; D012964:Sodium / Q000652:urine
chemical_list: D012964:Sodium; D011188:Potassium
vernacular_title: Poussée hypertensive immédiate après pontage coronaire. Une complication prévisible.