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Acute β-blockade has been associated with poor perioperative outcomes in non-cardiac surgery patients, probably as a result of P-blocker-induced haemodynamic instability during the perioperative period, which has been shown to be more severe in hypertensive patients.

samj. south african medical journal/south african medical journal

The impact of acute preoperative beta-blockade on perioperative cardiac morbidity and all-cause mortality in hypertensive South African vascular surgery patients