whether a beta-blocker should be started before noncardiac surgery

Experts are debating whether a beta-blocker should be started before noncardiac surgery.

Recent American Heart Assoc guidelines recommend starting beta-blockers before surgery in high-risk patients...to reduce the risk of heart attack and death.

But now a large study with extended-release metoprolol (Toprol-XL) shows a LOWER risk of heart attack...but HIGHER risk of stroke and death.

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