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Optimised coronary CTA examination protocol. Common contraindications to metoprolol administration: haemodynamic instability, SBP <90 mmHg, heart rate <50/min, sick sinus syndrome, atrioventricular blockage II°/III°, severe asthma, intake of non-dihydropyridine calcium channel blockers, allergy to beta-blockers. CTA, CT angiography; G, gauge; i.v.: intravenously; SBP, systolic blood pressure; s.l., sublingually.
