Dear students,

this mcq is made because many students confuse the action of NE on cardiac output as increased?????????

norephinephrine causes

1. Increase cardiac output, bradycardia
2. decrease cardiac output, bradycardia
3. Increase cardiac output, Tachycardia
4. decrease cardiac output, tachycardia

GG 13E/P 197

norephinephrine on infusion

• increases systolic and diastolic pressures and  pulse pressure
• Cardiac output is unchanged or decreased
• total peripheral resistance is increased
•  Compensatory vagal reflex activity DECREASES heart rate (bradycardia)
• stroke volume increased

REMEmBER: CO = stroke volume  X Heart rate

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