A patient diagnosed with shock is prescribed dobutamine (Dobutrex). Which finding indicates this medication has been effective?
1. increased heart rate
2. reduced heart rate
3. decreased respiratory rate
4. decreased blood pressure
Correct Answer: 1
Dobutamine (Dobutrex) is a medication that mimics the fight-or-flight response of the sympathetic nervous system. The physiologic effect is improved perfusion and oxygenation of the heart, with increased stroke volume and heart rate, and increased cardiac output. Increased cardiac output, in turn, increases tissue perfusion and oxygenation. This medication will not reduce the heart rate, respiratory rate, or blood pressure.
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