Which medication has a direct myocardial depressant effect on the heart?
a. Ketamine c. Succinylcholine
b. Barbiturates d. Opioids
A
Ketamine has a direct myocardial depressant effect that is usually counterbalanced by its indirect effect on the autonomic nervous system to increase heart rate and blood pressure. Succinylcholine stimulates the cholinergic receptors, enhancing vagal tone, and it can produce sinus bradycardia or junctional escape rhythms. Opioids may cause bradycardia because of direct stimulation of the vagus nerve. Barbiturates depress the activity of the vasomotor center, causing peripheral vasodilation and hypotension.
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A patient with a diagnosis of nonsmall cell lung cancer is currently undergoing chemotherapy
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A 62-year-old woman was admitted to the hospital yesterday evening with a diagnosis of cirrhosis. When planning the woman's care, what desired outcome should the nurse identify?
A) Patient will remain on bed rest and remain free of the complications of immobility. B) Patient will resume normal activity levels within 72 hours of admission. C) Patient will express an understanding of the importance of early ambulation. D) Patient will become independent with activities of daily living by day 5 of admission.
The patient is scheduled for a surgical procedure. The nurse plans to teach the patient about anesthesia. Which statement would be included in the best plan of the nurse?
1. "An inhaled agent needs to be followed by an intravenous (IV) agent if it is ineffective." 2. "An inhaled agent is used to induce sleep, followed by an intravenous (IV) agent for relaxation." 3. "An intravenous (IV) agent to induce sleep is usually all that is required." 4. "An intravenous (IV) agent will be used first to induce sleep; then, an inhaled agent will be used."
Patients receiving tube feedings are always NPO.
Answer the following statement true (T) or false (F)