a. b. d. The most important positive inotropic agents produced by the body are norepinephrine released from the sympathetic nerves that supply the heart and epinephrine released by the adrenal cortex. Other positive inotropes include thyroid hormone and dopamine. (Select all that apply) a. b. d. The right lymphatic duct drains into which structure?
Amlodipine is a calcium channel blocker that decreases the oxygen needs of the heart by a negative inotropic effect. Amlodipine is a calcium channel blocker that decreases the oxygen demands of the heart by a positive chronotropic effect.
Procardia and Norvasc are indicated for chronic angina. A client prescribed nitroglycerin reports to the nurse that he is having headaches. How should the nurse best respond? "You may experience headaches as an adverse reaction to nitroglycerin." "Do not take any more nitroglycerin. It is increasing your blood pressure."
The most important negative inotropic agent is acetylcholine released. from the vagus nerve. The most important positive inotropic agents produced by the body are norepinephrine released from the. sympathetic nerves that supply the heart and epinephrine released by the adrenal cortex.
when it is stretched. An inotropic substance would increase the force of contraction and consist of hormones, neurotransmitters, or.
ANS: B decreases the strength of cardiac contractions. The L-type, or long-lasting, channels are the predominant type of calcium channels and are the channels blocked by calcium. channel-blocking drugs (verapamil, nifedipine, diltiazem). The major effect of these medications is to decrease the strength of.
Somatic control of the heart, arterioles, and veins. ANS: B sympathetic stimulation of the heart, arterioles, and veins . Reflex control of total cardiac output and peripheral resistance includes (1) sympathetic stimulation of the heart, arterioles, and. veins; and (2) parasympathetic stimulation of the heart only.
When treating allergies in a child, the nurse is aware that the classification for the drug of choice to control itching, sneezing, and rhinorrhea is: • Cancer. • Radiation therapy. • Severe stress. • Malnutrition. A 7-year-old girl has been battling leukemia and receiving radiation therapy.
After teaching the parents of a child diagnosed with pernicious anemia about the disorder and treatment, the nurse determines that the teaching was successful when the parents state: High urine specific gravity. A group of students are reviewing the effects of sickle cell anemia on the various parts of the body.
The nurse tells the mother that this is also known as: Mononucleosis. A high school football player comes to the clinic with malaise, fever, headache, and anorexia that have been present for the last few days. Upon physical examination, the nurse notes that the cervical lymph nodes are firm and tender.
The nurse is providing education regarding 2020 Health Goals to reduce the incidence of acquired immunodeficiency syndrome (AIDS) within the community.
Explanation: Traditional antianginal drugs that act via hemodynamic mechanisms (e.g., beta-blockers, calcium antagonists, nitrates) can pose a problem in older adults because of the associated higher risk of drug interactions and greater incidence of adverse drug effects.
Explanation: Beta-blockers are more effective than nitrates or calcium channel blockers in decreasing the likelihood of silent ischemia and improving the mortality rate after transmural MI. A client has had a myocardial infarction and is to receive propranolol. The nurse understands that this drug is being used to:
Teach patients to take their digoxin in divided doses with each meal. Assess the patient's heart rate and hold administration if it is less than 60. Teach patients the signs and symptoms of heart failure. Monitor therapeutic effects based on echocardiogram results.
Improved perfusion to all body tissues. Explanation: Cardiotonics are drugs used to increase the efficiency and improve the contraction of the heart muscle , which leads to improved blood flow (perfusion) to all tissues of the body.