Why is the client with polycythemia vera at an increased risk for a myocardial infarction?
A. The rapid synthesis of cells greatly increases metabolism.
B. The abnormal hemoglobin in the erythrocytes inadequately oxygenates the myo-cardium.
C. The increased number of erythrocytes increases blood viscosity and the workload of the heart.
D. The disease is most prevalent among men in their 60s and 70s who have other conditions that damage the heart.
C
Blood viscosity is increased with the hypercellularity, increasing the demand of the pumping ac-tion of the heart.
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Lidocaine may be used for treating dysrhythmias in which situation?
a. The dysrhythmias are not ventricular in nature. b. The label indicates that the medication contains preservatives. c. The medication is given intravenously. d. The patient is alert and responsive.
What is a major disadvantage of using broad-spectrum antibmicrobial agents to treat infections?
a. They are only effective against a small number of microorganisms. b. They destroy normal flora, enabling superinfections to develop. c. They are especially effective against viruses. d. They are more likely to cause an allergic reaction.
A community health nurse is trying to locate information commonalities among marginalized groups. The nurse is interested in knowing about the number of noninstitutionalized individuals who have a limitation in usual activities due to a chronic condition
Which group would provide the most pertinent information to the nurse? A) The Centers for Disease Control and Prevention B) The U.S. Census Bureau C) The World Health Organization D) The National Center for Health Statistics
The nurse is providing patient education to a patient who is to begin taking atovaquone and proguanil (Malarone). Which statement by the patient best demonstrates understanding of the administration of this medication?
"I will take proguanil a. with food or milk." b. at least 2 hours after a meal." c. on an empty stomach to promote absorption." d. at least 1 hour after food or drink."