Select the preferred beta-blockers used for the treatment of chronic heart failure.
A. Metoprolol (Lopressor) and carvedilol (Coreg)
B. Atenolol (Tenormin) and metoprolol (Lopressor)
C. Ramipril (Altace) and Lisinopril (Zestril)
D. None of the above
Answer: A
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What is the most common clinical manifestation of coarctation of the aorta?
a. Clubbing of the digits b. Upper extremity hypertension c. Pedal edema and portal congestion d. Loud systolic ejection murmur
A nurse is providing care for a 79-year-old female patient who has been admitted for treatment of a urinary tract infection. Which of the nurse's following actions is most in need of modification?
A) The nurse is maintaining a 24-hour fluid balance record. B) The nurse is maintaining a fluid restriction for the patient to prevent incontinence. C) The nurse has encouraged the patient's family to bring in unsweetened cranberry juice for the patient. D) The nurse is advocating for the removal of the patient's urinary catheter that was inserted in the emergency department.
The client, who has cataracts in both eyes, asks why surgery is being done first on only the eye with the poorer vision. What is the nurse's best answer?
A. "Insurance reimbursement dictates the timing of the surgeries." B. "The eye with the poorer vision is at greatest risk for permanent damage if surgery is delayed." C. "If the eye with the best vision has surgery first, the intraocular pressure in the poorer eye could increase to the extent that permanent damage results." D. "The eye with the poorer vision undergoes surgery first so that if a complication arises in that eye, you will still have some vision in the better eye."
Which of the following is a coefficient of determination?
a. r b. r2 c. ? d. ?