Nokea
A patient with secondary hypertension has come into the clinic for a routine check-up. The nurse is aware that the difference between primary hypertension and secondary hypertension is which of the following?
- A. Secondary hypertension has a specific cause
- B. Secondary hypertension has a more gradual onset than primary hypertension
- C. Secondary hypertension does not cause target organ damage
- D. Secondary hypertension does not normally respond to antihypertensive drug therapy
Correct Answer: A
Rationale: Secondary hypertension has a specific identified cause. A cause could include narrowing of the renal arteries, renal parenchymal disease, hyperaldosteronism, certain medications, pregnancy, and coarctation of the aorta. Secondary hypertension does respond to antihypertensive drug therapy and can cause target organ damage if left untreated.
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The nursing lab instructor is teaching student nurses how to take blood pressure. To ensure accurate measurement, the lab instructor would teach the students to avoid which of the following actions?
- A. Measuring the BP after the patient has been seated quietly for more than 5 minutes
- B. Taking the BP at least 10 minutes after nicotine or coffee ingestion
- C. Using a cuff with a bladder that encircles at least 80% of the limb
- D. Using a bare forearm supported at heart level on a firm surface
Correct Answer: B
Rationale: Blood pressures should be taken with the patient seated with arm bare, supported, and at heart level. The patient should not have smoked tobacco or taken caffeine in the 30 minutes preceding the measurement. The patient should rest quietly for 5 minutes before the reading is taken. The cuff bladder should encircle at least 80% of the limb being measured and have a width of at least 40% of limb circumference. Using a cuff that is too large results in a lower BP and a cuff that is too small will give a higher BP measurement.
The nurse is screening a number of adults for hypertension. What range of blood pressure is considered normal?
- A. Less than 140/90 mm Hg
- B. Less than 130/90 mm Hg
- C. Less than 129/89 mm Hg
- D. Less than 120/80 mm Hg
Correct Answer: D
Rationale: JNC 7 defines a blood pressure of less than 120/80 mm Hg as normal, 120 to 129/80 to 89 mm Hg as prehypertension, and 140/90 mm Hg or higher as hypertension.
The critical care nurse is caring for a patient just admitted in a hypertensive emergency. The nurse should anticipate the administration of what medication?
- A. Warfarin (Coumadin)
- B. Furosemide (Lasix)
- C. Sodium nitroprusside (Nitropress)
- D. Ramipril (Altace)
Correct Answer: C
Rationale: The medications of choice in hypertensive emergencies are those that have an immediate effect. IV vasodilators, including sodium nitroprusside (Nitropress), nicardipine hydrochloride (Cardene), clevidipine (Cleviprex), fenoldopam mesylate (Corlopam), enalaprilat, and nitroglycerin, have immediate actions that are short lived (minutes to 4 hours), and they are therefore used for initial treatment. Ramipril is administered orally and would not meet the patients immediate need for BP management. Diuretics, such as Lasix, are not used as initial treatments and there is no indication for anticoagulants such as Coumadin.
A 40-year-old male newly diagnosed with hypertension is discussing risk factors with the nurse. The nurse talks about lifestyle changes with the patient and advises that the patient should avoid tobacco use. What is the primary rationale behind that advice to the patient?
- A. Quitting smoking will cause the patients hypertension to resolve
- B. Tobacco use increases the patients concurrent risk of heart disease
- C. Tobacco use is associated with a sedentary lifestyle
- D. Tobacco use causes ventricular hypertrophy
Correct Answer: B
Rationale: Smoking increases the risk for heart disease, for which a patient with hypertension is already at an increased risk. Quitting will not necessarily cause hypertension to resolve and smoking does not directly cause ventricular hypertrophy. The association with a sedentary lifestyle is true, but this is not the main rationale for the nurses advice; the association with heart disease is more salient.
A patient in hypertensive urgency is admitted to the hospital. The nurse should be aware of what goal of treatment for a patient in hypertensive urgency?
- A. Normalizing BP within 2 hours
- B. Obtaining a BP of less than 110/70 mm Hg within 36 hours
- C. Obtaining a BP of less than 120/80 mm Hg within 36 hours
- D. Normalizing BP within 24 to 48 hours
Correct Answer: D
Rationale: In cases of hypertensive urgency, oral agents can be administered with the goal of normalizing BP within 24 to 48 hours. For patients with this health problem, a BP of 120/80 mm Hg may be unrealistic.