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Difficulty: EasyPharmacologic Interventions

An ambulatory care physician is evaluating a fifty-two-year-old male with consistently elevated blood pressure readings over the past three months. The patient's vitals today show a blood pressure of 150/95 mm Hg, a heart rate of 76/min, and a respiratory rate of 14/min. His medical background is notable for multiple painful episodes of podagra over the past five years, for which he takes daily allopurinol. The physician plans to prescribe a first-line daily oral medication to manage the newly diagnosed essential hypertension. Given the patient's comorbidities, which of the following pharmacologic agents should specifically be avoided?

  1. HydrochlorothiazideAnswer
  2. B
    Losartan
  3. C
    Amlodipine
  4. D
    Lisinopril
  5. E
    Diltiazem

Answer

Hydrochlorothiazide
The correct answer is Hydrochlorothiazide. This medication is a thiazide diuretic that decreases the renal excretion of uric acid, leading to elevated serum uric acid levels. In a patient with a known history of gout, initiating a thiazide diuretic can precipitate a painful acute gout flare. Therefore, it is generally considered contraindicated when other safe and effective first-line antihypertensive alternatives are readily available.

Step-by-Step Solution

1
Identify the patient's primary diagnosis requiring pharmacologic intervention.
The patient has newly diagnosed essential hypertension requiring first-line monotherapy.
Establishing the primary condition is necessary to determine the appropriate therapeutic class.
2
Identify the key comorbidity that acts as a constraint on drug selection.
The patient has a history of recurrent gout (indicated by podagra and allopurinol use).
Comorbidities frequently introduce relative or absolute contraindications for standard medications.
3
Evaluate the adverse effect profile of each antihypertensive option in the context of the patient's comorbidity.
Thiazide diuretics are known to cause hyperuricemia, whereas ARBs, ACE inhibitors, and calcium channel blockers generally do not.
Understanding side effect profiles prevents iatrogenic exacerbation of underlying conditions.

Key Concept

Pharmacologic management of hypertension in patients with gout requires avoiding thiazide diuretics due to their tendency to increase serum uric acid and precipitate acute flares.
Estimated Time:1m 0s
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Pharmacologic Interventions

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