Journal of veterinary emergency and critical care (San Antonio, Tex. : 2001) · 2015
Hypokalemia and suspected renal tubular acidosis associated with topical carbonic anhydrase inhibitor therapy in a cat.
Клинический случайСтатьяНазвание и аннотация: Перевод в очереди
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Thiessen Charlotte E, Tofflemire Kyle L, Makielski Kelly M, Ben-Shlomo Gil, Whitley R David, Allbaugh Rachel A
Аннотация
OBJECTIVE: To describe the occurrence of hypokalemia, metabolic acidosis, and suspected renal tubular acidosis associated with the administration of topical ophthalmic carbonic anhydrase inhibitor (CAI) in a cat.
CASE SUMMARY: A 2-year-old, 5.3 kg, male, castrated, domestic short-haired cat developed hyporexia 6 weeks after starting topical ophthalmic dorzolamide 2% therapy for treatment of ocular hypertension. Two weeks later, the cat was evaluated for severe weakness, cervical ventroflexion, and anorexia. Plasma electrolyte and acid-base measurement revealed hypokalemia (K+ = 2.9 mmol/L; reference interval 3.8-5.4 mmol/L) and metabolic acidosis (plasma HCO3- = 9.8 mmol/L; reference interval 15-23 mmol/L) in the presence of a urine pH of 7.5 (reference interval 6.5-7.5). The pH abnormalities were consistent with a renal tubular acidosis. Clinical and biochemical abnormalities resolved with short-term supportive care, potassium supplementation, and discontinuation of dorzolamide therapy.
NEW OR UNIQUE INFORMATION PROVIDED: This is the first report of hypokalemia and metabolic acidosis associated with topical CAI therapy in a cat.
CASE SUMMARY: A 2-year-old, 5.3 kg, male, castrated, domestic short-haired cat developed hyporexia 6 weeks after starting topical ophthalmic dorzolamide 2% therapy for treatment of ocular hypertension. Two weeks later, the cat was evaluated for severe weakness, cervical ventroflexion, and anorexia. Plasma electrolyte and acid-base measurement revealed hypokalemia (K+ = 2.9 mmol/L; reference interval 3.8-5.4 mmol/L) and metabolic acidosis (plasma HCO3- = 9.8 mmol/L; reference interval 15-23 mmol/L) in the presence of a urine pH of 7.5 (reference interval 6.5-7.5). The pH abnormalities were consistent with a renal tubular acidosis. Clinical and biochemical abnormalities resolved with short-term supportive care, potassium supplementation, and discontinuation of dorzolamide therapy.
NEW OR UNIQUE INFORMATION PROVIDED: This is the first report of hypokalemia and metabolic acidosis associated with topical CAI therapy in a cat.