Severe lactic acidosis associated with antiretroviral therapy
Keywords:
lactic acidosis, antiretroviral therapy, HIV infectionAbstract
Lactic acidosis is a rare but potentially fatal complication of
antiretroviral therapy with nucleoside analogue reverse transcriptase inhibitors. The authors present the case of a 30-year old HIV positive woman, treated with didanosine, stavudine and
efavirenz for six months, who was admitted to our Intensive Care
Unit for severe lactic acidosis. On admission she was confused,
with abdominal pain and her respiratory rate was increased. The
blood pH was 6.68 and she had a serum lactate of 25 mmol/L
which rose up to 28 mmol/L. Besides respiratory support and
fl uids with bicarbonates, she was treated with tiamin, riboflavin
and l-carnitine. She had several complications namely circulatory shock, steatohepatitis, pancreatitis, renal insufficiency and
ventilator associated pneumonia. She was discharged after 31
days with marked clinical improvement.
The authors discuss the pathophysiologic mechanisms, risk
factors, clinical aspects, therapeutics, and prevention strategies for lactic acidosis.
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