Metformin-associated lactic acidosis (MALA) is a rare but serious adverse effect of the diabetes drug metformin in which the body accumulates too much lactic acid. Investigators developed and tested a protocol for diagnosis and treatment of MALA. Their work will be presented at ASN Kidney Week 2025 from November 5–9.
The protocol, which included immediate initiation of dialysis using either intermittent hemodialysis, continuous kidney replacement therapy, or peritonealdialysis as treatment, was implemented at Maharat Nakhonratchasima hospital (MNRH), in Thailand. Another hospital, Burirum Hospital (BH), did not implement the protocol. A total of 347 cases were included over 5 years (70 in MNRH pre-intervention, 129 in MNRH intervention, and 148 in BH).
In MNRH, the 30-day mortality rate was reduced from 25.7% to 13.9% after implementing the protocol, whereas in BH the 30-day mortality rate was not reduced during the same period (27.2% and 30%). The trend of mortality rate in MNRH during the intervention period decreased by -2.08% per quarter. The average door-to-dialysis time—the interval between a patient's hospital admission and the initiation of dialysis—was reduced from 870 minutes to 690 minutes, and MALA awareness increased from 38.5% to 89.9% after implementation.
A standardized MALA protocol covering diagnosis, access, and treatment shortened door-to-dialysis time, increased awareness, and reduced care variation. Fast-track dialysis pathways should be adopted for time-sensitive conditions like MALA. Availability of all dialysis modalities ensures flexibility and enables timely treatment initiation."
Watanyu Parapiboon, MD, corresponding author of Maharat Nakhon Ratchasima Hospital, Thailand
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