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01.12.2018 | Case report | Ausgabe 1/2018 Open Access

Journal of Medical Case Reports 1/2018

Effect of high-flow high-volume-intermittent hemodiafiltration on metformin-associated lactic acidosis with circulatory failure: a case report

Zeitschrift:
Journal of Medical Case Reports > Ausgabe 1/2018
Autoren:
Kodai Suzuki, Hideshi Okada, Shozo Yoshida, Haruka Okamoto, Akio Suzuki, Keiko Suzuki, Yuto Yamada, Hideki Hayashi, Ryu Yasuda, Tetsuya Fukuta, Yuichiro Kitagawa, Takahito Miyake, Tomonori Kawaguchi, Takatomo Watanabe, Tomoaki Doi, Keisuke Kumada, Hiroaki Ushikoshi, Tadashi Sugiyama, Yoshinori Itoh, Shinji Ogura

Abstract

Background

Metformin-associated lactic acidosis is a well-known life-threatening complication of metformin. We here report the case of a patient who developed metformin-associated lactic acidosis without organ manifestations, due to the simultaneous ingestion of an overdose of metformin and alcohol, and who recovered with high-flow high-volume intermittent hemodiafiltration.

Case presentation

A 44-year-old Asian woman with type 2 diabetes attempted suicide by ingesting 10 tablets of metformin 500 mg and drinking approximately 600 mL of Japanese sake containing 15% alcohol. She was transferred to our emergency department because of disturbed consciousness. Continuous intravenous administration of noradrenalin (0.13 μg/kg per minute) was given because she was in shock. Laboratory findings included a lactate level of 119 mg/dL (13.2 mmol/L), bicarbonate of 14.5 mmol/L, and serum metformin concentration of 1138 ng/mL. She was diagnosed as having metformin-associated lactic acidosis worsened by alcohol. After 4560 mL of bicarbonate ringer (Na+ 135 mEq/L, K+ 4 mEq/L, Cl 113 mEq/L, HCO3 25 mEq/L) was administered, high-flow high-volume intermittent hemodiafiltration.
(dialysate flow rate: 500 mL/min, substitution flow rate: 3.6 L/h) was carried out for 6 h to treat metabolic acidosis and remove lactic acid and metformin. Consequently, serum metformin concentration decreased to 136 ng/mL and noradrenalin administration became unnecessary to maintain normal vital signs. On hospital day 12, she was moved to the psychiatry ward.

Conclusions

HFHV-iHDF may be able to remove metformin and lactic acid efficiently and may improve the condition of hemodynamically unstable patients with metformin-associated lactic acidosis.

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