Hyperkalaemia presenting as ventilatory failure.
D005260:Female; D006484:Hemorrhoids / Q000601:surgery; D006801:Humans; D006947:Hyperkalemia / Q000150:complications*; D008875:Middle Aged; D011183:Postoperative Complications; D012121:Respiration, Artificial; D012131:Respiratory Insufficiency / Q000209:etiology*