title: Pertussis pneumonia complicated by a hyponatremic seizure.
abstract: We present the case of a 6-week-old male infant who had a convulsion due to pertussis pneumonia. He was admitted to our emergency department because of lethargy and hypothermia. He developed a generalized tonic-clonic convulsion, requiring various treatments, including artificial ventilation. A chest CT showed bilateral pneumonia and laboratory data revealed hyponatremia with other features of the syndrome of inappropriate antidiuretic hormone secretion (SIADH). Although SIADH has been recognized as a cause of hyponatremia in association with pneumonia, there is little in the literature regarding SIADH caused by pertussis. Hyponatremia caused by SIADH must be considered as a differential diagnosis of seizures in pertussis infection of infants.
authors.affiliation: Department of Pediatrics, Niigata City General Hospital, Niigata, Japan. y-abe@hosp.niigata.niigata.jp
authors.forename: Yuki
authors.initials: Y
authors.lastname: Abe
authors.forename: Toru
authors.initials: T
authors.lastname: Watanabe
mesh_terms: D001919:Bradycardia / Q000209:etiology; D006801:Humans; D007010:Hyponatremia / Q000209:etiology*; D007177:Inappropriate ADH Syndrome / Q000097:blood / Q000209:etiology*; D007223:Infant; D007442:Intubation, Intratracheal; D008297:Male; D018410:Pneumonia, Bacterial / Q000097:blood / Q000150:complications*; D012131:Respiratory Insufficiency / Q000209:etiology / Q000628:therapy; D012640:Seizures / Q000097:blood / Q000209:etiology*; D014917:Whooping Cough / Q000097:blood / Q000150:complications*