title: Panic disorder respiratory subtype: a comparison between responses to hyperventilation and CO2 challenge tests.
abstract: In this study 117 panic disorder patients were divided into a respiratory subtype group and a non-respiratory subtype group. The respiratory subtype patients were observed to be more sensitive to the 35% CO(2) inhalation challenge test and the hyperventilation test than the non-respiratory subtype patients.
authors.affiliation: Laboratory of Panic & Respiration, Institute of Psychiatry, Federal University of Rio de Janeiro, Rua Visconde de Pirajá, 407/702, 22410-003, Rio de Janeiro, Brazil. rafaelcrfreire@terra.com.br
authors.forename: Rafael C
authors.initials: RC
authors.lastname: Freire
authors.forename: Fabiana L
authors.initials: FL
authors.lastname: Lopes
authors.forename: Alexandre M
authors.initials: AM
authors.lastname: Valença
authors.forename: Isabella
authors.initials: I
authors.lastname: Nascimento
authors.forename: Andre B
authors.initials: AB
authors.lastname: Veras
authors.forename: Marco A
authors.initials: MA
authors.lastname: Mezzasalma
authors.forename: Valfrido L
authors.initials: VL
authors.lastname: de-Melo-Neto
authors.forename: Walter A
authors.initials: WA
authors.lastname: Zin
authors.forename: Antonio E
authors.initials: AE
authors.lastname: Nardi
mesh_terms: D000280:Administration, Inhalation; D000328:Adult; D002245:Carbon Dioxide / Q000008:administration & dosage / Q000009:adverse effects*; D039721:Diagnostic and Statistical Manual of Mental Disorders; D005260:Female; D006801:Humans; D006985:Hyperventilation / Q000139:chemically induced* / Q000453:epidemiology*; D008297:Male; D016584:Panic Disorder / Q000453:epidemiology* / Q000209:etiology*
chemical_list: D002245:Carbon Dioxide