Panic disorder respiratory subtype: psychopathology and challenge tests – an update

Panic disorder (PD) pathophysiology is very heterogeneous, and the discrimination of distinct subtypes could be very useful. A subtype based on respiratory symptoms is known to constitute a specific subgroup. However, evidence to support the respiratory subtype (RS) as a distinct subgroup of PD with...

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Main Authors: Renata T. Okuro, Rafael C. Freire, Walter A. Zin, Laiana A. Quagliato, Antonio E. Nardi
Format: Article
Language:English
Published: Associação Brasileira de Psiquiatria (ABP) 2020-02-01
Series:Brazilian Journal of Psychiatry
Subjects:
Online Access:http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-44462020000400015&tlng=en
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author Renata T. Okuro
Rafael C. Freire
Walter A. Zin
Laiana A. Quagliato
Antonio E. Nardi
author_facet Renata T. Okuro
Rafael C. Freire
Walter A. Zin
Laiana A. Quagliato
Antonio E. Nardi
author_sort Renata T. Okuro
collection DOAJ
description Panic disorder (PD) pathophysiology is very heterogeneous, and the discrimination of distinct subtypes could be very useful. A subtype based on respiratory symptoms is known to constitute a specific subgroup. However, evidence to support the respiratory subtype (RS) as a distinct subgroup of PD with a well-defined phenotype remains controversial. Studies have focused on characterization of the RS based on symptoms and response to CO2. In this line, we described clinical and biological aspects focused on symptomatology and CO2 challenge tests in PD RS. The main symptoms that characterize RS are dyspnea (shortness of breath) and a choking sensation. Moreover, patients with the RS tended to be more responsive to CO2 challenge tests, which triggered more panic attacks in this subgroup. Future studies should focus on discriminating respiratory-related clusters and exploring psychophysiological and neuroimaging outcomes in order to provide robust evidence to confirm RS as a distinct subtype of PD.
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spelling doaj.art-a6ff795eb7a8465d86bf9e0be4358ffe2022-12-21T19:36:14ZengAssociação Brasileira de Psiquiatria (ABP)Brazilian Journal of Psychiatry1809-452X2020-02-0142442043010.1590/1516-4446-2019-0717Panic disorder respiratory subtype: psychopathology and challenge tests – an updateRenata T. Okurohttps://orcid.org/0000-0003-2401-9681Rafael C. FreireWalter A. ZinLaiana A. QuagliatoAntonio E. Nardihttps://orcid.org/0000-0002-2152-4669Panic disorder (PD) pathophysiology is very heterogeneous, and the discrimination of distinct subtypes could be very useful. A subtype based on respiratory symptoms is known to constitute a specific subgroup. However, evidence to support the respiratory subtype (RS) as a distinct subgroup of PD with a well-defined phenotype remains controversial. Studies have focused on characterization of the RS based on symptoms and response to CO2. In this line, we described clinical and biological aspects focused on symptomatology and CO2 challenge tests in PD RS. The main symptoms that characterize RS are dyspnea (shortness of breath) and a choking sensation. Moreover, patients with the RS tended to be more responsive to CO2 challenge tests, which triggered more panic attacks in this subgroup. Future studies should focus on discriminating respiratory-related clusters and exploring psychophysiological and neuroimaging outcomes in order to provide robust evidence to confirm RS as a distinct subtype of PD.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-44462020000400015&tlng=enPanic disorderpanic attackscarbon dioxiderespirationdyspneasymptoms
spellingShingle Renata T. Okuro
Rafael C. Freire
Walter A. Zin
Laiana A. Quagliato
Antonio E. Nardi
Panic disorder respiratory subtype: psychopathology and challenge tests – an update
Brazilian Journal of Psychiatry
Panic disorder
panic attacks
carbon dioxide
respiration
dyspnea
symptoms
title Panic disorder respiratory subtype: psychopathology and challenge tests – an update
title_full Panic disorder respiratory subtype: psychopathology and challenge tests – an update
title_fullStr Panic disorder respiratory subtype: psychopathology and challenge tests – an update
title_full_unstemmed Panic disorder respiratory subtype: psychopathology and challenge tests – an update
title_short Panic disorder respiratory subtype: psychopathology and challenge tests – an update
title_sort panic disorder respiratory subtype psychopathology and challenge tests an update
topic Panic disorder
panic attacks
carbon dioxide
respiration
dyspnea
symptoms
url http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-44462020000400015&tlng=en
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AT rafaelcfreire panicdisorderrespiratorysubtypepsychopathologyandchallengetestsanupdate
AT walterazin panicdisorderrespiratorysubtypepsychopathologyandchallengetestsanupdate
AT laianaaquagliato panicdisorderrespiratorysubtypepsychopathologyandchallengetestsanupdate
AT antonioenardi panicdisorderrespiratorysubtypepsychopathologyandchallengetestsanupdate