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Do blood phobia patients hyperventilate during exposure by breathing faster, deeper, or both?
Depression and anxiety, 2009-02, Vol.26 (2), p.E60-E67
Ritz, Thomas
Wilhelm, Frank H.
Meuret, Alicia E.
Gerlach, Alexander L.
Roth, Walton T.
2009
Details
Autor(en) / Beteiligte
Ritz, Thomas
Wilhelm, Frank H.
Meuret, Alicia E.
Gerlach, Alexander L.
Roth, Walton T.
Titel
Do blood phobia patients hyperventilate during exposure by breathing faster, deeper, or both?
Ist Teil von
Depression and anxiety, 2009-02, Vol.26 (2), p.E60-E67
Ort / Verlag
Hoboken: Wiley Subscription Services, Inc., A Wiley Company
Erscheinungsjahr
2009
Link zum Volltext
Quelle
EBSCOhost Psychology and Behavioral Sciences Collection
Beschreibungen/Notizen
Background: Recently we found that patients with blood‐injection‐injury (BII) phobia tend to hyperventilate when exposed to feared stimuli. Hyperventilation results from increases in minute ventilation above levels required by metabolic demand and can result from increases in either frequency or depth of breathing, or a combination of both. Method: In order to determine which of these factors contributed most to hyperventilation in BII phobia we analyzed breathing patterns of BII phobia patients (N=12) and non‐anxious controls (N=14), recorded with respiratory inductance plethysmography. Participants viewed ten film clips of either an emotionally positive, negative, or neutral quality, as well as surgery and asthma‐relevant clips. During five film clips (one from each category) they also tensed their leg muscles. Results: Minute ventilation was markedly increased in blood phobia patients compared to other groups during surgery films. Also, tidal volume and irregularity of tidal volume showed strong increases, while respiration rate was not affected. Leg muscle tension increased ventilation in general but far below the extent brought about by hyperventilation in BII phobia. Patients who were breathing deeper during exposure reported stronger symptoms of dizziness, light‐headedness and faintness. In general, patients showed a higher rate of spontaneous sighs throughout all film presentations, but not at baseline. Conclusion: Thus, hyperventilation in blood phobia is produced by excessively deep and irregular breathing and may contribute to fainting responses. Behavioral interventions for BII phobia could benefit from attention to this aspect of dysfunctional breathing. Depression and Anxiety, 2009. © 2008 Wiley‐Liss, Inc.
Sprache
Englisch
Identifikatoren
ISSN: 1091-4269
eISSN: 1520-6394
DOI: 10.1002/da.20466
Titel-ID: cdi_proquest_miscellaneous_66925584
Format
–
Schlagworte
Adult
,
anxiety
,
Arousal
,
Blood
,
blood-injection-injury phobia
,
Female
,
Humans
,
hyperventilation
,
Hyperventilation - psychology
,
Injections - psychology
,
Male
,
Middle Aged
,
Phobic Disorders - psychology
,
Plethysmography, Whole Body
,
Respiration
,
Syncope - psychology
,
Wounds and Injuries - psychology
,
Young Adult
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