Functional Respiratory Disorders

Butani, Lavjay; O’Connell, Edward J.

doi:10.1016/s1081-1206(10)63094-3

Cited by 72 publications

(83 citation statements)

References 37 publications

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“…23,24 Particularly important alternative diagnoses are hyperventilation syndromes and vocal cord dysfunction, especially in the presence of asthma-like symptoms. 25 Despite an extensive search, for the majority of children in this study we were unable to offer an alternative diagnosis to dif®cult asthma. Although the diagnostic yield from bronchoscopy itself was low, the procedure is important in excluding important causes of wheezing such as tracheo-or bronchomalacia and congenital abnormalities, such as tracheal webs.…”

Section: Alternative Diagnosesmentioning

confidence: 89%

Difficult asthma: Defining the problems

et al. 2001

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Section: Alternative Diagnosesmentioning

confidence: 89%

Difficult asthma: Defining the problems

et al. 2001

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“…33 Functional respiratory complaints such as habit cough 18 or sigh dyspnoea 21 are common at this age, 34 both in athletic 35 and non-athletic children. 36 In addition, obesity 37 and poor physical fitness 23 are growing problems among children across North America.…”

Section: Discussionmentioning

confidence: 99%

How accurate is the diagnosis of exercise induced asthma among Vancouver schoolchildren?

Seear

Wensley²,

West³

2005

Archives of Disease in Childhood

131

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“…Flow volume loops obtained during attacks typically show a blunted inspiratory component in these patients. 8 Such laboratory values may help differentiate PVCD from asthma, but recent studies 9 documented the presence of asthma in as many as half of all patients with PVCD. Therefore, the diagnostic standard for PVCD is direct observation of TVC adduction during inspiration, expiration, or both during laryngoscopy.…”

Section: Discussionmentioning

confidence: 99%

“…Previous studies 8,9,21,24 have proposed a link between psychological illness or stressors and PVCD. Maschka et al 16 further subdivide this group into malingering patients motivated by secondary gain, and conversion disorder patients who are overwhelmed by social stresses.…”

Section: Commentmentioning

confidence: 97%

Paradoxical Vocal Cord Dysfunction in Juveniles

Powell¹,

Karanfilov²,

Beechler³

et al. 2000

Arch Otolaryngol Head Neck Surg

139

106

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Objective: To evaluate demographic and videolaryngoscopic features in a large series of juveniles with paradoxical vocal cord dysfunction (PVCD).Design: Case series data from videolaryngoscopic tapes retrospectively evaluated in a masked, controlled fashion, and demographic data collected via retrospective medical chart review.Setting: A tertiary care otolaryngology and speech pathology referral center.Patients: Twenty-two patients with PVCD aged 18 years and younger diagnosed as having PVCD at The Ohio State University Voice Institute, Columbus.Main Outcome Measures: Age, sex, social history, and medical history (demographic); epiglottic position, arytenoid and interarytenoid appearance, phase 0 stability, true vocal cord respiratory motion, degree of anteroposterior (AP) constriction, and false vocal cord adduction (videolaryngoscopic).Results: Of 22 patients, 18 were girls, and 12 had significant social stressors, particularly organized sports. Nineteen patients had posterior laryngeal changes commonly found in gastroesophageal reflux disease. Twelve patients demonstrated abnormal true vocal cord adduction during quiet respiration. Seven patients demonstrated supraglottic anteroposterior constriction and false vocal cord approximation during phonation. Conclusions:Juvenile PVCD is more common in girls and is associated with social stresses. Anatomic laryngeal changes typically associated with gastroesophageal reflux disease are extremely common in these patients. Juveniles with PVCD frequently demonstrate abnormal true vocal cord adduction during quiet respiration. We recommend that initial evaluation of juvenile patients for possible PVCD be conducted via transnasal fiberoptic laryngoscopy while the patient is asymptomatic, and that strong consideration be given to empiric pharmacological treatment of gastroesophageal reflux disease in juveniles diagnosed as having PVCD.

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Functional Respiratory Disorders

Cited by 72 publications

References 37 publications

Difficult asthma: Defining the problems

Difficult asthma: Defining the problems

How accurate is the diagnosis of exercise induced asthma among Vancouver schoolchildren?

Paradoxical Vocal Cord Dysfunction in Juveniles

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