2004年3月1日 · If VCD is considered during PFT, direct laryngoscopy should be available to visually confirm the paradoxic vocal cord motion if induced. The real role of PFT is determining if there is a ...

Vocal cord dysfunction (i.e., vocal cords closing when they should be opening, particularly during inspiration) should be suspected in patients presenting with inspiratory...

Vocal cord dysfunction (VCD) is a term that refers to inappropriate adduction of the vocal cords during inhalation and sometimes exhalation. It is a functional disorder that serves as an important mimicker of asthma. Vocal cord dysfunction can be difficult to treat as the condition is often underappreciated and misdiagnosed in clinical practice.

2010年11月1日 · Terminology describing these disorders can be confusing. POLO best describes VCD (alternatively termed PVFM) and laryngomalacia, with each characterized by episodes of dyspnea and noisy breathing. VCD should be limited to vocal cord adduction primarily associated with inspiration but may be noted during expiration.

First, 3 staff pulmonologists (who were blinded to the laryngoscopy results), scored 3 flow-volume loops from each PFT session on the likelihood that the inspiratory curve indicated VCD. We also performed a cross-sectional study of clinical characteristics and spirometric data from all patients who underwent laryngoscopy for any indication ...

2013年2月5日 · Diagnosis of VCD involves three main criteria: clinical symptoms, laryngoscopy, and PFT. 6 Clinical symptoms occur intermittently and most commonly include dyspnea, stridor, and wheezing. It is important to distinguish wheezing in the neck and upper airways as opposed to wheezes in the lower airways.

2010年11月1日 · There are three main criteria to establish the diagnosis of VCD (Table 3). These include the following: (1) clinical symptoms of noisy breathing and dyspnea, (2) laryngoscopic evidence of vocal cord adduction, and (3) confirmatory PFT findings of an abnormal FVL (most commonly the inspiratory limb) or lack of airway hyperreactivity.

A PD(20) FEV(1) < 0.24 mg methacholine predicted VCD with a sensitivity of 85% and a specificity of 75%. VCD patients showed significantly lower PFT parameters after challenge; FEV(1) : VCD 58.5 ± 20.1%, non-VCD 80.2 ± 18.0%, and HCs 98.7 ± 16.6% (P < 0.0001).

Vocal Cord Dysfunction means that your vocal cords do not act normally. It is also called paradoxical vocal fold motion disorder. With VCD, instead of your vocal cords opening when you breathe in and out, your vocal cords close. When your vocal cords close, it makes it harder to get air into or out of your lungs.

2024年6月24日 · Vocal cord dysfunction (VCD), also commonly known as paradoxical vocal fold motion, can be characterized as an abnormal adduction of the vocal cords during the...