Arch Otolaryngol Head Neck Surg
 1999
DOI: 10.1001/archotol.125.6.622
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Design and Test of a New Tracheostoma Valve Based on Inhalation

A.A. Geertsema
1
,
Cornelis W. Boonstra2,
Harm K. Schutte3

Abstract: The device appears to function well in physiological ranges and is optimally adjustable. The airflow resistance coefficient lies in the range of the entire airway resistance (120-470 Pa x s(2) x L(-2)) in quiet breathing.

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Cited by 8 publications

(11 citation statements)
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“…DISCUSSION Several researchers have measured the airflow resistance ofTSV s7, 8,18,19 and shunt valves,4,5,20-24 but the airflow resistance of HME filters has not been measured extensively. After I hour of breathing, the airflow resistance changed by 2% at the most.…”
Section: Resultsmentioning
confidence: 99%
Exaggerated anticipatory anxiety is common in social anxiety disorder (SAD). Neuroimaging studies have revealed altered neural activity in response to social stimuli in SAD, but fewer studies have examined neural activity during anticipation of feared social stimuli in SAD. The current study examined the time course and magnitude of activity in threat processing brain regions during speech anticipation in socially anxious individuals and healthy controls (HC). Method Participants (SAD n = 58; HC n = 16) underwent functional magnetic resonance imaging (fMRI) during which they completed a 90s control anticipation task and 90s speech anticipation task.
“…DISCUSSION Several researchers have measured the airflow resistance ofTSV s7, 8,18,19 and shunt valves,4,5,20-24 but the airflow resistance of HME filters has not been measured extensively. After I hour of breathing, the airflow resistance changed by 2% at the most.…”
Section: Resultsmentioning
confidence: 99%
Exaggerated anticipatory anxiety is common in social anxiety disorder (SAD). Neuroimaging studies have revealed altered neural activity in response to social stimuli in SAD, but fewer studies have examined neural activity during anticipation of feared social stimuli in SAD. The current study examined the time course and magnitude of activity in threat processing brain regions during speech anticipation in socially anxious individuals and healthy controls (HC). Method Participants (SAD n = 58; HC n = 16) underwent functional magnetic resonance imaging (fMRI) during which they completed a 90s control anticipation task and 90s speech anticipation task.
“…11 The peak inspiratory flow is 6.0 L/s 12 for healthy male subjects, and 2.5 L/s for asthma patients. 13 Geertsema et al 8 described an operating range of 1.7 to 3.8 L/s of closing flow in in vivo tests of their prototype. These physiologically attainable flows fall perfectly within the range of the iValve.…”
Section: Discussionmentioning
confidence: 99%
“…The opening pressure of the iValve should be just higher than the pressures required for intelligible speech in laryngectomy patients. Geertsema et al 8 described an operating range of 0.8 to 7.2 kPa for the opening pressure in in vivo tests of their prototype. Roxburgh and Perry 14 found a range of 1.52 to 7.85 kPa for speech at normal loudness using the Blom-Singer ATV.…”
Section: Discussionmentioning
confidence: 99%
Exaggerated anticipatory anxiety is common in social anxiety disorder (SAD). Neuroimaging studies have revealed altered neural activity in response to social stimuli in SAD, but fewer studies have examined neural activity during anticipation of feared social stimuli in SAD. The current study examined the time course and magnitude of activity in threat processing brain regions during speech anticipation in socially anxious individuals and healthy controls (HC). Method Participants (SAD n = 58; HC n = 16) underwent functional magnetic resonance imaging (fMRI) during which they completed a 90s control anticipation task and 90s speech anticipation task.
“…This inhalation TSV is also an improvement in comparison with the former inhalation TSV. 8 The new TSV is more reliable because of its simple construction of a valve revolving on an axis, which also makes the TSV cheaper to produce. Its low weight and small size make wearing the device comfortable.…”
Section: Discussionmentioning
confidence: 99%
Exaggerated anticipatory anxiety is common in social anxiety disorder (SAD). Neuroimaging studies have revealed altered neural activity in response to social stimuli in SAD, but fewer studies have examined neural activity during anticipation of feared social stimuli in SAD. The current study examined the time course and magnitude of activity in threat processing brain regions during speech anticipation in socially anxious individuals and healthy controls (HC). Method Participants (SAD n = 58; HC n = 16) underwent functional magnetic resonance imaging (fMRI) during which they completed a 90s control anticipation task and 90s speech anticipation task.
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