[Dysphagia] Respirodeglutometer

[Paula.Leslie at newcastle.ac.uk (Paula Leslie)]

Hello Danielle

I haven't used the RDometer itself but I have used a similar system we 
designed here. We have done lots of studies with simultaneous VF and had no 
problems.  You just sometimes need 3 hands and to be very organised!

If it's any help the papers are below and the authors details should be easy 
to find.

Paula


Dysphagia. 1999 Summer;14(3):131-8. Related Articles, Links  
Temporal and durational patterns associating respiration and swallowing.
Klahn MS, Perlman AL.
ITDS Intellicom, Champaign, Illinois, USA.
This study obtained initial normative data on the temporal coordination of 
respiration and swallowing events in 12 young adults using a first-generation 
Respirodeglutometer. In addition, direction of airflow before and after 
deglutive apnea was obtained. Three swallows of two viscosities of bolus 
material were performed by each subject, yielding a total of 72 swallows. 
Qualitative and quanitative analyses were performed. Time of onset of 
submental surface electromyography and time of laryngeal movement were found 
to differ between males and females. Males began submental muscle contraction 
before females and laryngeal movement after females. Duration of deglutition 
apnea for all swallows was 0.75 +/- 0.14 sec. Expiration occurred before the 
deglutition apnea 93% of the time and after the deglutition apnea 100% of the 
time. A modal pattern of events obtained with the Respirodeglutometer was 
present in 42% of the swallows, and an additional 47% had only one event 
differ from that order

Dysphagia. 2000 Spring;15(2):89-94. Related Articles, Links  
Respiratory and acoustic signals associated with bolus passage during 
swallowing.
Perlman AL, Ettema SL, Barkmeier J.
Department of Speech and Hearing Science, University of Illinois at 
Urbana-Champaign, Champaign, IL 61820, USA.
In order to advance our understanding of the relation between respiration and 
deglutition, simultaneous videofluoroscopy and respirodeglutometry was 
performed. Fifteen normal, healthy, young adults (20-29 years of age) were 
connected to a respirodeglutometer and positioned for simultaneous 
videofluoroscopic assessment in the lateral plane. Subjects performed three 
swallows each of a 5-ml and a 10-ml bolus of liquid barium and a 5-ml bolus of 
paste barium, for a total of nine swallows per subject. Location of the bolus 
head as identified with videofluoroscopy was associated with eight 
respirodeglutometric variables. In addition, temporal relations for seven 
respirodeglutometric variables were calculated as a function of bolus volume 
and viscosity. Significant temporal differences were found for five of the 
variables by volume. No significant temporal differences were noted by 
viscosity. Expiration occurred before 79% and after 96% of the swallows. The 
number of inspirations preceding a swallow suggested a possible effect 
resulting from the need to hold a bolus in the mouth before receiving 
instructions to swallow during videofluoroscopic assessment. This effect may 
be important during patient evaluation. For a significant number of swallows, 
respiratory flow ceased before the velum was fully elevated.



>===== Original Message From Dani "R?egg" <daniruegg@yahoo.com> =====
> I would like to know if someone has experience with a
>respirodeglutometer simultaneous to videofluoroscopy.
>Is a respirodeglutometer easy to manipulate? Where
>could I get some information about?
>Thanks for helping.
>Danielle

Paula Leslie
Degree Programme Director
Surgical and Reproductive Sciences
Faculty of Medical Sciences
University of Newcastle
Newcastle upon Tyne
NE2 4HH
UK
T +44 (0) 191 222 6279
F +44 (0) 191 222 8988
http://www.ncl.ac.uk/sars/postgrad/MSc.htm