geoscience.net logo
+ Resolve Article
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter

+ Translate
+ Subscribe to Site Feed
GeoScience Most Shared ContentMost Shared Content

Aerodynamic characteristics of the Nijdam voice prosthesis in relation to tracheo-esophageal wall thickness


, : Aerodynamic characteristics of the Nijdam voice prosthesis in relation to tracheo-esophageal wall thickness. European Archives Of Oto-Rhino-Laryngology. 254(1): 1-5

Tracheo-esophageal speech using various prostheses is currently the most successful form of voice and speech rehabilitation for laryngectomees. Main inter-device differences are durability and trans-device pressure loss during speech. The valveless indwelling Nijdam voice prosthesis is a new voice prosthesis. A barrier mechanism is created by a combination of the esophageal mucosa and the umbrella-like "hat" of the prosthesis that covers the esophageal side of the tracheo-esophageal fistula. The Nijdam prosthesis can be used clinically for longer periods of time when compared to such other indwelling voice prostheses as the Provox prosthesis and the low-resistance Groningen prosthesis. However, trans-device pressure loss during speech has been unknown. Adjustment of the shaft length of the Nijdam voice prosthesis to tracheo-esophageal wall thickness was expected to affect trans-device pressure loss during speech. We report the results of in vitro tests to quantify the effect of tracheo-esophageal wall thickness on trans-device pressure loss. In the present study pressure loss was measured at different air flow rates in relation to tracheo-esophageal wall thickness. Findings demonstrated that when shaft length of the Nijdam prosthesis corresponded exactly to tracheo-esophageal wall thickness, trans-device pressure loss was comparable to that of the Provox prosthesis. If a relatively shorter Nijdam prosthesis was chosen to prevent aspiration from occurring, the pressure loss across the prosthesis increased to that of the low-resistance Groningen prosthesis.

US$19.90

PMID: 9115703

DOI: 10.1007/bf02630747


Other references

Davis, E.; Waters, E.; Wake, M.; Goldfeld, S.; Williams, J.; Mehmet-Radji, O.; Oberklaid, F., 2005: Population health and wellbeing: identifying priority areas for Victorian children. Background: Population health information, collected using soundly-designed methodologies, is essential to inform policy, research, and intervention programmes. This study aimed to derive policy-oriented recommendations for the content of a health...

Bjørndal, B.; Myklebust, L.M.; Rosendal, K.Roger.; Myromslien, Føydis.D.; Lorens, J.B.; Nolan, G.; Bruland, O.; Lillehaug, J.R., 2006: RACK1 regulates Ki-Ras-mediated signaling and morphological transformation of NIH 3T3 cells. Ras mutations are involved in a significant fraction of human tumors. A suppressor screen using a retroviral mouse fibroblast cDNA library was performed to identify novel factors in Ras-mediated transformation. We identified a novel potent inhibi...

Kubik, A.; Zatloukal, P.; Tomasek, L.; Dolezal, J.; Syllabova, L.; Kara, J.; Kopecky, P.; Plesko, I., 2008: A case-control study of lifestyle and lung cancer associations by histological types. The objective of the study was to investigate the contribution of dietary factors and physical exercise to the variation in the risk of lung cancer and its major histological types among men and women in the Czech Republic, and reveal interactions...

Pivetti-Pezzi, P.; Accorinti, M.; Abdulaziz, M.A.; L.C.va, M.; Torella, M.; Riso, D., 1995: Behçets disease in children. Ophthalmic and clinical analysis were carried out on 16 children and 122 adult patients affected by Behçet's disease (BD) to delineate the clinical features of BD in childhood and to investigate the differences between the expression of the...

Wani, A.Hamid.; K Sinha, S., 2015: An improvisation in fixation of stamm gastrostomy in neonates. Journal of Neonatal Surgery 4(1): 8-8

Hoppin, J.; Orcutt, K.Davis.; Hesterman, J.Y.; Silva, M.D.; Cheng, D.; Lackas, C.; Rusckowski, M., 2011: Assessing antibody pharmacokinetics in mice with in vivo imaging. Recent advances in small-animal molecular imaging instrumentation combined with well characterized antibody-labeling chemistry have enabled detailed in vivo measurements of antibody distribution in mouse models. This article reviews the strengths...

Kontturi M.; Kujansuu E., 1982: Urinary fistulae caused by gynecological therapy seen in 1 urological unit. Urinary fistulae (37) caused by gynecological operations and radiotherapy were analyzed. The original disease was malignant in 24 cases and benign in 13 cases. The cause of the fistula was simple hysterectomy in 11 cases, radical hysterectomy in 5...

Bykova, V.P.; Dzhalilov, D.S.; Yerofeeva, L.A.; Logunov, A.I.; Nikolaev, M.P.; Tsyrulnikova, L.G., 1993: Influence of dibunol on the course of experimental sinusitis. Experimental sinusitis in rabbits was induced by a chemical burn of the mucous membrane. Local application of dibunol decreased the intensity of the purulent inflammation in the sinuses and that of perifocal serous inflammation. Serous inflammatio...

Shigeshiro, H., 1964: Studies On Fingerprints And Palmar Dermatoglyphics Of The Inhabitants Of Mitsuki Gun, Hiroshima Prefecture. Nagasaki Igakkai Zasshi 39: 147-163

Dobbelaere, D.; Eichhorn, M., 1994: FYN and LCK activation in Theileria parva infected T-cells. Experientia (Basel) 50(ABSTR ): A66