EurekaMag.com logo
+ Translate

Evaluation of a new de fibrillation pathway tongue epigastric tongue apex route 2. impedance characteristics in human subjects


, : Evaluation of a new de fibrillation pathway tongue epigastric tongue apex route 2. impedance characteristics in human subjects. Journal of the American College of Cardiology 4(2): 253-258

An automated device for defibrillation using a vertical shock pathway (tongue-epigastric or tongue-apex) was developed. The energy requirements for defibrillation using vertical pathways are uncertain and will be determined largely by the impedance of the pathway. To determine the impedance characteristics of vertical defibrillation pathways in humans subjects, 20 patients undergoing elective cardioversion of atrial fibrillation or atrial flutter, or both, were studied. Patients received shocks from electrodes placed in tongue-epigastric or tongue-cardiac apex positions. The tongue electrode was a 12 cm2 metal plate fixed to a standard plastic oropharyngeal airway. The epigastric or cardiac apex electrode was a 40 cm2 selfadhesive pad. The electrodes were connected to a standard damped-sinusoidal waveform defibrillator. The 2 vertical shock pathways evidently had substantially higher impedance than the standard transthoracic pathway: tongue-epigastric pathway 130 .+-. 11.OMEGA. (SD), tongue-apex pathway 115 .+-. 12.OMEGA. transthoracic pathway 68 .+-. 11.OMEGA. (P < 0.05). The higher impedance is probably due to the longer interelectrode distances of vertical pathways: tongue-epigastric 33 .+-. 3 cm, tongue-apex 28 .+-. 3 cm, transthoracic 23 .+-. 3 cm (P < 0.05). Vertical pathway shocks were successful in the cardioversion of 15 of 20 patients. Four of the five patients in whom vertical shocks were unsuccessful subsequently underwent successful cardioversion by transthoracic shocks; the transthoracic shocks achieved a higher current because of lower impedance of the transthoracic route. Vertical shock pathways in human subjects apparently have higher impedance than do transthoracic pathways. Because of this higher impedance, higher energy may be required for vertical pathway defibrillation than for standard transthoracic defibrillation.

(PDF 0-2 workdays service)

Accession: 005395358

PMID: 6736465

Submit PDF Full Text: Here


Submit PDF Full Text

No spam - Every submission is manually reviewed

Due to poor quality, we do not accept files from Researchgate

Submitted PDF Full Texts will always be free for everyone
(We only charge for PDFs that we need to acquire)

Select a PDF file:
Close
Close

Related references

Kerber, R.E.; Klein, S.; Kouba, C.; Aronson, A., 1984: Evaluation of a new defibrillation pathway: tongue-epigastric/tongue-apex route. II. Impedance characteristics in human subjects. An automated device for defibrillation using a vertical shock pathway (tongue-epigastric or tongue-apex) has been developed. The energy requirements for defibrillation using vertical pathways are uncertain and will be determined largely by the imp...

Kerber R.; Aronson A.; Kieso R.; Melton J., 1983: Experimental evaluation of a new de fibrillation pathway the tongue epigastric route. Journal of the American College of Cardiology 1(2 PART 2): 609

Kerber, R.E.; Hoyt, R.; Aronson, A.; Kieso, R.; Melton, J., 1983: Evaluation of a new de fibrillation pathway the tongue epigastric route 1. experimental studies in dogs. To determine the efficacy of a tongue-epigastric defrillation route in anesthetized dogs, ventricular fibrillation was induced by rectangular pulses passed down a transvenous catheter into the right ventricle. Three groups of dogs were studied. Gr...

Kerber, R.E.; Hoyt, R.; Aronson, A.; Kieso, R.; Melton, J., 1983: Evaluation of a new defibrillation pathway--the tongue-epigastric route. I. Experimental studies in dogs. The purpose of this study was to determine the efficacy of a tongue-epigastric defibrillation route in anesthetized dogs. Ventricular fibrillation was induced by rectangular pulses passed down a transvenous catheter into the right ventricle. Three...

Kerber R.; Klein S.; Kouba C.; Aronson A., 1983: Use of the tongue as a site for de fibrillation impedance characteristics of vertical shock pathways in humans. American Heart Association Monograph (101): III-13

Ishijima, S., 1985: Development of a measurement method for tongue movement using a magnetic device and its use in the study of articulation characteristics. 2. The tongue movements in dentate subjects and complete denture wearers. Hiroshima Daigaku Shigaku Zasshi. Journal of Hiroshima University Dental Society 17(1): 128-137

Nakaguchi, T.; Takeda, K.; Ishikawa, Y.; Oji, T.; Yamamoto, S.; Tsumura, N.; Ueda, K.; Nagamine, K.; Namiki, T.; Miyake, Y., 2015: Proposal for a new noncontact method for measuring tongue moisture to assist in tongue diagnosis and development of the tongue image analyzing system, which can separately record the gloss components of the tongue. Tongue diagnosis is a noninvasive diagnosis and is traditionally one of the most important tools for physicians who practice Kampo (traditional Japanese) medicine. However, it is a subjective process, and its results can depend on the experience o...

Eslamian, L.; Leilazpour, A.Peyman., 2006: Tongue to palate contact during speech in subjects with and without a tongue thrust. The aims of this study were to determine the location and movements of the tongue on the palate during pronunciation of Persian consonants and selected words in subjects with and without a tongue thrust (TT). Ten patients with a TT and 10 control...

Rahamimoff, P.; Muhsam, H.V., 1957: Some observations on 1246 cases of geographic tongue: the association between geographic tongue, seborrheic dermatitis, and spasmodic bronchitis; transition of geographic tongue to fissured tongue. A.M.A. Journal of Diseases of Children 93(5): 519-525

Tanaka, T.Hideaki., 2015: Tongue diagnosis: relationship between sublingual tongue morphology in three tongue protrusion angles and menstrual clinical symptoms. The morphological and color characteristics of the tongue sublingual veins (SLVs) can manifest differently within the subjects, depending on the way their tongue is curled upward. This study was conducted in order to investigate the clinical relev...