gms | German Medical Science

77. Jahresversammlung der Deutschen Gesellschaft für Hals-Nasen-Ohren-Heilkunde, Kopf- und Hals-Chirurgie e. V.

Deutsche Gesellschaft für Hals-Nasen-Ohren-Heilkunde, Kopf- und Hals-Chirurgie e. V.

24.05. - 28.05.2006, Mannheim

The minimal ice water caloric test in comparison to the established vestibular caloric test procedures

Meeting Abstract

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German Society of Otorhinolaryngology, Head and Neck Surgery. 77th Annual Meeting of the German Society of Otorhinolaryngology, Head and Neck Surgery. Mannheim, 24.-28.05.2006. Düsseldorf, Köln: German Medical Science; 2006. Doc06hno114

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Veröffentlicht: 7. September 2006

© 2006 Schmäl et al.
Dieser Artikel ist ein Open Access-Artikel und steht unter den Creative Commons Lizenzbedingungen (http://creativecommons.org/licenses/by-nc-nd/3.0/deed.de). Er darf vervielf&aauml;ltigt, verbreitet und &oauml;ffentlich zug&aauml;nglich gemacht werden, vorausgesetzt dass Autor und Quelle genannt werden.


Gliederung

Text

Caloric testing of the vestibular labyrinth is usually performed by the classic caloric test procedures (CCTP) with water of 30 and 44 °C. Ice water irrigation (4°C) is mostly rejected, although it might be useful as a bedside test. To verify the validity of the Minimal Ice Water Caloric Test (MIWCT), video-oculographic comparative investigations were performed in 22 healthy subjects with ice water (0.5 ml, 1.0 ml, 2 ml), CCTP, and cold air (27°C). “Frequency”, “amplitude”, “slow phase velocity” (SPV), “nystagmusonset” and “-duration” were documented. After addition of three ice cubes, the temperature of conventional tap water (16°C) decreased within 13 min to 4°C. In “pessimum position”, no nystagmus response was observed during “MIWCT”. In comparison to “CCTP”, the “MIWCT” led to a significant later nystagmus onset and a significant prolongation of the nystagmus reaction. In contrast to “air stimulation (27°C)”, the “MIWCT (1 and 2 ml)” showed a significant Spearman’s correlation for all three essential nystagmus parameters (frequency, amplitude and SPV) with the established “CCTP”, which are considered to be the gold standard. Thus, the “MIWCT (1 ml and 2 ml)” in healthy adults suggests that this procedure is suitable as a bedside examination for investigation of vestibular function outside the vestibular laboratory, e.g. on a hospital ward during examination by a consultant, where vestibular testing of bed rest patients with vertigo is sometimes necessary.