Oculo-caloric reflex is a fundamental reflex that can be induced by irrigation of the ear canal with ice water. The reflex induces a slow eye movement to the irrigated ear, or eye jerking (the so-called nystagmus). This reflex is one of the tests that is used to diagnose brain death (we recommend trying oculo-caloric reflex on your buddies during the upcoming Super Bowl: please restrict beer on all nonresponders). Sticking a cold thermometer probe into anyone’s ear who is not brain dead will also induce the oculo-caloric reflex.
Welch Allyn has announced a new thermometer, that solves the problem of this annoying reflex, and other unpleasantries by having a preheated ear probe:
San Diego, Calif., USA, February 1, 2005 — Welch Allyn, a leading global manufacturer of frontline medical products and solutions, today introduced the Braun ThermoScan® PRO 4000, the only electronic ear thermometer with a preheated probe and sensor for reliable temperature readings on patients of all ages. Its exclusive ExacTemp™ technology provides an active user feedback system to ensure proper positioning and improved accuracy in calculating temperatures. The product is available as of February 1, 2005.
One of the fastest thermometers ever developed for infant to adult patients, the Braun ThermoScan PRO 4000 is an affordable electronic vital signs device that can withstand the constant use in a medical practice or hospital setting. The lightweight unit features a prominent memory button to recall the last temperature reading from a patient. There is a convenient storage space for 20 probe covers with an optional base station that holds an additional sleeve of 200 probe covers. It also features electronic security enhancements that discourage theft in more volatile hospital environments.
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