Microembolic Signals Under Increased Ambient Pressure
نویسندگان
چکیده
منابع مشابه
Breathing under high ambient pressure.
LORD, GEORGE P., GEORGE F. BOND, AND KARL E. SCHAEFER. Breathing under high ambient pressure. J. Appl. Physiol. 21 (6): 1833-1838. 1966.—The acute effect of high ambient pressure on expiratory airflow was studied in healthy adult males in the ambient pressure range from 1.0 to 7.0 atmospheres absolute pressure (Ata) using a hyperbaric chamber. Changes in flow were assessed with the maximum expi...
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Two experienced commercial divers were administered an addition, a letter-cancellation and a form perception test before, at selected intervals, during, and after a simulated helium-oxygen dive to a saturation depth of 600 feet with excursions to 800 and 900 feet (total dive time 143 hours). Apart from vague joint and muscle sensations reported by means of a subjective checklist, the slow desce...
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Two experienced, commercial divers were administered a simple addition test, a letter cancellation test, a geometric forms test and a choice reaction-time test (RATER) at selected intervals before, during and after a simulated, helium-oxygen dive in a pressure chamber complex to a saturated depth of 800 feet equivalent with excursion dives to 1000, 1050 and 1100 feet. The compression rate was 3...
متن کامل"Tail sign" associated with microembolic signals.
BACKGROUND AND PURPOSE Transcranial Doppler ultrasound (TCD) can detect circulating microembolic signals (MES). We focused our attention on tail signs (TS), a signal associated with MES that appeared as a small reversal signal after MES on the high time resolution spectral display. We examined MES and artifacts in an animal study to determine whether TS were specific changes associated with MES...
متن کاملAccidental microembolic signals: prevalence and clinical relevance
Background: The purpose of this study was to examine the occurrence of accidental microembolic signals (MES) and its clinical relevance in patients receiving routine transcranial Doppler (TCD) examinations. Methods: We retrospectively reviewed our institutional TCD database (from January 2007–November 2012). The arteries with positive MES, the presumed sources of emboli and the clinical backgro...
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ژورنال
عنوان ژورنال: Stroke
سال: 1998
ISSN: 0039-2499,1524-4628
DOI: 10.1161/01.str.29.5.1069