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Archives of Anesthesiology and Critical Care، جلد ۷، شماره ۴، صفحات ۲۰۳-۲۰۴
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عنوان انگلیسی Consensus Report: The Current Status of Airway Assessment
چکیده انگلیسی مقاله It is widely reckoned that the human airway is an inhospitable terrain, and without a proper airway assessment, embarking on induction of anesthesia becomes a deadly vendetta. Difficult laryngoscopy, intubation and mask ventilation following induction continue to harass the anesthesiologists worldwide, and are unequivocally regarded as the major causes of anesthetic related morbidity and mortality. The incidence cited in the books is only the tip of the ice-burg as many cases are not reported and many countries do not have a reliable database and databank or else are wary of issuing the correct figures. The existing bedside airway assessment tests such as Patel's measurement of the thyromental distance [1], the Mallampati test [2], and the Wilson scoring system [3] have all been shown in various studies to have high false positive rates, which obviously commutes from their clinical utility. In addition, other such tests, modifications and scoring systems have been evolved and evaluated in different randomized clinical trials to help us in providing a solution to the ever present risk of encountering a difficult airway and managing it successfully, but it seems that a logical and a practical panacea is a distant and perhaps a fond hope. A test that could help us to overcome the conundrum of the airway difficulties is the need of the hour, but at present no single test is available or in the offing to guarantee us a relatively greater success in assessing the airway with greater accuracy. The upper lip bite test introduced recently as a simple new technique by khan et al [4] assesses a combination of jaw subluxation and the presence of buck teeth simultaneously obviously enhancing its predictive value and reliability. Exposure of the glottis predominantly depends on forward protrusion of the mandible which requires adequate and proper physiological functioning of the temporomandibular joint. The upper lip bite test adequately addresses this issue as well thus providing sufficient authenticity to the test when used alone as an airway screening test. Multivariate composite risk indexes [5-6] appear to be promising but results so far published have not been convincing to achieve tentative data in terms of high sensitivity, specificity and minimal false positive and false negative outcomes. In search for further credibility and reliability, the anesthesiologists recently have veered from simple airway assessment tests to more sophisticated means employing magnetic resonance imaging, computed tomographic scanning and sonographic techniques in the hope of getting a true picture of the airway. But such tests not only entail time but are cost effective and thus detract from their usefulness. Although fiberscope is a distinct improvement in airway management, it is not a garden hose you can tum on and off, and furthermore does not give you the guarantee that nothing will go wrong. I personally would err on the side of boldness, not on the side of caution in most matters of life, but while assessing the airway I would observe all the precautions and go ahead gingerly since to me airway is the darkest Africa with much of it unknown and untouched hitherto.
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نویسندگان مقاله | Zahid Khan
Department of Anesthesiology and Intensive Care, Imam Khomeini Hospital Complex, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran.
نشانی اینترنتی https://aacc.tums.ac.ir/index.php/aacc/article/view/416
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