Abstract:
UNLABELLED:We examined the reliability of an airway evaluation test to assess the occipitoatlantoaxial (OAA) extension capacity described by Bellhouse et al. (Bellhouse test) in 20 adult volunteers with normal cervical spines. Each subject sat upright with the head in the neutral position and was then asked to extend the head maximally while attempting to move the neck as little as possible. The angle from the neutral position to the extreme extension was measured using the goggle-goniometer. Lateral cervical radiographs were taken in these positions, and the OAA extension angle was radiographically measured. Median values for OAA extension measured radiographically and extension of the head measured with the Bellhouse test were 21.5 degrees and 30 degrees, respectively. Extension of 9.5 degrees occurred at the subaxial regions, which could not be detected by inspecting surface contours of the neck. The extent of the subaxial extension was almost consistent with the degree of overestimation of the OAA extension capacity by the Bellhouse test. Because the subaxial extension occurred independent of the degree of the OAA extension, a strong relationship between the angle measured with the goggle-goniometer and the OAA extension angle measured radiographically was not established (P < 0.01, r(2) = 0.44). These findings mean that the test is not always accurate to evaluate the OAA extension capacity and will fail to detect a reduction of the OAA extension capacity if the subaxial regions are normal. Therefore, these problems derived from the Bellhouse test offer a potential for missing a prediction of difficult tracheal intubations because reduced OAA extension is one of the important factors that make intubation difficult. IMPLICATIONS:The Bellhouse test was not always accurate to evaluate the actual occipitoatlantoaxial extension capacity because of the inevitable occurrence of the subaxial extension. This may mean that some difficult endotracheal intubations will be unpredictable.
journal_name
Anesth Analgjournal_title
Anesthesia and analgesiaauthors
Urakami Y,Takenaka I,Nakamura M,Fukuyama H,Aoyama K,Kadoya Tdoi
10.1097/00000539-200211000-00062subject
Has Abstractpub_date
2002-11-01 00:00:00pages
1437-41, table of contentsissue
5eissn
0003-2999issn
1526-7598journal_volume
95pub_type
临床试验,杂志文章abstract::Outpatients undergoing minor diagnostic and therapeutic procedures associated with intermittent discomfort are frequently given bolus injections of intravenous opioid analgesics. In a group of 80 healthy women undergoing vaginal ovum pickup procedures, we evaluated patient-controlled administration of alfentanil using...
journal_title:Anesthesia and analgesia
pub_type: 临床试验,杂志文章
doi:10.1213/00000539-199207000-00008
更新日期:1992-07-01 00:00:00
abstract::The effects of volatile anesthetics on arterial mechanical properties in vivo are incompletely understood. The present investigation tested the hypothesis that isoflurane and halothane cause differential actions on the mechanical characteristics of the aorta in barbiturate-anesthetized dogs instrumented for measuremen...
journal_title:Anesthesia and analgesia
pub_type: 杂志文章
doi:10.1097/00000539-199612000-00006
更新日期:1996-12-01 00:00:00
abstract:BACKGROUND:Previous studies have shown that local anesthetics may induce apoptosis in some cell types. In this study, we investigated the apoptotic effects of local anesthetics in human breast tumor cells. METHODS:Human breast cancer (MCF-7) and mammary epithelial (MCF-10A) cell lines were treated with lidocaine and/o...
journal_title:Anesthesia and analgesia
pub_type: 杂志文章
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abstract:BACKGROUND:Research information for children is often presented in a manner that is difficult to understand. We designed this study, therefore, to examine the effect of improved readability and processability of written study information on children's understanding. METHODS:One-hundred-ninety children aged 7-17 yr who...
journal_title:Anesthesia and analgesia
pub_type: 杂志文章,随机对照试验
doi:10.1213/01.ane.0000270326.44507.11
更新日期:2007-08-01 00:00:00
abstract::Sodium nitroprusside-induced cyanide intoxication has been demonstrated in the laboratory animal and has been experienced clinically during induced hypotensive anesthesia. This is a care report of a successful resuscitation of a severe cardiovascular collapse secondary to suspected sodium nitroprusside-induced cyanide...
journal_title:Anesthesia and analgesia
pub_type: 杂志文章
doi:10.1213/00000539-197707000-00015
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journal_title:Anesthesia and analgesia
pub_type: 杂志文章
doi:10.1213/00000539-199309000-00013
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journal_title:Anesthesia and analgesia
pub_type: 杂志文章
doi:10.1097/00000539-199812000-00040
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abstract::The purpose of this study was to examine the effects of dexmedetomidine, an alpha 2-adrenergic agonist, on cerebral blood flow and metabolic rate in dogs anesthetized with 0.64% isoflurane. After intubation and institution of mechanical ventilation, arterial, venous, pulmonary artery, and sagittal sinus catheters were...
journal_title:Anesthesia and analgesia
pub_type: 杂志文章
doi:10.1213/00000539-199006000-00008
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journal_title:Anesthesia and analgesia
pub_type: 杂志文章
doi:10.1097/00000539-199801000-00030
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journal_title:Anesthesia and analgesia
pub_type: 临床试验,杂志文章,多中心研究
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journal_title:Anesthesia and analgesia
pub_type: 杂志文章
doi:
更新日期:1985-07-01 00:00:00
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journal_title:Anesthesia and analgesia
pub_type: 临床试验,杂志文章,随机对照试验
doi:
更新日期:1987-02-01 00:00:00
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journal_title:Anesthesia and analgesia
pub_type: 杂志文章
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pub_type: 杂志文章,评审
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journal_title:Anesthesia and analgesia
pub_type: 杂志文章
doi:10.1213/00000539-197807000-00016
更新日期:1978-07-01 00:00:00
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journal_title:Anesthesia and analgesia
pub_type: 杂志文章
doi:10.1213/00000539-197803000-00012
更新日期:1978-03-01 00:00:00
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pub_type: 杂志文章
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journal_title:Anesthesia and analgesia
pub_type: 杂志文章
doi:
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journal_title:Anesthesia and analgesia
pub_type: 杂志文章
doi:10.1213/ane.0b013e31818af8f3
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journal_title:Anesthesia and analgesia
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journal_title:Anesthesia and analgesia
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journal_title:Anesthesia and analgesia
pub_type: 临床试验,杂志文章,随机对照试验
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更新日期:1996-03-01 00:00:00
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journal_title:Anesthesia and analgesia
pub_type: 杂志文章
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更新日期:2003-09-01 00:00:00
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journal_title:Anesthesia and analgesia
pub_type: 杂志文章
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更新日期:2007-10-01 00:00:00
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journal_title:Anesthesia and analgesia
pub_type: 临床试验,杂志文章,随机对照试验
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更新日期:2000-01-01 00:00:00
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journal_title:Anesthesia and analgesia
pub_type: 临床试验,杂志文章,随机对照试验
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journal_title:Anesthesia and analgesia
pub_type: 杂志文章
doi:10.1097/00000539-200211000-00032
更新日期:2002-11-01 00:00:00
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journal_title:Anesthesia and analgesia
pub_type: 杂志文章,meta分析,评审
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更新日期:2016-10-01 00:00:00
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journal_title:Anesthesia and analgesia
pub_type: 杂志文章
doi:10.1213/00000539-199112000-00018
更新日期:1991-12-01 00:00:00
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journal_title:Anesthesia and analgesia
pub_type: 杂志文章
doi:10.1213/00000539-199410000-00016
更新日期:1994-10-01 00:00:00