Cardiovascular responses to tracheal intubation with the Airway Scope (Pentax-AWS)

Suzuki, Akihiro; Toyama, Yoshiyuki; Katsumi, Norifumi; Kunisawa, Takayuki; Henderson, John; Iwasaki, Hiroshi

doi:10.1007/s00540-007-0570-6

Cited by 13 publications

(5 citation statements)

References 5 publications

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“…Cardiovascular side effects resulting from laryngoscopy and endotracheal intubation during anesthesia result in sympathoadrenal hyperactivity triggered by mechanical stimulation of the throat and tracheal mucosa [18]. This reaction reaches its peak 30-45 seconds after laryngoscopy and then gradually recedes within 3-5 minutes [3].…”

Section: Discussionmentioning

confidence: 99%

Effects of stellate ganglion block on cardiovascular reaction and heart rate variability in elderly patients during anesthesia induction and endotracheal intubation

Yongquan

Jin

Liu

et al. 2015

Journal of Clinical Anesthesia

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Section: Discussionmentioning

confidence: 99%

Effects of stellate ganglion block on cardiovascular reaction and heart rate variability in elderly patients during anesthesia induction and endotracheal intubation

Yongquan

Jin

Liu

et al. 2015

Journal of Clinical Anesthesia

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“…In studies that reported no difference in hemodynamic changes using either the Macintosh laryngoscope and AWS for endotracheal intubation, one study [6] used fentanyl (2 µg/kg), thiopental (5 mg/kg), succinylcholine (1 mg/kg) in inducing anesthesia while another study [7] used fentanyl (1 µg/kg) and propofol (1.5-2.0 mg/kg) injection and then immediately ventilated with sevoflurane (5 vol%) through a mask. Our study did not use an opioidand further studies are needed to confirm whether the difference in heart rate increase between the two laryngoscopes after intubation is caused by opioid or by characteristics of severe burn patients.…”

Section: Discussionmentioning

confidence: 99%

“…It has been reported that laryngeal findings can be improved during endotracheal intubation when using AWS compared to Macintosh laryngoscope [3-5]. Some studies reported no significant differences in cardiovascular changes during endotracheal intubation [6,7], while another group reported less cardiovascular changes with AWS compared to the Macintosh laryngoscope [8]. …”

Section: Introductionmentioning

confidence: 99%

Macintosh laryngoscope vs. Pentax-AWS video laryngoscope: comparison of efficacy and cardiovascular responses to tracheal intubation in major burn patients

Woo

Kim

Park

et al. 2012

Korean J Anesthesiol

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BackgroundPatients with major burns accompanied with airway edema need more attention for airway management. Although the Pentax-AWS has an advantage in managing endotracheal intubation more easily, its usefulness cannot be assured if it does not maintain hemodynamic stability in burn patients. The aim of this study was to compare cardiovascular responses and general efficacy of the Pentax-AWS and Macintosh laryngoscopes in burn patients.MethodsAmerican Society of Anesthesiologists physical status 2 or 3 adult patients with major burn injury were randomly assigned to group P (AWS, n = 50) or group M (Macintosh, n = 50). Fifty-nine patients assigned to the Macintosh group and no patient to AWS group were excluded because of failure to first intubation. Hemodynamic data at baseline, just before and after intubation as well as 3, 5 and 10 minutes after intubation and grade of sore throat were recorded in two groups. Intubation time, success rate of intubation, number of intubation attempts and the percentage of glottic opening (POGO) scores were also observed and analyzed in all patients.ResultsA statistically significant increase in heart rate just after laryngoscopy was seen in group M. The success rate of the first attempt in group P (100%) was greater than with the group M (46%). POGO scores were higher in group P (97 ± 4%) than in group M (48 ± 29%)ConclusionsThe use of Pentax-AWS offers a reduced degree of heart rate elevation compared with the Macintosh laryngoscope and better intubation environments in major burn patients.

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“…When using the Macintosh laryngoscope, the tips of the laryngoscopic blade are positioned at the vallecula; laryngeal soft tissues and smooth muscles are stretched and pressed upward in the process. Moreover, during Macintosh laryngoscope, the patient's neck is usually extended by the head-tilt and chin-lift maneuver required for straight alignment of the oral, pharyngeal, and laryngeal axis, requiring more force to be applied to the cervical structures [19]. Those factors may contribute to an increase in physiological sympathetic activities and elevation of plasma catecholamine concentrations during induction of general anesthesia.…”

Section: Discussionmentioning

confidence: 99%

The Pentax airway scope versus the Macintosh laryngoscope: Comparison of hemodynamic responses and concentrations of plasma norepinephrine to tracheal intubation

Lee

2013

Korean J Anesthesiol

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BackgroundThe Pentax Airway Scope (AWS) is a video laryngoscope designed to facilitate tracheal intubation with a high-resolution image. The Pentax AWS has been reported to cause less hemodynamic stress than the Macintosh laryngoscope. The aims of this study are to investigate the differences in hemodynamic responses and norepinephrine concentrations to tracheal intubation between procedures using he Pentax AWS and the Macintosh laryngoscope.MethodsForty patients (American Society of Anesthesiologists class I-II, age range: 18-60 years) were randomly assigned to be intubated with either the Pentax AWS or the Macintosh laryngoscope while under general anesthesia. Routine monitoring, including invasive arterial blood pressure and bispectral index, were applied. Thiopental (4 mg/kg), fentanyl (1 µg/kg), midazolam (0.05 mg/kg), and rocuronium (0.6 mg/kg) were administered for anesthetic induction. Systolic, diastolic, and mean blood pressures and heart rates were recorded pre-intubation, immediately post-intubation (T0), and over the following 10 minutes at one minute intervals (T1, T2, T3, T4, T5…T10). Patient blood was sampled for norepinephrine concentrations pre-intubation (baseline) and post-intubation (T1). Evidence of sore throat was evaluated 30 min and 24 hr after extubation. Data were transformed to % basal and expressed as mean ± SD.ResultsThe systolic, diastolic, and mean blood pressure, and heart rate at T0 and T4 were significantly different between the two groups. There was no significant difference in plasma norepinephrine between the two groups. The difference in incidence of sore throat was not significant between the two groups.ConclusionsPentax-AWS for tracheal intubation has greater hemodynamic stability than the Macintosh blade laryngoscope.

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Cardiovascular responses to tracheal intubation with the Airway Scope (Pentax-AWS)

Cited by 13 publications

References 5 publications

Effects of stellate ganglion block on cardiovascular reaction and heart rate variability in elderly patients during anesthesia induction and endotracheal intubation

Effects of stellate ganglion block on cardiovascular reaction and heart rate variability in elderly patients during anesthesia induction and endotracheal intubation

Macintosh laryngoscope vs. Pentax-AWS video laryngoscope: comparison of efficacy and cardiovascular responses to tracheal intubation in major burn patients

The Pentax airway scope versus the Macintosh laryngoscope: Comparison of hemodynamic responses and concentrations of plasma norepinephrine to tracheal intubation

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