Richard von Foregger, Ph.D., 1872–1960

Background: The most commonly used devices for direct visualization of the larynx and tracheal intubation are Macintosh and McCoy laryngoscopes. C-MAC video laryngoscope, based on the principles of indirect laryngoscopy, has been introduced into clinical practice in recent years. Video laryngoscope may be useful in difficult tracheal intubation situations. Aim: We aimed at comparing the McCoy and C-MAC video laryngoscope with conventional Macintosh laryngoscope for hemodynamic responses of orotracheal intubation among adults receiving general anesthesia for elective surgeries. Settings and Design: This was a hospital-based randomized, double-blind, comparison, done between June 2015 and October 2016 after permission of institutional ethical committee. Materials and Methods: One hundred and fifty patients with normal airways undergoing elective general anesthesia were randomly allocated to undergo intubation using either Macintosh (Group A), McCoy (Group B), or C-MAC video laryngoscope (Group C). Hemodynamic changes associated with intubation were recorded immediately before and after laryngoscopy and intubation, every minute for 5 min and at 10 min after intubation by an independent observer. The time taken to perform endotracheal intubation and Cormack and Lehane score were also noted in all three groups. Statistical Analysis: Data were compiled, and statistical analysis was performed using SPSS 17.0 version. Results: Hemodynamic response after intubation was least in Group B (McCoy) as compared to Group A (Macintosh) and Group C (C-Mac) ( P = 0.001). Ninety-two percentage patients were in Cormack and Lehane score Class I in Group C in comparison to 52% in Group A and 48% in Group B ( P = 0.000). Time for intubation taken in Group A, Group B, and Group C was 15.53 ± 1.53 min, 18.65 ± 0.44 min, and 22.82 ± 1.323 min, respectively ( P = 0.000). Conclusion: The McCoy laryngoscope provided better attenuation of hemodynamic responses to laryngoscopy and intubation than the Macintosh and C-Mac video laryngoscope whereas more appearance of Cormack and Lehane score Class I was seen with the C-MAC video laryngoscope. Furthermore, the time taken to perform endotracheal intubation was the longest with the C-MAC video laryngoscope.

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“…Similar to our study, previous authors also observed longer intubation time with video laryngoscope compared to MCL. [417]…”

Section: Discussionmentioning

confidence: 99%

“…The Macintosh laryngoscope (MCL) has been the “gold standard” device for direct laryngoscopy and tracheal intubation since its invention by Foregger and Foregger in 1940s. [4] The McCoy's or Corazelli, London, McCoy laryngoscope is also used for direct laryngoscopy and tracheal intubation.…”

Section: Introductionmentioning

confidence: 99%

Hemodynamic Response to Orotracheal Intubation: Comparison between Macintosh, McCoy, and C-MAC Video Laryngoscope

et al. 2019

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“…The Macintosh laryngoscope (MCL) has been the ‘gold standard’ device for direct laryngoscopy and tracheal intubation since its invention by Foregger in the 1940s (10). A relatively high forward and upward force is applied on the MCL handle to visualize glottis through aligning oral, pharyngeal and laryngeal axes.…”

Section: Introductionmentioning

confidence: 99%

Comparing GlideScope Video Laryngoscope and Macintosh Laryngoscope Regarding Hemodynamic Responses during Orotracheal Intubation: A Randomized Controlled Trial

Pournajafian¹,

Ghodraty²,

Faiz³

et al. 2014

Iran Red Crescent Med J

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Background:To determine if the GlideScope® videolaryngoscope (GVL) could attenuate the hemodynamic responses to orotracheal intubation compared with conventional Macintosh laryngoscope.Objectives:The aim of this relatively large randomized trial was to compare the hemodynamic stress responses during laryngoscopy and tracheal intubation using GVL versus MCL amongst healthy adult individuals receiving general anesthesia for elective surgeries.Patients and Methods:Ninety five healthy adult patients with American Society of Anesthesiologists physical status class I or II that were scheduled for elective surgery under general anesthesia were randomly allocated to either Macintosh or GlideScope arms. All patients received a standardized protocol of general anesthesia. Hemodynamic changes associated with intubation were recorded before and at 1, 3 and 5 minutes after the intubation. The time taken to perform endotracheal intubation was also noted in both groups.Results:Immediately before laryngoscopy (pre-laryngoscopy), the values of all hemodynamic variables did not differ significantly between the two groups (All P values > 0.05). Blood pressures and HR values changed significantly over time within the groups. Time to intubation was significantly longer in the GlideScope (15.9 ± 6.7 seconds) than in the Macintosh group (7.8 ± 3.7 sec) (P< 0.001). However, there were no significant differences between the two groups in hemodynamic responses at all time points.Conclusions:The longer intubation time using GVL suggests that the benefit of GVL could become apparent if the time taken for orotracheal intubation could be decreased in GlideScope group.

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“…On 7 June, 15th AF reported 1146 heavy bombers on hand, compared with 8th AF's 2786. Of 15th's total force, 63 AF averaged 1204 bombers on hand each day. Of these, an average of 914, 76 per cent, were reported as ready for duty.27 Compared to 8th AF during the same period, 15th AF averaged fewer than half as many bombers on hand, but their operational rate was 12 per cent higher.…”

Section: Fifteenth Air Force: Capabilities and Missionsmentioning

confidence: 99%

Bombing Auschwitz: US 15th Air Force and the Military Aspects of a Possible Attack

Rice

1999

War in History

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Richard von Foregger, Ph.D., 1872–1960

Cited by 23 publications

References 18 publications

Hemodynamic Response to Orotracheal Intubation: Comparison between Macintosh, McCoy, and C-MAC Video Laryngoscope

Hemodynamic Response to Orotracheal Intubation: Comparison between Macintosh, McCoy, and C-MAC Video Laryngoscope

Comparing GlideScope Video Laryngoscope and Macintosh Laryngoscope Regarding Hemodynamic Responses during Orotracheal Intubation: A Randomized Controlled Trial

Bombing Auschwitz: US 15th Air Force and the Military Aspects of a Possible Attack

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