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Influence of GlideScope assisted endotracheal intubation on intraocular pressure in ophthalmic patients.

Ahmad N, Zahoor A, Riad W, Al Motowa S - Saudi J Anaesth (2015 Apr-Jun)

Bottom Line: GlideScope is a video laryngoscope that functions independent of the line of sight, reduces upward lifting forces for glottic exposure and requires less cervical neck movement for intubation, making it less stimulating than Macintosh laryngoscopy.IOP was not significantly different between groups before and after anesthetic induction and 5 min after tracheal intubation (P = 0.217, 0.726, and 0.110 respectively).No significant difference noted between groups in mean arterial pressure (P = 0.899, 0.62, 0.47, 0.82 respectively) and heart rate (P = 0.21, 0.72, 0.07, 0.29, respectively) at all measurements.

View Article: PubMed Central - PubMed

Affiliation: Department of Anesthesia, King Khaled Eye Specialist Hospital, Riyadh, Saudi Arabia.

ABSTRACT

Background: Traditional Macintoch laryngoscopy is known to cause a rise in intraocular pressure (IOP), tachycardia and hypertension. These changes are not desirable in patients with glaucoma and open globe injury. GlideScope is a video laryngoscope that functions independent of the line of sight, reduces upward lifting forces for glottic exposure and requires less cervical neck movement for intubation, making it less stimulating than Macintosh laryngoscopy.

Aim: The aim was to assess the variations in IOP and hemodynamic changes after GlideScope assisted intubation.

Materials and methods: After approval of the local Institutional Research and Ethical Board and informed patient consent, 50 adult American Society of Anesthesiologist I and II patients with normal IOP were enrolled in a prospective, randomized study for ophthalmic surgery requiring tracheal intubation. In all patients, trachea was intubated using either GlideScope or Macintoch laryngoscope. IOP of nonoperated eye, heart rate and blood pressure were measured as baseline, 1 min after induction, 1 min and 5 min after tracheal intubation.

Results: IOP was not significantly different between groups before and after anesthetic induction and 5 min after tracheal intubation (P = 0.217, 0.726, and 0.110 respectively). The only significant difference in IOP was at 1 min after intubation (P = 0.041). No significant difference noted between groups in mean arterial pressure (P = 0.899, 0.62, 0.47, 0.82 respectively) and heart rate (P = 0.21, 0.72, 0.07, 0.29, respectively) at all measurements.

Conclusion: GlideScope assisted tracheal intubation shown lesser rise in IOP at 1 min after intubation in comparison to Macintoch laryngoscope, suggesting that GlideScope may be preferable to Macintosh laryngoscope.

No MeSH data available.


Related in: MedlinePlus

Intraocular pressure in nonoperated eye after GlideScope assisted endotracheal intubation versus conventional method
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Figure 1: Intraocular pressure in nonoperated eye after GlideScope assisted endotracheal intubation versus conventional method

Mentions: Demographic and clinical data were similar for age, sex, weight, height, Mallampati/ASA classifications and duration of surgery among both groups. All tracheal intubations were successful at first attempt. GlideScope, generally provided a laryngoscopic view equal or better than that of direct laryngoscopy. IOP was not significantly different between groups before and after induction and 5 min after tracheal intubation (P = 0.217, 0.726, 0.110 respectively). The only significant difference was lesser rise in IOP at 1 min after intubation (P = 0.041) in GlideScope group in comparison with Macintosh group. No significant difference was found between the groups in MAP (P = 0.899, 0.62, 0.47, 0.82 respectively) and in the heart rate (P = 0.21, 0.72, 0.07, 0.29 respectively) at all measurements. Duration of intubation was slightly longer in group 1 in comparison to group 2 (20.12 ± 8.05 and 16.12 ± 5.67 s respectively), but was not significant statistically (P = 0.079) [Table 1 and Figures 1–3].


Influence of GlideScope assisted endotracheal intubation on intraocular pressure in ophthalmic patients.

Ahmad N, Zahoor A, Riad W, Al Motowa S - Saudi J Anaesth (2015 Apr-Jun)

Intraocular pressure in nonoperated eye after GlideScope assisted endotracheal intubation versus conventional method
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4374227&req=5

Figure 1: Intraocular pressure in nonoperated eye after GlideScope assisted endotracheal intubation versus conventional method
Mentions: Demographic and clinical data were similar for age, sex, weight, height, Mallampati/ASA classifications and duration of surgery among both groups. All tracheal intubations were successful at first attempt. GlideScope, generally provided a laryngoscopic view equal or better than that of direct laryngoscopy. IOP was not significantly different between groups before and after induction and 5 min after tracheal intubation (P = 0.217, 0.726, 0.110 respectively). The only significant difference was lesser rise in IOP at 1 min after intubation (P = 0.041) in GlideScope group in comparison with Macintosh group. No significant difference was found between the groups in MAP (P = 0.899, 0.62, 0.47, 0.82 respectively) and in the heart rate (P = 0.21, 0.72, 0.07, 0.29 respectively) at all measurements. Duration of intubation was slightly longer in group 1 in comparison to group 2 (20.12 ± 8.05 and 16.12 ± 5.67 s respectively), but was not significant statistically (P = 0.079) [Table 1 and Figures 1–3].

Bottom Line: GlideScope is a video laryngoscope that functions independent of the line of sight, reduces upward lifting forces for glottic exposure and requires less cervical neck movement for intubation, making it less stimulating than Macintosh laryngoscopy.IOP was not significantly different between groups before and after anesthetic induction and 5 min after tracheal intubation (P = 0.217, 0.726, and 0.110 respectively).No significant difference noted between groups in mean arterial pressure (P = 0.899, 0.62, 0.47, 0.82 respectively) and heart rate (P = 0.21, 0.72, 0.07, 0.29, respectively) at all measurements.

View Article: PubMed Central - PubMed

Affiliation: Department of Anesthesia, King Khaled Eye Specialist Hospital, Riyadh, Saudi Arabia.

ABSTRACT

Background: Traditional Macintoch laryngoscopy is known to cause a rise in intraocular pressure (IOP), tachycardia and hypertension. These changes are not desirable in patients with glaucoma and open globe injury. GlideScope is a video laryngoscope that functions independent of the line of sight, reduces upward lifting forces for glottic exposure and requires less cervical neck movement for intubation, making it less stimulating than Macintosh laryngoscopy.

Aim: The aim was to assess the variations in IOP and hemodynamic changes after GlideScope assisted intubation.

Materials and methods: After approval of the local Institutional Research and Ethical Board and informed patient consent, 50 adult American Society of Anesthesiologist I and II patients with normal IOP were enrolled in a prospective, randomized study for ophthalmic surgery requiring tracheal intubation. In all patients, trachea was intubated using either GlideScope or Macintoch laryngoscope. IOP of nonoperated eye, heart rate and blood pressure were measured as baseline, 1 min after induction, 1 min and 5 min after tracheal intubation.

Results: IOP was not significantly different between groups before and after anesthetic induction and 5 min after tracheal intubation (P = 0.217, 0.726, and 0.110 respectively). The only significant difference in IOP was at 1 min after intubation (P = 0.041). No significant difference noted between groups in mean arterial pressure (P = 0.899, 0.62, 0.47, 0.82 respectively) and heart rate (P = 0.21, 0.72, 0.07, 0.29, respectively) at all measurements.

Conclusion: GlideScope assisted tracheal intubation shown lesser rise in IOP at 1 min after intubation in comparison to Macintoch laryngoscope, suggesting that GlideScope may be preferable to Macintosh laryngoscope.

No MeSH data available.


Related in: MedlinePlus