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Non-channelled video laryngoscopy versus direct laryngoscopy for improving hemodynamics and intubation time in ASA 1 and 2 patients, a double blinded randomized controlled trial
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Non-channelled video laryngoscopy versus direct laryngoscopy for improving hemodynamics and intubation time in ASA 1 and 2 patients, a double blinded randomized controlled trial
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Non-channelled video laryngoscopy versus direct laryngoscopy for improving hemodynamics and intubation time in ASA 1 and 2 patients, a double blinded randomized controlled trial
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Journal Article
Non-channelled video laryngoscopy versus direct laryngoscopy for improving hemodynamics and intubation time in ASA 1 and 2 patients, a double blinded randomized controlled trial
2025
Overview
In 2022, the American Society of Anaesthesiologists (ASA) included indirect video laryngoscopy in their difficult airway algorithm to aid in difficult intubation. To determine the potential advantages of routinely using video laryngoscopy (VL) in nonchallenging cases, we conducted a study to examine its effects on hemodynamics, intubation time and fasting blood sugar (FBS) in comparison with direct laryngoscopy (DL).
This was a double blinded, prospective, randomized, controlled trial in a university hospital included ASA I to II patients undergoing elective surgery. Patients were randomly assigned to either DL or VL with an endotracheal tube preshaped to the blade through a stylet. The primary outcome was the difference in the mean blood pressure (MBP) post intubation. Secondary outcomes included intubation time, Cormack–Lehane grade, FBS levels and other hemodynamic differences. The study was registered at (pactr.samrc.ac.za), number PACTR202305589924304.
80 patients were enrolled and intubated with either DL (n = 40) or VL (n = 40), MBP, HR, DBP, intubation time and Cormack–Lehane grade were significantly better with indirect video laryngoscopy with pre-shaped stylet than with direct laryngoscopy, with mean values of 78.83 vs 90.50 mmhg, 84.78 vs 92.13, 78.83 vs 90.50 mmhg, 15.63 vs 17.28 s respectively, but the effects of direct laryngoscopy on FBS, SBP, and saturation were not significantly different.
Indirect video laryngoscopy is superior to direct laryngoscopy regarding patient's hemodynamics specially the MBP, intubation time with no significant difference regarding FBS.
•Stylet use cuts intubation time & hemodynamic stress with video laryngoscope.•Preshaped stylet shortens intubation and reduces stress responses.•Faster, smoother intubation with stylet-matched video laryngoscope.•Improved hemodynamics using preshaped stylet in video laryngoscopy.•Less stress, faster intubation with blade-matched stylet technique.
