Intubation Conditions Achieved With Rapid Co-administration of Rocuronium and Propofol Versus Classical Induction

Intubation Conditions Achieved With Rapid Co-administration of Rocuronium and Propofol Versus Classical Induction

Intubation Conditions Achieved With Rapid Co-administration of Rocuronium and Propofol Versus Classical Induction: A Prospective Randomized and Blind Trial

The purpose of this study is to assess and compare the conditions for tracheal intubation obtained with Modified Time Principle Induction (MTPI) and that obtained with classic induction (CI). This study will compare the efficiency of tracheal intubation with the two induction techniques, as well as evaluate for potential adverse events.

Patients from both study groups will receive premedication in the usual fashion, typically 0-2 mg of IV midazolam at the discretion of the care team. Patients in both study groups will receive 1 mg/kg of lidocaine intravenously, followed by an opioid such as fentanyl (1-2 mcg/kg), prior to administration of induction drugs. Patients assigned to MTPI will then be given rocuronium (0.6mg/kg), followed by propofol intravenously as a single bolus within 10 seconds. A typical propofol bolus for induction ranges from 1-2mg/kg, depending on the patient's age, medical history, and co-morbidities. Propofol dosing will be at the discretion of the care team. Patients will count down from one hundred. Once apnea occurs, as indicated by a lack of respiratory effort, the eyes will be taped, and intubation with C-MAC (Karl Storz 8403ZX, Tuttlingen, Germany) is initiated.

Patients assigned to CI will be induced as per routine care using lidocaine 1 mg/kg, an opioid such a fentanyl (1-2 mcg/kg), propofol 1-2 mg/kg, and rocuronium 0.6 mg/kg, and the intubation will be performed with a C-MAC. Patients will also count down from one hundred. The medications used for induction of anesthesia in both arms of the study are those used for routine anesthesia care. In both study arms, dosing of medications for induction of anesthesia is standardized (lidocaine 1 mg/kg, fentanyl 1-2 mcg/kg, propofol 1-2 mg/kg, and rocuronium 0.6 mg/kg). The only difference between the two arms will be the timing of the medication administration, and the order in which medications are administered. The documentation of induction and intubation will be the same as that of the MTPI group. Vital signs and other parameters will continuously be recorded in the intraoperative record. Emergence and extubation are not protocolized.

The total time between laryngoscope insertion into mouth and the onset of ventilation after tracheal intubation

Airway view at the time of laryngoscopy as categorized by the modified Cormack-Lehane classification (before external manipulation)

data is reported categorically as follows 1(Full view of glottis),2a(Partial view of glottis), 2b(Only posterior extremity of glottis seen or only arytenoid cartilages), 3(Only epiglottis seen, none of glottis seen) and 4(Neither glottis nor epiglottis seen)

Number of participants who had Awareness of muscle paralysis before loss of consciousness as assessed by the Post Anesthesia Care Unit Survey of Modified Time Principle Induction

Number of participants who had presence of Sore throat as assessed by the score on the Post Anesthesia Care Unit Survey of Modified Time Principle Induction

Number of participants who had nausea and vomiting as assessed by the Post Anesthesia Care Unit Survey of Modified Time Principle Induction

Overall patient satisfaction as assessed by the score on the Post Anesthesia Care Unit Survey of Modified Time Principle Induction

Inclusion Criteria: BMI >30 kg/M2 or Mallampati class III or IV Requiring general anesthesia and endotracheal intubation Exclusion Criteria: Acute and chronic respiratory disorders, including Chronic obstructive pulmonary disease (COPD) and asthma American Society of Anesthesiologists (ASA) physical status classification > III Emergency surgery Induction requiring cricoid pressure Patients requiring awake intubation Pregnant women Patients who require an induction dose of propofol less than 1 mg/kg Untreated ischemic heart disease Contraindication to mask ventilation Allergy to propofol, rocuronium, or Sugammadex