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Purpose

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.

Condition

Eligibility

Eligible Ages
Over 18 Years
Eligible Genders
All
Accepts Healthy Volunteers
No

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 - Induction requiring succinylcholine

Study Design

Phase
Phase 4
Study Type
Interventional
Allocation
Randomized
Intervention Model
Parallel Assignment
Primary Purpose
Treatment
Masking
Triple (Care Provider, Investigator, Outcomes Assessor)

Arm Groups

ArmDescriptionAssigned Intervention
Experimental
MTPI group
  • Drug: MTPI
    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.
Active Comparator
Classic Induction group
  • Drug: Classic Induction
    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.

Recruiting Locations

The University of Texas Health Science Center at Houston
Houston, Texas 77030
Contact:
Lauren M Nakazawa, MD, MBA
713-500-6775
Lauren.M.Nakazawa@uth.tmc.edu

More Details

Status
Recruiting
Sponsor
The University of Texas Health Science Center, Houston

Study Contact

Lauren M Nakazawa, MD, MBA
713-500-6775
Lauren.M.Nakazawa@uth.tmc.edu

Notice

Study information shown on this site is derived from ClinicalTrials.gov (a public registry operated by the National Institutes of Health). The listing of studies provided is not certain to be all studies for which you might be eligible. Furthermore, study eligibility requirements can be difficult to understand and may change over time, so it is wise to speak with your medical care provider and individual research study teams when making decisions related to participation.