Clonidine, Colonoscopy, Propofol, Sedation
Conditions
Brief summary
The objective of this study was to compare safety, satisfaction, and efficiency outcomes of propofol versus propofol with clonidine in patients undergoing colonoscopy.
Detailed description
Colonoscopy is one of the most common procedures in the world, Colonoscopy is a procedure often performed for prevention, diagnosis, and treatment of a variety of symptoms and diseases of the lower digestive tract, and sedation or anesthesia should be considered as an important tool to increase its effectiveness. Sedation and analgesia are considered key components, as they reduce anxiety and discomfort and therefore improve the procedure tolerability and patient satisfaction, minimize risk of complications and provide better conditions for the examination. Propofol may be used alone or in combination with opioids and/or benzodiazepines. The use of propofol alone requires higher doses, which may lead to increased incidence of side effects. However, the risks and benefits of adding analgesic and sedative to propofol are controversial, and the selection of drugs is a crucial factor in determining the outcomes. Clonidine apparently produces its sedative and anaesthetic-sparing effects by stimulation of centrally located alpha2 adrenoceptors. Analgesia seems to be mediated mainly by activation of alpha2 adrenoceptors in the dorsal horn of the spinal cord.
Interventions
DRUGPropofol
Continuous propofol infusion will be given with syringe pump for maintenance, with the initial rate set at 25-75 mic/kg/min IV during the first 10-15 min. To avoid administering sedatives at rates greater than clinically necessary, infusion rates will be gradually titrated to 25-50 mic/kg/min and regulated with the clinical response, with an onset of peak drug action expected to occur within 2 min.
DRUGPropofol combined with clonidine
Patients will receive 2 μg/kg of clonidine for injection intravenously 30 min before induction of sedation, administered over 10 min.
Sponsors
Tanta University
Study design
Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
DOUBLE (Subject, Outcomes Assessor)
Eligibility
Sex/Gender
ALL
Age
18 Years to 65 Years
Healthy volunteers
No
Inclusion criteria
* Age 18-65 years. * Both sexes. * American Society of Anesthesiology (ASA) physical status I-II. * Patients undergoing colonoscopy.
Exclusion criteria
* Patients had recent history of colonoscopy. * Previous colonic resection. * Severe heart failure (ejection fraction \< 30%). * Known history of hypersensitivity to propofol or clonidine and any need for anesthetic drug administration other than the study protocol.
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Patient satisfaction | 24 hours postoperatively | Patient's satisfaction level will be assessed with a Likert five-item scoring system (1 = Not at all satisfied, 2 = slightly satisfied, 3 = somewhat satisfied, 4 = very satisfied, and 5 = extremely satisfied). |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Heart rate | Till the end of surgery | Heart rate will be recorded at 30 minutes before induction, at induction, and at the end of surgery. |
| Mean arterial blood pressure | Till the end of surgery | Mean arterial blood pressure will be recorded at 30 minutes before induction, at induction, and at the end of surgery. |
| Side effects | 24 hours postoperatively | Side effects such as nausea and vomiting, psychological reactions will be noted. |
Countries
Egypt
Contacts
Primary ContactRabab M Mohamed, MD
Outcome results
None listed