At a glance
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Dexmedetomidine Improves Oxygenation and Reduces Pulmonary Shunt in High-Risk Pediatric Patients Undergoing One-Lung Ventilation for Thoracic Surgery: A Double-Blind Randomized Controlled Trial at Damascus University Children's Hospital
In Brief
A clinical study evaluating Dexmedetomidine and Normal saline for One-Lung Ventilation and Thoracic Surgery. Completed, enrolled 78 participants across 1 site.
Detailed Summary
Children with high anesthetic risk who underwent Thoracic surgery with OLV (one lung ventilation) technique during general anesthesia were divided into two groups. The first is an intravenous injection of dexmedetomidine at a rate of 0.4 micrograms/kg/hour as a continuous intravenous infusion. The second group, the placebo group, injected the second with a normal saline solution, an infusion that will pass through the vein, using blinded, unmarked syringes. Three arterial blood gas (ABG) samples were taken during surgery at designated times. Circulatory PaO2 values were recorded and the Qs/Qt shunt value was calculated.
Study Details
Timeline
Interventions
Infusion syringes are supplied with a concentration of 0.25 mcg / mL (dexmedetomidine ) either 80 mcg / 20 mL, 200 mcg / 50 mL, or 400 mcg / 100 mL. For example, it begins with an infusion of 4 ml over 10 minutes and then continues the infusion, depending on the weight of the child, at a rate of 1.6 ml/kg/hour. All injections will be prepared randomly by a doctor who did not participate in the study, and then placed in unmarked infusion pumps, given to an anesthesiologist (more than 10 years experience in pediatric anesthesia) without knowledge of the infusion content. The randomization process is carried out via sealed envelope technique. The injections in both groups will be stopped before the skin is closed. Both patients and anesthesiologists blinded the study drug (dexmedetomidine or placebo) by infusion of solution (dexmedetomidine or placebo). Depending on the size in ml, to ensure that there is no bias and blindness to the medical team about what the drug is.
Normal saline (NS) for intravenous infusion is supplied in pre-filled syringes of 20 ml, 50 ml, and 100 ml. To maintain blinding in this study, NS is handled identically to the study drug, dexmedetomidine. A physician not involved in the study prepares all injections, randomly assigning either NS or dexmedetomidine using a sealed envelope technique. Prepared syringes are then placed in identical, unmarked infusion pumps. Infusion Protocol: Anesthesiologists, blinded to the infusion contents, administer the solutions according to the protocol: For example,Initial Bolus: 4 ml infused over 10 minutes, Maintenance Infusion: Continued at a rate of 1.6 ml/kg/hour, adjusted to the individual patient's weight. This process ensures both patient and anesthesiologist remain blinded to the treatment arm, minimizing potential bias throughout the study.