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The effects of a combination of intravenous dexamethasone and ketamine on postoperative mood in patients undergoing laparoscopically assisted-gynecologic surgery

Cheol Lee, Juhwan Lee, Gilho Lee, Hayeong Lee, Shicheng Zhou, Jihyo Hwang

Psychopharmacology June 14, 2018 DOI: 10.1007/s00213-018-4939-z (opens in new tab)

Study at a glance

AI-extracted from the abstract
Characteristics Randomized controlled trial Peer reviewed
Sample size 297
Population Patients undergoing gynecologic surgery
Interventions Ketamine Dexamethasone
Dose ketamine 0.5 mg/kg iv; dexamethasone 0.1 mg/kg iv
Duration Assessed on the first and third day after surgery
Measures Patient Health Questionnaire (PHQ)-9, Visual Analog Scale (VAS) for pain, patient controlled analgesia (PCA) consumption
Topics Esketamine Ketamine
Key findings A single dose of ketamine (0.5 mg/kg) with or without dexamethasone significantly reduced PHQ-9 depression scores on postoperative days 1 and 3, whereas dexamethasone alone (0.1 mg/kg) did not change mood scores. The combination of ketamine and dexamethasone also significantly reduced 24-hour pain scores and patient-controlled analgesia consumption compared with either drug alone.

Abstract

It has been known that anesthetic adjuvants such as dexamethasone or ketamine might change mood. This study aimed to investigate the effects of a single dose of each drug individually along with their combined usage on postoperative mood changes in patients undergoing gynecologic surgery. Two hundred ninety-seven patients randomly allocated were divided into three groups. Group K (n = 99) received a single dose of ketamine (0.5 mg/kg iv); group D (n = 99) received a single dose of dexamethasone (0.1 mg/kg iv), and group KD (n = 99) received both ketamine (0.5 mg/kg iv) and dexamethasone (0.1 mg/kg iv) at 5 min after the induction of anesthesia. A change in the patient health questionnaire (PHQ)-9 scores on the first and third day after surgery, the duration of anesthesia, the postoperative visual analog scale (VAS) for pain, and the patient controlled analgesia (PCA) consumption were evaluated. Groups K and KD showed a significant reduction in PHQ-9 score on both the first and third day after surgery compared with those recorded preoperatively and in group D (P < 0.01). There were no differences in the group D PHQ-9 scores pre- and post-operatively. The VAS for pain 24 h after surgery and the PCA consumption in group KD decreased significantly compared to the other two groups (P < 0.05). A single dose of ketamine (0.5 mg/kg) with or without combination with dexamethasone (0.1 mg/kg) give iv 5 min after induction of general anesthetic produced significant improvement in the postoperative mood scores. A single intravenous dose of dexamethasone (0.1 mg/kg) alone did not change postoperative mood scores. The VAS for pain 24 h after surgery and the PCA consumption was significantly lower in patients who received combination of both drugs.

Comparable studies

Other randomized controlled trials on ketamine, most cited first.

Study Year Design Participants
Subanesthetic Effects of the Noncompetitive NMDA Antagonist, Ketamine, in Humans Healthy human subjects recruited from the community 1994 Randomized controlled trial n = 19
Antidepressant Efficacy of Ketamine in Treatment-Resistant Major Depression: A Two-Site Randomized Controlled Trial Patients with treatment-resistant major depression experiencing a major depressive episode 2013 Randomized controlled trial n = 73
Remifentanil-induced Postoperative Hyperalgesia and Its Prevention with Small-dose Ketamine Patients undergoing major abdominal surgery 2005 Randomized controlled trial n = 75
Efficacy of Intravenous Ketamine for Treatment of Chronic Posttraumatic Stress Disorder Patients with chronic PTSD related to a range of trauma exposures 2014 Randomized controlled trial n = 41
Ketamine-Induced Deficits in Auditory and Visual Context-Dependent Processing in Healthy Volunteers Healthy volunteers 2000 Single-blind placebo-controlled study n = 20

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