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All Journal Open Access Indonesian Journal of Medical Reviews Journal of Anesthesiology and Clinical Research
Isngadi
Department of Anesthesiology and Intensive Therapy, Faculty of Medicine, Universitas Brawijaya/Dr. Saiful Anwar Regional General Hospital, Malang, Indonesia
Biochemistry, Genetics & Molecular Biology Health Professions Immunology & microbiology Medicine & Pharmacology Neuroscience

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Evaluation of Morphine-Sparing Efficacy with Low-Dose Ketamine in Pediatric Postoperative Pain: A Pilot Randomized Controlled Trial Naim Ismail Imunu; Isngadi; Rudy Vitraludyono; Arie Zainul Fatoni
Open Access Indonesian Journal of Medical Reviews Vol. 6 No. 1 (2026): Open Access Indonesian Journal of Medical Reviews
Publisher : HM Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37275/oaijmr.v6i1.835

Abstract

Postoperative pain management in the pediatric population requires a delicate balance between effective analgesia and the minimization of opioid-related adverse events, particularly respiratory depression. While multimodal analgesia is the standard of care, the optimal dose-reduction potential of opioids when combined with N-methyl-D-aspartate (NMDA) antagonists remains undefined. We conducted a prospective, single-center, pilot randomized controlled trial using a double-blind observer protocol. Twenty pediatric patients aged 2 months to 7 years undergoing elective surgery were randomized into four groups. The control group (Group M) received standard continuous morphine at 0.33 µg/kg/min. Three intervention groups received fixed low-dose ketamine at 0.33 µg/kg/min combined with tapered morphine doses: Group KM-1 at 0.23 µg/kg/min, Group KM-2 at 0.16 µg/kg/min, and Group KM-3 at 0.06 µg/kg/min. The primary outcome was analgesic efficacy assessed by FLACC scores at 24 hours. Secondary outcomes included hemodynamic stability and rescue analgesia requirements. Baseline characteristics were comparable across groups. At 24 hours, the median FLACC scores were comparable between the high-dose control (Median 2.0; Interquartile Range 1.5–2.0) and the lowest morphine group (Group KM-3: Median 2.0; Interquartile Range 1.5–2.0; p = 0.438). Group KM-3 achieved an 81% reduction in morphine consumption with a 0% rescue analgesia rate, identical to the control group. In conclusion, preliminary data from this pilot study suggest that low-dose ketamine may permit a substantial reduction in morphine dosage of up to 81% without compromising analgesic efficacy. These findings warrant confirmation in larger, fully powered multicenter trials.
The Novice Overshoot: A Bispectral Index-Based Analysis of the Anesthesiology Resident Learning Curve for Anesthetic Depth Control in Supervised Practice Rizki Suhadayanti; Isngadi; Buyung Hartiyo Laksono; Ristiawan Muji Laksono
Journal of Anesthesiology and Clinical Research Vol. 6 No. 2 (2025): Journal of Anesthesiology and Clinical Research
Publisher : HM Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37275/jacr.v6i2.790

Abstract

Introduction: The skillful management of anesthetic depth is a cornerstone of anesthesiology, yet the objective characterization of the resident learning curve remains underexplored. This study aimed to quantitatively map the developmental trajectory of anesthetic depth control among anesthesiology residents in a supervised clinical environment. Methods: We conducted a prospective, cross-sectional, observational study involving 21 anesthesiology residents (from seven sequential semesters of training) and 105 ASA I-II adult patients at a tertiary academic hospital. Under standardized supervision, residents induced general anesthesia. The primary outcome was the Bispectral Index (BIS) value and its categorical distribution (Deep: <40, General: 40-60, Sedation: >60) at 2 minutes post-intubation. Secondary outcomes included propofol induction dose and hemodynamic responses. Data were analyzed using ANOVA, Kruskal-Wallis, and Chi-square tests. Results: Post-intubation mean BIS values showed a non-significant trend towards being lower in junior residents compared to seniors (p=0.088). However, the categorical distribution of BIS values differed significantly across training levels (p=0.015). Junior residents (Semesters I-II) induced a state of deep anesthesia (BIS < 40) in 46.7% of their patients, compared to only 11.1% for senior residents (Semesters V-VII) (p<0.001). This correlated with junior residents using significantly higher weight-adjusted propofol doses (2.4 ± 0.3 mg/kg vs. 1.9 ± 0.2 mg/kg; p<0.001). Conclusion: The anesthesiology resident learning curve is characterized by a distinct pattern of initial over-titration, or a "novice overshoot," leading to a higher incidence of unnecessarily deep anesthesia. While mean BIS values did not differ significantly, the distribution of hypnotic states reveals a critical educational target. BIS monitoring serves as a valuable objective tool for tracking the performance of the resident-supervisor dyad, offering data-driven insights for enhancing competency-based training and patient safety.
Co-Authors Arie Zainul Fatoni Buyung Hartiyo Laksono Naim Ismail Imunu Ristiawan Muji Laksono Rizki Suhadayanti Rudy Vitraludyono