1.Analysis of the effect of fentanyl dosage used in patient-controlled analgesia for pain management after oral cancer surgery: a retrospective observational study
Kyung Nam PARK ; Seung-Hwa RYOO ; Myong-Hwan KARM ; Hyun Jeong KIM ; Kwang-Suk SEO
Journal of Dental Anesthesia and Pain Medicine 2025;25(1):43-53
Background:
Postoperative pain management is challenging in patients with oral cancer, especially those undergoing reconstructive surgery. Patient-controlled analgesia (PCA) is widely used, and fentanyl (FTN) concentration adjustments may improve pain control. This study aimed to evaluate the effects of FTN PCA concentration and reconstructive surgery on postoperative pain in patients with oral cancer.
Methods:
This retrospective observational study analyzed 140 patients with oral cancer who underwent surgery under general anesthesia. Patients were categorized based on FTN PCA dosage (FTN 700 mcg and ketorolac 150 mg vs. FTN 1400 mcg and ketorolac 150 mg). Pain was assessed using the visual analog scale (VAS) at multiple time points postoperatively (0, 12, 24, 36, 48, 60, and 72 h). PCA usage patterns, including demand count, delivery count, and delivery/demand ratios, were compared across subgroups. Missing data were imputed using linear interpolation.
Results:
PCA usage and pain control were evaluated between the FTN 700 mcg (N = 40) and 1400 mcg (N = 100) groups, stratified by reconstruction status. Demographic characteristics showed no significant difference.In the reconstructive surgery subgroup, patients in the FTN 1400 mcg group showed lower PCA refill counts (1.45 ± 0.69 vs. 1.61 ± 0.58) and fewer delivery counts (17.1 ± 21.3 vs. 25.1 ± 28.5) compared to those in the FTN 700 mcg group, achieving similar or superior pain control with fewer interventions. Similarly, patients without reconstructive surgery in the FTN 1400 mcg group demonstrated lower PCA refill counts, shorter PCA usage times, and fewer delivery counts. VAS scores decreased consistently over time across all groups but remained higher in the reconstruction groups. Logistic regression analysis revealed that patients with reconstructive surgery in the FTN 1400 mcg group were more likely to achieve a VAS score of ≤ 3.0 at 72 h postoperatively (P = 0.022). These findings indicate FTN 1400 mcg’s superiority in managing postoperative pain.
Conclusion
Comparing FTN PCA dosages, 1400 mcg demonstrated superior pain control to 700 mcg in patients undergoing oral cancer surgery, particularly those who underwent reconstructive surgery. This finding underscores the importance of optimizing FTN dosages to enhance postoperative pain management, reduce PCA-related demands, and achieve better patient outcomes.
2.Analysis of the effect of fentanyl dosage used in patient-controlled analgesia for pain management after oral cancer surgery: a retrospective observational study
Kyung Nam PARK ; Seung-Hwa RYOO ; Myong-Hwan KARM ; Hyun Jeong KIM ; Kwang-Suk SEO
Journal of Dental Anesthesia and Pain Medicine 2025;25(1):43-53
Background:
Postoperative pain management is challenging in patients with oral cancer, especially those undergoing reconstructive surgery. Patient-controlled analgesia (PCA) is widely used, and fentanyl (FTN) concentration adjustments may improve pain control. This study aimed to evaluate the effects of FTN PCA concentration and reconstructive surgery on postoperative pain in patients with oral cancer.
Methods:
This retrospective observational study analyzed 140 patients with oral cancer who underwent surgery under general anesthesia. Patients were categorized based on FTN PCA dosage (FTN 700 mcg and ketorolac 150 mg vs. FTN 1400 mcg and ketorolac 150 mg). Pain was assessed using the visual analog scale (VAS) at multiple time points postoperatively (0, 12, 24, 36, 48, 60, and 72 h). PCA usage patterns, including demand count, delivery count, and delivery/demand ratios, were compared across subgroups. Missing data were imputed using linear interpolation.
Results:
PCA usage and pain control were evaluated between the FTN 700 mcg (N = 40) and 1400 mcg (N = 100) groups, stratified by reconstruction status. Demographic characteristics showed no significant difference.In the reconstructive surgery subgroup, patients in the FTN 1400 mcg group showed lower PCA refill counts (1.45 ± 0.69 vs. 1.61 ± 0.58) and fewer delivery counts (17.1 ± 21.3 vs. 25.1 ± 28.5) compared to those in the FTN 700 mcg group, achieving similar or superior pain control with fewer interventions. Similarly, patients without reconstructive surgery in the FTN 1400 mcg group demonstrated lower PCA refill counts, shorter PCA usage times, and fewer delivery counts. VAS scores decreased consistently over time across all groups but remained higher in the reconstruction groups. Logistic regression analysis revealed that patients with reconstructive surgery in the FTN 1400 mcg group were more likely to achieve a VAS score of ≤ 3.0 at 72 h postoperatively (P = 0.022). These findings indicate FTN 1400 mcg’s superiority in managing postoperative pain.
Conclusion
Comparing FTN PCA dosages, 1400 mcg demonstrated superior pain control to 700 mcg in patients undergoing oral cancer surgery, particularly those who underwent reconstructive surgery. This finding underscores the importance of optimizing FTN dosages to enhance postoperative pain management, reduce PCA-related demands, and achieve better patient outcomes.
3.Analysis of the effect of fentanyl dosage used in patient-controlled analgesia for pain management after oral cancer surgery: a retrospective observational study
Kyung Nam PARK ; Seung-Hwa RYOO ; Myong-Hwan KARM ; Hyun Jeong KIM ; Kwang-Suk SEO
Journal of Dental Anesthesia and Pain Medicine 2025;25(1):43-53
Background:
Postoperative pain management is challenging in patients with oral cancer, especially those undergoing reconstructive surgery. Patient-controlled analgesia (PCA) is widely used, and fentanyl (FTN) concentration adjustments may improve pain control. This study aimed to evaluate the effects of FTN PCA concentration and reconstructive surgery on postoperative pain in patients with oral cancer.
Methods:
This retrospective observational study analyzed 140 patients with oral cancer who underwent surgery under general anesthesia. Patients were categorized based on FTN PCA dosage (FTN 700 mcg and ketorolac 150 mg vs. FTN 1400 mcg and ketorolac 150 mg). Pain was assessed using the visual analog scale (VAS) at multiple time points postoperatively (0, 12, 24, 36, 48, 60, and 72 h). PCA usage patterns, including demand count, delivery count, and delivery/demand ratios, were compared across subgroups. Missing data were imputed using linear interpolation.
Results:
PCA usage and pain control were evaluated between the FTN 700 mcg (N = 40) and 1400 mcg (N = 100) groups, stratified by reconstruction status. Demographic characteristics showed no significant difference.In the reconstructive surgery subgroup, patients in the FTN 1400 mcg group showed lower PCA refill counts (1.45 ± 0.69 vs. 1.61 ± 0.58) and fewer delivery counts (17.1 ± 21.3 vs. 25.1 ± 28.5) compared to those in the FTN 700 mcg group, achieving similar or superior pain control with fewer interventions. Similarly, patients without reconstructive surgery in the FTN 1400 mcg group demonstrated lower PCA refill counts, shorter PCA usage times, and fewer delivery counts. VAS scores decreased consistently over time across all groups but remained higher in the reconstruction groups. Logistic regression analysis revealed that patients with reconstructive surgery in the FTN 1400 mcg group were more likely to achieve a VAS score of ≤ 3.0 at 72 h postoperatively (P = 0.022). These findings indicate FTN 1400 mcg’s superiority in managing postoperative pain.
Conclusion
Comparing FTN PCA dosages, 1400 mcg demonstrated superior pain control to 700 mcg in patients undergoing oral cancer surgery, particularly those who underwent reconstructive surgery. This finding underscores the importance of optimizing FTN dosages to enhance postoperative pain management, reduce PCA-related demands, and achieve better patient outcomes.
4.Submental/submandibular intubation: a journey from past to future
Kyung Nam PARK ; Myong-Hwan KARM
Anesthesia and Pain Medicine 2024;19(4):280-293
In 1986, Altemir published the first article on submental intubation as an alternative to tracheostomy for managing difficult airways. This review provides an overview of submental/submandibular intubation, covering its development, techniques, and clinical outcomes. Initially devised to address difficult airways in oral and maxillofacial surgery, the technique has since evolved. Recent advancements include focused surgical incisions, ultrasound-guided imaging, and the use of improved procedural tools like the Seldinger technique. Clinical trials have demonstrated that submental/submandibular intubation is generally more efficient and quicker than tracheostomy in trauma patients. One of its key advantages is the absence of visible scarring, along with a less invasive recovery process. However, the technique has some limitations, including risks of infection, bleeding, and scarring, which require further investigation to optimize its application. While submental/submandibular intubation remains a valuable method for managing difficult airways, ongoing refinement and evaluation are necessary to maximize its clinical utility. This technique presents an excellent alternative in specific surgical scenarios and offers a simplified solution where other intubation methods may be unfeasible.
5.Cooled radiofrequency ablation of genicular nerves for knee osteoarthritis
Myong-Hwan KARM ; Hyun-Jung KWON ; Chan-Sik KIM ; Doo-Hwan KIM ; Jin-Woo SHIN ; Seong-Soo CHOI
The Korean Journal of Pain 2024;37(1):13-25
Knee osteoarthritis (OA) is a prevalent and debilitating musculoskeletal condition that significantly affects the quality of life of millions of individuals worldwide. In recent years, cooled radiofrequency ablation (CRFA) has become a viable treatment option for knee OA. This review thoroughly evaluated the existing literature on CRFA therapy for knee OA. It delved into the mechanisms behind CRFA, evaluated its clinical efficacy, and investigated potential avenues for future research and application. The insights gained from this review are crucial for healthcare professionals, researchers, and policymakers, offering an updated perspective on CRFA's role as a viable therapeutic option for knee OA.
6.Submental/submandibular intubation: a journey from past to future
Kyung Nam PARK ; Myong-Hwan KARM
Anesthesia and Pain Medicine 2024;19(4):280-293
In 1986, Altemir published the first article on submental intubation as an alternative to tracheostomy for managing difficult airways. This review provides an overview of submental/submandibular intubation, covering its development, techniques, and clinical outcomes. Initially devised to address difficult airways in oral and maxillofacial surgery, the technique has since evolved. Recent advancements include focused surgical incisions, ultrasound-guided imaging, and the use of improved procedural tools like the Seldinger technique. Clinical trials have demonstrated that submental/submandibular intubation is generally more efficient and quicker than tracheostomy in trauma patients. One of its key advantages is the absence of visible scarring, along with a less invasive recovery process. However, the technique has some limitations, including risks of infection, bleeding, and scarring, which require further investigation to optimize its application. While submental/submandibular intubation remains a valuable method for managing difficult airways, ongoing refinement and evaluation are necessary to maximize its clinical utility. This technique presents an excellent alternative in specific surgical scenarios and offers a simplified solution where other intubation methods may be unfeasible.
7.Submental/submandibular intubation: a journey from past to future
Kyung Nam PARK ; Myong-Hwan KARM
Anesthesia and Pain Medicine 2024;19(4):280-293
In 1986, Altemir published the first article on submental intubation as an alternative to tracheostomy for managing difficult airways. This review provides an overview of submental/submandibular intubation, covering its development, techniques, and clinical outcomes. Initially devised to address difficult airways in oral and maxillofacial surgery, the technique has since evolved. Recent advancements include focused surgical incisions, ultrasound-guided imaging, and the use of improved procedural tools like the Seldinger technique. Clinical trials have demonstrated that submental/submandibular intubation is generally more efficient and quicker than tracheostomy in trauma patients. One of its key advantages is the absence of visible scarring, along with a less invasive recovery process. However, the technique has some limitations, including risks of infection, bleeding, and scarring, which require further investigation to optimize its application. While submental/submandibular intubation remains a valuable method for managing difficult airways, ongoing refinement and evaluation are necessary to maximize its clinical utility. This technique presents an excellent alternative in specific surgical scenarios and offers a simplified solution where other intubation methods may be unfeasible.
8.Submental/submandibular intubation: a journey from past to future
Kyung Nam PARK ; Myong-Hwan KARM
Anesthesia and Pain Medicine 2024;19(4):280-293
In 1986, Altemir published the first article on submental intubation as an alternative to tracheostomy for managing difficult airways. This review provides an overview of submental/submandibular intubation, covering its development, techniques, and clinical outcomes. Initially devised to address difficult airways in oral and maxillofacial surgery, the technique has since evolved. Recent advancements include focused surgical incisions, ultrasound-guided imaging, and the use of improved procedural tools like the Seldinger technique. Clinical trials have demonstrated that submental/submandibular intubation is generally more efficient and quicker than tracheostomy in trauma patients. One of its key advantages is the absence of visible scarring, along with a less invasive recovery process. However, the technique has some limitations, including risks of infection, bleeding, and scarring, which require further investigation to optimize its application. While submental/submandibular intubation remains a valuable method for managing difficult airways, ongoing refinement and evaluation are necessary to maximize its clinical utility. This technique presents an excellent alternative in specific surgical scenarios and offers a simplified solution where other intubation methods may be unfeasible.
9.Submental/submandibular intubation: a journey from past to future
Kyung Nam PARK ; Myong-Hwan KARM
Anesthesia and Pain Medicine 2024;19(4):280-293
In 1986, Altemir published the first article on submental intubation as an alternative to tracheostomy for managing difficult airways. This review provides an overview of submental/submandibular intubation, covering its development, techniques, and clinical outcomes. Initially devised to address difficult airways in oral and maxillofacial surgery, the technique has since evolved. Recent advancements include focused surgical incisions, ultrasound-guided imaging, and the use of improved procedural tools like the Seldinger technique. Clinical trials have demonstrated that submental/submandibular intubation is generally more efficient and quicker than tracheostomy in trauma patients. One of its key advantages is the absence of visible scarring, along with a less invasive recovery process. However, the technique has some limitations, including risks of infection, bleeding, and scarring, which require further investigation to optimize its application. While submental/submandibular intubation remains a valuable method for managing difficult airways, ongoing refinement and evaluation are necessary to maximize its clinical utility. This technique presents an excellent alternative in specific surgical scenarios and offers a simplified solution where other intubation methods may be unfeasible.
10.Patient-controlled sedation using remimazolam during third molar extraction: a case report
Kyung Nam PARK ; Myong-Hwan KARM ; Kwang-Suk SEO ; Hyun Jeong KIM ; Seung-Hwa RYOO
Journal of Dental Anesthesia and Pain Medicine 2024;24(1):75-80
Dental sedation plays a pivotal role in alleviating patient anxiety during various procedures. Remimazolam, a benzodiazepine derivative, stands out for its distinctive attributes, particularly its rapid onset of sedation coupled with a brief duration, making it an invaluable option for dental applications. The patient was admitted for the extraction of impacted third molars via patient-controlled sedation and not only demonstrated stable vital signs but also expressed a high level of satisfaction with the procedure. An in-depth analysis of plasma remimazolam concentrations and changes in the Patient State Index revealed negative correlation patterns, highlighting the inherent potential of remimazolam in achieving effective sedation. This expanded research scope aims to provide a more nuanced understanding of the pharmacological responses to remimazolam in dental sedation scenarios.This case report offers valuable insights into the evolving landscape of dental sedation methodologies and paves the way for a more informed and evidence-based approach to the use of remimazolam in patient-controlled sedation.

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