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Seongyup Kim,Younglim Kim,Ji Woong Hwang,Suk-Bae Moon 대한외과학회 2017 Annals of Surgical Treatment and Research(ASRT) Vol.92 No.2
Purpose: Inhibitory effect of paclitaxel on neointimal hyperplasia after open cutdown has not been elucidated. Methods: For the control group (n = 16), silicone 2.7-Fr catheters were placed via the right external jugular vein with the cutdown method. For the treatment group (n = 16), a mixture of 0.65 mg of paclitaxel and 1 mL of fibrin glue was infiltrated around the exposed vein after cutdown. After scheduled intervals (1, 2, 4, and 8 weeks), the vein segment was harvested and morphometric analysis was performed on cross-sections. Results: Proliferation of smooth muscle cell (SMC) was strongly suppressed in the treatment group, and the ratio of neointima to vein wall was significantly reduced in the treatment group (8 weeks; 0.63 ± 0.08 vs. 0.2 ± 0.08, P < 0.05). Luminal patency was significantly more preserved in the treatment group, and the luminal area was significantly wider in the paclitaxel-treated group compared to the control group (8 weeks; 1.91 ± 0.43 mm2 vs. 5.1 ± 0.43 mm2, P < 0.05). Mean SMC counts measured at 1 and 2 weeks after cutdown were significantly lower in the treatment group (2 weeks; 115 ± 22 vs. 62 ± 22). Paclitaxel was undetectable in systemic circulation (<10 ng/mL). Conclusion: Sustained perivascular delivery of paclitaxel with fibrin glue was effective in inhibiting neointimal hyperplasia in rat jugular vein after open cutdown.
Unplanned Reoperation Rate at a Government-Designated Regional Trauma Center in Gangwon Province
( Minju Kim ),( Seongyup Kim ) 대한외상학회 2021 大韓外傷學會誌 Vol.34 No.1
Purpose: Determining appropriate ways to assess health care quality within the National Health Insurance System is of interest to both the Korean government and the medical community. However, in the trauma field, the number of indicators used to evaluate surgical quality is limited. Using data collected over 5 years at Wonju Severance Christian Hospital Trauma Center in Korea, this study aimed to determine whether the unplanned reoperation rate in the field of trauma surgery could be used to assess the quality of an institution’s surgical care. Methods: In total, 665 general surgical procedures were performed at the Trauma Center in 453 patients with abdominopelvic injuries from January 2015 to December 2019. Data were collected from the Trauma Center’s data registry and medical records, and included information regarding patients’ demographic characteristics, the type of index operation, and the reason for unplanned reoperations. Results: A total of 453 index operations were evaluated. The proportion of patients with an Injury Severity Score (ISS) >15 was 48-70% over the 5-year period, with an unplanned reoperation rate of 2.1-9.3%. Patients had an average ISS score of 17.5, while the average Abbreviated Injury Scale Score was 2.87. Unplanned reoperations were required in about 7% of patients. The most common complications requiring reoperation were recurrent bleeding (26.9%), wound problems (26.9%), intestinal infarction (15.4%), and anastomosis site leakage (7.7%). The procedures most frequently requiring unplanned reoperations were bowel surgery (segmental resection, primary repair, enterostomy, etc.) (24.5%) and preperitoneal pelvic packing (10.6%). Conclusions: The proportion of reoperations was confirmed to be affected by injury severity.
Song-Yi Kim,Wan Su Yun,Susmita Aryal,Woo Cheol Kim,Suk-bae Moon,Jaehong Key,Seongyup Kim 대한의용생체공학회 2023 Biomedical Engineering Letters (BMEL) Vol.13 No.3
The aim of this study is to investigate the potential impact of catheterization on intimal hyperplasia and explore the efficacyof Paclitaxel loaded PLGA nanoparticles (PTX-NPs) in preventing stenosis at the site of venous injury. Under general anesthesia,Central Venous Catheters were inserted into the rat’s right internal jugular veins (IJV) using the cut-down technique. Twenty bare catheters (C) and twenty PTX-NPs coated catheters (P) were assigned to one of four groups (C2, C4, P2, or P4)based on catheter type and expected survival time. 2 or 4 weeks after surgery, IJVs were completely harvested by formalinfixation and gelatin infusion and slides were stained with H&E (Haematoxylin and Eosin) and Masson's technique. The P2(Paclitaxel coating, 2 weeks) group showed the most proliferation among the four groups and the P4 (Paclitaxel coating,4 weeks) showed a tendency to decrease proliferation. Additionally, the lumen size in the P4 group was about 6% smaller thanin the P2 group, and there was a lower prevalence of stenotic grade in the P4 group. Our study suggests that PTX-NPs coatedcatheters may be effective in preventing venous stenosis if the intended usage is prolonged, rather than for a short-term period.
Common Carotid Artery Laceration Managed by Clamping at Emergency Department
( Young Un Choi ),( Kwangmin Kim ),( Seongyup Kim ),( Keumseok Bae ),( Ji Young Jang ),( Pil Young Jung ),( Hongjin Shim ),( Ki Youn Kwon ) 대한외상학회 2017 大韓外傷學會誌 Vol.30 No.4
Common carotid artery laceration is a life-threatening injury by causing hypovolemic shock. Nevertheless the initial management is very difficult until definitive surgery at operation room. Before neck exploration at operation room, arterial bleeding control by compressing the bleeding point is not always effective. We experienced one case with externally penetrating injuries in zone II neck, which was operated after clamping of common carotid artery in the emergency department. Here we report this case.