scholarly journals Evaluation of the learning curve for external cephalic version using cumulative sum analysis

2017 ◽  
Vol 60 (4) ◽  
pp. 343 ◽  
Author(s):  
So Yun Kim ◽  
Jung Yeol Han ◽  
Eun Hye Chang ◽  
Dong Wook Kwak ◽  
Hyun Kyung Ahn ◽  
...  
Keyword(s):  
Learning Curve ◽  
External Cephalic Version ◽  
Cumulative Sum ◽  
Cumulative Sum Analysis

scholarly journals Cumulative sum analysis of the learning curve for video-assisted minilaparotomy donor nephrectomy in healthy kidney donors

Medicine ◽  
2018 ◽  
Vol 97 (17) ◽  
pp. e0560 ◽  
Author(s):  
Jee Soo Park ◽  
Hyun Kyu Ahn ◽  
Joonchae Na ◽  
Hyung Ho Lee ◽  
Young Eun Yoon ◽  
...  
Keyword(s):  
Learning Curve ◽  
Donor Nephrectomy ◽  
Cumulative Sum ◽  
Kidney Donors ◽  
Video Assisted ◽  
Cumulative Sum Analysis

scholarly journals Subxiphoid uniportal video-assisted thoracoscopic pulmonary segmentectomy: effect of learning curve and future perspectives

2020 ◽  
Vol 58 (Supplement_1) ◽  
pp. i50-i57
Author(s):  
Amr Abdellateef ◽  
Xiaoyu Ma ◽  
Wenxiang Qiao ◽  
Zhigang Chen ◽  
Liang Wu ◽  
...  
Keyword(s):  
Learning Curve ◽  
Operative Time ◽  
Current Status ◽  
Case Group ◽  
Chest Drain ◽  
Cumulative Sum ◽  
Term Survival ◽  
Video Assisted ◽  
Cumulative Sum Analysis ◽  
Group 2

Abstract OBJECTIVES Subxiphoid uniportal video-assisted thoracoscopic segmentectomy (SU-VATs) has been widely adopted because it is associated with better postoperative pain scores. Nevertheless, it also has had some limitations that have gradually been decreasing. Therefore, our goal was to evaluate the change in perioperative results with SU-VATs as the learning curve developed to outline the current status and the points that should be of future concern. METHODS Three hundred patients who underwent SU-VATs from September 2014 to May 2018 were divided chronologically into 2 groups; group 1 comprised the first 150 cases and group 2 comprised the last 150 cases. Different perioperative variables were analysed and compared between the 2 groups. In addition, the cumulative sum analysis and multivariable logistic regression were conducted to identify the cut-off point and predictors of significant improvement in operative time. RESULTS The cumulative sum analysis showed significant improvement in the operative time after the 148th case. Group 2 showed a statistically significant decrease in operative time (104.3 ± 36.7 vs 132 ± 43.1 min; P < 0.001), amount of operative blood loss [50 (80 ml) vs 100 (50 ml); P < 0.001], chest drain duration (2.6 ± 1.6 vs 3.2 ± 1.4 days; P = 0.004) and hospital stay (3.7 ± 1.7 vs 4.2 ± 1.7 days; P = 0.008). The number of dissected lymph nodes was significantly higher in the second group [11 (4) vs 9 (4); P < 0.001]. CONCLUSIONS Limitations of SU-VATs are being overcome by the improvement in the learning curve and in the expertise of the surgeons. Our future concerns should focus on examining the long-term survival rate, the oncological efficacy and the effect on quality of life.

Learning curve for fetoscopic laser surgery using cumulative sum analysis

2014 ◽  
Vol 93 (7) ◽  
pp. 705-711 ◽  
Author(s):  
Suzanne H.P. Peeters ◽  
Erik W. Van Zwet ◽  
Dick Oepkes ◽  
Enrico Lopriore ◽  
Frans J. Klumper ◽  
...  
Keyword(s):  
Learning Curve ◽  
Laser Surgery ◽  
Cumulative Sum ◽  
Cumulative Sum Analysis

The learning curve in pure laparoscopic donor right hepatectomy: a cumulative sum analysis

2019 ◽  
Vol 33 (11) ◽  
pp. 3741-3748 ◽  
Author(s):  
Suk Kyun Hong ◽  
Kyung-Suk Suh ◽  
Kyung Chul Yoon ◽  
Jeong-Moo Lee ◽  
Jae-Hyung Cho ◽  
...  
Keyword(s):  
Learning Curve ◽  
Right Hepatectomy ◽  
Cumulative Sum ◽  
Cumulative Sum Analysis

Assessing ultrasound-guided axillary vein cannulation using a cumulative sum analysis: A single operator experience

2021 ◽  
pp. 112972982110384
Author(s):  
Linjia Zhu ◽  
Chanjuan Gong ◽  
Jinming Zhu ◽  
Lili Zhu ◽  
Liang Chen ◽  
...  
Keyword(s):  
Learning Curve ◽  
Success Rate ◽  
Operating Time ◽  
Axillary Vein ◽  
Ultrasound Guided ◽  
Cumulative Sum ◽  
Operator Experience ◽  
Vein Cannulation ◽  
Cumulative Sum Analysis ◽  
Procedural Time

Background: Ultrasound-guided axillary vein (AxV) cannulation has been described as an effective alternative to internal jugular vein cannulation in adult cardiac surgical patients. However, the learning curve for this technique has not yet been addressed. This study aimed to determine the number of cases required to achieve proficiency in performing AxV cannulation among novice anesthesiologists. Methods: This prospective study included the first 60 patients who underwent ultrasound-guided AxV cannulation performed by a single third-year resident who was trained in adult cardiac anesthesia. This study investigated the number of cases required to gain technical proficiency by applying cumulative sum analysis on the learning curve (LC-CUSUM) of ultrasound-guided AxV cannulation. Results: Based on the assessment of the CUSUM plots, a descending inflection point for decreasing the overall procedural time for AxV cannulation was observed after patient 29. Regarding the procedural outcomes, comparing the early-experience group with the late-experience group (29 vs 31 cases), the former group had longer operating time (1526 s vs 1120 s, p < 0.001) and identification time (110 s vs 92 s, p < 0.001) and lower first-attempt success rate (8, 27.6% vs 30, 96.8%, p < 0.001) than the latter group. Conclusions: CUSUM demonstrated that at least 29 successful cases are required to achieve an expertized manipulation in ultrasound-guided AxV cannulation for inexperienced novices. The learning curve for ultrasound-guided AxV cannulation was observed in 29 cases. After adequate training, the overall procedural time and the first-attempt success rate, and puncture-related complications for AxV cannulation improved with increased experience.

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