See the published version of this preprint at BMC Surgery.
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Research article
Hung Chieh Lo
Taipei Municipal Wanfang Hospital
Corresponding Author
ORCiD: https://orcid.org/0000-0001-6079-8657
License:
This work is licensed under a CC BY 4.0 License. Read Full License
Background The study aim was to reevaluate the learning curve of laparoscopic Roux-en Y gastric bypass (LRYGB) in the modern era considering a single surgeon’s experience.
Methods Except those with body mass index (BMI) >50 kg/m2 needs further discussion; all other patients who met the regional criteria and underwent primary LRYGB were retrospectively enrolled. Those who underwent surgery in 2016-17, 2018 and 2019 by a single surgeon with 10+ years of laparoscopic experience were assigned to groups A, B and C, respectively. Patient demographics and 30-day outcome data, including operation time, length of stay (LOS), emergency room visits, readmission, and reoperation, were compared between groups.
Results One hundred and eight patients met the inclusion criteria; 36, 38, and 34 patients were assigned to groups A, B and C, respectively. There were no differences in age, sex distribution or common comorbidities between groups, except group B had a lower BMI (35.1 kg/m2 vs. 37.0 kg/m2) and a higher rate of hypertension (44.7% vs. 22.2%) than group A. The operation time was markedly reduced (96.1 min and 114.9 min, respectively), and the LOS was shortened (2.2 days and 2.9 days, respectively) in group B compared to group A and remained stationary in group C, with no further reduction in 30-day complications.
Conclusion The learning process for LRYGB can be shortened to approximately 30 cases if conducted selectively and by experienced laparoscopic surgeons. Further follow-up is required to verify the long-term safety and its applicability to other patient subgroups.
Keywords
Obesity, Roux-en Y Gastric Bypass, Bariatric, Learning curve
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CURRENT STATUS: Published
View the published article at BMC Surgery.
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Posted 12 Nov, 2020
No community comments so far
Editorial decision: Minor revision
On 15 Dec, 2020
Review #1 received
Received 14 Dec, 2020
Review #2 received
Received 08 Dec, 2020
Reviewer #3 agreed
On 29 Nov, 2020
Reviewer #2 agreed
On 21 Nov, 2020
Reviewer #1 agreed
On 15 Nov, 2020
Reviewers invited
Invitations sent on 12 Nov, 2020
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On 27 Oct, 2020
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On 27 Oct, 2020
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On 27 Oct, 2020
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A new preprint design is coming!
We have improved readability, clarity, accessibility, and opportunities for engagement.
See the published version of this preprint at BMC Surgery.
This is a preprint, a preliminary version of a manuscript that has not completed peer review at a journal. Research Square does not conduct peer review prior to posting preprints. The posting of a preprint on this server should not be interpreted as an endorsement of its validity or suitability for dissemination as established information or for guiding clinical practice.
Learn more about In Review
Research article
Hung Chieh Lo
Taipei Municipal Wanfang Hospital
Corresponding Author
ORCiD: https://orcid.org/0000-0001-6079-8657
Badges
Prescreen
This manuscript passed our Prescreen assessment
Complete author information
Appropriate declaration statements
Potential risks to human health
Prescreen
Peer Review Timeline
CURRENT STATUS: Published
View the published article at BMC Surgery.
Version 1
Posted 12 Nov, 2020
No community comments so far
Editorial decision: Minor revision
On 15 Dec, 2020
Review #1 received
Received 14 Dec, 2020
Review #2 received
Received 08 Dec, 2020
Reviewer #3 agreed
On 29 Nov, 2020
Reviewer #2 agreed
On 21 Nov, 2020
Reviewer #1 agreed
On 15 Nov, 2020
Reviewers invited
Invitations sent on 12 Nov, 2020
Editor assigned
On 27 Oct, 2020
Submission checks complete
On 27 Oct, 2020
Editor invited
On 27 Oct, 2020
First submitted
On 26 Oct, 2020
Metrics
Comments: 0
PDF Downloads: ...
HTML Views: ...
License:
This work is licensed under a CC BY 4.0 License. Read Full License
View the published article at BMC Surgery.
Background The study aim was to reevaluate the learning curve of laparoscopic Roux-en Y gastric bypass (LRYGB) in the modern era considering a single surgeon’s experience.
Methods Except those with body mass index (BMI) >50 kg/m2 needs further discussion; all other patients who met the regional criteria and underwent primary LRYGB were retrospectively enrolled. Those who underwent surgery in 2016-17, 2018 and 2019 by a single surgeon with 10+ years of laparoscopic experience were assigned to groups A, B and C, respectively. Patient demographics and 30-day outcome data, including operation time, length of stay (LOS), emergency room visits, readmission, and reoperation, were compared between groups.
Results One hundred and eight patients met the inclusion criteria; 36, 38, and 34 patients were assigned to groups A, B and C, respectively. There were no differences in age, sex distribution or common comorbidities between groups, except group B had a lower BMI (35.1 kg/m2 vs. 37.0 kg/m2) and a higher rate of hypertension (44.7% vs. 22.2%) than group A. The operation time was markedly reduced (96.1 min and 114.9 min, respectively), and the LOS was shortened (2.2 days and 2.9 days, respectively) in group B compared to group A and remained stationary in group C, with no further reduction in 30-day complications.
Conclusion The learning process for LRYGB can be shortened to approximately 30 cases if conducted selectively and by experienced laparoscopic surgeons. Further follow-up is required to verify the long-term safety and its applicability to other patient subgroups.
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