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World Journal of Emergency Surgery : WJES logoLink to World Journal of Emergency Surgery : WJES
. 2022 Mar 18;17:18. doi: 10.1186/s13017-022-00419-x

Minimally invasive surgery in emergency surgery: a WSES survey

Marco Ceresoli 1,✉,#, Michele Pisano 2,#, Fikri Abu-Zidan 3, Niccolò Allievi 2, Kurinchi Gurusamy 4,5, Walt L Biffl 6, Giovanni D Tebala 7, Fausto Catena 8, Luca Ansaloni 9, Massimo Sartelli 10, Yoram Kluger 11, Gianluca Baiocchi 12; WSES MIS working group; WSES MIS consortia, Federico Coccolini 13
PMCID: PMC8932166  PMID: 35300708

Abstract

Background

The diffusion of minimally invasive surgery in emergency surgery still represents a developing challenge. Evidence about the use of minimally invasive surgery shows its feasibility and safety; however, the diffusion of these techniques is still poor. The aims of the present survey were to explore the diffusion and variations in the use of minimally invasive surgery among surgeons in the emergency setting.

Methods

This is a web-based survey administered to all the WSES members investigating the diffusion of minimally invasive surgery in emergency. The survey investigated personal characteristics of participants, hospital characteristics, personal confidence in the use of minimally invasive surgery in emergency, limitations in the use of it and limitations to prosecute minimally invasive surgery in emergency surgery. Characteristics related to the use of minimally invasive surgery were studied with a multivariate ordinal regression.

Results

The survey collected a total of 415 answers; 42.2% of participants declared a working experience > 15 years and 69.4% of responders worked in tertiary level center or academic hospital. In primary emergencies, only 28,7% of participants declared the use of laparoscopy in more than 50% of times. Personal confidence with minimally invasive techniques was the highest for appendectomy and cholecystectomy. At multivariate ordinal regression, a longer professional experience, the use of laparoscopy in major elective surgery and bariatric surgery expertise were related to a higher use of laparoscopy in emergency surgery.

Conclusions

The survey shows that minimally invasive techniques in emergency surgery are still underutilized. Greater focus should be placed on the development of dedicated training in laparoscopy among emergency surgeons.

Supplementary Information

The online version contains supplementary material available at 10.1186/s13017-022-00419-x.

Keywords: Minimally invasive surgery, Emergency surgery, Laparoscopy, Survey

Introduction

Laparoscopy still represents the cornerstone of minimally invasive surgery (MIS); after 80 years of surgery performed by laparotomy, on September 12, 1980, the first laparoscopic appendectomy was performed, followed by a rapid expansion of this technique. The first laparoscopic cholecystectomy was performed between 1985 and 1987 in different parts of the world. From this date, all the abdominal quadrants and organs have been the targets for laparoscopic procedures, mostly in elective cases [14]. The pathway for the acceptance of elective laparoscopy has not been straightforward as reported for cholecystectomy [5]. However, technical limitations became the trigger for pioneers and industries to allow safer and simpler surgical maneuvers by improvement in visualization, dissectors and sealing devices [6]. Finally, also oncological issues have been investigated, in the last two decades, with good quality studies [7, 8].

Reasons for MIS development are heterogeneous and, in some way, interconnected: reduction of patient’s surgical stress, reduced postoperative pain, early return to regular activities, cosmetic advantages, the human innate propensity to innovation among surgeons, industries and economic factors. All these issues can be smoothly managed in elective cases and counterbalanced with patient safety, oncological issues, operating room occupancy, etc.

When we move to MIS in Emergency Surgery, the amount of available literature decreases in number and above all in quality, resulting in lot of uncertainty. According to Surgical Societies guidelines and large retrospective studies with literature reviews, laparoscopic appendectomy, cholecystectomy and gastric and duodenal ulcer repair are well accepted emergency surgical procedures. However, their diffusion, even in the same hospital, can be influenced by insufficient expertise that may correlate with hospital organizational model. Other surgical procedures such as laparoscopic treatment of small bowel occlusion, bowel resection for acute diverticulitis, are becoming more frequent but they are still not routinely suggested [914].

In a recent report of a large observational study from UK, laparoscopy is adopted in less than 20% of major surgeries in emergency [15].

These difficulties of diffusion of minimally invasive surgery in emergency setting could be attributed to several reasons, i.e., more complexity when compared to elective surgery, sicker patients, higher level of diagnostic uncertainty, no regular day and week working hours, organizational issue, the lack of a dedicated surgical training and not homogeneous surgical and team skills.

The aims of this survey were to explore whether there are variations in the use of minimally invasive surgery among surgeons in the emergency setting and if there were variations, the potential determinants of these variations.

Methods

Study design

This is cross-sectional study, which was performed during the period of March 21st 2021 to August 14th 2021 among the members of the World Society of Emergency Surgery.

Sample size

An invitation to participate to the survey was sent for all the members of the World Society of Emergency Surgery (WSES) through their email with the invite to extend the survey to all their colleagues. Sample size calculation is not required in this situation because all subjects were approached.

Questionnaire design

The on-line questionnaire is shown in Additional file 1. The design of the questionnaire was developed according to the published recommendations for the development and implementation of web-based surveys (CHERRIES) [16, 17] adopting the Google form tool (Alphabet Inc., Mountain View, CA, USA). It was written in English by a steering committee nominated by the WSES board. The final questionnaire was endorsed by the WSES board.

The self-administered questionnaire was developed in 5 sections:

  1. Personal characteristics,

  2. Hospital characteristics,

  3. Personal confidence in the use of minimally invasive surgery in emergency surgery,

  4. Limitations of the use of minimally invasive surgery in emergency surgery,

  5. Limitations to prosecute minimally invasive surgery in emergency surgery.

The countries of provenience were grouped into the six WHO regions (African region, American region, East Mediterranean Region, European Region, Southeast Asian region and West Pacific Region). Surgeries were divided into three categories: major elective abdominal surgery, primary emergency and secondary emergency (re-intervention after elective surgery). Minimally invasive emergency surgery interventions were further classified into four categories based on increasing difficulty (grade 1: appendectomy and cholecystectomy; grade 2: peptic ulcer perforation repair and adhesiolysis; grade 3: colonic resection for acute diverticulitis; grade 4: secondary emergencies). Questions about participants’ perceptions were ranked with response options from 0 to 5.

Validity and piloting

The study has mainly depended on surface validity. Content validity depended on the knowledge and experience of experts. The questionnaire was not piloted. Linguistic clarity was reviewed by 3 international experts from 2 different countries. The experts have different mother tongue languages including English and Italian which assured us that the language used in the questionnaire was clear and not ambiguous for the international participants.

Distribution of the survey and data collection

The invitation to the survey was distributed through WSES web during the period of March 21st 2021 to August 14th 2021. Four reminders were sent to the WSES members email list. Data were collected directly and stored through the website into an on-line database which was protected by a secure password. No incentives for participation were given.

Ethical considerations

The participation to the survey was voluntary and anonymous; an email address of each participant was used for invitation but no personal identifiers were collected. Confidentiality of respondents and their choices were secured. An ethical approval was not needed.

Statistical analysis

The results of the survey were shown as median along with Interquartile range for the continuous variable and percentages for categorical variables. A ordinal logistic regression model was calculated to investigate the role of respondent and hospital characteristics in the self-reported rate of use of laparoscopy in primary emergencies. Statistics were calculated with SPSS (IBM Corp. Released 2020. IBM SPSS Statistics for Windows, Version 27.0. Armonk, NY: IBM Corp).

Results

The survey collected a total of 415 answers from 67 countries: the majority come from the European (66.5%) and American regions (17.8%). Median age of participants was 43 (37–52) and 85.8% were men; 35.4% of participants declared a working experience > 6 years and 42.2% > 15 years. Most responders (69.4%) worked in tertiary level center or academic hospital and 29.4% were dedicated to emergency surgery for more than 50% of the time. Table 1 shows the complete details of participants.

Table 1.

Characteristics of survey respondents

Median (IQR) N %
Age 43 (37–52)
Sex
 Male 356 85.8
 Female 59 14.2
WHO Area
 African region 11 2.7
 American Region 74 17.8
 Southeast Asian Region 18 4.3
 European Region 276 66.5
 East Mediterranean Region 13 3.1
 West Pacific Region 23 5.5
Professional experience
 Resident 12 2.9
 0–5 years 81 19.5
 6–15 years 147 35.4
 > 15 years 175 42.2
Self-declared Expertise
 General Surgery 4 (3–5)
 Emergency and Trauma Surgery 4 (3–5)
 Colorectal Surgery 3 (2–4)
 Upper GI 3 (2–4)
 HPB 2 (1–4)
 Endocrine Surgery 2 (1–3)
 Bariatric Surgery 1 (0–2)
Kind of Hospital
 Private Hospital 104 25.1
 Public Hospital 311 74.9
Hospital Level
 First level – rural 21 5.1
 Second level 106 25.5
 Academic—referral hospital 288 69.4
presence of Emergency department 392 94.5
dedicated Emergency surgery unit 175 42.2
Time dedicated to emergency surgery
 0% 4 1.0
 1–25% 142 34.2
 26–50% 147 35.4
 > 50% 122 29.4

Table 2 shows the self-declared rate of use of laparoscopy and robotic in elective and emergency surgery: laparoscopy was used in major elective abdominal surgery in more than 50% of patients in half of participants (52%); in primary emergencies, only a quarter of participants (28,7%) declared the use of laparoscopy in more than 50% of patients. The personal confidence with minimally invasive techniques was the highest for appendectomy, cholecystectomy and abdominal exploration (median score 5) while it was lowest for necrosectomy in infected acute pancreatitis and esophageal perforations (median score 1). Complete results are shown in Figs. 1 and 2.

Table 2.

Self-declared rate of use of laparoscopy and robotic in elective and emergency surgery

N %
Self-declared use of minimally invasive surgery—laparoscopy
Laparoscopy in major elective surgery
 Never 18 4.3
 0–25% 80 19.3
 26–50% 101 24.3
 More than 50% 216 52.0
Laparoscopy in primary surgical emergencies
 Never 18 4.3
 0–25% 102 24.6
 26–50% 176 42.4
 More than 50% 119 28.7
Laparoscopy in secondary surgical emergencies
 Never 47 11.3
 0–25% 181 43.6
 26–50% 107 25.8
 More than 50% 80 19.3
Self-declared use of minimally invasive surgery—robotic
Robotic in major elective surgery
 Never 346 83.4
 0–25% 46 11.1
 26–50% 14 3.4
 More than 50% 9 2.2
Robotic in primary surgical emergencies
 Never 400 96.4
 0–25% 11 2.7
 26–50% 2 0.5
 More than 50% 2 0.5
Robotic in secondary surgical emergencies
 Never 398 95.9
 0–25% 14 3.4
 26–50% 1 0.2
 More than 50% 2 0.5

Fig. 1.

Fig. 1

Box-plot of self-declared personal confidence in MIS for primary emergencies; personal confidence is graded from 0 (no confidence) to 5 (maximum confidence)

Fig. 2.

Fig. 2

Box-plot of self-declared personal confidence in MIS for secondary emergencies; personal confidence is graded from 0 (no confidence) to 5 (maximum confidence)

Table 3 shows the results about the limiting factors in performing minimally invasive emergency surgery: technical skills, technical availability, nursing skills, night-time operation and estimated prolonged duration of surgery were not perceived as great limitations for grades 1 to 3 of surgical difficulty. Among patient-related limiting factors, the condition of shock (hemodynamic instability) was a limiting factor across all grades (median scores of 3 for grade 1 surgical difficulty and 4 for the remaining grades). Among the intraoperative limiting factors, the deterioration of clinical conditions during surgery and unclear visualization of the anatomy was the main reasons why minimally invasive surgery was abandoned (median scores of4 across all grades of severity). Detailed results are shown in Table 3.

Table 3.

Limiting factors in performing minimally invasive emergency surgery

Appendicitis, Cholecystitis
(Grade 1)
Perforation of Gastric and Duodenal Ulcer, Bowel Obstruction due to peritoneal adhesions
(Grade 2)
Colon resection for Hinchey 3 and 4 Acute Diverticulitis
(Grade 3)
Dehiscence of intestinal, colorectal, gastrointestinal anastomosis; bile leak after cholecystectomy, bile leak after liver resection, postoperative hemoperitoneum, postoperative intestinal obstruction
(Grade 4)
Median (IQR) Median (IQR) Median (IQR) Median (IQR)
Limiting factors
 Your own surgical skills 1 (0–4) 2 (0–3) 2 (1–4) 2 (1–4)
 Nursing skills 1 (0–3) 1 (0–3) 1 (0–3) 1 (0–3)
 Night-time operation 1 (0–3) 2 (0–3) 2 (1–4) 2 (1–4)
 Technology availability 2 (0–4) 2 (0–4) 2 (0–4) 2 (0–4)
 Estimated prolonged surgical duration 1 (0–3) 2 (1–3) 2 (1–4) 3 (1–4)
Patient-related limiting factors
 Shock condition 3 (1–5) 4 (2–5) 4 (3–5) 4 (3–5)
 Age 1 (0–3) 1 (0–3) 2 (0–3) 2 (0–3)
 ASA score 2 (1–3) 2 (1–4) 3 (1–4) 3 (1–4)
 APACHE score 2 (1–3) 2 (1–4) 3 (1–4) 3 (1–4)
 P-POSSUM 2 (1–3) 2 (1–3) 2 (1–4) 3 (1–4)
 ACSNSQUIP Surgical Risk 2 (1–3) 2 (1–3) 2 (1–4) 3 (1–4)
 Previous abdominal surgery 2 (1–4) 3 (1–4) 3 (2–4) 3 (2–4)
Intraoperative limiting factors
 Duration of the surgical procedure 2 (1–3) 2 (1–4) 3 (1–4) 3 (1–4)
 Bleeding 3 (2–4) 3 (1–4) 3 (2–4) 3 (1–4)
 Unclear/suboptimal visualization of anatomical structures 4 (2–5) 4 (2–5) 4 (2–5) 4 (3–5)
 Bowel perforation 3 (1–4) 3 (1–4) 3 (2–4) 3 (2–4)
 Intraoperative clinical deterioration 4 (2–5) 4 (2–5) 4 (3–5) 4 (3–5)

The multivariate ordinal logistic regression identified factors independently correlated with the use of laparoscopy in primary emergencies. A longer professional experience (OR 1.54, 95% CI 1.07–2.21 per additional year of surgical experience), the use of laparoscopy in major elective surgery (OR 4.13, 95% CI 3.11–5.47) and bariatric surgery expertise (OR 1.37, 95%CI 1.17–1.60) were significantly related to a higher use of laparoscopy in emergency surgery. Surgeons subspecializing in colorectal surgery (OR 0.77, 95%CI 0.62–0.95) and endocrine surgery (OR 0.75, 95%CI 0.63–0.90) used less laparoscopy in emergency procedures, while those subspecializing in bariatric surgery (OR 1.37, 95%CI 1.17–1.60) used more laparoscopy in emergency procedures.

Discussion

The results of the present survey show that the diffusion of minimally invasive techniques in emergency surgery is still quite limited. The confidence of surgeon in minimally invasive techniques is higher for simple surgical interventions as appendectomy, cholecystectomy and abdominal exploration but decreases progressively with the increasing difficulty of surgery. The characteristics related to a higher use of laparoscopy in primary emergencies are longer personal surgical experience, extensive use of laparoscopy in major elective abdominal surgery, and bariatric surgical expertise.

According to the literature, laparoscopy is used in less than 20% of major emergency operations: the results of a recent research study from the National Emergency Laparotomy Audit (NELA) of England and Wales described that only 14.6% of cases were approached by laparoscopy with a conversion rate of 46.4% [15]. A research study from the USA reported an higher proportion of minimally invasive surgery in emergency general surgery (69.4%), but the majority of interventions were appendectomy and cholecystectomy: the proportion of major abdominal surgery in emergency performed with minimally invasive techniques was less than 20% [18]. Regarding major colorectal emergency surgery, several reports describe feasibility and safety; moreover, the promotion of the use of MIS is proved by lot of didactic articles [1921]; however, in a large report, the proportion of patients treated with MIS was only 5.66% [19]. Data available in literature and the results of the present survey highlight an important need to improve the safe and effective use of minimally invasive techniques in emergency surgery.

Among the characteristics of surgeons who answered to the survey the main factors related to a higher and more significant diffusion of laparoscopy in emergency surgery were the longer personal experience and the use of laparoscopy in elective surgery: these data highlight the important role of personal skills in increasing the use of minimally invasive techniques. Similarly, expertise in bariatric surgery and prevalent use of laparoscopy in major abdominal surgery were directly related to the use of laparoscopy in emergency surgery. Literature data and the results of our survey suggest that there is plenty of room for improvement in the safe and effective use and the diffusion of minimally invasive techniques also in emergency surgery. Dedicated training in emergency laparoscopic surgery and initiatives of continuing professional development may be beneficial in order to be able to offer the advantages of mini-invasive approaches to a larger number of patients also in emergency.

Moreover, our data offer the opportunity to reflect on which is the best organizational model for emergency surgery.

A surgeon with more developed skills in elective surgery and more experienced in elective laparoscopic surgery is more prone to use laparoscopic surgery also in primary emergencies. On the contrary, emergency and Trauma surgery usually requires dedicated teams with specific skills [22, 23] that may not include minimally invasive techniques.

Only 29.4% of surgeons who answered the survey declared to be dedicated to emergency surgery for more than 50% of their time. However, a longer time dedicated to emergency surgery was not significantly related to a lower use of laparoscopy in primary emergency at the multivariate analysis, showing a very complex interaction with several other characteristics as personal experience and personal expertise. Almost exclusive emergency surgery practice is not associated with lack of confidence with MIS, but extensive elective laparoscopic experience is for sure a positive factor.

Despite these considerations, data about the limiting factors to the use of minimally invasive techniques in emergency surgery show that a surgeons' perception of their surgical skills was not considered to be a limiting factor (Table 3). Similarly, the night-time, the nursing skills and the technology availability do not seem to be major limiting factors. This may reflect the intrinsic ability of surgeons to adapt to the circumstances and their strong commitment to improvement in any environmental situation. Among patients’ conditions, the only factors that seem to be limiting factors in the use of minimally invasive surgery in emergency surgery is the shock condition, while age and high predicted morbidity and mortality according to the most common clinical scores as ASA, P-POSSUM and APACHE II are perceived as important limiting factors for difficult surgeries (median score 3).

The results of the present survey should be interpreted with caution at the light of some considerations. First of all, the relatively small number of respondents represents a highly selected population of surgeons; in fact, most respondents works in academic and tertiary hospitals mostly from the European and the American WHO regions. Moreover, the majority of respondents are surgeons with a particular interest in emergency and trauma surgeon with an active participation or an affiliation to a scientific society. It should be also noticed that the survey was focused mostly on abdominal surgery and no considerations can be drawn about other surgical specialities (Table 4).

Table 4.

Multivariate ordinal regression on use of MIS in primary emergencies

Variable OR 95% confidence interval p value
Lower Upper
Sex
 Male 1
 Female 0.715 0.400 1.277 0.257
Age (+ 1) 0.982 0.952 1.012 0.238
WHO Region
 West Pacific Region 1.789 0.413 7.738 0.437
 East Mediterranean Region 1.299 0.249 6.775 0.756
 Europe 3.078 0.875 10.826 0.080
 Southeast Asian Region 0.906 0.181 4.522 0.904
 American Region 3.409 0.921 12.622 0.066
 African Region 1
Kind of Hospital
 Public hospital 1
 Private Hospital 1.193 0.740 1.924 0.470
Hospital Level
 First level hospital 0.524 0.208 1.320 0.171
 Second level hospital 0.826 0.319 2.138 0.693
 Academic Hospital 1
Presence of Emergency department 1.401 0.601 3.263 0.435
Presence of Acute care service /unit 0.795 0.508 1.245 0.316
Years of professional experience (+ 1) 1.544 1.074 2.219 0.019
Personal expertise
 General surgery 1.193 0.878 1.621 0.258
 Emergency and trauma surgery 1.130 0.885 1.442 0.327
Colorectal expertise 0.770 0.621 0.955 0.017
 Upper GI 1.060 0.850 1.323 0.604
 HPB 0.997 0.833 1.194 0.978
 Endocrine surgery 0.756 0.636 0.900 0.002
 Bariatric surgery 1.370 1.171 1.603 < 0.001
Use of laparoscopy in elective surgery 4.130 3.116 5.474 < 0.001
Time dedicated to emergency surgery 1.256 0.951 1.658 0.108

Significant variables are marked in bold

For these reasons—this selection bias and the relatively small number of participants from developing countries and smaller hospitals—the present survey may not be an accurate description of the real-world uptake of minimally invasive surgery techniques in emergency surgery. The WHO region and technology availability were not significantly related to an increased or decreased use of laparoscopy in emergency surgery; however, the confidence intervals were very wide indicating the uncertainty about this issue. This suggests the need for further research in order to describe the role of availability of technology in smaller hospitals.

Conclusions

In conclusion, the present survey shows that minimally invasive techniques in emergency surgery are still underutilized by a large proportion of surgeons. Among the factors related to a larger adoption of minimally invasive techniques, the most important are the adoption of laparoscopy in elective surgery and increased surgical experience. In order to improve the uptake of minimally invasive technique in the emergency setting, greater focus should be placed on the development of dedicated training in laparoscopy.

Supplementary Information

13017_2022_419_MOESM1_ESM.pdf (189.8KB, pdf)

Additional file 1: Survey's questionnaire.

13017_2022_419_MOESM2_ESM.docx (40KB, docx)

Additional file 2: Members of the WSES MIS Consortia.

Acknowledgements

WSES-MIS consortia: See Additional file 2.

Abbreviations

MIS

Minimally Invasive Surgery

WSES

World Society of Emergency Surgery

WHO

World Health Organization

ASA

American Association of Anesthesiology

Authors' contributions

MC, MP, FC, Fco ideated the research and study design. MC and MP analyzed data. MC, MP, FAZ, FC, NA, KG, YK, WB, GT, GB, LA, MS, WB and Fco drafted the manuscript. All the authors read and approved the final version of the manuscript.

Funding

No funding.

Availability of data and materials

Data are available on request to the corresponding author.

Declarations

Consent for publication

No consent was needed for the publication.

Competing interests

All the authors declare to have no conflict of interest.

Footnotes

Publisher's Note

Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.

Marco Ceresoli and Michele Pisano contributed equally to this work

Contributor Information

Marco Ceresoli, Email: marco.ceresoli89@gmail.com.

WSES MIS working group:

Andreas Fette, Andreas Hecker, Andrey Litvin, Antonello Forgione, Ari Leppaniemi, Belinda De Simone, Boris Sakakushev, Casey R. Palmatier, Cino Bendinelli, Dimitris Damascos, Edoardo Picetti, Edward Tan, Elia Poiasina, Emmanouil Pikoulis, Enrico Cicuttin, Ernest E. Moore, George Velmahos, Gustavo Fraga, Harry Van Goor, Ian Civil, Imtiz Wani, Isidoro Di Carlo, Joseph Galante, Kjetil Søreide, Luca Degrate, Luigi Zorcolo, Marc De Moya, Marco Braga, Marco Cereda, Micheal Sugrue, Mircea Chirica, Nicola De Angelis, Philip F. Stahel, Rao Ivatury, Richard Ten Broek, Salomone Di Saverio, Solomon Gurmu Beka, Stefano Magnone, Yunfeng Cui, Zsolt J. Balogh, Micheal Dennis Kelly, and Kenji Inaba

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Associated Data

This section collects any data citations, data availability statements, or supplementary materials included in this article.

Supplementary Materials

13017_2022_419_MOESM1_ESM.pdf (189.8KB, pdf)

Additional file 1: Survey's questionnaire.

13017_2022_419_MOESM2_ESM.docx (40KB, docx)

Additional file 2: Members of the WSES MIS Consortia.

Data Availability Statement

Data are available on request to the corresponding author.


Articles from World Journal of Emergency Surgery : WJES are provided here courtesy of BMC

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