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Original paper

Changing patterns in the surgical treatment of perforated duodenal ulcer – single centre experience

Piotr Budzyński
,
Michał Pędziwiatr
,
Agata Grzesiak-Kuik
,
Michał Natkaniec
,
Piotr Major
,
Maciej Matłok
,
Maciej Stanek
,
Mateusz Wierdak
,
Marcin Migaczewski
,
Magdalena Pisarska
,
Andrzej Budzyński

Videosurgery Miniinv 2015; 10 (3): 430–436
Online publish date: 2015/09/11
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Introduction

Although in the last two decades the global prevalence of uncomplicated ulcer disease has declined, its acute complications in the form of ulcer perforation (perforated peptic ulcer – PPU), being the first disease symptom in some patients, are still the main reason for emergency operations [1, 2]. Potentially, all patients with ulcer disease are at risk of this complication, and it is related to a high mortality rate that can reach even 5.8–40% [3–5]. Although the surgical treatment in these patients demonstrating symptoms of diffuse peritonitis is the method of choice, introduction of effective pharmacotherapy (proton pump inhibitors, Helicobacter pylori eradication) has changed the surgical strategy [6, 7]. While previously the gold standard usually included repair of the perforation and a simultaneous radical anti-ulcer procedure (vagotomy or distal gastric resection), nowadays less extensive procedures are chosen more frequently, due to effective supplementary postoperative pharmacotherapy. This coincided with introduction of minimally invasive techniques. In 1990, Nathanson et al. were the first to describe the use of laparoscopy for PPU [8]. The initial results, as well as further randomised clinical trials, showed a number of benefits of minimally invasive surgery, although in most cases no radical anti-ulcer procedures were performed simultaneously [9–12]. In our department, the first laparoscopic procedures (cholecystectomy, hernia repair, perforated ulcer repair) were performed in 1992. The rule of starting with laparoscopy in cases of PPU was introduced in 1999.

Aim

This paper aims to present our experience in the treatment of perforated duodenal ulcer in two periods, by comparing open radical anti-ulcer procedures with laparoscopy supplemented with pharmacotherapy.

Material and methods

The analysis covered patients operated on for perforated duodenal ulcer. In the period before common use of proton pump inhibitors (PPI), at our institution the method of choice was Heineke-Mikulicz pyloroplasty combined with truncal vagotomy.
In 1999, a rule to start the procedure with laparoscopy was adopted for suspected PPU. The ulcer was closed with single stitches and an omentoplasty, as in the Graham patch technique. This coincided with introduction of PPI into general practice with additional H. pylori eradication in cases of infection confirmed with the urease test on intraoperatively collected biopsies. Therefore, a decision was made to abandon vagotomy as a routine procedure.
Two groups of patients were compared: group 1 – patients treated with a traditional method (pyloroplasty + vagotomy) before introduction of PPI, group 2 – patients operated on with the laparoscopic technique supplemented with PPI therapy.
All patients were included in the analysed groups, regardless of their clinical status directly before the surgery. For obvious reasons, patients in whom peptic ulcer perforation was not suspected in pre-surgery examinations and those originally submitted to an emergency laparotomy were excluded from the analysis in the second period.
Group 1 included patients operated on in the period 1980–1994. Group 2 included patients treated in the period 2000–2014. Furthermore, patients treated during the 5 years (1995–1999) between the analysed periods were excluded, due to inconsistency in surgical techniques and the laparoscopy learning curve.
Groups were compared in terms of patients’ demographic structure, operative time, complication rate, mortality, necessity and reasons for using a procedure other than the standard one (need for gastric resection or other procedure in group 1, or conversion to open surgery in group 2).
Two hundred forty-five patients (194 men, 51 women) in total were enrolled in group 1. The number of operations performed in successive years is shown in Figure 1.
Group 2 included 106 patients in total: 68 men and 38 women. The number of operations performed in successive years is shown in Figure 2. Demographic characteristics of both groups are presented in Table I.

Statistical analysis

A statistical analysis was performed with the StatSoft Statistica v.10 package. Qualitative variables were analysed with the 2 independence test. For quantitative variables with the normal distribution, the Student t-test was used; and when other than the normal distribution was found in the groups, the statistical significance of factors was assessed with the Mann-Whitney test. Results with p < 0.05 were considered statistically significant.

Results

It was observed that in group 2 the percentage of women was significantly higher than in group 1 (p = 0.0029). No significant differences were observed for age (p = 0.5412). In both periods, women were older than men by 10 years on average (p = 0.0102, p = 0.0117).
In group 1, pyloroplasty with truncal vagotomy, the method of choice in that period, was performed in 171 (69.8%) patients. In the remaining 72 (30.2%) patients another procedure was performed: simple ulcer closure in 39 (15.9%) patients; pyloroplasty without vagotomy in 17 (6.9%) patients; distal gastric resection with vagotomy in 15 (6.2%) patients; and resection without vagotomy in 3 (1.2%) patients.
In group 2, laparoscopic PPU closure was performed in 98 (92.4%) patients. Conversion was necessary in 8 (7.6%) patients. In 4 patients conversion was needed due to advanced peritonitis with intraperitoneal abscesses; in 3 cases the perforation diameter did not allow for safe laparoscopic repair, and in 1 patient the perforation site was not localized during the laparoscopic stage.
The mean operative time in group 1 was 62 min (40–140 min) and in group 2 – 83 min (40–130 min). This difference is statistically significant (p < 0.0001).
Complications were noted in 57 (23.3%) patients in group 1 and 14 (13.5%) patients in group 2 (p = 0.0312). Detailed information on complications is presented in Table II.
In group 1, reoperation was necessary in 13 (5.3%) cases (intraperitoneal abscesses in 6 patients, leakage in 5 patients, and abdominal wound dehiscence in 2 patients). In group 2, 5 (4.7%) patients required reoperation (leakage in 3 patients, intraperitoneal abscesses in 2 patients). No significant differences were found between the two groups for the number of reoperations (p = 0.8179).
In group 1, 25 (10.2%) patients died within the first 30 days after surgery. Three (2.8%) patients died in group 2. These differences are statistically significant (p < 0.0192).
In group 1, median hospital stay was 9 days (5–28 days) and differed significantly from group 2 (6 days, 4–26 days) (p < 0.0001).

Discussion

This study summarizes the changes in the strategy of treatment of PPU that occurred at our unit over the last 35 years. During that time, radical anti-ulcer operations were practically abandoned, and open procedures were nearly completely replaced with laparoscopy. However, we observed that this was a gradual process (therefore patients treated during 5 years of the learning curve were excluded from the analysis). Introduction of minimally invasive surgery into general practice can pose some problems. The study of Sommer published in 2010 can be an example here. He reported that in Denmark only 6% of PPU patients were treated laparoscopically [13]. This resulted from insufficient training of personnel, so laparoscopy was unavailable in many hospitals during emergency duty. Laparoscopic operations are considered to be technically more difficult than open procedures. In our institute, it took several years to train all specialists in this surgical technique. It should be noted that currently the prevalence of peptic ulcer perforation in developed countries is relatively low, being ca. 5 cases per 100 000 inhabitants per annum; thus learning of this new surgical technique is significantly slowed down [3]. Additionally, we introduced laparoscopy in PPU repair when only basic minimally invasive operations (cholecystectomy, appendectomy, or inguinal hernia repair) were performed at our institution. Certainly, nowadays independence in operations of this type would be easier to achieve (a full range of laparoscopic procedures in the abdominal cavity is performed, including bariatric surgery and extensive oncologic procedures in the upper part of the abdominal cavity, such as laparoscopic gastrectomy, hemihepatectomy, and pancreaticoduodenectomy).
According to some authors, a serious condition of a patient on admittance and symptoms of shock are contraindications to the laparoscopic surgery due to a longer duration of the procedure, the adverse influence of pneumoperitoneum on the renal function, and increased bacterial translocation in patients with peritonitis [2, 14–17]. However, it should be asked whether this view is actually clinically justified, as during the surgery death occurs relatively rarely, even in patients in shock or after its stabilisation. In prospective randomized trials it was found that laparoscopic surgery is only 18 min longer, on average, than traditional surgery [4]. In our material this difference was 21 min and was statistically significant; however, smaller injury compensated for that difference. In patients with diffuse peritonitis this aspect seems to be crucial. In our unit a rule for starting with laparoscopy regardless of the patient’s condition and duration of symptoms was adopted. It is also known that disease duration exceeding 24 h (diffuse fibrinopurulent peritonitis) is not a contraindication to laparoscopy and satisfactory results can be achieved [15, 18, 19].
It is worth emphasising that the surgery for PPU may require intraoperative change of the procedure that was initially planned. In group 1, the procedure was changed from the routine one (pyloroplasty with vagotomy) in over 30% of cases. This decision resulted from a need for gastric resection due to a large perforation size, a suspected malignancy, or the ulcer location. In the remaining cases, vagotomy was not performed because of the serious condition of the patient or technical problems with access to the abdominal part of the oesophagus.
In group 2, laparoscopy was performed in 98 (92.4%) patients. In 8 (7.6%) patients conversion was necessary due to advanced peritonitis with intraperitoneal abscesses, or a perforation size requiring pyloroplasty. It was performed in 6 of them. Furthermore, distal gastric resection was considered necessary in 2 patients. The conversion rate at the level of 7.4% is slightly below the one reported by other authors (even up to 28.5%), and possibly results from the fact that the analysis covered patients from the period when the personnel already had significant experience in laparoscopic PPU repair [2]. In the analysis by Thorsen, this was a reason for a significant drop in the number of conversions observed within several years [20].
Definitely, the best tool for comparing the two surgery methods is the analysis of complications and mortality rates in the perioperative period, and the length of the hospital stay. In the present material, the early complication rate is significantly lower after laparoscopy. In the review by Bertleff, covering data from 56 studies, the observed complication rate in the group of patients operated on with minimally invasive technique was nearly two times lower (14.3% vs. 26.9%) [21]. Some reports indicate a higher risk of leakage after laparoscopy and in consequence a need for reoperation [5, 8, 9]. However, a more detailed analysis of those results shows that leakage occurred more often in patients treated with the sutureless technique, and without omentoplasty. A correct assessment of the perforation size is also important. In our opinion, for perforations involving over 1/4 of the duodenal bulb circumference, conversion and repair by pyloroplasty appears to be a safer approach.
The mortality rate analysis also shows the advantage of laparoscopy. In our material, the mortality rate was 10.2% in group 1 and 2.8% in group 2. Data on the mortality rate vary, depending on the studied group; it ranges between 5 and 20% [21]. In all analyses, a reduction in the mortality rate was observed in the group of patients operated on laparoscopically [2, 9, 20–22]. In our material, a relatively large difference in the mortality rates between groups may result from other factors that changed during the 35 years covered by the analysis. The perioperative care, including intensive care, improved. More sensitive imaging techniques (computed tomography) are commonly used, definitely improving preoperative diagnostics. Use of minimally invasive techniques, regardless of the surgery type, facilitates full recovery by reducing pain, and thus allowing earlier mobilisation and better tolerance of an oral diet. Therefore, it is not surprising that in all analyses, including ours, a reduction in the length of hospital stay was noted after laparoscopic PPU repair [3–5, 10].
Another aspect in the discussion on effective treatment for ulcer disease complications is a decision to perform vagotomy (selective or truncal). Due to widespread use of PPI in the last 20 years, a decision was made at our institution to abandon this procedure as a routine method. In our opinion, the only indication justifying this approach is the group of patients of low social status (homeless, alcoholics), as there is a risk they will not follow recommendations for postoperative anti-ulcer treatment. In our, and in other authors’ opinion, vagotomy can also be safely performed with the use of laparoscopy [18, 23, 24].

Conclusions

Within the last 30 years, significant changes in treatment of PPU have occurred, mainly related to abandoning routine radical anti-ulcer procedures and replacing the open technique with minimally invasive surgery. Thus it was possible to improve treatment results, by reducing complication and mortality rates, and shortening the length of hospital stay. Although the laparoscopic operation is longer, it improves outcomes. In our opinion, in each patient with suspected peptic ulcer perforation, laparoscopy should be the method of choice, and a decision about conversion can be made when any intraoperative difficulties occur. Training provided to the entire team and gaining experience in minimally invasive operations are also important, because access to laparoscopy should be ensured 24/7 due to the need for emergency surgery in this disease.

Acknowledgments

The publication of this paper was supported by the Faculty of Medicine, Jagiellonian University Medical College, Leading National Research Centre (KNOW) 2012–2017.

Conflict of interest

The authors declare no conflict of interest.

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Received: 26.02.2015, accepted: 8.04.2015.
Copyright: © 2015 Fundacja Videochirurgii This is an Open Access article distributed under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) License (http://creativecommons.org/licenses/by-nc-sa/4.0/), allowing third parties to copy and redistribute the material in any medium or format and to remix, transform, and build upon the material, provided the original work is properly cited and states its license.
  
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