Acute appendicitis: proposal of a new comprehensive grading system based on clinical, imaging and laparoscopic findings

Incidental Appendico-Ileal Fistula in a Patient With Adhesive Intestinal Obstruction: A Case Report

A fistulous communication between the appendix and any viscus is rare. Such fistula is most often acquired due to recurrent appendicitis, cystic fibrosis, Crohn's disease, tuberculosis, and malignancy. Here in, we report a rare case of an appendico-ileal fistula incidentally detected during laparotomy for adhesive small bowel obstruction. The fistula was divided, the ileal opening was sutured, and appendectomy was performed. Postoperative recovery was uneventful, with no evidence of malignancy, tuberculosis, or inflammatory bowel disease on the histopathological examination of the appendix.

Risk of Conversion from Laparoscopic Appendectomy to Open Surgery: The Role of Clinical and Radiological Factors in Prediction

Introduction: Laparoscopic appendectomy is the most preferred surgical method in the treatment of acute appendicitis. In our study, we aim to determine the clinical and radiological factors affecting conversion from laparoscopic appendectomy to open surgery. Materials and Methods: All patients older than 18 years, who were operated on with the diagnosis of acute appendicitis in the General Surgery clinic of Prof. Dr. İlhan Varank Training and Research hospital between January 2020 and January 2022, were included in the study. The data consisting of clinical, laboratory, and radiological (computed tomography) findings of the patients were evaluated retrospectively. The patients were divided into two groups as those whose surgery was completed laparoscopically (Group 1) and those converted from laparoscopic appendectomy to open surgery (Group 2). The risk of conversion to open surgery was analyzed by binary logistic regression analysis as univariate and multivariate models. Results: Appendectomy was performed in 831 patients within the specified period. The surgery of 31 (3.73%) patients started laparoscopically; however, they were completed by converting to open surgery. Multivariable analysis showed that the risk of conversion to open surgery increased with leukocyte count, Alvarado score and with the presence of periappendiceal fluid and lymphadenopathy on CT. Conclusion: Our study shows that patients with high risk of returning to open surgery can be identified preoperatively with the risk analysis method in which clinical, laboratory, and radiological findings are evaluated together. We conclude that, starting the operation of these patients with the open technique from the beginning will prevent unnecessary expenditures and reduce morbidities.

Interval appendectomy as a safe and feasible treatment approach after conservative treatment for appendicitis with abscess: a retrospective, single-center cohort study

Emergency appendectomy (EA) is the gold standard management for acute appendicitis (AA). However, whether EA or interval appendectomy (IA) after conservative treatment is the optimal approach in AA with abscess remains controversial. This study compared IA and EA in patients presenting with AA accompanied by abscess. This was a retrospective single-center study including 446 consecutive patients undergoing appendectomy between April 2009 and March 2023. AA with abscess was defined as a pericecal abscess observed by computed tomography or abdominal ultrasonography, and patients with signs of peritoneal irritation were excluded. Perioperative outcomes were compared between the patients who directly underwent EA and those who underwent IA after conservative treatment. Among 42 patients (9.4%) with AA and abscess, 34 and 8 patients underwent IA and EA, respectively. The rates of ileocecal resection and postoperative complications were lower in the IA group than in the EA group (3% vs. 50%, P < 0.001 and 9% vs. 75%, P < 0.001, respectively). Colonoscopy before IA was performed in 16 of the 17 patients aged ≥ 40 years in the IA group, and one patient underwent ileocecal resection because of suspicious neoplasm in the root of the appendix. IA after conservative treatment might be considered as the useful therapeutic option for AA with abscess. Colonoscopy during the waiting period between the initial diagnosis and IA should be considered in patients aged ≥ 40 years who may have malignant changes. Implementing IA as a first-line treatment will be beneficial to both patients and healthcare providers.

Usefulness of serum sodium levels as a novel marker for predicting acute appendicitis severity: a retrospective cohort study

BACKGROUND

Early and accurate preoperative diagnosis of complicated appendicitis mandates the identification of new markers. The aim of this study is to determine whether preoperative serum sodium levels are useful for predicting the severity of acute appendicitis.

METHODS

We retrospectively analyzed 475 patients who underwent emergency appendectomies between January 2018 and February 2023 in a general hospital in Brazil. The patients were divided into 2 groups: complicated (n = 254) and uncomplicated (n = 221). Hyponatremia was defined as serum sodium levels < 136 mEq/L. The primary outcome was to evaluate if hyponatremia is associated with complicated appendicitis.

RESULTS

The patients had a median age of 22 years, and the median serum sodium level was 137 mEq/L in patients with complicated appendicitis and 139 mEq/L in uncomplicated appendicitis (P < 0.001). The analysis of the receiver operating characteristic curve used as the best cutoff value of serum sodium of 136 mEq/L with a sensitivity of 45.7%, specificity of 86.4%, positive predictive value of 79.5%, and negative predictive value of 58.1% for the diagnosis of complicated AA. Of the 254 patients with complicated appendicitis, 84 (33.1%) had serum sodium levels below 136 mEq/L, while only 12 (5.4%) patients with uncomplicated appendicitis had values ​​below this cutoff. Patients with hyponatremia were 5 times more likely to develop complicated appendicitis. (odds ratio: 5.35; 95% confidence interval: 3.39-8.45) CONCLUSIONS: Preoperative serum sodium levels are a useful tool for predicting the severity of acute appendicitis. Due to its low cost and wide availability, it has become an extremely relevant marker.

A new, simple marker for predicting complicated appendicitis in patients with normal white blood cell count indicator; LUC

BACKGROUND

The aim of this study was to investigate the ability of a new marker that could be easily obtained to differentiate between complicated and uncomplicated appendicitis in a patients with a white blood cell (WBC) count within the normal range.

METHODS

The patients who underwent surgery with histopathologically proven acute appendicitis (AA) between January 2021 and October 2022 were evaluated retrospectively. Patients were classified into two groups as uncomplicated and complicated appendicitis, based on the surgical and histopathological findings. Groups were compared in terms of laboratory parameters at the time of hospital admission.

RESULTS

During the study period, 2589 patients underwent an appendectomy, among these 612 patients who had a WBC count within the normal range at the time of admission were analyzed. Uncomplicated appendicitis was detected in 79.6% of the patients and complicated appendicitis in 20.4%. Neutrophil%, neutrophil-to-lymphocyte ratio, C-reactive protein, and total bilirubin levels were significantly higher, whereas lymphocyte%, lymphocyte count, lymphocyte-to-monocyte ratio, sodium levels, and large unstained cells (LUC)% were significantly lower in patients with complicated appendicitis. Multiple logistic regression analysis revealed that lower LUC% (Odds Ratio [OR]: 0.45; 95% Confidence Intervals [CI]: 1.08-2.09; P=0.01) and higher total bilirubin levels (OR: 1.50; 95% CI: 1.08-2.09; P=0.01) were independent risk factors for complicated appendicitis.

CONCLUSION

In patients with a diagnosis of AA with a normal WBC value, LUC% obtained from the complete blood count can be used as a new parameter predicting the diagnosis of complicated appendicitis.

Appendiceal stump closure in laparoscopic appendectomy: one endoloop vs. two endoloops vs. two endoclips-does it matter?

PURPOSE

Appendiceal stump leak rate after laparoscopic appendectomy is extremely low. Various methods are used to close the appendiceal stump. This study aimed to compare the outcome of three appendiceal stump closure methods.

METHODS

A retrospective study comparing stump closure methods and postoperative outcomes was conducted from January 2018 to June 2020. Patient data included demographics, pre-operative data, surgical technique, findings, and postoperative complications.

RESULTS

Out of 1021 appendectomy patients, 733 underwent laparoscopic appendectomy for acute appendicitis utilizing one of the three compared appendiceal stump closure methods. Consequently, 360 appendixes were ligated with one endoloop (1EL group), 300 appendixes had two endoloops (2EL group), and 73 appendixes were ligated with two endoclips (2EC group). All groups used a LigaSure for resection. The rate of postoperative intra-abdominal abscess was 1% (4 patients) in 1EL group vs. 1% (3 patients) in 2EL group vs. none in 2EC group (p = 0.43). There were no reported appendiceal stump leaks. Overall complication rates were 4% (14 patients), 3% (9 patients), and 0 (p = 0.15), and the mean operative length was 43 ± 21, 54 ± 22, and 43 ± 20 mins for the 1EL, 2EL, and 2EC, respectively (p < 0.01). Average cost of one endoloop is 110$, and one endoclip cartridge is 180$.

CONCLUSIONS

None of the methods were found clinically superior over the others. Considering the low and mild complication rate, it appears reasonable to prefer one method simply by cost. The use of a single endoloop may result in substantial cost reduction. Medical centers may advise surgeons to use a single-endoloop technique.

The Course and Surgical Treatment of Acute Appendicitis during the First and Second Wave of the COVID-19 Pandemic: A Retrospective Analysis in University Affiliated Hospital in Latvia

Background and Objectives: Acute appendicitis is the most common abdominal emergency requiring surgery and it has an estimated lifetime risk of 6.7 to 8.6%. The COVID-19 pandemic has transformed medical care worldwide, influencing diagnostic tactics, treatment modalities and outcomes. Our study aims to compare and analyze management of acute appendicitis before and during the first and second waves of the pandemic. Materials and Methods: Patients suffering acute appendicitis were enrolled retrospectively in a single-center study for a 10-month period before the pandemic (pre-COVID-19 period: 1 March to 31 December 2019) and during the pandemic (COVID-19 period: 1 March to 31 December 2020). The total number of patients, disease severity, diagnostic methods, complications, length of hospitalization and outcomes were analyzed. Results: A total number of 863 patients were included, 454 patients in the pre-COVID-19 period and 409 patients in the COVID-19 period. Compared to the pre-COVID-19 period, the number of complicated appendicitis increased in the COVID-19 period (24.4% to 37.2%; p < 0.001). The proportion of laparoscopic appendectomies increased during the COVID-19 period but did not show statistically significant differences between periods. In both time periods, we found that open technique was the chosen surgical approach more frequently in elderly patients (p < 0.001). Generalized peritonitis was significantly more common during the COVID-19 period (3.5% vs. 6.1%, p < 0.001). The postoperative course of patients was similar in the pre-COVID-19 period and during the COVID-19 period, with no significant differences in ICU admissions, overall hospital stay or morbidity. Conclusions: The COVID-19 pandemic has led to a significant increase in complicated forms of acute appendicitis; however, no significant impact was observed in terms of diagnostic or treatment approach.

Assessing the perioperative timeline and incidence of postoperative complications to optimize care for pediatric surgery patients from Northern Quebec

BACKGROUND

Patients from remote communities often require relocation to urban centres to receive surgical care. This study examines the timeline of care for pediatric surgical patients presenting to the Montreal Children's Hospital from two remote communities in Quebec serving largely Indigenous populations. It aims to identify factors contributing to length of stay, including the incidence of post-operative complications and risk factors for complications.

METHODOLOGY

This was a single-center retrospective study of children from Nunavik and Terres-Cries-de-la-Baie-James who underwent general or thoracic surgery between 2011 and 2020. Patient characteristics, including risk factors for complications, and any postoperative complications were summarized descriptively. The timeline of the patient's stay from consultation to post-operative follow-up was determined through chart review, identifying the dates and modality of post-operative follow up.

RESULTS

There were 271 eligible cases, including 213 urgent (79.8%) and 54 elective (20.2%) procedures. In total, four patients (1.5%) experienced a postoperative complication at follow-up. All complications occurred among patients who underwent urgent surgery. Three complications (75%) were surgical site infections, managed conservatively. Among patients who underwent elective surgery, 20% waited over 5 days prior to operation The average length of time between discharge and follow-up was one week, regardless of surgical urgency. This was the main contributor to the total time in Montreal.

CONCLUSION

Postoperative complications identified at one-week follow-up were rare and only seen following urgent surgery, suggesting that telemedicine can safely replace many in-person post-surgical follow up visits. In addition, there is room to improve wait times for those from remote communities by prioritizing displaced patients where possible.

[Factors associated with prolonged hospital-stay after appendectomy during the SARS-CoV-2 pandemic]

OBJECTIVE

To determine the factors associated with prolonged hospital-stay after appendectomy in SARS-CoV-2 pandemic.

MATERIAL AND METHODS

A retrospective observational cohort study included 420 patients after surgery for acute appendicitis between March 2019 and March 2020, April 2020 and April 2021. There were 336 patients before the SARS-COV-2 pandemic, and 84 ones underwent surgery during the pandemic.

RESULTS

Incidence of prolonged hospital stay was 15% and 26%, respectively (RR 1.76). RR is more than 1 and assumes SARS-CoV-2 infection as a risk factor.

CONCLUSION

There is an association between SARS-CoV-2 infection and prolonged hospital-stay after surgery for acute appendicitis (RR 1.76).

Outpatient management of acute uncomplicated appendicitis after laparoscopic appendectomy: a randomized controlled trial

OBJECTIVE

To confirm the safety and efficacy of outpatient management of laparoscopic appendectomy, with an enhanced recovery after surgery (ERAS) protocol, in adult patients with uncomplicated acute appendicitis. Outpatient laparoscopic appendectomy is feasible and secure in selected patients in observational studies. The benefits include reduced length of stay (LOS) and postoperative complications. This is the first randomized controlled trial of outpatient management following ERAS protocol.

METHODS

Patients admitted from the emergency department with acute appendicitis were randomized into one of two groups: standard care within the hospital (HG) or the outpatient group (OG). An ERAS protocol was followed for both groups. Patients in the HG were admitted to the surgical ward. Patients in the OG were referred to the day-surgery unit. The primary endpoint was the length of stay.

RESULTS

Ninety-seven patients were included: 49 in the OG and 48 in the HG. LOS was significantly shorter in the OG (mean 8.82 h) than in the HG (mean 43.53 h), p < 0.001. There was no difference in readmission rates (p = 0.320); we observed only one readmission in the OG. No further emergency consultations or complications were observed. The cost saving was $516.52/patient as a result of the intervention.

CONCLUSION

Outpatient management of appendectomy is safe and feasible procedure in selected patients. This approach could become the standard of care for patients with uncomplicated appendicitis, showing fewer complications, lower LOS and cost.

TRIAL REGISTRATION

Registration: www.

CLINICALTRIALS

gov (NCT05401188) Clinical Trial ID: NCT05401188.

The Prognostic Value of Ultrasound Findings in Preoperatively Distinguishing between Uncomplicated and Complicated Types of Pediatric Acute Appendicitis Based on Correlation with Intraoperative and Histopathological Findings

OBJECTIVE

This study compares the preoperative ultrasound findings of all children with a clinical picture of acute appendicitis on the basis of intraoperative and histopathological findings to assess the feasibility of this approach in preoperatively distinguishing between uncomplicated and complicated cases.

METHODS

This retrospective study includes 224 pediatric patients who underwent ultrasound prior to appendectomy at our institution between January 2016 and February 2022. Logistic regression analysis was used to investigate the association between sonographic and intraoperative histopathological findings.

RESULTS

Of the 224 participants, 61.1% were intraoperatively diagnosed with uncomplicated appendicitis (59.8% male). Multivariate logistic regression analysis revealed that patients with a higher appendiceal diameter, presence of appendicolith, and peritonitis were more likely to suffer from complicated appendicitis. Finally, the common anatomical position of the appendix and an appendiceal diameter greater than 6 mm had the highest sensitivity (94.6% and 94.5%, respectively) for predicting complicated appendicitis, with the most specific (99.3%) sonographic finding being the existence of an abscess.

CONCLUSIONS

Preoperative abdominal ultrasound in children with a clinical diagnosis of acute appendicitis can distinguish between uncomplicated and complicated appendicitis in most cases of pediatric appendicitis. A higher appendiceal diameter, the presence of appendicolith, and peritonitis are parameters noted by ultrasound that strongly predict complicated appendicitis.

Laparoscopic appendectomy for complicated appendicitis in children: does the post-operative peritoneal drain make any difference? A pilot prospective randomised controlled trial

PURPOSE

This was a pilot randomised, prospective study, which aimed to determine and compare the post-operative complications of paediatric patients undergoing laparoscopic appendectomy (LA) for complicated appendicitis, with and without a peritoneal drain.

METHODS

Patients younger than 13 years, undergoing LA for complicated appendicitis at the Dr George Mukhari Academic Hospital (DGMAH), over a 15-month period during 2019-2020 were enrolled. Randomisation was achieved by a blocked randomisation plan. Patients were randomised in a 1:1 ratio into the "drain" (D) and "no drain" (ND) groups.

RESULTS

Thirty-four patients were included in this study; seventeen in each group. The complication rate was 26%. Intra-abdominal collection accounted for 89% of the complications. The complication rate in the "D" group was 18% and 35% in the "ND" group, with no statistically significant difference. Complication rates were higher (38%) in patients with generalised pus when compared to localised pus (7%), although not statistically significant. The mean theatre time, hospital stay, and duration of antibiotic use did not differ significantly between the groups.

CONCLUSION

From our study, the post-operative peritoneal drain did not make any statistically significant difference in patient outcome. The amount of intra-abdominal contamination is more likely to contribute in the development of complications.

TRIAL REGISTRATION NUMBER

SMUREC/M/15/2019: PG.

Same-Day Discharge after Laparoscopic Appendectomy for Simple Appendicitis in Pediatric Patients—Is It Possible?

(1) Background: One-day surgery has been widely adopted for many elective laparoscopic procedures in pediatric patients. Recently, the same protocol has been investigated for some emergency procedures, such as laparoscopic appendectomy. This study aimed to evaluate the safety and effectiveness of discharge from hospital within 24 h in pediatric patients who received laparoscopic appendectomy for uncomplicated acute appendicitis. (2) Methods: From 1 March 2021 to 1 May 2022, a total of 180 pediatric patients who were discharged from hospital within 24 h after laparoscopic appendectomy for uncomplicated appendicitis were included in this prospective single-center study. The primary outcome of this study was the safety of discharge from hospital within 24 h after laparoscopic appendectomy for uncomplicated appendicitis, as well as the parental satisfaction with this protocol. Secondary outcomes included the rate of readmission or unplanned return to the operating room, the complication rate and a cost-effectiveness analysis. For each patient, demographic data, preoperative evaluation (physical examination, laboratory data, imaging), duration of surgery, intraoperative and postoperative complications, length of hospital stay and pain levels, as well as parental satisfaction with this protocol, were recorded. (3) Results: The median age was 11 years (interquartile range (IQR) 10, 14). The majority of the patients (63.8%) were males. The median length of hospital stay after surgery was 15 h (IQR 12, 19). The highest level of satisfaction, at discharge, was recorded in most of the respondents (n = 155, 86.1%), while the remaining 25 (13.9%) expressed moderate levels of satisfaction. The median pain levels according to a visual analogue scale for all postoperative days were low (range 0–4). In four patients (2.2%), unplanned readmission before the seventh postoperative day because of postoperative intraabdominal abscess was recorded. All patients with abscess formation were treated conservatively. The majority of the parents (n = 175; 97.2%) expressed the highest level of satisfaction during the outpatient follow-up examination on the seventh postoperative day. (4) Conclusions: Same-day discharge after laparoscopic appendectomy for simple appendicitis in pediatric patients was safe and feasible. Parental satisfaction with this protocol was very high. With the right protocol and parent education, pediatric patients who underwent laparoscopic appendectomy because of non-complicated acute appendicitis may be successfully treated in this way.

A Comparison of Pediatric Appendicitis During the COVID-19 Pandemic and the Same Period Previous Year

Background: Although appendicitis is the most common emergency abdominal surgical pathology in the pediatric age group, there are a limited number of publications in the literature on how appendicitis has affected patients during the COVID-19 pandemic. Objectives: This study examined the effects of fear of being infected with COVID-19 and isolation measures on complications and morbidity in pediatric appendicitis cases. Methods: This study was performed in the Department of Pediatric Surgery, Faculty of Medicine, Health Sciences University, Şişli Hamidiye Etfal Training and Research Hospital, Istanbul, Turkey. Patients aged 18 years and younger who were operated on for appendicitis between 11 March 2019 and 11 May 2019 were classified as group 1, and patients aged 18 years and younger who were operated on for appendicitis between 11 March 2020 and 11 May 2020 (during the pandemic) were classified as group 2. Both groups were compared in terms of age, gender, symptoms, duration of symptoms, surgical method, duration of operation, length of hospital stay, and postoperative complications. Results: There were 85 patients in group 1 and 49 in group 2. The mean age was 11.5 ± 3.5 years in group 1 and 12.2 ± 3.0 years in group 2. While the mean hospital admission time for group 1 was 52.2 ± 38.5 hours, it was 50.2 ± 40.0 hours for group 2. The complicated appendicitis rates were 37% and 25% in group 1 and group 2, respectively. In group 1, 94.1% of the operations were completed laparoscopically, whereas, in group 2, this rate was 88.6%. The mean operation time was 64.0 ± 24.4 minutes in group 1 and 69.0 ± 33.0 minutes in group 2. The mean length of hospital stay was 2.9 ± 2.0 days in group 1 and 3.1 ± 3.40 days in group 2. The complication rate was 8.2% in group 1 and 11.4% in group 2. Conclusions: Despite the isolation measures and the risk of virus transmission, the psychosocial effects of the pandemic did not prevent real emergency cases with appendicitis from visiting hospitals.

Emergency appendectomy versus elective appendectomy following conservative treatment for acute appendicitis: a multicenter retrospective clinical study by the Japanese Society for Abdominal Emergency Medicine

PURPOSE

To establish the best treatment strategy for acute appendicitis.

METHODS

We collected data on 2142 appendectomies performed in 2017 and compared the backgrounds and surgical outcomes of patients who underwent early surgery (ES) (< 48 h) with those managed with non-ES (> 48 h). We performed a risk factor analysis to predict postoperative complications and subgroup analysis to propose a standard treatment strategy.

RESULTS

The incidence of postoperative complications was significantly higher in the ES group than in the non-ES group, and significantly lower in the laparoscopic surgery group than in the laparotomy group. Surgical outcomes, including the incidence of postoperative complications, were comparable after acute surgery (< 12 h) and subacute surgery (12-48 h), following antibiotic treatment. The risk factors for postoperative complications in the ES group were a higher age, history of abdominal surgery, perforation, high C-reactive protein level, histological evidence of gangrenous or perforated appendicitis, a long operation time, and intraoperative complications. The risk factors for postoperative complications in the non-ES group were perforation and unsuccessful conservative treatment.

CONCLUSIONS

Non-early appendectomy is feasible for acute appendicitis but should be applied with care in patients with risk factors for postoperative complications or failure of pretreatment, including diabetes mellitus, abscess formation, and perforation.

Subhepatic perforated acute appendicitis in a patient with midgut malrotation: A case report and review of the literature

INTRODUCTION AND IMPORTANCE

Subhepatic acute appendicitis (SHAA) is a very rare cause of acute abdomen, developing in association with two types of congenital anomalies like as midgut malrotation (MM) and maldescent of the caecum. Preoperative diagnosis of SHAA is a challenge because of its rarity and atypical presentation. Imaging may be helpful for determining the correct diagnosis. Surgery represents the standard treatment of SHAA.

CASE PRESENTATION

A 25-year-old Caucasian male presented to the Emergency Department with a one-day history of right lower quadrant (RLQ) abdominal pain, nausea and vomiting. Physical examination revealed RLQ abdominal rebound tenderness with guarding. Laboratory tests reported high levels of C-reactive protein and neutrophilic leukocytosis. Abdominal contrast-enhanced computed tomography showed a SHAA with intraluminal appendicolith, fat infiltration and pelvic fluid collection in a patient with MM. The patient underwent laparoscopic appendectomy: a retrocaecal subhepatic phlegmonous and perforated appendicitis was sectioned and removed with drainage of pelvic abscess. The postoperative course of the patient was uneventful.

CLINICAL DISCUSSION

SHAA is characterized by anatomical variation of appendix and atypical presentation. Preoperative clinical diagnosis of SHAA is very difficult and imaging may be helpful for determining the correct diagnosis, as well as confirming MM or maldescent of the caecum. Laparoscopic appendectomy represents the correct treatment of SHAA.

CONCLUSION

SHAA is a rare surgical emergency that should be considered in the differential diagnosis of patients with RLQ abdominal pain. Preoperative diagnosis needs a high index of suspicion and is facilitated by imaging. Surgery represents the appropriate treatment of SHAA.

Mast Cell Essential Roles: Will it be a Novel Tool for Differentiating the Severity of Pediatric Appendicitis?

BACKGROUND: Appendicitis is an undesirable diagnosis, and the Alvarado score (AS) alone is insufficient in recognizing it. Many novel laboratory indicators, such as leukocytes and mast cells, differentiate. AIM: Our objective was to demonstrate that mast cells had a greater influence on appendicitis severity than the AS, neutrophils, and platelets. MATERIALS AND METHODS: An observational research in which 35 individuals with acute appendicitis at our institutions were identified for the appendix grade and allocated to one of two groups: Complicated or non-complicated. The AS and white blood cell count were calculated using the neutrophil-lymphocyte ratio (NLR), platelet-to-lymphocyte ratio (PLR), thrombocyte-to-neutrophil ratio (TNR), and total leukocyte. Mast cell count and granulation are evaluated using pathological anatomy. RESULTS: TLR could not distinguish between severe appendicitis and others, but some showed potential. NLR, TNR, total leukocyte, ASs, mast cell count, and degranulation demonstrated good sensitivity-specificity values. CONCLUSIONS: Mast cells have the potential to become a promising approach for predicting complicated pediatric appendicitis.

Predictive value of serum sodium level in determining perforated appendicitis

BACKGROUND

The aim of the study was to investigate the predictive value of hyponatremia as a new biochemical marker for the early and accurate preoperative diagnosis of complicated appendicitis in the adult population.

METHODS

732 patients who were operated for acute appendicitis (AA) and diagnosed as perforation intraoperatively were evaluated retrospectively. Serum sodium, C-reactive protein (CRP), and leukocyte levels of patients with perforated and nonperforated appendicitis were compared.

RESULTS

Perforated appendicitis patients had statistically lower serum Na values (p<0.001). Similarly, patients without perforated appendicitis had higher serum CRP values (p<0.001). In patients diagnosed with perforated AA, the sensitivity of plasma sodium concentration was 63%, and the specificity was 66%. The threshold value of plasma sodium concentration ≤137.5 mEq/L had the best possible sensitivity and specificity.

CONCLUSION

Hyponatremia is a new marker of perforated appendicitis and therefore, serum sodium level measurement should be considered in patients with a clinical presentation consistent with appendicitis if complications are suspected.

Agreement between histopathological and intraoperative classifications for pediatric appendicitis and its relationship with the post-operative clinical outcome

INTRODUCTION

Some studies have shown poor agreement between intraoperative and histopathological classifications for appendicitis, despite their routine use in clinical practice.

OBJECTIVE

To investigate the agreement between histopathological and intraoperative classifications for pediatric appendicitis and evaluate the predictive potential of these classifications for the post-operative outcome.

METHODS

A retrospective, longitudinal, observational single-center study, carried out with 485 patients up to15 years of age, with a confirmed diagnosis of acute appendicitis by histopathological evaluation. The histopathological results classified the appendices as uncomplicated appendicitis when there was confirmation of the diagnosis of appendicitis without necrosis or perforation and complicated appendicitis when there was extensive necrotic tissue in the outer layer of the appendix or signs of perforation. The intraoperative findings were classified as uncomplicated appendicitis when the appendix presented with hyperemia and edema or fibrinous exudate and complicated appendicitis when the appendix showed necrosis, abscess, or perforation. The kappa index determined the agreement and the prediction relationships using a generalized linear model.

RESULTS

43.9% of cases were classified as complicated appendicitis by histopathological evaluation and 49.7% by intraoperative classification. The agreement analysis between the histopathological and intraoperative classification showed a moderate agreement, with a Kappa index of 0.419 (0.337-0.501). There was an association (P < 0.05) between the intraoperative classification and the post-operative clinical outcomes (time to start feeding, fever, intraabdominal collection, length of stay, the need for antibiotic therapy changing, and need for ICU). There was no association between histopathological classification and post-operative outcomes.

CONCLUSION

The agreement between the two classifications was moderate, and the intraoperative classification was able to predict the post-operative clinical outcomes.

PROGRAMMED LAPAROSCOPY IN THE OF DIFFUSE APPENDICULAR PERITONITIS TREATMENT OF CHILDREN

OBJECTIVE

The aim: To analyze the implementation of programmed laparoscopy with the criteria definition for its termination in the treatment of diffuse appendicular peritonitis in children.

PATIENTS AND METHODS

Materials and methods: Since 2017, the programmed laparoscopy in the treatment of diffuse appendicular peritonitis has been used in 28 children aged 1 to 16 years.

RESULTS

Results: The programmed laparoscopy allows assessing the dynamics of the intra-abdominal infectious-inflammatory process and monitoring the treatment effectiveness. The modified abdominal index (AI) was determined based on integrated assessment of degree and nature of abdominal organs` damage during the first and repeated surgeries, the modified abdominal index (AI) was determined. AI identified during the primary laparoscopic intervention ranged from 14 up to 22 points and on average it was 17.5 ± 1.3 points, during the programmed laparoscopy AI was from 3 to 11 points, on average it was 9.15 ± 1.48 points.

CONCLUSION

Conclusions: The programmed laparoscopy for diffuse peritonitis in children allows controlling the pathological process in the abdominal cavity and promptly eliminate intra-abdominal complications. Determination of AI allows objectifying the nature of the lesion and the dynamics of changes in the abdominal cavity.

Recurrent appendicitis following successful drainage of appendicular abscess in adult without interval appendectomy during COVID-19. Prospective cohort study

BACKGROUND

COVID-19 infection is a global pandemic that affected routine health services and made patients fear to consult for medical health problems, even acute abdominal pain. Subsequently, the incidence of complicated appendicitis increased during the Covid-19 pandemic. This study aimed to evaluate recurrent appendicitis after successful drainage of appendicular abscess during COVID-19.

MATERIAL AND METHODS

A prospective cohort study conducted in the surgical emergency units of our Universities' Hospitals between March 15, 2020 to August 15, 2020 including patients who were admitted with the diagnosis of an appendicular abscess and who underwent open or radiological drainage. Main outcomes included incidence, severity, and risk factors of recurrent appendicitis in patients without interval appendectomy.

RESULTS

A total of 316 patients were included for analysis. The mean age of the patients was 37 years (SD ± 13). About two-thirds of patients were males (60.1%). More than one-third (39.6%) had co-morbidities; type 2 diabetes mellitus (T2DM) (22.5%) and hypertension (17.1%) were the most frequent. Approximately one quarter (25.6%) had confirmed COVID 19 infection. About one-third of the patients (30.4%) had recurrent appendicitis. More than half of them (56.3%) showed recurrence after three months, and 43.8% of patients showed recurrence in the first three months. The most frequent grade was grade I (63.5%). Most patients (77.1%) underwent open surgery. Age, T2DM, hypertension, COVID-19 infection and abscess size >3 cm were significantly risking predictors for recurrent appendicitis.

CONCLUSIONS

Interval appendectomy is suggested to prevent 56.3% of recurrent appendicitis that occurs after 3 months. We recommend performing interval appendectomy in older age, people with diabetes, COVID-19 infected, and abscesses more than 3 cm in diameter.

RESEARCH QUESTION

Is interval appendectomy preventing a high incidence of recurrent appendicitis after successful drainage of appendicular abscess during COVID-19 pandemic?

Risk factors for postoperative morbidity following appendectomy in the elderly: a nationwide prospective cohort study

BACKGROUND

A limited number of studies investigating perioperative risk factors associated with emergency appendectomy in elderly patients have been published to date. Whether older age may be associated with poorer outcomes following appendectomy is still a matter of debate. The primary aim of this study was to determine the predictors of postoperative morbidity following appendectomy in patients aged ≥ 65 years.

METHODS

Data regarding all elderly patients who underwent emergency appendectomy from January 2017 to June 2018 admitted 36 Italian surgical departments were prospectively collected and analyzed. Baseline demographics and perioperative variables were evaluated. Uni- and multivariate analyses adjusted for differences between groups were carried out to determine possible predictors of adverse outcomes after appendectomy.

RESULTS

Between January 2017 and June 2018, 135 patients aged ≥ 65 years with a diagnosis of AA met the study inclusion criteria. Twenty-six patients (19.3%) were diagnosed with some type of postoperative complication. Decreasing the preoperative hemoglobin level showed a statistically significant association with postoperative complications (OR 0.77, CI 0.61-0.97, P = 0.03). Preoperative creatinine level (P = 0.02, OR 2.04, CI 1.12-3.72), and open appendectomy (P = 0.03, OR 2.67, CI 1.11-6.38) were significantly associated with postoperative morbidity. After adjustment, the only independent predictor of postoperative morbidity was preoperative creatinine level (P = 0.04, OR 2.01, CI 1.05-3.89).

CONCLUSIONS

In elderly patients with AA, perioperative risk assessment in the emergency setting must be as accurate as possible to identify modifiable risk factors that can be addressed before surgery, such as preoperative hemoglobin and creatinine levels.

SARS-CoV-2 infection is not associated with a higher rate of post-operative complications in adult appendectomy patients in Peru: Cross-sectional study

BACKGROUND

We present outcomes of patients with SARS-CoV-2 undergoing appendectomy in order to aid in clarification of current controversies regarding safety of therapeutic options for emergency surgical diseases in patients with SARS-CoV-2. Peru has the greatest number of per capita deaths due to SARS-CoV-2 of any country and is one of few with a COVID-dedicated hospital.

MATERIALS AND METHODS

This prospective observational study included all adult patients with acute appendicitis admitted to an urban, public, COVID-dedicated hospital over two months. Baseline characteristics and post-operative outcomes at 28 days are reported.

RESULTS

58 patients, 35 male and 23 female, ages 15-73 years with SARS-CoV-2 as diagnosed by IgM (12%), IgG (19%) or both (69%) and acute appendicitis as diagnosed using the Alvarado Score and confirmed intraoperatively were enrolled. All patients presented with right lower quadrant pain, 86% with leukocytosis, 88% with nausea/emesis and no patients with respiratory complaints. All patients underwent open appendectomy, 90% under regional anesthesia. Average operative time was 54±25 min, length of stay 2.5±1.5 days. 14% of patients had a post-operative complication, all were minor, four (7%) incisional surgical site infections, one (2%) organ space, and three (5%) incisional seromas, no deaths or serious complications.

CONCLUSION

Open surgical management of acute appendicitis with regional anesthesia in adults with pre-operative diagnosis of SARS-CoV-2 is feasible and not associated with an increased frequency or severity of post-operative complications, longer operative time, or extended hospitalization as compared to reports in similar patients without SARS-CoV-2.

Diverticular Disease of the Appendix Is Associated with Complicated Appendicitis

INTRODUCTION

Diverticular disease of the vermiform appendix (DDA) has an incidence of 0.004 to 2.1% in appendicectomy specimens. DDA is variably associated with perforation and malignancy. We report a single-center experience of DDA. The primary aim is to validate the association of DDA with complicated appendicitis or malignancy, and the secondary aim is to validate systemic inflammatory response syndrome (SIRS) criteria and quick Sepsis-related Organ Failure Assessment (qSOFA) scores.

METHODS

The histopathology reports of 2,305 appendicectomy specimens from January 2011 to December 2015 were reviewed. Acute appendicitis was found in 2,164 (93.9%) specimens. Histology of the remaining 141 (6.1%) patients revealed: normal appendix (n = 110), DDA (n = 22), endometriosis of appendix (n = 6), and an absent appendix (n = 3). Patient demographics, clinical profile, operative data, and perioperative outcomes of DDA patients are studied. Modified Alvarado score, Andersson score, SIRS criteria, and qSOFA scores were retrospectively calculated.

RESULTS

The incidence of DDA was 0.95%. Ten patients (45.5%) had diverticulitis. The mean age of DDA patients was 39.5 years (range 23-87), with male preponderance (n = 12, 54.5%). The median Modified Alvarado score was 8 (range 4-9), and the median Andersson score was 5 (range 2-8). Fourteen patients (63.6%) had SIRS, and none had a high qSOFA score. Eight patients (36.4%) had complicated appendicitis (perforation [n = 2] or abscess [n = 6]). Eleven (50%) patients underwent laparoscopic appendicectomy. There were three 30-day readmissions and no mortality.

CONCLUSION

DDA is a distinct clinical pathology associated with complicated appendicitis.

An effect of the COVID-19 pandemic: Significantly more complicated appendicitis due to delayed presentation of patients!

Aims of the study

The novel coronavirus pandemic has affected emergency department consultations for surgical pathologies. The aim of our study was to compare the number of acute appendicitis cases and the proportion of complicated appendicitis before and during the COVID-19 pandemic.

Methods

We retrospectively analyzed all data collected from a multi-center database of patients presenting to the emergency department for acute appendicitis during the COVID-19 pandemic from March 12 to June 6, 2020, and compared these data with those from the same periods in 2017, 2018, and 2019. The number of acute appendicitis cases, proportion of complicated appendicitis, and pre- and postoperative patient characteristics were evaluated.

Results

A total of 306 patients were included in this evaluation. Sixty-five patients presented during the 2020 COVID-19 pandemic lockdown (group A), and 241 patients in previous years (group B: 2017–2019). The number of consultations for acute appendicitis decreased by almost 20 percent during the pandemic compared with previous periods, with a significant increase in complicated appendicitis (52% in group A versus 20% in group B, p < 0,001.). Comparing the two groups, significant differences were also noted in the duration of symptoms (symptoms > 48h in 61% and 26%, p < 0,001), the intervention time (77 vs 61 minutes, p = 0,002), length of hospital stay (hospitalization of > 2 days in 63% and 32%, p < 0.001) and duration of antibiotic treatment (antibiotics > 3 days in 36% and 24% p = 0.001).

Conclusions

The COVID-19 pandemic resulted in a decreased number of consultations for acute appendicitis, with a higher proportion of complicated appendicitis, most likely due to patient delay in consulting the emergency department at symptom onset. Patients and general practitioners should be aware of this problem to avoid a time delay from initial symptoms to consultation.

Appendicitis during the COVID-19 pandemic: lessons learnt from a district general hospital

BACKGROUND

The COVID-19 pandemic dramatically influenced the delivery of healthcare. In line with the UK Royal Colleges' advice the management of acute appendicitis (AA) changed with greater consideration for non-operative management (NOM) or open appendicectomy when operative management (OM) was sought. We describe our experience of the presentation, management and outcomes for these patients to inform care for future viral pandemics.

METHODS

This retrospective, cohort study compared patients diagnosed with AA between March and July 2019 with those during the pandemic period of March to July 2020. Medical records were reviewed to obtain demographics, inflammatory markers, imaging, severity, management, histology, length of stay (LOS) and 90-day outcomes.

RESULTS

There were 149 and 125 patients in the 2019 and 2020 cohorts respectively. 14 patients (9.4%) had NOM in 2019 versus 31 (24.8%) in 2020 (p = 0.001). In the 2019 operative management (OM) group 125 patients (92.6%) had laparoscopic appendicectomy versus 65 (69.1%) in 2020. 59 patients (39.6%) had a CT in 2019 versus 70 (56%) in 2020. The median LOS was 4 days in 2019 and 3 days in 2020 (p = 0.03). Two patients in each year who received NOM had treatment failure (14.3% in 2019 and 6.5% in 2020). Three patients in 2019 who received OM had treatment failure (2.2%). Of 95 patients tested for COVID-19 all but one tested negative.

CONCLUSION

During the COVID-19 pandemic there was no observed increase in severity of AA, patients had a shorter LOS and were more likely to have imaging. NOM proportionally increased with no observed change in outcomes.

Impact of an Acute Care Surgery Model on the Management of Acute Appendicitis in South Korea: A Retrospective Cohort Study

Background

The acute care surgery (ACS) system is a new model for the prompt management of diseases that require rapid treatment in patients with acute abdomen. This study compared the outcomes and characteristics of the ACS system and traditional on-call system (TROS) for acute appendicitis in South Korea.

Methods

This single-center, retrospective study included all patients (aged ≥18 years) who underwent surgery for acute appendicitis in 2016 and 2018. The TROS and ACS system were used for the 2016 and 2018 groups, respectively. We retrospectively obtained data on each patient from the electrical medical records. The independent samples t-test and Mann-Whitney U-test were used for continuous and nonnormally distributed data, respectively.

Results

In total, 126 patients were included. The time taken to get from the emergency room admission to the operating room, operation times, and postoperative complication rates were similar between both groups. However, the length of the hospital stay was shorter in the ACS group than in the TROS group (4.3 ± 3.2 days vs. 7.2 ± 9.6 days, p=0.039).

Conclusions

Since the introduction of the ACS system, the length of hospital stay for surgical patients has decreased. This may be due to the application of an integrated medical procedure, such as a new clinical pathway, rather than differences in the surgical techniques.

Acute Appendicitis in Childhood and Adulthood

BACKGROUND

Acute appendicitis is the most common cause of the acute abdomen, with an incidence of 1 per 1000 persons per year. It is one of the main differential diagnoses of unclear abdominal conditions.

METHODS

This review is based on pertinent publications that were retrieved by a selective search in the PubMed and Cochrane Library databases.

RESULTS

In addition to the medical history, physical examination and laboratory tests, abdominal ultrasonography should be performed to establish the diagnosis (and sometimes computed tomography [CT] or magnetic resonance imaging [MRI], if ultrasonography is insufficient). Before any treatment is provided, appendicitis is classified as either uncomplicated or complicated. In both types of appendicitis, the decision to treat surgically or conservatively must be based on the overall clinical picture and the patient's risk factors. Appendectomy is the treatment of choice for acute appendicitis in all age groups. In Germany, appendectomy is mainly performed laparoscopically in patients with low morbidity. Uncomplicated appendicitis can, alternatively, be treated conservatively under certain circumstances. A meta-analysis of five randomized, controlled trials has revealed that ca. 37% of adult patients treated conservatively undergo appendectomy within one year. Complicated appendicitis is a serious disease; it can also potentially be treated conservatively (with antibiotics, with or without placement of a drain) as an alternative to surgical treatment.

CONCLUSION

Conservative treatment is being performed more frequently, but the current state of the evidence does not justify a change of the standard therapy from surgery to conservative treatment.

Low intra-operative diagnostic accuracy does not affect postoperative treatment of acute appendicitis

BACKGROUND

The intra-operative classification of appendicitis defines postoperative treatment. The correct designation can influence patient recovery, complications and hospital costs. Recent research has shown that intra-operative classification criteria varies among surgeons, and is not always the same as the pathologist's report. Classification accuracy can lower costs by preventing unnecessary treatment or sub-optimal interventions.

METHODS

During a period of 4 months, N = 133 appendix specimens were received and evaluated by the pathology department of a single teaching hospital. Five surgeons extracted the specimens and one experienced pathologist drew the histopathology reports. A comparison between the surgeons' classifications and the pathologist's was made. Classification accuracy was determined and statistical analyses was performed using chi-square, and p values were obtained. A p < 0.05 was considered significant.

RESULTS

A total of N = 133 specimens were obtained, 127 belonged to patients following emergency surgery due to acute abdominal pain; the other six were from elective hemi-colectomies for right colonic adenocarcinomas, and were not included. Of the 127 specimens analyzed, 14 (11%) were negative, 21 (16.5%) were edematous, 81 (63.7%) were phlegmonous and 11 (8.6%) were gangrenous. A total of 18 (14%) perforated appendices were also reported. Surgical accuracy was 60.6% (N = 67) with a statistically significant p < 0.001. Only five patients with incorrect intraoperative classifications received unnecessary or lacked treatment.

CONCLUSIONS

An overall accuracy of 60.6% is seen when the surgical classification is compared to the pathological classification. Although the surgeons' accuracy is low when comparing intra-operative versus histopathological classification, this variation in designation does not affect postoperative treatment significantly.

Impact of COVID-19 Outbreak on the Emergency Presentation of Acute Appendicitis

BACKGROUND

The global crisis resulting from the coronavirus pandemic has imposed a large burden on health systems worldwide. Nonetheless, acute abdominal surgical emergencies are major causes for nontrauma-related hospital admissions and their incidences were expected to remain unchanged. Surprisingly, a significant decrease in volume and a higher proportion of complicated cases are being observed worldwide.

METHODS

The present study assesses the local impact of the coronavirus pandemic on the emergency presentation of acute appendicitis in a Brazilian hospital. A retrospective analysis was conducted on patients undergoing emergency surgery for the clinically suspected diagnosis of acute appendicitis during the 2-month period of March and April 2020 and the same time interval in the previous year. Data on demographics, timing of symptom onset and hospital presentation, intraoperative details, postoperative complications, hospital length of stay, and histological examination of the specimen were retrieved from individual registries.

RESULTS

The number of appendectomies during the pandemic was 36, which represents a 56% reduction compared to the 82 patients operated during the same period in 2019. The average time of symptom onset to hospital arrival was significantly higher in 2020 (40.6 vs. 28.2 hours, P = .02). The classification of appendicitis revealed a significant higher proportion of complicated cases than the previous year (33.3% vs. 15.2%, P = .04). The rate of postoperative complications and the average length of stay were not statistically different between the groups.

CONCLUSION

Further assessment of patients' concerns and systematic monitoring of emergency presentations are expected to help us understand and adequately address this issue.

[Recommendations on treatment of acute appendicitis : Recommendations of an expert group based on the current literature]

The paradigm shift in the treatment concept for acute appendicitis is currently the subject of intensive discussions. The diagnosis and differentiation of an uncomplicated from a complicated appendicitis as well as the selection of an adequate treatment is very challenging, especially since nonoperative treatment models have been published. The laparoscopic appendectomy is still the standard for most cases. Guidelines for the treatment of acute appendicitis do not exist in Germany. Therefore, a group of experts elaborated 21 recommendations on the treatment of acute appendicitis after 3 meetings. After initial definition of population, intervention, comparison and outcome (PICO) questions, recommendations have been finalized through the Delphi voting system. The results were evaluated according to the current literature. The aim of this initiative was to define a basic support for decision making in the clinical routine for treatment of acute appendicitis.

Diagnosis and treatment of acute appendicitis: 2020 update of the WSES Jerusalem guidelines

BACKGROUND AND AIMS

Acute appendicitis (AA) is among the most common causes of acute abdominal pain. Diagnosis of AA is still challenging and some controversies on its management are still present among different settings and practice patterns worldwide. In July 2015, the World Society of Emergency Surgery (WSES) organized in Jerusalem the first consensus conference on the diagnosis and treatment of AA in adult patients with the intention of producing evidence-based guidelines. An updated consensus conference took place in Nijemegen in June 2019 and the guidelines have now been updated in order to provide evidence-based statements and recommendations in keeping with varying clinical practice: use of clinical scores and imaging in diagnosing AA, indications and timing for surgery, use of non-operative management and antibiotics, laparoscopy and surgical techniques, intra-operative scoring, and peri-operative antibiotic therapy.

METHODS

This executive manuscript summarizes the WSES guidelines for the diagnosis and treatment of AA. Literature search has been updated up to 2019 and statements and recommendations have been developed according to the GRADE methodology. The statements were voted, eventually modified, and finally approved by the participants to the consensus conference and by the board of co-authors, using a Delphi methodology for voting whenever there was controversy on a statement or a recommendation. Several tables highlighting the research topics and questions, search syntaxes, and the statements and the WSES evidence-based recommendations are provided. Finally, two different practical clinical algorithms are provided in the form of a flow chart for both adults and pediatric (< 16 years old) patients.

CONCLUSIONS

The 2020 WSES guidelines on AA aim to provide updated evidence-based statements and recommendations on each of the following topics: (1) diagnosis, (2) non-operative management for uncomplicated AA, (3) timing of appendectomy and in-hospital delay, (4) surgical treatment, (5) intra-operative grading of AA, (6) ,management of perforated AA with phlegmon or abscess, and (7) peri-operative antibiotic therapy.

Comparison of stump closure techniques during laparoscopic appendectomies for complicated appendicitis - results from Pol-LA (Polish laparoscopic appendectomy) multicenter large cohort study

Background: In general, the three main options for stump closure in laparoscopic appendectomy are clips, endoscopic staplers and endoloops. However, there is no gold standard, especially regarding complicated acute appendicitis which is generally associated with worse outcomes.Objectives: We aimed to assess the outcomes of different stump closure techniques during laparoscopic appendectomies for complicated appendicitisMethods: Our multicenter observational study of 18 surgical units assessed the outcomes of 1269 laparoscopic appendectomies for complicated appendicitis that used the three main stump closure techniques: clips, staplers and endoloops. Groups were compared in terms of peri- and postoperative outcomes.Results: Staplers were superior in terms of overall morbidity (9.79 vs. 3.29% vs. 7.41%, p = .017) and length of stay (4 vs. 3 vs. 4 days, p < .001) respectively for clips, staplers and endoloops. However, no differences in major complication rates, postoperative intraabdominal abscess formation, reintervention rates and readmission rates were found.Conclusion: Although our results show some clinical benefits of staplers for appendix stump closure, they are based on a non-randomized group of patients and are therefore prone to selection bias. Further well-designed trials taking into consideration not only the clinical benefits, but also, the economic aspects of the surgical treatment of complicated acute appendicitis are needed to confirm our results.

Acute Appendicitis in Patients with Kartagener Syndrome

Situs inversus totalis is a congenital syndrome characterized by a total left-right transposition of all abdominal and thoracic organs. It may be associated with chronic respiratory conditions such as sinusitis and bronchiectasis, composing the Kartagener syndrome. If not detected, this condition may compromise the early diagnosis of surgical emergencies such as cholecystitis and appendicitis. A rare case of appendicitis in a patient with Kartagener syndrome is here reported.

Consensus Statement of the Italian Polispecialistic Society of Young Surgeons (SPIGC): Diagnosis and Treatment of Acute Appendicitis

Background: Acute appendicitis (AA) is one of the most common causes of abdominal pain requiring surgical intervention. Approximately 20% of AA cases are characterized by complications such as gangrene, abscesses, perforation, or diffuse peritonitis, which increase patients' morbidity and mortality. Diagnosis of AA can be difficult, and evaluation of clinical signs, laboratory index and imaging should be part of the management of patients with suspicion of AA.Methods: This consensus statement was written in relation to the most recent evidence for diagnosis and treatment of AA, performing a literature review on the most largely adopted scientific sources. The members of the SPIGC (Italian Polispecialistic Society of Young Surgeons) worked jointly to draft it. The recommendations were defined and graded based on the current levels of evidence and in accordance with the criteria adopted by the American College of Chest Physicians (CHEST) for the strength of the recommendations.Results: Fever and migratory pain tend to be present in patients with suspicion of AA. Laboratory and radiological examinations are commonly employed in the clinical practice, but today also scoring systems based on clinical signs and laboratory data have slowly been adopted for diagnostic purpose. The clinical presentation of AA in children, pregnant and elderly patients can be unusual, leading to more difficult and delayed diagnosis. Surgery is the best option in case of complicated AA, whereas it is not mandatory in case of uncomplicated AA. Laparoscopic surgical treatment is feasible and recommended. Postoperative antibiotic treatment is recommended only in patients with complicated AA.

Laparoscopic versus open approach for diffuse peritonitis from appendicitis ethiology: a subgroup analysis from the Physiological parameters for Prognosis in Abdominal Sepsis (PIPAS) study

Diffuse peritonitis represents a life-threatening complication of acute appendicitis (AA). Whether laparoscopy is a safe procedure and presents similar results compared with laparotomy in case of complicated AA is still a matter of debate. The objective of this study is to compare laparoscopic (LA) and open appendectomy (OA) for the management of diffuse peritonitis caused by AA. This is a prospective multicenter cohort study, including 223 patients with diffuse peritonitis from perforated AA, enrolled in the Physiological parameters for Prognosis in Abdominal Sepsis (PIPAS) study from February to May 2018. Two groups were created: LA = 78 patients, mean age 42.51 ± 22.14 years and OA = 145 patients, mean age 38.44 ± 20.95 years. LA was employed in 34.98% of cases. There was no statically significant difference between LA and OA groups in terms of intra-abdominal abscess, postoperative peritonitis, rate of reoperation, and mortality. The wound infection rate was higher in the OA group (OR 21.63; 95% CI 3.46-895.47; P = 0.00). The mean postoperative hospital stay in the LA group was shorter than in the OA group (6.40 ± 4.29 days versus 7.8 ± 5.30 days; P = 0.032). Although LA was only used in one-third of cases, it is a safe procedure and should be considered in the management of patients with diffuse peritonitis caused by AA, respecting its indications.

Hyponatremia as a marker of complicated appendicitis: A systematic review

BACKGROUND

Acute appendicitis, the most common cause of acute surgical abdomen, is associated with intra-abdominal complications, such as perforation, that increase morbidity and mortality. Early and accurate preoperative diagnosis of complicated appendicitis mandates the identification of new diagnostic markers. This systematic review summarizes current literature on the adoption of hyponatremia as an early diagnostic and predictive marker of complicated appendicitis.

METHODS

Pubmed, Cochrane Library, Scopus, Google Scholar, WHO Global Health Library, System for Information on Grey Literature, ISI Web of Science, EBSCOHost and Virtual Health Library were searched in accordance with the PRISMA guidelines in order to identify original human studies investigating the association between hyponatremia and the presence or development of complicated appendicitis.

RESULTS

A total of 7 studies conducted in 6 different countries were identified. A prospective diagnostic accuracy study reported a strong association between hyponatremia and complicated appendicitis in children. The largest sample size study performed in adults reported a significant association between hyponatremia and perforated or gangrenous appendicitis.

CONCLUSIONS

The admission serum sodium level measurement, a routinely performed, low-cost test, should be taken into account in patients with clinical presentation compatible with acute appendicitis and suspicion of underlying complications. Future well-designed prospective diagnostic accuracy studies are required to further establish the association between hyponatremia and perforated appendicitis.

A five-year longitudinal observational study in morbidity and mortality of negative appendectomy in Sulaimani teaching Hospital/Kurdistan Region/Iraq

The most common surgical emergency is suspected acute appendicitis, the lifetime risk of acute appendicitis is estimated to be 8.6% for men and 6.7% for women, with a male to female ratio of 1.4:1; correct diagnosis can be made in 70–80% of patients after the operations about 32% of appendectomies revealed normal appendices and meanwhile appendectomy has a considerable morbidity and mortality. The aim is to explore potential morbidity and mortality associated with negative appendectomy. Prospective case series study, including 5847 patients, who were suspected to have acute appendicitis over a period of five years from 1st December 2013 to 30th November 2018, in emergency department of Sulaimani Teaching Hospital. All the collected data were collected, organized then analyzed by Statistical Package for the Social Sciences version 21. Morbidity in the patients with negative appendectomies occurred in patients in the form of 90 (01.91%) wound infection, 48 (01.02%) intestinal obstruction and last 15 (00.32%) patients developed septicemia. While mortality in negative appendectomy patients was 21, (00.45%). Negative appendectomies have high rates of morbidity and mortality, knowing real rates may help in considering various policies and may be helpful to elude avoidable complications and potential mortality.

A simple classification of peritoneal contamination in perforated appendicitis predicts surgery-related complications

AIM

Perforated appendicitis has poorer clinical outcomes compared to non-perforated appendicitis. However, accurate outcome comparisons in research and clinical audits are challenged by its wide spectrum of manifestation. Previous attempts at the classification of severity have been complex and difficult to reproduce. In our study, we used another institution's (Jones et al., TX, USA) previously described simple classification system of peritoneal contamination and examined its usefulness in predicting outcomes.

METHODS

With ethical approval, we retrospectively reviewed the records of all paediatric patients operated at our institution for perforated appendicitis from 2016 to 2017. Patient demographics, intra-operative and histological findings, post-operative outcomes and length of stay were collected. Patients were categorised into group 1 (purulence in right lower quadrant only) and group 2 (contamination in two or more quadrants). Post-operative complications were defined as procedure-related (e.g. post-operative ileus, intra-abdominal abscess, visceral injury) and non-procedure-related (e.g. bronchospasm). Statistical analysis using χ² tests for categorical data and Mann-Whitney U-tests for non-parametric continuous variables was performed, with a significance of P < 0.05.

RESULTS

There were 134 eligible patients. We excluded 19 with incomplete data, leaving 115 for analysis, of which 69 (60%) were in group 2. Those in group 2 had a longer stay (P = 0.005) and more post-operative complications (P = 0.001), particularly procedure-related events (P = 0.006). There were no differences in age (P = 0.182), gender (P = 0.876), readmission rate (P = 0.317) and non-procedure-related post-operative complications (0.152).

CONCLUSION

This simple classification of perforated appendicitis appears to differentiate clinical outcomes well, particularly for iatrogenic morbidity, making it useful for operative preparation and outcomes research.

Appendicular Lymphoid Hyperplasia in the Differential Diagnosis of Acute Appendicitis: Sonographic Findings

Objectives:

To describe sonographic findings of appendicular lymphoid hyperplasia (ALH) and to report demographic data of patients with ALH operated for acute appendicitis (AA).

Materials and Methods:

In a retrospective study, 694 biopsies of consecutive AA surgeries with previous ultrasonography (US) were reviewed, after selecting the ALH cases.

Results:

Twenty-five ALH cases were proved histologically (3.8% of appendectomies). The mean age was 13 years, with 84% under 20 years. US findings showed increased appendiceal diameter (average 7 mm) (82%), hypoechogenic pseudonodular mucosal thickening (50%), concentric parietal thickening (13%), and periappendiceal inflammatory changes (18%). In four cases, a normal appendix was noted on US, with two associated with intestinal intussusceptions.

Conclusion:

ALH is a benign entity most frequent in children that can predispose to AA. Both pathologies can increase the appendiceal diameter. In the pediatric group, ALH could be considered when hypoechogenic pseudonodular appendicular mucosal thickening in the absence of periappendiceal inflammatory changes occurs.

Communication and management of incidental pathology in 1,214 consecutive appendicectomies; a cohort study

BACKGROUND

Important incidental pathology requiring further action is commonly found during appendicectomy, macro- and microscopically. We aimed to determine whether the acute surgical unit (ASU) model improved the management and disclosure of these findings.

METHODS

An ASU model was introduced at our institution on 01/08/2012. In this retrospective cohort study, all patients undergoing appendicectomy 2.5 years before (Traditional group) or after (ASU group) this date were compared. The primary outcomes were rates of appropriate management of the incidental findings, and communication of the findings to the patient and to their general practitioner (GP).

RESULTS

1,214 patients underwent emergency appendicectomy; 465 in the Traditional group and 749 in the ASU group. 80 (6.6%) patients (25 and 55 in each respective period) had important incidental findings. There were 24 patients with benign polyps, 15 with neuro-endocrine tumour, 11 with endometriosis, 8 with pelvic inflammatory disease, 8 Enterobius vermicularis infection, 7 with low grade mucinous cystadenoma, 3 with inflammatory bowel disease, 2 with diverticulitis, 2 with tubo-ovarian mass, 1 with secondary appendiceal malignancy and none with primary appendiceal adenocarcinoma. One patient had dual pathologies. There was no difference between the Traditional and ASU group with regards to communication of the findings to the patient (p = 0.44) and their GP (p = 0.27), and there was no difference in the rates of appropriate management (p = 0.21).

CONCLUSION

The introduction of an ASU model did not change rates of surgeon-to-patient and surgeon-to-GP communication nor affect rates of appropriate management of important incidental pathology during appendectomy.

Risk factors for serious morbidity, prolonged length of stay and hospital readmission after laparoscopic appendectomy - results from Pol-LA (Polish Laparoscopic Appendectomy) multicenter large cohort study

Laparoscopic appendectomy (LA) for treatment of acute appendicitis has gained acceptance with its considerable benefits over open appendectomy. LA, however, can involve some adverse outcomes: morbidity, prolonged length of hospital stay (LOS) and hospital readmission. Identification of predictive factors may help to identify and tailor treatment for patients with higher risk of these adverse events. Our aim was to identify risk factors for serious morbidity, prolonged LOS and hospital readmission after LA. A database compiled information of patients admitted for acute appendicitis from eighteen Polish and German surgical centers. It included factors related to the patient characteristics, peri- and postoperative period. Univariate and multivariate logistic regression models were used to identify risk factors for serious perioperative complications, prolonged LOS, and hospital readmissions in acute appendicitis cases. 4618 laparoscopic appendectomy patients were included. First, although several risk factors for serious perioperative complications (C-D III-V) were found in the univariate analysis, in the multivariate model only the presence of intraoperative adverse events (OR 4.09, 95% CI 1.32-12.65, p = 0.014) and complicated appendicitis (OR 3.63, 95% CI 1.74-7.61, p = 0.001) was statistically significant. Second, prolonged LOS was associated with the presence of complicated appendicitis (OR 2.8, 95% CI: 1.53-5.12, p = 0.001), postoperative morbidity (OR 5.01, 95% CI: 2.33-10.75, p < 0.001), conversions (OR 6.48, 95% CI: 3.48-12.08, p < 0.001) and reinterventions after primary procedure (OR 8.79, 95% CI: 3.2-24.14, p < 0.001) in the multivariate model. Third, although several risk factors for hospital readmissions were found in univariate analysis, in the multivariate model only the presence of postoperative complications (OR 10.33, 95% CI: 4.27-25.00), reintervention after primary procedure (OR 5.62, 95% CI: 2.17-14.54), and LA performed by resident (OR 1.96, 95% CI: 1.03-3.70) remained significant. Laparoscopic appendectomy is a safe procedure associated with low rates of complications, prolonged LOS, and readmissions. Risk factors for these adverse events include complicated appendicitis, postoperative morbidity, conversion, and re-intervention after the primary procedure. Any occurrence of these factors during treatment should alert the healthcare team to identify the patients that require more customized treatment to minimize the risk for adverse outcomes.

Analysis of the Educational Value of YouTube Laparoscopic Appendectomy Videos

Purpose

To evaluate the educational value of laparoscopic appendectomy (LA) videos on YouTube for surgical trainees.

Methods

The search term “Laparoscopic appendectomy” was used on YouTube. The top 100 videos sorted by the number of views were evaluated. Each YouTube account was analyzed, and only videos uploaded by medical physicians were included in this study. Video quality was evaluated using an arbitrary appendectomy scoring system. Video characteristics and Global Operative Assessment of Laparoscopic Skills (GOALS) scores were analyzed regarding video quality and upload source.

Results

The video quality of 14 (25.0%) videos was graded as good, 36 (64.3%) moderate, and 6 (10.7%) of poor quality. Video characteristic analysis showed no differences in video quality according to the upload source (p=0.573). Video quality and upload source were not related to video length, total views, days online, number of likes, number of dislikes, number of comments, or GOALS score. Among the factors analyzed, only appendicitis severity was found to be associated with video grade (p=0.049).

Conclusion

The quality of LA YouTube videos varied. Categories considered as viewer feedback were not associated with video grade or upload source. Responsible video uploading by academic institutions, and appropriate censorship by YouTube seems necessary. Further research with objective data on actual application to surgical trainees is necessary.

Clinical outcomes of single-site laparoscopic interval appendectomy for severe complicated appendicitis: Comparison to conventional emergency appendectomy

AIM

Single-site laparoscopic interval appendectomy (SLIA) for severe complicated appendicitis after conservative treatment (CT) to ameliorate inflammation and eradicate the abscess should be safer and less invasive than emergency appendectomy (EA). However, only a few reports have been published regarding SLIA.

METHODS

We retrospectively collected data on 264 consecutive patients admitted to Kinan Hospital for treatment of appendicitis between 2012 and 2018. The safety and feasibility of SLIA and its perioperative outcomes for severe complicated appendicitis were investigated.

RESULTS

A total of 61 patients were included in this study, 25 of whom underwent CT and 36 EA. Among the 25 patients who underwent CT, 23 (92.0%) succeeded; a total of 16 patients (69.5%) underwent SLIA. Compared to the EA group, the SLIA group had less bleeding (median volume 8.5 vs 50 mL, P = .005) and lower rate of expansion surgery (0% vs 27.8%, P = .022). Although the postoperative hospital stay was shorter in the SLIA group than in the EA group (9 vs 12 days, P = .008), the total hospital stay, including the CT period, was longer in the SLIA group than in the EA group (24 vs 12 days, P < .001).

CONCLUSION

SLIA is safe, feasible, and less invasive than EA and may provide the advantages of minimally invasive surgery even if appendicitis is severe. SLIA may be a promising option for complicated appendicitis in select cases despite its disadvantage of prolonging the hospital stay.

A comparison of non-absorbable polymeric clips and staplers for laparoscopic appendiceal stump closure: analysis of 618 adult patients

PURPOSE

The aim of this long-term study was the comparison of appendiceal stump closure with polymeric clips or staplers with respect to perioperative costs and surgical outcome under routine conditions in a university centre.

METHODS

For this retrospective chart review, a total of 618 patients undergoing laparoscopic appendectomy for suspected acute appendicitis between 2010 and 2017 were reviewed: 410 patients in the stapler group and 208 patients in the clip group. The database contained demographic data, operation time, inflammation parameters, closure method of the stump, surgeon status, length of hospital stay, and complications as well as histology reports. The costs were also compared.

RESULTS

Clip application was more likely among younger patients (mean age 33.6 years vs. 41.7 years). Histopathological evidence for appendiceal pathology was found in 96.6% of patients in the clip group and 99.5% of patients in the stapler group. Laparoscopic appendectomy in the clip group was more frequently performed by resident physicians (69.2%) than in the stapler group (57.8%). The mean postoperative stay was 2.9 days in the clip group and 3.7 days in the stapler group. The use of the polymeric clip resulted in considerable cost savings (19.94€ vs. 348.70€).

CONCLUSIONS

The use of polymeric clips for appendiceal stump closure during appendectomy is safe and effective. The base of the appendix is amenable to clipping in 32% of appendectomies in adult patients. This study supports the use of polymeric clips over staplers to decrease cost and environmental impact.

Management of Appendicitis Globally Based on Income of Countries (MAGIC) Study

BACKGROUND

Our aim is to compare the management approaches and clinical outcomes of acute appendicitis according to annual Gross National Income per Capita (GNI/Capita) of countries.

METHODS

Consecutive patients who were diagnosed to have acute appendicitis from 116 centers of 44 countries were prospectively studied over a 6-month period (April-September 2016). Studied variables included demography, Alvarado score, comorbidities, radiological and surgical management, histopathology, and clinical outcome. Data were divided into three groups depending on the GNI/Capita.

RESULTS

A total of 4271 patients having a mean (SD) age of 33.4 (17.3) years were studied. Fifty-five percent were males. Two hundred and eighty patients were from lower-middle-income (LMI) countries, 1756 were from upper-middle-income (UMI) countries, and 2235 were from high-income (HI) countries. Patients in LMI countries were significantly younger (p < 0.0001) and included more males (p < 0.0001). CT scan was done in less than 8% of cases in LMI countries, 23% in UMI countries, and 38% in HI countries. Laparoscopy was performed in 73% of the cases in the HI countries, while open appendectomy was done in more than 60% of cases in both LMI and UMI countries (p < 0.0001). The longest mean hospital stay was in the UMI group (4.84 days). There was no significant difference in the complication or death rates between the three groups. The overall death rate was 3 per 1000 patients.

CONCLUSIONS

There is great variation in the presentation, severity of disease, radiological workup, and surgical management of patients having acute appendicitis that is related to country income. A global effort is needed to address this variation. Individual socioeconomic status could be more important than global country socioeconomic status in predicting clinical outcome.

REsiDENT 1 (Re-assessment of Appendicitis Evaluation during laparoscopic appendectomy: Do we End a Non-standardized Treatment approach and habit?): peritoneal irrigation during laparoscopic appendectomy-does the grade of contamination matter? A prospective multicenter resident-based evaluation of a new classification system

Background

Laparoscopic appendectomy has progressively gained acceptance as the standard of care for acute appendicitis. Focusing on the incidence of postoperative intra-abdominal abscess after a laparoscopic appendectomy, discordant data have been reported ranging from 1.5 to 20%. Besides, evidence advocating advantages from peritoneal irrigation over suction only are lacking. Most studies are burdened by a high level of heterogeneity regarding the severity of the appendicitis and modalities of peritoneal irrigation. One of the main drawbacks is the lack of an accepted classification for different degrees of appendicitis and peritoneal contamination. The aim of the study is to introduce a classification to clarify the relationship between grade of appendicitis, contamination, and postoperative incidence of IAA considering the surgeon’s attitude toward irrigation or suction alone. Preoperative, intra-operative, and postoperative predictive factors for infectious complication will also be assessed. This study is meant to be the first Italian multicenter resident-based observational study.

Methods

Patients suffering from acute appendicitis will be enrolled during a 1-year period, according to inclusion and exclusion criteria. Participants will fill an online form reporting all clinical and intra-operative data of each patient undergoing a laparoscopic appendectomy. General surgery residents will be responsible for data collection. Our proposal of classification is based on the histological grade of appendicitis and intra-operative degree of peritoneal contamination. For each grade, a progressively increasing score is assigned.

Discussion

The observational nature of this study is mandatory to examine surgeons’ attitude toward peritoneal contamination during laparoscopic appendectomy for appendicitis. Identification of different severity grades of acute appendicitis and their relationship with the development of postoperative abscesses is necessary. The resulting classification and score, even considering peritoneal lavage or suction alone, will define risk classes of peri-appendiceal contamination each one related to a specific incidence rate of postoperative IAA. Nowadays, maximum effort should be made to reach the best procedural standardization and surgical decision-making should be supported by solid evidence, especially in an emergency surgery setting.

Laparoscopic versus open appendectomy for perforated appendicitis in adults: randomized clinical trial

BACKGROUND

The advantages of laparoscopic appendectomy did not meet the same acceptance in the setting of perforated appendicitis as in uncomplicated appendicitis in the general surgical community. The aim of this study was to compare the clinical outcome of laparoscopic and open appendectomy in perforating appendicitis.

METHODS

A randomized controlled study was conducted on 126 patients presenting with perforated appendicitis. Sixty patients were subjected to laparoscopic appendectomy (LA) and 66 patients underwent traditional open appendectomy (OA).

RESULTS

65 (51.6%) patients were female, and 61 (48.4%) patients were male in whom the mean age was 37.6 + 8.5 years. A significant difference was calculated in the domains of postoperative pain, less need for analgesics, hospital stay, and return to daily activities. The mean operative time was shorter in OA 94 ± 10.4 min than LA 120.6 ± 17.7 min. No statistically significant difference between both groups was detected as regard occurrence of intra-abdominal collection.

CONCLUSION

In view of its clinical outcomes, laparoscopy should be considered in the context of perforated appendicitis. The possibility of intra-abdominal collection should not be a barrier against the widespread practice of this surgical procedure amidst laparoscopic surgeons if adequate precautions are employed.

Re-evaluation of purse string suture in laparoscopic appendectomy

PURPOSE

The aim of this study was to compare the outcomes of laparoscopic appendectomy (LA) using purse string invaginating sutures (PS) with those using intracorporeal knotting (IK) or Hem-o-lock polymeric clips (HL).

METHODS

A total of 882 patients who underwent laparoscopic appendectomy from January 2015 to December 2017 were studied retrospectively. Of these, 538 patients used PS, 229 patients used IK and 115 patients used HL to close the appendiceal stump. Their demographic characteristics, intraoperative findings and postoperative complications were analysed retrospectively.

RESULTS

There were similar percentages of complicated cases in all the groups (21.7% in PS vs. 21.4% in IK vs. 24.3% in HL, p = 0.803). The mean length of hospital stay was shorter in PS group when compared to IK or HL group (3.72 + 2.35 in PS vs. 4.41 + 2.40 in IK, 4.43 + 2.66 in HL, p < 0.05) as well as lower ASA scores (1.7 + 0.6 in PS vs. 1.8 + 0.6 in IK vs. 1.7 + 0.6 in HL, p < 0.05). The overall complication rates for the PS, the HL and the IK groups were 12.1, 8.7 and 9.2%, respectively. The rate of wound infection was higher in PS group for uncomplicated appendicitis (5.0% in PS vs. 2.8% in IK and 1.1% in HL, p = 0.129). Furthermore, there were no differences in the rate of intra-abdominal infection among the groups in both uncomplicated and complicated cases.

CONCLUSIONS

Based on our results, purse string suture failed to demonstrate better postoperative outcome in laparoscopic appendectomy and is no longer recommended by our institution as initial approach.