A Systematic Review and Meta-Analysis of Randomised Controlled Trials Comparing Thermal Versus Non-Thermal Endovenous Ablation in Superficial Venous Incompetence.

OBJECTIVE: The objective was to compare technical success, complications, and quality of life after thermal vs. non-thermal endovenous ablation for the treatment of superficial venous incompetence. DATA SOURCES: Electronic bibliographic sources (Google Scholar, Pubmed, Cochrane Database, Scopus, Web of Science, and Embase). REVIEW METHODS: A systematic review and meta-analysis of randomised controlled trials was conducted using terms to identify relevant studies to be included. The primary outcome was vein occlusion rate at up to four weeks and one to two years from procedure. Secondary outcome measures included peri-procedural pain, nerve injury, endothermal heat induced thrombosis, and quality of life. RESULTS: Eight randomised controlled trials met the selection criteria. These comprised a total of 1 956 patients, of whom 1 042 underwent endovenous thermal ablation and 915 underwent endovenous non-thermal ablation. There was no statistically significant difference in occlusion rate at all time points. Relative risk at four weeks and one to two years was 0.99 (95% CI 0.96 - 1.02) and 0.95 (95% CI 0.88 - 1.01), respectively. Non-thermal ablation was tolerated better and had less risk of nerve injury. There was no statistically significant difference in risk of endothermal heat induced thrombosis (EHIT). There was improvement in quality of life scores post-procedure but there was no statistically significant difference in thermal vs. non-thermal ablation. The quality of evidence assessed using GRADE methodology showed high quality for occlusion rate at four weeks and one to two years, moderate quality for nerve injury and peri-procedural pain, and low quality for EHIT. CONCLUSION: Vein occlusion rates after thermal vs. non-thermal endovenous ablation are similar. In the early post-operative period, non-thermal endovenous ablation demonstrated the advantages of less pain and less risk of nerve injury. Improvement in quality of life after both thermal and non-thermal endovenous ablation is similar.

Seasonal Variation in Acute Cholecystitis: An Analysis of Cholecystectomies Spanning Three Decades.

BACKGROUND: Seasonal variation in the occurrence of medical illnesses reflects the effect of the environment, provides insight into pathogenesis, and can assist health care administrators in allocating resources accordingly. Seasonal variation has been reported in various infectious and surgical diseases, but has been rarely studied in acute cholecystitis. Our objective was to study seasonal variation in acute cholecystitis at our institution. METHODS: We performed a retrospective analysis of patients who underwent cholecystectomy for acute cholecystitis from January 1988 to December 2018. Chi-square goodness-of-fit test was used to analyze seasonality of acute cholecystitis adjusting for variation in number of days between seasons. The number of days for seasons were taken as 92, 92, 91, and 90.25 for spring, summer, fall, and winter, respectively. RESULTS: Overall, 3924 patients underwent cholecystectomy for acute cholecystitis during the study period. The frequency of cholecystectomies performed varied between months (minimum February n = 259, maximum July n = 372, P < 0.001) and seasons (minimum winter n = 789, maximum summer n = 1101 P < 0.001). Age and gender distribution across months and seasons was similar (P > 0.05). CONCLUSIONS: Our findings confirm seasonal variation in occurrence of acute cholecystitis with summer season witnessing the most and the winter season encountering the least patients with acute cholecystitis. Validation of our findings through prospectively collected data at national level is the way forward.

Perioperative hypothermia in colorectal surgeries: are we doing enough to prevent it?

OBJECTIVE: To determine the incidence of hypothermia in patients undergoing colorectal surgery, and to identify factors that increase vulnerability to perioperative hypothermia. METHODS: The retrospective study was conducted at the Aga Khan University Hospital, Karachi, and comprised medical records from May 2012 to June 2017 related to all patients aged >16 years of either gender who underwent colorectal procedures. Analysis about predictors of perioperative hypothermia was done using Stata 12. RESULTS: Of the 100 patients, 69(69%) were males. The overall mean age was 50.2±16.7 years. Majority cases had elective presentation 72(72%). Incidence of perioperative hypothermia was noted in 74(74%) patients. Postoperative morbidity was 16(16%), while mortality was 4(4%). Elective presentation and hypothermia before surgery were significantly associated with occurrence of intraoperative hypothermia (odds ratio: 4.5 and 1.3 respectively). CONCLUSIONS: Perioperative incidence of hypothermia was found to be quite high despite appropriate measures. Factors responsible need to be explored and rectified.

Iatrogenic trauma following percutaneous and minimally invasive surgical interventions.

Technological progress has changed the landscape of surgical practice. Minimally invasive surgery (MIS) and percutaneous interventions (PC) are constantly replacing open procedures. This reduces hospital stay and allows quicker recovery. The application of MIS should follow the good medical practice dictum by Hippocrates i.e. "First do no harm". To remain abreast with new procedures, the medical personnel are required to update and enhance their knowledge and skill. To ensure safety, the innovations are rigorously tested and tried. The learning curve of MIS is shortened by simulator training and proctorship. Credentialing processes are in place to enhance safe delivery of care. Despite of all these measures MIS and PCI are associated with adverse effects. The purpose of this article is to overview the iatrogenic trauma associated with MIS and PCI in major surgical subspecialties.

Post-operative pain after laparoscopic ventral hernia repair, the impact of mesh soakage with bupivacaine solution versus normal saline solution: A randomised controlled trial (HAPPIEST Trial).

BACKGROUND AND AIMS: Early postoperative pain after laparoscopic ventral hernia repair remains a concern for patients. Local application of anaesthetic agent in the surgical dissection area can potentially overcome this problem. The objective of this study was to evaluate the impact of soaking mesh in 0.5% bupivacaine solution as compared to normal saline solution on the post-operative pain. METHODOLOGY: We conducted a parallel-design double-blind randomised controlled trial. Adult patients with uncomplicated ventral abdominal wall hernias were included in the trial. Mesh was soaked in 0.5% solution of bupivacaine before application in patients in the intervention arm, whereas it was soaked in normal saline solution for patients in the control arm. Post-operative pain was assessed by trained staff at 6 h and 24 h from surgery. It was graded on visual analogue scale (VAS) from 0 to 10. RESULTS: Trial was conducted from 16 November, 2015, to 15 September, 2017. During the study period, a total of 114 patients were randomised. Nine patients were excluded after randomisation. A total of 55 patients were analysed in the intervention arm and 50 patients were analysed in the control arm. Mean pain score at VAS at 6 h after laparoscopic ventral hernia repair in the intervention arm was 5.05 ± 1.2, whereas in the control arm, it was 5.54 ± 1.1 and the difference was statistically significant (P = 0.03-independent sample t-test). Mean pain score at VAS at 24 h after laparoscopic ventral hernia repair in the intervention arm was 3.16 ± 1.2, whereas in the control arm, it was 3.58 ± 1.4 and the difference was not statistically significant (P = 0.11-independent sample t-test). CONCLUSION: Soakage of mesh in 0.5% bupivacaine solution before application in laparoscopic ventral hernia repair significantly reduces early post-operative pain. TRIAL REGISTRATION: Trial was registered with clinicaltrials. gov (NCT03035617)URL: https://clinicaltrials. gov.

Telesurgery prospects in delivering healthcare in remote areas.

Feasibility and safety of performing remote surgery was first established by performing surgeries on pigs in later part of the 20th century. The first tele-robotic remote surgical system was set up in Canada in 2003 between two hospitals 400 kilometres away. The current review was planned to have a look at the current state of robotic surgery and its use in telesurgery. Literature search was conducted for articles related to "Robotic Surgery" and "Tele-Surgery". Our search included articles published in English literature, including case studies and review articles. We searched Google Scholar and PubMed to search relevant articles. Introduction of haptic feedback technology added significantly to safety robotic surgery. Tele-surgery, also called tele-robotics, combines the advantages of robotic surgery, including magnified view, augmented reality and improved ergonomics and dexterity, and provision of surgical care in remote areas and difficult-to-reach locations like spacecrafts and ships. Challenges, like cost, availability and legislations, remain to be addressed.

Template operative note, a better documentation.

Operative notes are a valuable part of patient's medical record, and carry the medico-legal significance. One way of improving it is to introduce the template form operative notes. Only few studies have been done worldwide to compare both the forms of operative notes. This cross-sectional study was conducted in the department of General Surgery, AKUH. This included the patients who underwent Laparoscopic cholecystectomy (Complying with inclusion criteria) from August 2013 till March 2014. Out of 24 patients, 19 were females. The completeness of data in template group was significantly better than traditional group (79.2% vs. 8.3%). There was no significant difference among the residents of different level (writing the notes) and the completeness of data in both the groups. Similarly the timing of day did not affect significantly on the completeness.

Risk of appendicitis in patients with incidentally discovered appendicoliths.

BACKGROUND: An appendicolith-related appendiceal obstruction leading to appendicitis is a commonly encountered surgical emergency that has clear evidence-based management plans. However, there is no consensus on management of asymptomatic patients when appendicoliths are found incidentally. The objective of this study was to determine the risk of appendicitis in patients with an incidental finding of the appendicolith. METHODS: A retrospective matched cohort study of patients with appendicolith discovered incidentally on computed tomographic scan from January 2008 to December 2014 at our institution was completed. The size and position of the appendicolith were ascertained. The study group was matched by age and gender to a control group. Both groups were contacted and interviewed regarding development of appendicitis. RESULTS: In total, 111 patients with appendicolith were successfully contacted and included in the study. Mean age was found to be 38 ± 15 y with 36 (32%) of the study population being females. Mean length of appendix was 66 ± 16 mm, and mean width was 5.8 ± 0.9 mm. Mean size of the appendicolith was 3.6 ± 1.1 mm (1.4-7.8 mm). Fifty-eight percent of appendicoliths was located at the proximal end or whole of appendix, 31% at mid area, and 11% at the distal end of appendix. All patients of the study and control groups were contacted, and at a mean follow-up of 4.0 ± 1.7 y, there was no occurrence of acute appendicitis in either group. CONCLUSIONS: Patients with incidentally discovered appendicolith on radiological imaging did not develop appendicitis. Hence, the risk of developing acute appendicitis for these patients does not seem higher than the general population.

Factors Associated with Premalignant Epithelial Changes in Chronic Calculous Cholecystitis: A Case-Control Study.

INTRODUCTION: Gallstones are known to be associated with premalignant changes in the gallbladder epithelium that range from atypical hyperplasia, metaplasia, dysplasia to carcinoma. Recognition of factors associated with these changes in patients with gallstones can potentially be helpful in identifying patients to whom prophylactic cholecystectomy can be offered to reduce the chances of developing carcinoma. OBJECTIVE: To identify factors associated with premalignant epithelial changes including atypical hyperplasia, metaplasia, and dysplasia in gallbladder mucosa in patients with chronic calculus cholecystitis. MATERIALS AND METHODS: This was retrospective case-control study conducted over a period of 10 years from 2004 to 2014. Cases were patients with reported histopathological premalignant epithelial changes along with chronic calculus cholecystitis, and controls were patients without premalignant epithelial changes but chronic calculus cholecystitis. Controls were twice the number of the cases. RESULTS: Over study period, 92 patients were reported to have premalignant epithelial changes on gall bladder histopathology for whom 184 controls were selected. Of cases, 61 (66%) patients had atypical hyperplasia, while metaplasia and dysplasia were present in 26 (28%) and 5 (5%) cases, respectively. Mean age was 47.5 ± 14.5 years, and 74% of the study population were female. Wall thickness of more than 3 mm (OR = 4.14, p value < 0.001) turned out to be statistically significant independent variables associated with premalignant lesions in gallbladder mucosa. CONCLUSION: Odds of premalignant epithelial change in gall bladder mucosa in patients with gall bladder wall thickness of more than 3 mm is four times the odds of patients with wall thickness less than 3 mm, and the effect is statistically significant. Prophylactic cholecystectomy should be considered for this group of patients.

Multiple Skip Incisions Versus Single Long Incision for Single-stage Basilic Transposition Arteriovenous Fistula: A Cohort Study.

BACKGROUND: Basilic vein transposition via single long incision is a renowned technique despite its known wound-related complications. Contrary to that, multiple skip incisions technique is thought to have relatively lower wound-related complications. But to the best of our knowledge, these 2 techniques have never been formally compared. Therefore, we conducted this study to compare both. MATERIAL AND METHODS: This was a retrospective cohort study. Patients who underwent basilic vein transposition arteriovenous fistula (AVF) from January 2011 till May 2016 at Aga Khan University Hospital, Pakistan were eligible for inclusion in the study. Study population was divided into 2 groups; one group comprising of patients who underwent fistula formation through single long incision and the other group had the procedure carried out via multiple skip incisions. Wound-related complications including wound infection and dehiscence, fistula maturation time, duration of surgery, and primary patency at a follow-up of 12 months were recorded. RESULTS: Both the groups were comparable regarding baseline variables. Incidence proportion of wound infection, hematoma, and dehiscence was higher in long incision group; however, it was statistically insignificant. Primary patency at 12 months in skip versus long incision group was 73.0% vs. 69.7% (P-value: 0.62). The mean maturation time for fistula was 42.8 ± 9.5 days and 44.3 ± 10.4 days in skip and long incision group, respectively (P-value:0.31). Duration of surgery was comparable in both. CONCLUSIONS: Although skip technique does not have significant benefit over long incision technique based on these results, but it is a valid alternative. Randomized control trial is required to better differentiate between these two.

Sensitivity and specificity of CT scan in small bowel obstruction among children.

OBJECTIVE: To determine the sensitivity and specificity of computed tomography scan for diagnosing small bowel obstruction among children. METHODS: The retrospective diagnostic test accuracy study was carried out at the Aga Khan University Hospital, Karachi, and comprised data of all patients aged 2-16 years who presented with clinical features of small bowel obstruction and underwent computed tomography scan of abdomen from January 2001 to December 2015Data was analyzed using SPSS19. RESULTS: Of the 98 subjects, 65(66.0%) were males and 33(34.0%) were females. Overall mean age of the patients was 7.67±4.33 years and mean duration of symptoms was 2.84±1.17 days. Sensitivity, specificity, positive and negative predictive values as well as accuracy of computed tomography scan was 97.4%, 81.8%, 94.9%, 90.0% and 93.9% respectively. CONCLUSIONS: CT scan was found to have a high sensitivity, fairly good specificity and accuracy in revealing small bowel obstruction. However, the scan is known to have its limitations in sub-acute intestinal obstruction and primary peritonitis.

Fistulotomy versus fistulectomy for simple fistula in ano: a retrospective cohort study.

OBJECTIVE: To compare fistulotomy with fistulectomy for wound healing, duration of surgery, post-operative pain, incontinence and recurrence in patients with fistula in ano. METHODS: This retrospective cohort study was conducted at the Aga Khan University Hospital, Karachi, and comprised data of adults who had undergone fistulotomy/fistulectomy for simple fistula in ano from January 2007 to August 2012. Data collection was done in August 2013 using questionnaire and telephonic interviews. Outcome variables like duration of wound healing, recurrence, incontinence, duration of surgery and post-operative pain were compared in both the groups. SPSS 19 was used for data analysis. RESULTS: Of the 192 cases, there were 96(50%) in each group. The mean age was 40.51 years (range: 21-72 years) in the fistulotomy group and 41.14 years (range: 21-66 years) in the fistulectomy group (p=0.66). Both groups were comparable for baseline demographic variables. The median duration of wound healing was shorter in the fistulotomy group 15 days (Interquartile range: 7-20 days) compared to the fistulectomy group 30 days (Interquartile range: 15-42 days) (p<0.001). The incidence of recurrence was comparable in fistulotomy vs. fistulectomy (3[3.12%] vs. 4[4.16%]; p=0.70). The incidence of incontinence was higher in fistulotomy compared to fistulectomy (5[5.3%] vs. 12[12.5%]; p=0.07). The severity of incontinence was also compared but the difference was insignificant (p=0.06). The median duration of surgery was significantly shorter in fistulotomy group 17 minutes (Interquartile range: 12-25 minutes) compared to fistulectomy group 25 minutes Interquartile range: 20-35 minutes (p<0.001). The median post-operative pain in the surgical day care unit and at the first follow-up in clinic was zero for both groups. CONCLUSIONS: Fistulotomy yielded better results than fistulectomy since it significantly decreased the duration of wound healing and duration of surgery without increasing the incidence of recurrence, incontinence and post-operative pain.

Role of early contrast enhanced CT scan in severity prediction of acute pancreatitis.

Severe pancreatitis occurs in approximately 15-25% of patients with acute pancreatitis. The objective of our study was to compare the CT Severity Index (CTSI) with a clinical score (BISAP score) to predict severity of acute pancreatitis. Forty-eight consecutive patients with acute pancreatitis who underwent contrast enhanced CT scan within 72 hours of presentation were included. Results of our study showed that both CTSI and BISAP score were reliable predictors of mortality (p value = 0.019 and <0.001 respectively) and need for mechanical ventilation (p value = .002 and .006 respectively). Positive predictive value of CTSI to predict recovery without intervention was 91.4% as compared to 78% for that of BISAP score. Receiver Operating Characteristics (ROC) Curves showed CT scan was superior to BISAP Score in predicting need of percutaneous or surgical intervention. Early CT scan may be utilized for prediction of clinical course of patients with acute pancreatitis.

Is Proximal Gastric Cancer A Different Entity From Distal Gastric Cancer? Anatomical Site Distribution Of Signet Ring Cell Carcinoma And Its Association With Helicobacter Pylori Infection.

BACKGROUND: Despite many known variables affecting the outcome, little is known about the impact of histology on the location of tumour and outcomes. The objective of our study was to describe pattern of gastric cancer at single centre and association with H. Pylori and Signet ring cell variant with site of tumour in stomach. METHODS: This was a cross sectional study conducted at the Department of Surgery of Aga Khan University Hospital, Karachi, Pakistan. A total of 105 patients who underwent surgery for gastric adenocarcinoma were classified to have a proximal, distal or whole stomach cancer. An association was determined between the tumour histology and helicobacter pylori infection with the location of tumour in the stomach. RESULTS: Proximal gastric cancer was present in 27 (25.7%) patients and distal gastric cancer was present in 69 (65.7%) patients. There were 9 (8.6%) patients in whom tumour involved the whole stomach. Fifty-two patients (49.5%) had signet ring cell variant of gastric carcinoma and these patients were more like to have higher grade and advanced stage. Further analysis showed that that odds of proximal gastric tumour to have signet ring cell histopathology was 3.22 as compared to distal gastric tumour (p=0.017). Helicobacter Pylori infection status did not have any significant association with either grade of tumour or stage at the time of presentation. CONCLUSIONS: Despite limitations our data suggests that proximal gastric cancer may be biologically different from distal gastric cancers in terms of frequency of signet ring cell histology.

A Model to Determine Value of Care Delivered at the Level of Individual Providers in an Organization.

Introduction: Value in health care has been defined as health outcomes achieved per dollar spent. The concept of value is a shift from the traditional volume-based health delivery system. The implementation of value-based health care has generally been at an institutional level. The objective of our study was to calculate and compare the value of health care delivered by nine individual surgeons at a single institution for laparoscopic cholecystectomies, at the level of the provider. Methods: Data were collected for laparoscopic cholecystectomies performed over 2 years from January 1, 2016, to December 31, 2017. Only elective cholecystectomies performed for noninflamed gall bladder were included in the analysis. Any patients admitted through the emergency department were excluded. Patients who had comorbidities requiring further workup after admission were also excluded. To the best of our knowledge, there is no published model for determining value at the level of the provider. Hence, we devised a formula to determine the value of health care provided by individual surgeons based on outcome 30 days after laparoscopic cholecystectomy: Value = Positive outcome score/Cost of care. Results: A total of 1840 cholecystectomies were performed by nine surgeons in the study period, out of which 1402 met the selection criteria. There was a significant variation in the value provided by different surgeons according to our model. Conclusion: Our proposed model differentiated the value provided by individual surgeons. Validation of the model on prospectively collected data is the way forward. The key points are: (1) There is a shift from volume-based healthcare to value-based healthcare (VBHC). (2) There is paucity of data about value provided by individual providers. (3) We propose a method of calculating and differentiating value provided by individual providers.

Association Between Perioperative Hypothermia and Surgical Site Infection After Elective Abdominal Surgery: A Prospective Cohort Study.

Introduction Surgical site infections (SSIs) account for 14-16% of nosocomial infections and are one of the major causes of increased morbidity, hospital stay, cost of care, and even mortality. Hypothermia as a risk factor for SSI is debated but there is lack of conclusive evidence. The present study explores the association of hypothermia with SSI. Methodology This is a prospective cohort study conducted on adult patients who underwent elective laparotomy. Patients were divided into two cohorts, the Hypothermia Cohort and the Normothermia Cohort, based upon episodes of hypothermia of <360C in the perioperative period. SSI was diagnosed based upon criteria defined by the Center for Disease Control and Prevention (CDC). Postoperative follow-up to detect SSI was done until 30 days after the operation. Results A total of 183 patients met the selection criteria and were included in the study. Ninety patients (49%) had perioperative hypothermia and were followed in the Hypothermia Cohort, while 93 patients (51%) who remained normothermic in the perioperative period were followed in the Normothermia Cohort. Mean age of the patients was 49.77 +/- 14.82 years. Almost two-thirds of the participants were females (63.9%). Patients who developed hypothermia were significantly older and had lower BMI. Also the proportion of female patients was significantly higher in the Normothermic Cohort. Rate of SSI was similar in both groups (10% versus 10.8%) with p-value of 0.867. Multivariable regression analysis also failed to show any significant association between hypothermia and SSI. Conclusion Our study failed to show any statistically significant association between hypothermia and surgical site infection.

Predictors of Poor Quality of Life after Primary Lower Limb Deep Venous Thrombosis: A Perspective from a Developing Nation.

Objective: We aimed to determine predictors of poor long term quality of life, using the VEINES Quality of Life (QOL) questionnaire, in patients with lower limb deep venous thrombosis (DVT). Material and Methods: This study included adult patients with primary lower limb DVT between January 2007 and December 2017. Post thrombotic syndrome (PTS) was assessed using the Villalta score and Quality of Life (QoL) by the VEINES quality of life questionnaire. Results: Our study included 125 patients, 57 (45.6%) of whom were males. The patient population's median age was 41 years (IQR: 34-47 years). The median follow up was 450 days (IQR: 390-1020 days). PTS occurred in 49 (39.2%) patients. Independent predictors of poor quality of life post DVT were progression to PTS, complete occlusion of vein, proximal (Ileofemoral) DVT, poor control of INR, poor compliance with compression stockings, severity of PTS, ileofemoral DVT and poor control of therapeutic anticoagulation. Conclusion: Predictors who are independently associated with poor quality of life post DVT are PTS, inability to maintain therapeutic anticoagulation and ileofemoral DVT.

Operative Techniques to Prevent Dialysis Access-associated Steal Syndrome in High-risk Patients Undergoing Surgery for Hemodialysis Access: A Systematic Review.

Up to 10% of patients suffer from various degrees of dialysis access-associated steal syndrome (DASS) after surgery for hemodialysis access. This systematic review was conducted to find out optimal intra-operative techniques to prevent DASS in high-risk patients. This systematic review is registered with PROSPERO (2017:CRD42017060804). It was conducted at Department of Surgery, Aga Khan University Hospital, Karachi. All types of studies conducted on intra-operative techniques to prevent DASS in high-risk population (Age > 60 years, female gender, diabetes mellitus, peripheral arterial disease and previous DASS) undergoing access creation from January 1990 till April 2019 were included in the systematic review. Thorough search was conducted on Pubmed, Google Scholar and Cochrane databases to identify relevant articles. Included studies reviewed for success of various techniques to prevent dialysis access steal syndrome are summarized. Out of 125 studies in the initial search, six met the inclusion criteria. Five were retrospective case series while one was a case report. The largest study sample size was 32. All but one study had arterio-venous access creation on an arm. "Proximalization of arterial inflow" was described in three and "prophylactic distal revascularization and interval ligation (DRIL) procedure" in two studies to prevent DASS. Only one patient out of these studies developed DASS at an overall follow-up of 7-42 months. Proximalization of inflow has been reported as the most common procedure performed to prevent DASS followed by extension technique and DRIL procedure. All three procedures have satisfactory outcome with no clear superiority of one over the other.

The Characteristics of Appendicoliths Associated with Acute Appendicitis.

Introduction Differences between appendicoliths associated with appendicitis and those found incidentally have not been studied. The objective of this study was to determine the characteristics of appendicoliths that are associated with acute appendicitis. Methods A cross-sectional study of patients with appendicoliths identified on computed tomographic (CT) scan from January 2008 till December 2014 was conducted. Patients were divided into two group: appendicitis and appendicoliths (AA) and incidentally discovered appendicoliths (IA). Results Overall, 321 patients were included in the study. Of these, 103 (32%) patients were in the AA group while 218 (68%) patients were in the IA group. Both groups were similar in age and gender distribution. Significantly greater proportion of patients in the AA group had more than one appendicolith [AA vs. IA: 63 (62%) vs. 82 (38%), p < 0.001], appendicolith location at the base [AA vs. IA: 34 (33%) vs. 33 (15%), p < 0.001] and appendicolith diameter of 5 mm or more [AA vs. IA: 71 (69%) vs. 28 (13%), p < 0.001]. On multivariate analysis, more than one appendicolith [Odds ratio (OR): 1.9, 95% CI: 1.1-3.4; p = 0.02] and diameter of 5 mm or more (OR: 13, 95% CI: 7.1-23.6; p < 0.001) were independently associated with acute appendicitis. Conclusion Multiple appendicoliths and appendicoliths larger than 5 mm are associated with acute appendicitis.

Factors Associated with Complicated Appendicitis: View from a Low-middle Income Country.

Introduction Factors associated with complicated appendicitis have been inconsistently identified. Moreover, studies are lacking from low and low-middle countries where access to surgical care is limited. Our objective was to identify factors predicting complicated appendicitis as diagnosed intraoperatively in a low-middle income country hospital. Methodology Retrospective case-control study of patients who underwent laparoscopic appendectomy from 01/2008 to 12/2015 was completed. Based on intraoperative diagnosis of complicated appendicitis, patients were divided into two groups; those with complicated appendicitis (CA) and those who had non-complicated appendicitis (NCA). CT scans were further reviewed to identify presence of appendicolith. Result Of the 442 patients included, 88 (20%) patients were in the CA group while 354 (80%) patients were in the NCA group. Patients in the CA group were older [CA vs. NCA: 34.6 ± 14 vs. 30.4 ± 11.5; p-value < 0.001], had symptoms for longer duration [CA vs. NCA: 2 ± 1.2 vs. 1.5 ± 0.8; p-value: 0.001] and had a greater proportion of patients with appendicoliths [CA vs. NCA: 37 (42%) vs. 84 (23.7%); p-value: 0.001]. On multivariable regression analysis, patients with complicated appendicitis had greater odds of having appendicoliths (OR: 2.4, 95% CI: 1.4-4.07; p-value < 0.001) and symptoms for a longer duration (OR: 1.57, 95% CI: 1.25-1.97; p-value < 0.001). Conclusion Patients with complicated appendicitis had greater odds of having appendicoliths and symptoms for a longer duration. Further studies are warranted in low and low-middle income countries to gauge the impact delay in presentation and intervention has on appendicitis and its outcomes.