Boris Kirshtein

Soroka Medical Center, Be'er Sheva`, Southern District, Israel

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Publications (47)97.95 Total impact

  • Adi Manor, Boris Nemetz, Zvi Perry, Boris Kirshtein
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    ABSTRACT: Background: Long-term outcomes of laparoscopic gastric banding (LGB) related to depression and predictors of changes in depression are still unclear. Our goal was to investigate signs of depression after LGB. Methods: Two hundred three patients who underwent LGB for treatment of morbid obesity in our department between January 1997 and December 2008 were investigated, using the Patient Health Questionnaire 9 (PHQ-9) to assess and measure the severity of depression following surgery. Additional data was collected from patients’ charts and telephone questionnaire and included demographic data, psychiatric illness and treatment before surgery, BMI before LGB and at the time of interview, % excess weight loss (%EWL), and primary bariatric and additional surgery for repair, reposition, and exchange of the band. Results: A significant correlation was found between PHQ-9 score and weight loss after surgery measured by %EWL (p<0.001) and selfesteem-after the surgery (p<0.01). Self-esteem after the surgery was significantly correlated with %EWL (p=0.001). Men’s self-esteem before surgery was significantly higher than women’s (p=0.037), while selfesteem after surgery was the same in both groups. PHQ-9 score was significantly higher in women than in men, 5.34 and 3.39, respectively (p=0.01). Conclusions: Among predictive variables checked for changes in symptoms of depression, weight loss had the greatest impact on symptoms of depression and quality of life. Success at weight loss correlated with lower risk for developing symptoms of depression, higher self-esteem after surgery, and greater satisfaction from the procedure. We recommend closed follow-up and psychologist involvement for women because they had a greater tendency for developing symptoms of depression.
    Journal of Obesity and Bariatrics. 10/2014; 1(1):01-04.
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    ABSTRACT: More than 11,000 articles lauding alternative medicine appear in the PubMed database, but there are only a few articles describing the complications of such care. Two patients suffering from complications of alternative medicine were treated in our hospital: one patient developed necrotizing fasciitis after acupuncture, and the second developed an epidural hematoma after chiropractic manipulation. These complications serve as a clarion call to the Israeli Health Ministry, as well as to health ministries around the world, to include complementary medicine under its inspection and legislative authority.
    Rambam Maimonides medical journal. 07/2014; 5(3):e0019.
  • Udit Gibor, Eric Ohana, Dubilet Elena, Boris Kirshtein
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    ABSTRACT: We present a case of a 20-year-old female who was admitted to our department for an elective inguinal hernia repair. An oval-shaped mass was found in the hernia sac during the surgery that was suspected to be an ovary. Histological examination revealed testicular tissue. Further evaluation confirmed testicular feminization. She underwent laparoscopic orchiectomy and hernia repair from the contralateral side 3 months later.
    Hernia 05/2014; · 2.09 Impact Factor
  • Boris Kirshtein, Solly Mizrahi
    The American surgeon 02/2014; 80(2):209-210. · 0.92 Impact Factor
  • Y Azari, Z Perry, B Kirshtein
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    ABSTRACT: The aim of the study was to determine risk factors for morbidity and mortality in patients older than 80 years, compared to younger patients, who undergo emergency strangulated groin hernia repair. This is a retrospective study of patients who underwent emergency surgery for strangulated groin hernia repair during 14 years. Patients were divided by age into three groups: younger than 59 (group A), 60-79 (group B), and older than 80 years (group C). Patient data included age, gender, hernia type, sac content, comorbidities, and surgical outcomes. Two hundred patients were included in the study. There was no difference between groups in sex, hernia localization, and the type of repair. More comorbidities were found in octogenarians compared to the younger patients [group C vs. D (A + B)]. Small bowel resections and ICU admissions were more frequent in patients over 60 years compared to younger patients, 19.6 and 32.7 % vs. 1.7 and 0 %, respectively. Surgery was longer in group B. The rate of postoperative complications, repeated surgery, length of admission, and mortality were significantly higher in octogenarian (group C). Multivariate analysis found that age is a significant factor in the occurrence of non-surgical postoperative complications, but not in surgical complications. Emergency surgery for strangulated hernia repair in patients over 80 years is more complicated than in younger patients, mostly due to the existing comorbidities. In order to reduce the high morbidity and mortality rates in emergency surgery associated with this age group, elective hernia surgery in elderly should be considered in selected patients with severe symptoms affecting their daily life.
    Hernia 12/2013; · 2.09 Impact Factor
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    ABSTRACT: Abstract Background: The most efficient approach to diagnosis of acute appendicitis (AA) continues to be a challenge. We sought to determine diagnostic accuracy, sensitivity, and specificity of computed tomography (CT), ultrasonography, and laparoscopy and compared benefits and advantages in patients with suspected AA. Patients and Methods: A retrospective review of all patients who had laparoscopic surgery between January 2000 and December 2009 was conducted. Preoperative information, surgery results, and outcomes were compared. Results: Of 887 laparoscopic procedures performed for suspected AA, 254 (29%) patients had preoperative imaging: 171 CT scans and 83 ultrasound (US) scans. Overall, 754 patients underwent laparoscopic appendectomy (LA), and 133 underwent diagnostic laparoscopy (DL). DL was negative in 23 patients. The sensitivity of LA was higher than that of CT (98% versus 94%), whereas the specificity of LA was higher than that of CT and US in complicated appendicitis and in women. Complicated AA was significantly less common in patients who underwent laparoscopic surgery compared with patients evaluated by preoperative CT. Comparing the kappa value between the preoperative diagnosis by imaging and DL, a weak agreement was found (κ=0.234±0.057). Conclusions: Laparoscopy achieves early and accurate diagnosis of AA and can reduce the incidence of perforated appendicitis. Abdominal CT remains a valuable diagnostic tool. DL is useful in the early stages of the diagnostic work-up and avoids unnecessary exposure to radiation of the abdomen and pelvis in young women.
    Journal of Laparoendoscopic & Advanced Surgical Techniques 10/2013; · 1.19 Impact Factor
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    ABSTRACT: Obesity is a key risk factor for the development of colon cancer; however, the endocrine/paracrine/metabolic networks mediating this connection are poorly understood. Here we hypothesize that obesity results in secreted products from adipose tissue that induce malignancy-related metabolic alterations in colon cancer cells. Human HCT116 colon cancer cells, were exposed to conditioned media from cultured human adipose tissue fragments of obese vs. non-obese subjects. Oxygen consumption rate (OCR, mostly mitochondrial respiration) and extracellular acidification rate (ECAR, mostly lactate production via glycolysis) were examined vis-à-vis cell viability and expression of related genes and proteins. Our results show that conditioned media from obese (vs. non-obese) subjects decreased basal (40%, p<0.05) and maximal (50%, p<0.05) OCR and gene expression of mitochondrial proteins and Bax without affecting cell viability or expression of glycolytic enzymes. Similar changes could be recapitulated by incubating cells with leptin, whereas, leptin-receptor specific antagonist inhibited the reduced OCR induced by conditioned media from obese subjects. We conclude that secreted products from the adipose tissue of obese subjects inhibit mitochondrial respiration and function in HCT116 colon cancer cells, an effect that is at least partly mediated by leptin. These results highlight a putative novel mechanism for obesity-associated risk of gastrointestinal malignancies, and suggest potential new therapeutic avenues.
    PLoS ONE 09/2013; 8(9):e74843. · 3.53 Impact Factor
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    ABSTRACT: INTRODUCTION: When adhesions, internal hernias, malignant intra- and retro-peritoneal neoplasms are excluded in patients presenting with new onset constipation and abdominal mass appearance after previous abdominal surgery, other causes must be considered. PRESENTATION OF CASE: Giant enteroliths formed within ileal diverticula in the site of small bowel anastomosis may extrude and produce a palpable abdominal lump. Recent experience with such a patient is the basis of this report. DISCUSSION: Ileal diverticula with interior enteroliths may be suspected in patients presenting with an abdominal lump following previous small bowel resection. CONCLUSION: Open or laparoscopic assisted surgical resection of the involved segment is the treatment of choice.
    International journal of surgery case reports. 02/2013; 4(4):385-387.
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    ABSTRACT: Context:Adipose tissue macrophages (ATMs) are thought to engulf the remains of dead adipocytes in obesity, potentially resulting in increased intracellular neutral lipid content. Lipid-laden macrophages (foam cells [FCs]) have been described in atherosclerotic lesions and have been proposed to contribute to vascular pathophysiology, which is enhanced in obesity.Objective:The objective of this study was to determine whether a subclass of lipid-laden ATMs (adipose FCs) develop in obesity and to assess whether they may uniquely contribute to obesity-associated morbidity.Setting and Patients:Patients undergoing elective abdominal surgery from the Beer-Sheva (N = 94) and the Leipzig (N = 40) complementary cohorts were recruited. Paired abdominal subcutaneous (SC) and omental (Om) fat biopsy samples were collected and analyzed by histological and flow cytometry-based methods. Functional studies in mice included coculture of ATMs or FCs with adipose tissue.Results:ATM lipid content was increased 3-fold in Om compared with SC fat, particularly in obese persons. FCs could be identified in some patients and were most abundant in Om fat of obese persons, particularly those with intra-abdominal fat distribution. Stepwise multivariate models demonstrated depot differential associations: fasting glucose with SC FCs (β = 0.667, P < .001) and fasting insulin (β = 0.413, P = .006) and total ATM count (β = 0.310, P = .034) with Om FCs in models including age, body mass index, high-density lipoprotein cholesterol, and high-sensitivity C-reactive protein. When cocultured with adipose explants from lean mice, FCs induced attenuated insulin responsiveness compared with adipose explants cocultured with control ATMs with low lipid content.Conclusions:FCs can be identified as an ATM subclass in human SC and Om adipose tissues in 2 independent cohorts, with distinct depot-related associations with clinical parameters. Once formed, they may engage in local cross-talk with adipocytes, contributing to adipose insulin resistance.
    The Journal of Clinical Endocrinology and Metabolism 01/2013; · 6.31 Impact Factor
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    ABSTRACT: The current study presents our experience with the introduction of self-expanding metal stents (SEMS) and assesses success rate, clinical outcomes, and complications. We conducted a historical cohort study reviewing endoscopic SEMS insertions between 2000 and 2010. Overall, 51 patients underwent stent insertion: 38 with an emergent procedure and 13 with a semielective procedure. SEMS was inserted in 27 men and 24 women with a mean age of 68.9 years. Colonic malignancy was the cause of obstruction in all patients. The tumors were localized in the rectosigmoid in 33 (64.7%), in the left colon in 16 (31.4%), and in the right colon in two cases (3.9%). Endoscopic SEMS insertion was technically successful in 68.4 per cent of patients in an emergency and in 84.6 per cent of patients in a semielective setting. Successful stent insertion allowed a "bridge to surgery" in 23 and palliative care in 14 patients. Stent migration occurred in three, obstruction in two, and bowel perforation in three cases. Nineteen patients in the emergent group underwent a subsequent successful semielective colonic resection within 8.1 days (range, 2 to 30 days) of stent insertion. There were two cases (11.1%) of major and four cases (22.2%) of minor postoperative complications in this series. No anastomotic leaks were observed. Mean postoperative hospitalization was 10.1 days (range, 5 to 45 days). Endoscopic stent insertion is a relatively simple procedure providing an effective first-line treatment for relief of symptoms of acute malignant colorectal obstruction, preventing acute perforation, and serving either as a preoperative procedure (allowing lower morbidity semielective surgery) or as palliative care.
    The American surgeon 01/2013; 79(1):30-4. · 0.92 Impact Factor
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    ABSTRACT: BACKGROUND: Gastric perforations are one of the intraoperative complications of laparoscopic gastric banding (LAGB). Delayed diagnosis can increase the mortality and morbidity rates. METHODS: Retrospective analysis of surgery outcome and long-term follow-up of the patients with gastric perforations during primary LAGB and revisional band procedures was performed. RESULTS: Twenty-four patients with gastric perforations were identified during 15 years of LAGB surgeries. Half of these had primary LAGB and half had revisional procedures (five emergent and seven elective). Gastric tear was found at surgery in 19 patients; the band was preserved and LAGB was completed in 18 of these. Five patients had delayed diagnosis and underwent re-exploration 24-72 h after surgery. During the surgery, 23 anterior, 8 posterior, 1 esophageal, and 1 small bowel tears were found. Laparoscopic repair was successful in 19 (83 %) cases. The mean surgery time and mean hospital stay were 56.3 min and 7.8 days, respectively. Morbidity and mortality rates were 25 and 4.1 %, respectively. Two patients underwent later band replacement following removal. Band erosion was observed in one patient. At least 17 patients had no complications during mean follow-up of 52.2 months. CONCLUSIONS: Band preservation is recommended following primary repair of gastric tear. Early intra- and postoperative diagnosis of gastric tear in LAGB is essential for successful management of this iatrogenic injury and decreases occurrence of complications.
    Obesity Surgery 09/2012; · 3.74 Impact Factor
  • Boris Kirshtein, Eric M. Haas
    Minimally Invasive Surgery. 01/2012; 2012.
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    ABSTRACT: The goal of the present research was to study patients who underwent laparoscopic total extraperitoneal repair using slit and non-slit mesh placement. Patients who underwent laparoscopic inguinal hernia repair in our hospital between 2005 and 2009 were interviewed and examined. Surgery outcome, hernia recurrence, postoperative pain and time to return to normal physical activities, and surgery satisfaction were compared. During the study period 389 consecutive patients underwent laparoscopic groin hernia repair: 387 by the total extraperitoneal (TEP) approach and 2 by the TAPP approach. Six of the TEP patients were converted to TAPP. Eighty-seven patients in the TEP group had slit mesh placement and 300 had non-slit mesh placement. Mean follow-up was 36 months (range: 6-66 months). At follow-up, 387 patients responded to a request for interview and 277 were examined. The overall recurrence rate was 4.7%, the incidence of constant postoperative pain was 1.3%, the presence of permanent testicular pain was 2.8%, and patient satisfaction with the surgery was 94.5%. A significantly lower recurrence rate was found in the slit mesh group than in the non-slit group (0.6% versus 5.9%; p < 0.003). There was no difference in the length of time until return to normal activities, patient satisfaction, and postoperative pain between the groups. Surgery time and the occurrence of testicular pain were significantly greater in the anatomic group. Total extraperitoneal inguinal hernia repair with slit mesh placement is a safe technique with a very low recurrence rate and is superior to non-slit mesh positioning.
    World Journal of Surgery 09/2011; 35(11):2382-6. · 2.35 Impact Factor
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    ABSTRACT: Abdominal cocoon is a rare cause of intestinal obstruction usually diagnosed incidentally at laparotomy. The cause and pathogenesis of the condition have not been elucidated. It primarily affects adolescent girls living in tropical and subtropical regions. Several earlier cases have been reported in males. We describe an 82-year-old man presenting with small bowel obstruction without history of previous abdominal surgery. He was treated by warfarin following aortic valve replacement. Abdominal cocoon was detected at laparotomy. Excision of membrane and lysis of adhesions led to relief of obstruction. Abdominal cocoon is a rare pathology that may be found in all kinds of populations. It may be a rare form of small bowel obstruction diagnosed during surgery in elderly patients.
    Indian Journal of Surgery 01/2011; 73(1):73-5. · 0.27 Impact Factor
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    ABSTRACT: Laparoscopic adjustable gastric banding (LAGB) has gained popularity for treatment of morbid obesity worldwide. With the widespread use of LAGB, an increasing number of medical specialists are dealing with the potentially life-threatening complications of this procedure. More than 6,000 LABGs were performed by our surgeons during the past 11 years, during which various complications of LAGB were observed, including band slippage, erosion, gastric pouch dilatation, port infection, and disconnection. Complicated cases requiring emergency surgical intervention were collected. We present and discuss the diagnostic and therapeutic possibilities of these complications. Fourteen cases were identified: six with acute band slippage, two with small bowel obstruction, and one each with band slippage and fetal intrauterine growth restriction during the 36th week of pregnancy, perforated gastric ulcer, upper gastrointestinal bleeding, connecting tube penetration into a stomach ulcer, connecting tube penetration into the colon, and port disconnection. All patients had gastrointestinal symptoms at admission. Band reposition was performed in four cases; eight patients required band removal for band contamination. The band was open and still in place in one case. Open and laparoscopic gastric resections for necrotic stomach were performed in two cases. Suture of perforated gastric ulcer was combined with cesarean section. Connection of disconnected port and suture of colonic and gastric penetrations and perforation of fundus were completed laparoscopically. Small bowel resection and enterotomy required an additional minimal laparotomic incision. No mortality was observed in our series. Four patients elected to have the LAGB reinserted at a later time. The increasing number of bariatric procedures has resulted in emergency physicians' knowledge of serious complications of LAGB that require urgent surgical intervention. Treatment algorithms require early diagnosis and a surgical approach to solving these conditions.
    Obesity Surgery 11/2010; 20(11):1468-78. · 3.74 Impact Factor
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    ABSTRACT: Autophagy is a housekeeping mechanism, involved in metabolic regulation and stress response, shown recently to regulate lipid droplets biogenesis/breakdown and adipose tissue phenotype. We hypothesized that in human obesity autophagy may be altered in adipose tissue in a fat depot and distribution-dependent manner. Paired omental (Om) and subcutaneous (Sc) adipose tissue samples were used from obese and nonobese (n = 65, cohort 1); lean, Sc-obese and intraabdominally obese (n = 196, cohort 2); severely obese persons without diabetes or obesity-associated morbidity, matched for being insulin sensitive or resistant (n = 60, cohort 3). Protein and mRNA levels of the autophagy genes Atg5, LC3A, and LC3B were increased in Om compared with Sc, more pronounced among obese persons, particularly with intraabdominal fat accumulation. Both adipocytes and stromal-vascular cells contribute to the expression of autophagy genes. An increased number of autophagosomes and elevated autophagic flux assessed in fat explants incubated with lysosomal inhibitors were observed in obesity, particularly in Om. The degree of visceral adiposity and adipocyte hypertrophy accounted for approximately 50% of the variance in omental Atg5 mRNA levels by multivariate regression analysis, whereas age, sex, measures of insulin sensitivity, inflammation, and adipose tissue stress were excluded from the model. Moreover, in cohort 3, the autophagy marker genes were increased in those who were insulin resistant compared with insulin sensitive, particularly in Om. Autophagy is up-regulated in adipose tissue of obese persons, especially in Om, correlating with the degree of obesity, visceral fat distribution, and adipocyte hypertrophy. This may co-occur with insulin resistance but precede the occurrence of obesity-associated morbidity.
    The Journal of Clinical Endocrinology and Metabolism 11/2010; 96(2):E268-77. · 6.31 Impact Factor
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    ABSTRACT: Laparoscopic appendectomy (LA) can be used as a training model for the start of the independent experience of young residents. We tried to evaluate whether LA is a risk factor for patients when it is done by novice surgeons during the different steps of their training. A retrospective study of all the patients who underwent LA in our department between 2000 and 2008 was conducted. The patients were operated on by novice surgeons, chief residents, and senior surgeons. Preoperative variables were compared, as well as surgical outcomes and complications. During the study period, 477 LA, were performed on 320 women and 157 men, with a mean age of 39 years. In 11 cases (2.3%), the operation was converted. No difference was found in preoperative patient status. There was no difference between groups in the rate of accurate preoperation diagnosis, in comparison with the pathologic report. The rates of conversion, postoperative complications, and negative appendectomies were similar between residents and seniors. These findings were also found in a subgroup analysis, in which we compared each group. There is no additional risk in a LA done by a resident, whether a chief or a novice. LA is a good model for training young surgeons in laparoscopic surgery: It enables the young surgeon to engage and lead a real case and does not imbue any risk upon the patient.
    Journal of Laparoendoscopic & Advanced Surgical Techniques 06/2010; 20(5):447-50. · 1.19 Impact Factor
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    ABSTRACT: Laparoscopic adjustable gastric banding (LAGB) has been popularized as an effective, safe, minimally invasive surgical technique for the treatment of morbid obesity. We performed a pilot study to evaluate gastric emptying of semisolid meals and antral motility following LAGB. Gastric emptying half-time was compared in normal volunteers and morbidly obese patients before and 6-12 months after LAGB using sulfur colloid-labeled semisolid meals. There was no difference in mean age between groups. Women were prevalent in the group of obese patients. BMI was higher in patients before surgery (p < 0.001). Patients following LAGB demonstrated prolonged gastric pouch emptying (T1/2 = 36.6 +/- 9.8 min) compared to subjects without surgery (23.8 +/- 4.7 min) and healthy volunteers (22.8 +/- 6.8 min; p < 0.001). Similar gastric contractility was found all groups (3.3 +/- 0.4; p = 0.968). No cases of band slippage or pouch dilatation were observed during mean follow-up of 11.4 months. A standard normal gastric pouch emptying rate of semisolids in asymptomatic patients after LAGB was established. Postoperative prolongation of gastric emptying is a matter of mechanical delay without gastric pouch denervation. This study provides a first step of future functional evaluation of complications following this type of bariatric surgery.
    Obesity Surgery 07/2009; 19(9):1270-3. · 3.74 Impact Factor
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    ABSTRACT: Acute appendicitis (AA) in elderly patients (60 years of age and older) is a challenging problem associated with significant morbidity and mortality when perforation is present. We hypothesized that laparoscopic appendectomy (LA) would enable an earlier correct diagnosis and have advantages in elderly patients. We performed a retrospective review of patients who underwent laparoscopic appendectomy for suspected AA. Data of elderly patients were compared to data of younger patients (18 to <60 years of age). Fifty-four LA were performed in elderly patients and 423 in younger patients. Patients over the age of 60 years had more co-morbidities and required more frequent use of anticoagulants. Preoperative imaging (ultrasound or computerized tomography) was significantly more frequent in elderly patients (36% versus 15%), and was associated with a higher rate of confirmation of acute appendicitis (78% versus 55%), which allowed a decrease in the rate of negative surgical explorations to 4.1% in elderly patients compared to 10.2% in younger patients. Complicated appendicitis and conversions were more frequent in the elderly patients. This resulted in prolonged operative time and longer hospital stay for this group. The overall complication rate was equivalent in the two groups, without differences in the occurrence either of infectious complications or of complications related to surgical site. There were no deaths following appendectomy in our series. Laparoscopic appendectomy is safe in the elderly population and is not associated with any increase in morbidity. The high incidence of complicated appendicitis in elderly patients affects operative time and length of hospital stay following laparoscopic appendectomy, and it can also lead to an increased rate of conversion to an open procedure. Use of preoperative abdominal computerized tomography scan is mandatory in elderly patients to provide an early diagnosis and to decrease unnecessary surgical exploration when acute appendicitis is suspected.
    World Journal of Surgery 02/2009; 33(5):918-22. · 2.35 Impact Factor
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    ABSTRACT: Use of laparoscopic appendectomy (LA) remains controversial during pregnancy because data regarding procedure safety are limited. The outcome of LA in pregnant women was evaluated and compared to results of open surgery. Between January 1997 and December 2007, 42 pregnant women (mean age 24 years [range: 19-40 years]; range of gestation: 5-25 weeks) underwent appendectomy for suspected acute appendicitis: 23 laparoscopic (LA) and 19 open appendectomies (OA). Retrospective review of medical charts included preoperative information, surgery results, and outcome of the pregnancy. There was no difference between groups in surgery delay following arrival at the hospital. All procedures, except one case of Meckel's diverticulitis, were completed laparoscopically without need for conversion. Acute appendicitis was found in 19 cases and Meckel's diverticulitis in one case during LA (87%) and in 18 cases (95%) during OA. Complicated appendicitis was found in 7 (30%) pregnant women in the LA group and 1 (5%) in the OA group. Five women with normal preoperative abdominal ultrasonography had acute appendicitis (2 in the OA group and 3 in the LA group). The laparoscopic procedure was performed more often by senior surgeons (70% of cases), and OA was more commonly done by residents (47% of cases). There were no intraoperative or postoperative complications recorded. The length of postoperative hospital stay was slightly prolonged after LA-2.4 days versus 1.4 day after OA. There was one fetal loss in each group, 1 and 2 months after the operation. Laparoscopic appendectomy is safe and effective during pregnancy and is associated with good maternal and fetal outcome.
    World Journal of Surgery 02/2009; 33(3):475-80. · 2.35 Impact Factor

Publication Stats

427 Citations
97.95 Total Impact Points


  • 2004–2014
    • Soroka Medical Center
      • Department of Surgery A
      Be'er Sheva`, Southern District, Israel
  • 1999–2013
    • Ben-Gurion University of the Negev
      • Division of Surgery
      Beersheba, Southern District, Israel
  • 2007
    • University of Ottawa
      • Department of Surgery
      Ottawa, Ontario, Canada