Acute Appendicitis During Pregnancy: Different from the Nonpregnant State?

Early Diagnosis of Acute Appendicitis in the Second Trimester of Pregnancy Based on Non-typical Clinical Findings: Report of a Rare Case and a Mini-Review of the Literature

Acute appendicitis is the most common non-obstetric reason for exploratory laparotomy during pregnancy. This case report involves a primigravida patient who presented to the emergency department of the General Hospital of Trikala at 15 weeks of gestation due to diffuse abdominal pain, primarily in the epigastric region. She also reported watery bowel movements. The ongoing atypical clinical symptoms, along with elevated inflammatory markers, strongly indicated a diagnosis of acute appendicitis. An immediate exploratory laparotomy was performed, during which acute localized inflammation of the appendix was found, leading to an appendectomy. Histological examination confirmed the diagnosis of acute appendicitis. The patient reported pain relief immediately after the surgery. On the fourth postoperative day, she was discharged without any signs of a threatened second-trimester miscarriage. At 39 gestational weeks, she delivered by elective cesarean section due to breech presentation. This paper discusses the case and highlights the significant challenges in the early diagnosis and management of acute appendicitis during pregnancy, emphasizing the importance of preventing potentially life-threatening complications for both the mother and the fetus.

Validation of the Appendicitis Inflammatory Response (AIR) score during pregnancy: A nested case-control study

OBJECTIVES

Appendicitis poses diagnostic challenges. A correct diagnosis is important during pregnancy to avoid unnecessary surgery on the one hand and delayed surgery on the other hand, as both may negatively affect pregnancy outcomes. Clinical scores for risk-stratified management of suspected appendicitis are well established in adults but have not been validated during pregnancy. This nested case-control study evaluated the diagnostic accuracy of the Appendicitis Inflammatory Response (AIR) score and imaging during pregnancy.

METHODS

By cross-linking national Swedish health registries from a defined geographical area, we identified a cohort of 154 women who underwent appendectomy for suspected appendicitis during pregnancy and a matched cohort of 232 pregnant women admitted for acute abdominal pain and suspected appendicitis but with a discharge diagnosis of nonspecific abdominal pain (NSAP). All variables were extracted from medical records. The diagnostic value of AIR score and imaging was estimated for patients with a final diagnosis of appendicitis compared with patients with negative appendectomy and NSAP patients.

RESULTS

The final diagnoses for the operated patients were uncomplicated and complicated appendicitis in 49.4% and 26.6%, respectively, and negative appendectomy in 24.0%. Nearly half of all the patients underwent diagnostic imaging (41%), mainly by ultrasonography. The sensitivity and specificity of diagnostic imaging were 44.9% (95% CI 32.9%-57.4%) and 42.2% (95% CI 31.9%-53.1%), respectively. The area under the receiver operating characteristic curve of AIR score was 0.88 (95% CI 0.84-0.92) for all appendicitis and 0.90 (95% CI 0.84-0.95) for complicated appendicitis. The sensitivity for complicated appendicitis was 100% at a score of ≥4. The specificity for all appendicitis was 97% at a score of ≥9.

CONCLUSIONS

The results of this study suggest that the AIR score may be a suitable diagnostic tool for risk stratification of pregnant women with abdominal pain and suspected appendicitis but further validation among pregnant women is needed.

Adverse Fetal Outcomes and Maternal Mortality Following Nonobstetric Abdominopelvic Surgery in Pregnancy: A Systematic Review and Meta-analysis

OBJECTIVE

To quantify the absolute risks of adverse fetal outcomes and maternal mortality following nonobstetric abdominopelvic surgery in pregnancy.

SUMMARY BACKGROUND DATA

Surgery is often necessary in pregnancy, but absolute measures of risk required to guide perioperative management are lacking.

METHODS

We systematically searched MEDLINE, EMBASE, and EvidenceBased Medicine Reviews from January 1, 2000, to December 9, 2020, for observational studies and randomized trials of pregnant patients undergoing nonobstetric abdominopelvic surgery. We determined the pooled proportions of fetal loss, preterm birth, and maternal mortality using a generalized linear random/mixed effects model with a logit link.

RESULTS

We identified 114 observational studies (52 [46%] appendectomy, 34 [30%] adnexal, 8 [7%] cholecystectomy, 20 [17%] mixed types) reporting on 67,111 pregnant patients. Overall pooled proportions of fetal loss, preterm birth, and maternal mortality were 2.8% (95% CI 2.2-3.6), 9.7% (95% CI 8.3-11.4), and 0.04% (95% CI 0.02-0.09; 4/10,000), respectively. Rates of fetal loss and preterm birth were higher for pelvic inflammatory conditions (eg, appendectomy, adnexal torsion) than for abdominal or nonurgent conditions (eg, cholecystectomy, adnexal mass). Surgery in the second and third trimesters was associated with lower rates of fetal loss (0.1%) and higher rates of preterm birth (13.5%) than surgery in the first and second trimesters (fetal loss 2.9%, preterm birth 5.6%).

CONCLUSIONS

Absolute risks of adverse fetal outcomes after nonobstetric abdom- inopelvic surgery vary with gestational age, indication, and acuity. Pooled estimates derived here identify high-risk clinical scenarios, and can inform implementation of mitigation strategies and improve preoperative counselling.

Varying negative appendectomy rates after laparoscopic appendectomy: a systematic review and meta-analysis

PURPOSE

Appendicitis is a common cause of acute abdominal pain, and treatment with laparoscopy has become increasingly common during the past two decades. Guidelines recommend that normal appendices are removed if operated for suspected acute appendicitis. It is unclear how many patients are affected by this recommendation. The aim of this study was to estimate the rate of negative appendectomies in patients undergoing laparoscopic surgery for suspected acute appendicitis.

METHODS

This study was reported following the PRISMA 2020 statement. A systematic search was conducted in PubMed and Embase for retrospective or prospective cohort studies (with n ≥ 100) including patients with suspected acute appendicitis. The primary outcome was the histopathologically confirmed negative appendectomy rate after a laparoscopic approach with a 95% confidence interval (CI). We performed subgroup analyses on geographical region, age, sex, and use of preoperative imaging or scoring systems. The risk of bias was assessed using the Newcastle-Ottawa Scale. Certainty of the evidence was assessed using GRADE.

RESULTS

In total, 74 studies were identified, summing up to 76,688 patients. The negative appendectomy rate varied from 0% to 46% in the included studies (interquartile range 4-20%). The meta-analysis estimated the negative appendectomy rate to be 13% (95% CI 12-14%) with large variations between the individual studies. Sensitivity analyses did not change the estimate. The certainty of evidence by GRADE was moderate due to inconsistency in point estimates.

CONCLUSION

The overall estimated negative appendectomy rate after laparoscopic surgery was 13% with moderate certainty of evidence. The negative appendectomy rate varied greatly between studies.

Clinical Characteristics of Acute Appendicitis in Pregnancy: 10-Year Experience at a Single Institution in South Korea

BACKGROUND

Acute appendicitis is the most common cause of non-obstetric surgical disease in pregnant women. The diagnosis and treatment of appendicitis during pregnancy are very important because it can cause life-threatening morbidity to the fetus and mother. We evaluated the clinical characteristics of acute appendicitis in pregnant women.

METHODS

We retrospectively reviewed a medical database that included patients who underwent surgery for acute appendicitis at our hospital from January 2013 through December 2022. We compared non-pregnant women of reproductive age with pregnant women. We classified the pregnant women according to gestational age.

RESULT

A total of 828 patients were reproductive-aged women between 15 and 44 years old. There were 759 non-pregnant patients and 69 pregnant patients. ASA (American Society of Anesthesiologists) physical status classes were significantly higher and hospital stays were significantly longer in the pregnant group. There was no significant intergroup difference in terms of the proportions of complicated appendicitis, extended surgery, or complications. When the enrolled pregnant women were divided into three subgroups according to gestational age, the mean operation time was longest in the third-trimester subgroup. There were no differences among the subgroups in terms of the proportions of complicated appendicitis, extended surgery, or complications, nor were there differences among the subgroups in terms of laboratory findings. Preterm labor and stillbirth occurred in two pregnant women with complicated appendicitis in the second trimester.

CONCLUSION

Immediate surgical treatment should be strongly considered in pregnant women with appendicitis. Efforts for more accurate diagnosis are needed for pregnant women with appendicitis.

A new modified obstetric early warning score for prognostication of severe maternal morbidity

BACKGROUND

Maternal mortality is still a major challenge for health systems, while severe maternal complications are the primary causes of maternal death. Our study aimed to determine whether severe maternal morbidity is effectively predicted by a newly proposed Modified Obstetric Early Warning Score (MOEWS) in the setting of an obstetric intensive care unit (ICU).

METHODS

A retrospective study of pregnant women admitted in the ICU from August 2019 to August 2020 was conducted. MOEWS was calculated 24 h before and 24 h after admission in the ICU, and the highest score was taken as the final value. For women directly admitted from the emergency department, the worst value before admission was collected. The aggregate performance of MOEWS in predicting critical illness in pregnant women was evaluated and finally compared with that of the Acute Physiology and Chronic Health Evaluation II (APACHE II) score.

RESULTS

A total of 352 pregnant women were enrolled; 290 women (82.4%) with severe maternal morbidity were identified and two of them died (0.6%). The MOEWSs of women with serious obstetric complications were significantly higher than those of women without serious obstetric complications [8(6, 10) vs. 4(2, 4.25), z = -10.347, P < 0.001]. MOEWSs of 24 h after ICU admission had higher sensitivity, specificity and AUROC than MOEWSs of 24 h before ICU admission. When combining the two MOEWSs, sensitivity of MOEWS was 99.3% (95% CI: 98-100), specificity 75.8% (95% CI: 63-86), positive predictive value (PPV) 95.1% (95% CI: 92-97) and negative predictive value (NPV) 95.9% (95% CI: 86-100). The areas under the receiver operator characteristic (ROC) curves of MOEWS were 0.92 (95% CI: 0.88-0.96) and 0.70 (95% CI: 0.63-0.76) of the APACHE II score.

CONCLUSION

The newly proposed MOEWS has an excellent ability to identify critically ill women early and is more effective than APACHE II. It will be a valuable tool for discriminating severe maternal morbidity and ultimately improve maternal health.

Acute appendicitis in pregnant women: A Tunisian center experience

Acute appendicitis is the most common surgical pathology during pregnancy. It occurs in about 1 in 500 to 1 in 635 pregnancies per year,[1] and appendectomy is the gold standard in the treatment approach.[2] However, its diagnosis represents a challenge to both surgeons and obstetrician-gynecologists. In addition, the role of laparoscopy remains controversial. This study discusses the diagnostic approach and reviews the appropriate surgical approach while evaluating the part of laparoscopy. This is a retrospective descriptive analysis reviewing 36 patients who underwent surgery for acute appendicitis during pregnancy at the "Surgery Department of Jendouba Hospital from January 1, 2005 to December 31, 2019. Data include age, comorbidities, previous abdominal surgery, symptoms, physical examination findings, complementary exams results, operative treatment details, the emergency status of the procedure, associated medical treatment, antibiotics and tocolysis, the pathology reports, and follow-up. The mean age of patients was 27 years. Twenty-one patients (58, 33%) were in the second trimester of pregnancy, 6 patients (16, 66 %) were in the first trimester, and 9 (25%) in the third one. The physical examination reported a right iliac fossa tenderness in 27 patients (75%). The abdominal ultrasound was performed in all cases and guided the diagnosis in 24 cases (66, 66%). 18 patients (50%) underwent laparoscopy, 12 patients (33, 33%) underwent laparotomy. The remaining 6 patients (16, 66%) required a conversion from laparoscopic to open surgery. The clinical presentation of appendicitis in pregnancy is often misguiding. Therefore, an abdominal ultrasound should be performed for all pregnant patients having abdominal pain. The difficulty of operating under laparoscopy increases with the pregnancy term, leading to a higher risk of conversion, which increases the operating time and the doses of anesthetics, causing a maternal and fetal risk.

Management of Complicated Appendicitis During Pregnancy in the US

IMPORTANCE

Data are sparse regarding the optimal treatment for complicated appendicitis during pregnancy.

OBJECTIVE

To compare nonoperative and operative management in complicated appendicitis during pregnancy.

DESIGN, SETTING, AND PARTICIPANTS

This cohort study was conducted using National Inpatient Sample data from between January 2003 and September 2015. This database approximates a 20% stratified sample of US inpatient hospital discharges. Included individuals were pregnant women discharged with the diagnosis of complicated appendicitis. Data were analyzed from February 2020 through February 2022.

EXPOSURES

Study patients were categorized into 3 groups: those with successful nonoperative management, failed nonoperative management with delayed operation, or immediate operation for complicated appendicitis.

MAIN OUTCOMES AND MEASURES

Clinical outcomes, including maternal infectious complications and perinatal complications, hospital length of stay, and total hospital charges.

RESULTS

Among 8087 pregnant women with complicated appendicitis (median [IQR] age, 27 [22-32] years), nonoperative management of complicated appendicitis was successful among 954 patients (11.8%) and failed among 2646 patients (32.7%), who underwent delayed operation; 4487 patients (55.5%) underwent immediate operation. In multivariate analysis, successful nonoperative management was associated with higher odds of amniotic infection (odds ratio [OR], 4.35; 95% CI, 2.22-8.53; P < .001) and sepsis (OR, 1.52; 95% CI, 1.10-2.11; P = .01) compared with immediate operation, while there was no significant difference in preterm delivery, preterm labor, or abortion. However, failed nonoperative management that required delayed operation was associated with higher odds of preterm delivery, preterm labor, or abortion compared with immediate operation (OR, 1.45; 95% CI, 1.24-1.68; P < .001). Immediate operation was associated with decreased hospital charges compared with nonoperative management that was successful (regression coefficient [RC], 0.09; 95% CI, 0.07-0.11; P < .001) and that failed (RC, 0.12; 95% CI: 0.11-0.14; P < .001). In subgroup multivariate logistic regression analysis, each day in delay to surgery was associated with an increase in odds of preterm delivery, preterm labor, or abortion by 23% (OR, 1.23; 95% CI, 1.18-1.29; P < .001).

CONCLUSIONS AND RELEVANCE

This study found that immediate operation for complicated appendicitis in pregnant women was associated with lower odds of maternal infectious complications without higher odds of perinatal or other maternal complications compared with successful nonoperative management. Failed nonoperative management was associated with worse clinical outcomes.

Analysis of 190 Female Patients after Appendectomy

This study is a retrospective cohort review carried out at a single, private tertiary center. We included 190 female patients who underwent surgery for acute appendicitis between January 2016 and December 2018. Two groups of patients were analyzed based on the pregnancy. The main outcome measures were complication rate and risk of abortion during or after surgery. Out of 190 female patients, eight of them were pregnant (4.2%). The pregnant group more significantly underwent ultrasound investigation compared to the nonpregnant group. Complicated appendicitis present in two pregnant patients at advanced gestational age was not statistically significant from nonpregnant. Laparoscopic appendectomy was performed in 6/8 (75%) of pregnant compared to 158/182 (87%) in nonpregnant (p = 0.415). Compared to the nonpregnant, the pregnant group has a more fecolith, positive peritoneal fluid culture, and wound infection, with E. coli more frequently isolated in 25%. None of the pregnant patients had an abortion, preterm labor, or mortality during or after surgery. In conclusion, laparoscopic appendectomy is a low-risk operation for pregnant with acute appendicitis.

Acute Appendicitis During Pregnancy: A Case Series of 42 Pregnant Women

Introduction It is difficult to diagnose the symptoms of acute appendicitis in pregnant women due to its similarities with pregnancy physiology. In this study, we examined the diagnostic value of laboratory parameters in the diagnosis of acute appendicitis in pregnant women. Material and methods Forty-two patients who underwent appendectomy during pregnancy were evaluated. The demographic characteristics, laboratory parameters and imaging methods of the patients were examined. According to the pathology results, the patients were evaluated in two groups as normal appendix and acute appendicitis. In addition, a non-pregnant control group was formed to compare the results between the pregnant and control groups. Results The mean age of the 42 patients was 30±6 years, and the pathology results were evaluated as normal in 16 (38.1%) of the patients. As imaging methods, ultrasonography was undertaken in all patients, with MRI being additionally performed in two patients. When the normal appendix and acute appendicitis groups were compared, no significant difference was observed in terms of laboratory parameters (neutrophil, lymphocyte, white blood cell and platelet counts, neutrophil-lymphocyte ratio, platelet-lymphocyte ratio, mean thrombocyte volume, red cell distribution width, and pregnancy trimesters (P>0.05). The group that had undergone appendectomy had a significantly higher rate of negative appendectomy compared to the control group (P=0.001). Conclusion Laboratory parameters alone cannot be sufficient for the diagnosis of acute appendicitis in pregnant patients. If clinical examination, laboratory parameters and USG are not sufficient for diagnosis, MRI is the imaging method that should be considered to reduce negative appendectomy rate.

Laparoscopic Versus Open Appendectomy for Appendicitis in Pregnancy: Systematic Review and Meta-Analysis

OBJECTIVES

The clinical safety, efficacy and feasibility of laparoscopic appendectomy (LA) compared with open appendectomy (OA) in pregnancy are still controversial. Herein, we are aiming to compare the clinical outcomes of LA and OA in patients with acute appendicitis during their pregnancy.

MATERIALS AND METHODS

This was a systematic review and meta-analysis of studies comparing laparoscopic and OA in pregnancy identifying using PubMed, Web of science, Embase, The Cochrane Library, Ovid and Scopus. Two independent reviewers extracted data on surgical complication, fetal loss, preterm delivery, hospital stay, Apgar score in both groups.

RESULTS

Twenty-seven studies with total of 6497 patients (4464 in open and 2031 in laparoscopic group) were included. LA was associated with lower rate of wound infection [odds risk (OR)=3.13, 95% confidence interval (CI): 1.77-5.56, P<0.0001] overall complications (OR=2.15, 95% CI: 1.47-3.14, P<0.0001) and shorter hospitalization (mean difference=0.72, 95% CI: 0.43-1.02, P<0.00001) compared with open group. LA was in a lower risk for 5-minute Apgar score (mean difference=0.09, 95% CI: 0.02-0.17, P=0.01) group than open group. No difference was found regarding preterm delivery between 2 groups. LA was associated with higher fetal loss (OR=0.57, 95% CI: 0.41-0.79, P=0.0007) compared with open surgery. However, laparoscopy was not associated with increased fetal loss after 2010 (OR=0.74, 95% CI: 0.44-1.24, P=0.26) compared with open group.

CONCLUSIONS

LA in pregnancy seems to be feasible with acceptable outcome, especially in patients with early and mid-trimester period, with sophisticated hands and experienced centers.

Laparoscopic negative appendectomy during pregnancy is associated with adverse neonatal outcome

Background

The impact on pregnancy of laparoscopy for acute appendicitis is well documented. However, with an accurate pre-operative diagnosis being more challenging in pregnant patients, the incidence of a negative appendectomy (NA) is higher in this cohort. The aim of this study was to evaluate the maternal and neonatal implications of a NA during pregnancy.

Methods

A single center retrospective study between 2004 and 2019 was performed. Pregnant women who underwent laparoscopic appendectomy for suspected appendicitis were identified from which those who had a pathologically normal appendix were selected. The maternal and neonatal outcome of this group were compared with a matched control group of pregnant women who underwent diagnostic laparoscopy for a presumed ovarian torsion in whom no further surgical intervention was performed. Multivariate regression analysis was performed to explore factors that gestational size.

Results

Of the 225 pregnant women who underwent laparoscopy appendectomy, a NA was performed in 33 (14.7%). These were compared with 50 pregnant women in the diagnostic laparoscopy group. The former was characterized by higher rate of nulliparity and later gestational age at the time of the surgery (17.8 ± 7.5 vs 11.3 ± 6.3, p < 0.001). Whilst the rate of maternal complications during pregnancy were similar between the groups, NA was associated with significantly lower neonatal birthweights (2733.9 ± 731.1 vs 3200.7 ± 458.5 g, p = 0.002) and a significantly higher risk of small for gestational age (SGA) infants (OR 5.6, 95% CI 1.02–30.9).

Conclusions

Performing a NA during pregnancy is an indicator for perioperative counseling and antenatal follow up.

Surgery in pregnancy: Identifying factors contributing to variation and delay in diagnosis and management of appendicitis in pregnancy

BACKGROUND

Suspected appendicitis is the most common indication for surgery for non-obstetric conditions during pregnancy. Delay in management increases the risk of appendiceal perforation and pregnancy loss. Stand-alone specialty obstetric hospitals often don't have surgical teams on site. It has been suspected that this may be a factor that leads to delayed diagnosis and management of non-obstetric surgical conditions in pregnancy.

AIMS

To assess the differences in time to diagnosis, imaging, surgical management and outcomes between a stand-alone tertiary obstetric hospital and a tertiary general hospital for pregnant patients presenting with suspected appendicitis who underwent an appendicectomy.

MATERIALS AND METHODS

A retrospective study of all women who underwent appendicectomy in pregnancy for suspected appendicitis over a four-year period.

RESULTS

Women who attended the specialist hospital were later in gestation (medians 29 weeks vs 18 weeks, P = 0.004) and less likely to have imaging (84% vs 56%, P = 0.047) with no difference in the rates of confirmation of diagnosis of appendicitis using imaging. Women who presented to the specialist hospital were more likely to be managed with a laparotomy, admitted to high dependency unit, have a longer hospital stay and tended to be later in gestation. There was no difference in rates of positive appendicectomies, appendiceal perforation or management in under the recommended 24 h.

CONCLUSIONS

The specialty obstetric hospital has a much higher rate of laparotomy and longer length of stay. The majority of patients presenting to both hospitals did not undergo surgery within 24 h and delay in imaging was a major contributor.

Acute Appendicitis in Pregnancy: How to Manage?

Objectives

Acute appendicitis during pregnancy may be associated with severe maternal and fetal complications. The clinical, laboratory and radiological parameters used in diagnosis and the effects of the surgical method and timing on the results are controversial. The present study aims to reveal the relationship between clinical approach, surgical treatment methods and complications in pregnant women with suspected acute appendicitis.

Methods

Between December 2007 and August 2019, 21 pregnant women who underwent appendectomy were included in this study. Age, gestational age, complaints at admission, leukocyte count, radiological examination results, type of surgery (conventional or laparoscopic), histopathology results, time from admission to operation, maternal and fetal complications were retrospectively evaluated.

Results

The number of patients who developed complications was six (28.6%). Three (14.3%) of these patients had preterm birth and three (14.3%) had an abortion. There was no statistically significant relationship between trimester and complication (p=0.747). Fourteen patients (66.7%) underwent laparoscopic surgery and seven patients (33.3%) underwent conventional surgery. Although the complication rate was higher in the laparoscopic group, there was no statistically significant difference (p=0.306). The fetal loss rate in the series was 14.3% and all were in the laparoscopic group. However, there was no statistically significant difference between the groups (p=0.158).

Conclusion

Pregnancy-related limiting factors may complicate the diagnosis of acute appendicitis. These patients definitely need a more skeptical assessment and additional diagnostic tools beyond the standard clinical approach. Although laparoscopic appendectomy appears to be a safe option in treatment, its relationship with a higher risk of fetal loss should be kept in mind.

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.

Atypical dermoid cyst of the ovary during pregnancy: A multi-modality diagnostic approach

We report a case of a sixth-month-pregnant 37-year-old woman with abdominal pain with the presence of a dermoid cyst of the left ovary. The diagnostic work-up required a multi-modality imaging approach. In particular, US and MR examinations were initially performed but resulted with an inconclusive outcome of a final diagnosis. Hence, a CT scan was successively used to formulate lesion characterization. Thus, integrated imaging approach would be recommended.

Appendicitis in Pregnancy: A Post-Hoc Analysis of an EAST Multicenter Study

Objective: To compare the presentation, management, and outcomes of appendicitis in pregnant and non-pregnant females of childbearing age (18-45 years). Methods: This was a post-hoc analysis of a prospectively collected database (January 2017-June 2018) from 28 centers in America. We compared pregnant and non-pregnant females' demographics, clinical presentation, laboratory data, imaging findings, management, and clinical outcomes. Results: Of the 3,597 subjects, 1,010 (28%) were of childbearing age, and 41 were pregnant: The mean age of the pregnant subjects was 30 ± 8 years at a median gestational age of 15 (range 10-23) weeks. The two groups had similar demographics and clinical presentation, but there were differences in management and outcomes. For example, in pregnant subjects, abdominal ultrasound scans (US) plus magnetic resonance imaging (MRI) was the most frequently used imaging method (41%) followed by MRI alone (29%), US alone (22%), computed tomography (CT) (5%), and no imaging (2%). Despite similar American Association for the Surgery of Trauma Emergency General Surgery Clinical and Imaging Grade at presentation, pregnant subjects were more likely to be treated with antibiotics alone (15% versus 4%; p = 0.008). Pregnant subjects were less likely to have simple appendicitis and were more likely to have complicated (perforated or gangrenous) appendicitis or a normal appendix. With the exception of index hospital length of stay, there were no significant differences between the groups in clinical outcomes at index hospitalization or at 30 days. Conclusion: Almost 1 in 20 women of childbearing age presenting with appendicitis is pregnant. Appendicitis most commonly affects women in early to mid-pregnancy. Compared with non-pregnant women of childbearing age, pregnant women presenting with appendicitis undergo non-operative management more often and are less likely to have simple appendicitis. Compared with non-pregnant patients, they have similar clinical outcomes at both index hospitalization and 30 days after discharge.

Suspicion of appendicitis in pregnant women: emergency evaluation by sonography and low-dose CT with oral contrast

OBJECTIVES

To evaluate non-intravenously enhanced low-dose computed tomography with oral contrast (LDCT) for the assessment of pregnant women with right lower quadrant pain, when magnetic resonance imaging (MRI) is not immediately available.

METHODS

One hundred and thirty-eight consecutive pregnant women with acute abdominal pain were admitted in our emergency centre. Thirty-seven (27%) of them, with clinical suspicion of acute appendicitis, underwent abdominal ultrasonography (US). No further examination was recommended when US was positive for appendicitis, negative with low clinical suspicion or showed an alternative diagnosis which explained the clinical presentation. All other patients underwent LDCT (<2.5 mSv). Standard intravenously enhanced CT or MRI was performed when LDCT was indeterminate.

RESULTS

Eight (22%) of 37 US exams were reported normal, 25 (67%) indeterminate, 1 (3%) positive for appendicitis, 3 (8%) positive for an alternative diagnosis. LDCT was obtained in 29 (78%) patients. It was reported positive for appendicitis in 9 (31%), for alternative diagnosis in 2 (7%), normal in 13 (45%) and indeterminate in 5 (17%). Further imaging (standard CT or MRI) showed appendicitis in 2 of these 5 patients, was truly negative in 1, indeterminate in 1 and falsely positive in 1. An appendicitis was confirmed at surgery in 12 (32%) of the 37 patients. The sensitivity and the specificity of the algorithm for appendicitis were 100% (12/12) and 92% (23/25), respectively.

CONCLUSIONS

The proposed algorithm is very sensitive and specific for detection of acute appendicitis in pregnant women; it reduces the need of standard CTs when MRI is not available as second-line imaging.

KEY POINTS

• In pregnant women, US is limited by an important number of indeterminate results • Low-dose CT can be used after an inconclusive US for the diagnosis of appendicitis in pregnant women • An algorithm integrating US and low-dose CT is highly sensitive and specific for appendicitis in pregnant women.

Acute Appendicitis during Pregnancy; Results of a Cohort Study in a Single Iranian Center

Objective

To determine the effects of pregnancy on the presentation, management, surgical and obstetrics outcome of patients with acute appendicitis.

Methods

This prospective cohort study was conducted during a 2-year period from 2014 to 2016 in Shahid Faghihi hospital of Shiraz University of Medical Sciences. We enrolled all the pregnant individuals with acute appendicitis who required surgical appendectomy. We also enrolled age-matched controls of non-pregnant women undergoing open appendectomy during the study period. The presentation, clinical and laboratory characteristics, surgical and obstetrics outcomes were determined in both study groups and were further compared between them. In order to determine the determinants of outcome, we also ran a multivariate logistic regression model.

Results

Overall we included a total number of 584 patients with presumed appendicitis among whom there were 58 (9.94%) and 526 (90.06%) non-pregnant individuals. The pregnant patients had significantly longer duration of symptoms (p=0.038), lower temperature (p=0.026), longer duration of hospital stay (p=0.026) and higher rate of hospital admission longer than 2 days (p=0.031). The complications of the surgical procedure were comparable between the two study groups except for the pneumonia which was significantly higher in pregnant patient (p=0.041). After adjusting for confounders such as age and ethnicity, pregnancy remained significantly associated with lower temperature (p=0.018), longer symptom duration (p=0.042) and higher rate of pneumonia (p=0.049).

Conclusion

Acute appendicitis during the pregnancy was associated with longer duration of symptoms, lower body temperature and higher rate of pneumonia. The pregnancy and neonatal outcomes were comparable to the previously reported data.

The Alvarado Score is accurate in pregnancy: a retrospective case-control study

BACKGROUND

Acute appendicitis is the most frequent abdominal condition that requires non-obstetric surgical intervention during pregnancy. This study aims to scan pregnant patients operated on for acute appendicitis to evaluate the efficiency of using the Alvarado Score (AS) for diagnosis.

METHODS

Our study included 48 pregnant patients who were pre-diagnosed with acute appendicitis and operated on at our department of general surgery from January 2010 to July 2016 and whose files were accessed. Fifty-three non-pregnant female patients of reproductive age who were operated on for appendicitis during the same period were included in the study as the control group. The patients in both groups were divided into two groups based on their AS total score being 7 and ≥ 7.

RESULTS

The mean age of the 48 pregnant patients was 28 (19-42) years, while the mean age of the 53 control patients was 31 (18-45) years. Among pregnant and non-pregnant women, about a third of patients had an AS < 7 (16 of 48 versus 18 of 53). There was no significant difference when the AS scores of both groups were compared (p = 0.947). Using pathology results as reference test, the sensitivity and specificity of the AS in pregnant women was 79 and 80%.

CONCLUSIONS

As a result, when the data collected by our study are evaluated, we see that pregnancy does not have a negative effect on the efficacy of AS. Therefore, the AS system can be an easy, non-invasive auxiliary diagnostic tool with high diagnosis accuracy rates that can be used in pregnant patients suspected of having acute appendicitis.

Acute Appendicitis in Pregnancy and the Developing World

Background

Acute appendicitis is the commonest nonobstetric surgical emergency during pregnancy. The aim of the study was to compare perioperative outcomes of acute appendicitis in pregnant and nonpregnant patients.

Methods

A retrospective review of medical records of 56 pregnant patients between 2011 and 2016 who were compared with 164 nonpregnant women of reproductive age who underwent open appendectomy between 2014 and 2016 for acute appendicitis. The patient's demographics and perioperative data were analyzed.

Results

The median age of pregnant and nonpregnant patients observed was 26 years (range 19–37) and 26 years (range 18–43). There were no significant differences between the groups in negative appendectomy (21.4 and 21.3%, P = 0.52), perforated appendicitis (25 and 23.8%, P = 0.85), postoperative complications (28.6 and 26.8%, P = 0.80), and median length of hospital stay (5 and 4.5 days, P = 0.36). There were 3.6% preterm labour, no maternal mortality, and no fetal loss. In multivariate analysis, WBC >18000/mm³ and long patient time to surgery were independent risk factors for appendicular perforation and postoperative complication (P < 0.05).

Conclusion

Our results of appendectomy in pregnant patients are comparable with nonpregnant patients. Hence the same perioperative treatment protocol can be followed in pregnant and nonpregnant patients even in resource-poor setting.