Surgical trends in the management of acute cholecystitis during pregnancy

Pregnant patients undergoing cholecystectomy: nationwide assessment of clinical characteristics and outcomes

BACKGROUND

Gallstone disease in pregnancy is one of the most common indications for nonobstetrical surgery during pregnancy. National-level data on contemporary surgical practice and outcomes are limited.

OBJECTIVE

This study aimed to assess the clinical characteristics and outcomes of patients undergoing cholecystectomy during pregnancy.

STUDY DESIGN

This cross-sectional study examined the Healthcare Cost and Utilization Project's 2 nationwide databases in the United States: the National Inpatient Sample and the Nationwide Ambulatory Surgery Sample. The study population included 18,630 patients who had cholecystectomy during pregnancy from January 2016 to December 2020. The exposure was gestational age, grouped sequentially into the following 5 groups: first trimester (<14 weeks), early second trimester (14-20 weeks), late second trimester (21-27 weeks), early third trimester (28-36 weeks), and late third trimester (≥37 weeks). The main outcomes were clinical demographics, medical comorbidities, surgical information, and pregnancy characteristics and outcomes, assessed by gestational age.

RESULTS

Cholecystectomy was most common in the early second trimester (32.1%), followed by the first trimester (25.2%), late second trimester (23.1%), early third trimester (12.4%), and late third trimester (7.2%). Patients in the first-trimester group were more likely to be aged ≥35 years, to smoke, and to have acute cholecystitis, severe hyperemesis gravidarum including metabolic disturbance, pregestational diabetes, multifetal gestation, and sepsis/shock (P<.001). Patients in the early-third-trimester group were more likely to be obese and have gestational diabetes, Charlson Comorbidity Index of ≥1, premature rupture of membranes, and intrauterine growth restriction, whereas those in the late-third-trimester group were more likely to have gallstone pancreatitis, biliary colic, chorioamnionitis, gestational hypertension, preeclampsia, and severe maternal morbidity including sepsis (P<.001). At the cohort level, a laparoscopic approach was used in most cholecystectomy procedures (97.5%), and bile duct injury was uncommon (<0.1%). Delivery during the admission occurred in 0.3%, 0%, 0.6%, 17.8%, and 60.6% in the 5 gestational age groups, respectively (P<.001). Among the cases that had delivery in the early- and late-third-trimester groups, the delivery event preceded cholecystectomy in 61.4% and 86.2%, respectively, whereas both delivery and cholecystectomy occurred on the same day in 34.3% and 13.8%, respectively.

CONCLUSION

This nationwide analysis suggests that clinical and pregnancy characteristics and outcomes of patients undergoing cholecystectomy differ by pregnancy stage with a bimodal distribution. Although patients in the first and third trimesters have distinct medical conditions, more clinically significant pregnancy and maternal outcomes were found in both groups compared with patients in the second trimester.

Cholecystectomy and ERCP in pregnancy: a nationwide register-based study

OBJECTIVE

The objective was to examine the outcomes of cholecystectomy and endoscopic retrograde cholangiopancreatography (ERCP) during pregnancy and compare these outcomes with those in nonpregnant women of fertile age.

SUMMARY BACKGROUND DATA

Although both laparoscopic cholecystectomy and ERCP are considered safe and feasible in pregnant patients, there is still concern and uncertainty regarding gallstone intervention during pregnancy. This study aimed to investigate outcomes in pregnant patients compared to outcomes in nonpregnant patients.

METHODS

Data on all female patients aged 18-45 years were retrieved from the Swedish Registry for Gallstone Surgery and Endoscopic Retrograde Cholangiopancreatography. The patients were divided into groups according to intervention: cholecystectomy, ERCP, or a combination thereof. Differences between pregnant and nonpregnant patients were analyzed.

RESULTS

A total of 21 328 patients were included, with 291 cholecystectomy and 63 ERCP procedures performed in pregnant patients. At the 30-day follow-up, more complications after cholecystectomy were registered for pregnant patients. However, pregnancy was not a significant risk factor for adverse events when adjusting for previous complicated gallstone disease, intraoperative complications, emergency surgery, and common bile duct stones. There were no differences in outcomes when comparing cholecystectomy among the different trimesters. ERCP had no significant effect on outcomes at the 30-day follow-up.

CONCLUSION

Cholecystectomy, ERCP, and combinations thereof are safe during pregnancy.

Operative vs Nonoperative Management of Acute Cholecystitis During the Different Trimesters of Pregnancy

Importance

Acute cholecystitis (AC) management during pregnancy requires balancing the risk of pregnancy loss or preterm delivery (adverse pregnancy outcomes [APOs]) with or without surgery. Guidelines recommend cholecystectomy across trimesters; however, trimester-specific evidence on the risks of AC and its management is lacking.

Objective

To assess cholecystectomy frequency in pregnant people with AC, compare the rates of APOs in pregnant people with or without AC, and compare the rates of APOs in people with AC who did or did not undergo cholecystectomy.

Design, Setting, and Participants

This retrospective, population-based cohort study used data for pregnant people with AC from the IBM MarketScan Commercial Claims and Encounters Database from January 1, 2007, to December 31, 2019, and a propensity score-matched cohort of pregnant people without AC. Trimester status (first [T1], second [T2], and third [T3]), APOs, and cholecystectomy were defined by administrative claims. Data were analyzed from October 2021 to July 2022.

Exposures

Pregnant patients with or without AC. Pregnant patients with AC who did or did not receive cholecystectomy.

Main Outcomes and Measures

The main outcomes were cholecystectomy during pregnancy and APOs (ie, preterm delivery and pregnancy loss). Pregnant patients with and without AC were compared to assess the association of AC with risk of APOs. Propensity score inverse-probability weighting was used to calculate treatment-associated APO risk among patients with 1-year follow-up.

Results

The study included 5759 pregnant patients with AC (mean [SD] age, 30.1 [6.6] years) and 23 036 controls (mean [SD] age, 29.9 [6.7] years) after propensity score matching. Among 3426 pregnant patients with AC and 1-year follow-up, 1182 (34.5%) underwent cholecystectomy during the pregnancy (684 [41.7%] presenting with AC in T1, 404 [40.4%] in T2, and 94 [12.0%] in T3). Acute cholecystitis during pregnancy, irrespective of treatment, was associated with higher odds of APO compared with no AC during pregnancy across all trimesters (odds ratio [OR], 1.69 [95% CI, 1.54-1.85]). Compared with nonoperative management, receipt of surgery was associated with lower odds of APOs across all trimesters (OR, 0.75 [95% CI, 0.63-0.87]), in T1 (OR, 0.81 [95% CI, 0.66-1.00]), in T2 (OR, 0.71 [95% CI, 0.50-1.00]), and in T3 (OR, 0.45 [95% CI, 0.28-0.70]).

Conclusions and Relevance

In this study, cholecystectomy was associated with lower risk of APO in patients with AC across all trimesters, with the greatest benefit in T3. However, only 34.5% overall and 12.0% of patients in T3 had a cholecystectomy. These findings support guidelines recommending cholecystectomy during pregnancy and should inform decision-making discussions. Greater guideline adherence and surgery use, especially in T3, may represent an opportunity to improve outcomes for pregnant people with AC.

Imaging of benign gallbladder and biliary pathologies in pregnancy

The rising incidence combined with pregnancy-related physiological changes make gallbladder and biliary pathology high on the differential for pregnant patients presenting with right upper abdominal pain. Imaging plays a crucial role in determining surgical versus non-surgical management in pregnant patients with biliary or gallbladder pathology. Ultrasound (first-line) and magnetic resonance with magnetic resonance cholangiopancreatography (second-line) are the imaging techniques of choice in pregnant patients with suspected biliary pathology due to their lack of ionizing radiation. MRI/MRCP offers an excellent non-invasive imaging option, providing detailed anatomical detail without known harmful fetal side effects. This article reviews physiological changes in pregnancy that lead to gallstone and biliary pathology, key imaging findings on US and MRI/MRCP, and management pathways.

Nonobstetric Surgical Emergencies in Pregnancy

In this article, we discuss the major nonobstetric surgical complications that may occur in pregnancy. We highlight specific diagnostic challenges particularly with imaging modalities and radiation considerations for the fetus. Topics covered in this article include appendicitis, intestinal obstruction, gallstone disease, hepatic rupture, perforated peptic ulcer, mesenteric venous thrombosis, splenic artery aneurysm rupture, and aortic dissection.

Novel advances in surgery for Gallstone Disease

PURPOSE OF REVIEW

Examine recent advances in the treatment of patients with complex gallstone disease.

RECENT FINDINGS

Laparoscopic common bile duct exploration (LCBDE) has been shown to be an effective and safe treatment for choledocholithiasis, resulting in decreased hospital length of stay and costs when compared with ERCP plus laparoscopic cholecystectomy (LC). Novel simulator-based curricula have recently been developed to address the educational gap that has resulted in an underutilization of LCBDE. Patients with cholecystitis who are too ill to safely undergo LC have traditionally been treated with percutaneous cholecystostomy (PC). Endoscopic ultrasound (EUS) guided gallbladder drainage is a novel definitive treatment for such patients and has been shown to result in decreased complications and hospital readmissions compared to PC. The management of symptomatic gallstone disease during pregnancy has evolved over the last several decades. While it is now well established that laparoscopic procedures under general anesthesia are safe throughout a pregnancy, recent studies have suggested that laparoscopic cholecystectomy during the third trimester specifically may result in higher rates of preterm labor when compared with non-operative management. Finally, indocyanine green (ICG) fluorescence cholangiography is a novel imaging modality that has been used during laparoscopic cholecystectomy and may offer better visualization of biliary anatomy during dissection when compared with traditional intraoperative cholangiography. A number of recent technological, procedural, educational, and research innovations have enhanced and expanded treatment options for patients with complex gallstone disease.

Safety of laparoscopic surgery during pregnancy: a Korean nationwide population-based study

BACKGROUND

The optimal surgical approach to perform during pregnancy is still controversial. This study evaluated pregnancy and operative outcomes in women undergoing an appendectomy or cholecystectomy during pregnancy, and compared them between the laparoscopic and open approach using nationwide population-based data.

METHODS

Between 2009 and 2019, a total of 2941 pregnant women with procedure codes for an appendectomy or cholecystectomy were extracted from the Korean National Health Insurance claims data (laparoscopy: 1504; open: 1437). Surgical outcomes [length of stay (LOS), anesthesia time, 30-day readmission rates, transfusion rates, second laparotomy, and 30-day mortality rates] and pregnancy outcomes (live birth rate, overall and spontaneous abortion rates, threatened abortion rate, type of delivery, preterm labor, stillbirth, fetal screening abnormalities, and intrauterine growth retardation) were compared between the open and laparoscopic groups.

RESULTS

The laparoscopic group had a significantly shorter LOS than the open group, and transfusions were less frequent in the laparoscopic group. Mortality, 30-day readmission rates, and second laparotomy were not statistically significant between the two groups. There were no significant differences in fetal loss and live birth rates between the two groups in all gestational ages. Preterm labor within 30 days of surgery was more frequent in the laparoscopy group than in the open surgery group, especially for those in their first and third trimesters. Open procedures were associated with an increased rate of cesarean sections.

CONCLUSIONS

Laparoscopic surgery was found to be feasible and safe without adverse postoperative outcomes. Careful observation of postoperative preterm labor is necessary, especially for women who undergo laparoscopic surgery in their first and third trimesters.

Acute Cholecystitis: A Review

IMPORTANCE

Gallbladder disease affects approximately 20 million people in the US. Acute cholecystitis is diagnosed in approximately 200 000 people in the US each year.

OBSERVATIONS

Gallstone-associated cystic duct obstruction is responsible for 90% to 95% of the cases of acute cholecystitis. Approximately 5% to 10% of patients with acute cholecystitis have acalculous cholecystitis, defined as acute inflammation of the gallbladder without gallstones, typically in the setting of severe critical illness. The typical presentation of acute cholecystitis consists of acute right upper quadrant pain, fever, and nausea that may be associated with eating and physical examination findings of right upper quadrant tenderness. Ultrasonography of the right upper quadrant has a sensitivity of approximately 81% and a specificity of approximately 83% for the diagnosis of acute cholecystitis. When an ultrasound result does not provide a definitive diagnosis, hepatobiliary scintigraphy (a nuclear medicine study that includes the intravenous injection of a radiotracer excreted in the bile) is the gold standard diagnostic test. Following diagnosis, early (performed within 1-3 days) vs late (performed after 3 days) laparoscopic cholecystectomy is associated with improved patient outcomes, including fewer composite postoperative complications (11.8% for early vs 34.4% for late), a shorter length of hospital stay (5.4 days vs 10.0 days), and lower hospital costs. During pregnancy, early laparoscopic cholecystectomy, compared with delayed operative management, is associated with a lower risk of maternal-fetal complications (1.6% for early vs 18.4% for delayed) and is recommended during all trimesters. In people older than 65 years of age, laparoscopic cholecystectomy is associated with lower mortality at 2-year follow-up (15.2%) compared with nonoperative management (29.3%). A percutaneous cholecystostomy tube, in which a drainage catheter is placed in the gallbladder lumen under image guidance, is an effective therapy for patients with an exceptionally high perioperative risk. However, percutaneous cholecystostomy tube placement in a randomized trial was associated with higher rates of postprocedural complications (65%) compared with laparoscopic cholecystectomy (12%). For patients with acalculous acute cholecystitis, percutaneous cholecystostomy tube should be reserved for patients who are severely ill at the time of diagnosis; all others should undergo a laparoscopic cholecystectomy.

CONCLUSIONS AND RELEVANCE

Acute cholecystitis, typically due to gallstone obstruction of the cystic duct, affects approximately 200 000 people in the US annually. In most patient populations, laparoscopic cholecystectomy, performed within 3 days of diagnosis, is the first-line therapy for acute cholecystitis.

Association Between Trimester and Outcomes after Cholecystectomy During Pregnancy

BACKGROUND

Conventional philosophy promotes the second trimester as the ideal time during pregnancy for cholecystectomy. However, literature supporting this belief is sparse. The purpose of this study is to examine the association of trimester and clinical outcomes after cholecystectomy during pregnancy.

STUDY DESIGN

The National Inpatient Sample was queried for pregnant women who underwent cholecystectomy between October 2015 and December 2017. Patients were categorized by trimester. Multivariable logistic and continuous outcome regression models were used to evaluate the association of trimester and outcomes, including maternal and fetal complications, length of stay, and hospital charges. The primary outcome was any complication-a composite of specific clinical complications, each of which were designated as secondary outcomes.

RESULTS

A total of 819 pregnant women satisfied our inclusion criteria. Of these, 217 (26.5%) were in the first trimester, 381 (47.5%) were in the second trimester, and 221 (27.0%) were in the third trimester. Median age was 27 years (interquartile range: 23-31 years). Compared with the second trimester, cholecystectomy during the first trimester was not associated with higher rates of complications (adjusted odds ratio [AOR] 0.88, 95% confidence interval [CI]: 0.47-1.63, p = 0.68). However, cholecystectomy during the third trimester was associated with a higher rate of preterm delivery (AOR 7.20, 95% CI 3.09-16.77, p < 0.001) and overall maternal and fetal complications (AOR 2.78, 95% CI 1.71-4.53, p < 0.001). Compared with the second trimester, the third trimester was associated with 21.3% higher total hospital charges (p = 0.003).

CONCLUSIONS

Our results suggest that cholecystectomy can be performed in the first trimester without significantly increased risk of maternal and fetal complications, compared to the second trimester. In contrast, cholecystectomy during pregnancy should not be delayed until the third trimester.