Diagnosis and Management of Acute Pancreatitis

Acute pancreatitis (AP) is increasing in incidence across the world, and in all age groups. Major changes in management have occurred in the last decade. Avoiding total parenteral nutrition and prophylactic antibiotics, avoiding overly aggressive fluid resuscitation, initiating early feeding, avoiding endoscopic retrograde cholangiopancreatography in the absence of concomitant cholangitis, same-admission cholecystectomy, and minimally invasive approaches to infected necrosis should now be standard of care. Increasing recognition of the risk of recurrence of AP, and progression to chronic pancreatitis, along with the unexpectedly high risk of diabetes and exocrine insufficiency after AP is the subject of large ongoing studies. In this review, we provide an update on important changes in management for this increasingly common disease.

Gallstone Pancreatitis: Admission Versus Normal Cholecystectomy-a Randomized Trial (Gallstone PANC Trial)

INTRODUCTION

Early cholecystectomy shortly after admission for mild gallstone pancreatitis has been proposed based on observational data. We hypothesized that cholecystectomy within 24 hours of admission versus after clinical resolution of gallstone pancreatitis that is predicted to be mild results in decreased length-of-stay (LOS) without an increase in complications.

METHODS

Adults with predicted mild gallstone pancreatitis were randomized to cholecystectomy with cholangiogram within 24 hours of presentation (early group) versus after clinical resolution (control) based on abdominal exam and normalized laboratory values. Primary outcome was 30-day LOS including readmissions. Secondary outcomes were time to surgery, endoscopic retrograde cholangiopancreatography (ERCP) rates, and postoperative complications. Frequentist and Bayesian intention-to-treat analyses were performed.

RESULTS

Baseline characteristics were similar in the early (n = 49) and control (n = 48) groups. Early group had fewer ERCPs (15% vs 29%, P = 0.038), faster time to surgery (16 h vs 43 h, P < 0.005), and shorter 30-day LOS (50 h vs 77 h, RR 0.68 95% CI 0.65 - 0.71, P < 0.005). Complication rates were 6% in early group versus 2% in controls (P = 0.613), which included recurrence/progression of pancreatitis (2 early, 1 control) and a cystic duct stump leak (early). On Bayesian analysis, early cholecystectomy has a 99% probability of reducing 30-day LOS, 93% probability of decreasing ERCP use, and 72% probability of increasing complications.

CONCLUSION

In patients with predicted mild gallstone pancreatitis, cholecystectomy within 24 hours of admission reduced rate of ERCPs, time to surgery, and 30-day length-of-stay. Minor complications may be increased with early cholecystectomy. Identification of patients with predicted mild gallstone pancreatitis in whom early cholecystectomy is safe warrants further investigation.

African-Americans and Indigenous Peoples Have Increased Burden of Diseases of the Exocrine Pancreas: A Systematic Review and Meta-Analysis

Ethnic health disparity is a well-acknowledged issue in many disease settings, but not diseases of the exocrine pancreas. A systematic review and meta-analysis was conducted to explore the race- and ethnicity-specific burden of diseases of the exocrine pancreas. Studies that compared health-related endpoints between two or more ethnicities were eligible for inclusion. Proportion meta-analyses were conducted to compare burden between groups. A total of 42 studies (24 on pancreatic cancer, 17 on pancreatitis, and one on pancreatic cyst) were included in the systematic review, of which 19 studies were suitable for meta-analyses. The incidence of pancreatic cancer was 1.4-fold higher among African-Americans, while the incidence of acute pancreatitis was 4.8-fold higher among an indigenous population (New Zealand Māori) compared with Caucasians. The prevalence of post-pancreatitis diabetes mellitus was up to 3.0-fold higher among certain ethnicities, including Asians, Pacific Islanders, and indigenous populations compared with Caucasians. The burden of diseases of the exocrine pancreas differs between ethnicities, with African-Americans and certain indigenous populations being at the greatest risk of developing these diseases. Development of race- and ethnicity-specific screening as well as protocols for lifestyle modifications may need to be considered with a view to reducing the disparities in burden of diseases of the exocrine pancreas.

Meta-analysis of operative mortality and complications in patients from minority ethnic groups

BACKGROUND

Insight into the effects of ethnic disparities on patients' perioperative safety is necessary for the development of tailored improvement strategies. The aim of this study was to review the literature on safety differences between patients from minority ethnic groups and those from the ethnic majority undergoing surgery.

METHODS

PubMed, CINAHL, the Cochrane Library and Embase were searched using predefined inclusion criteria for available studies from January 1990 to January 2013. After quality assessment, the study data were organized on the basis of outcome, statistical significance and the direction of the observed effects. Relative risks for mortality were calculated.

RESULTS

After screening 3105 studies, 26 studies were identified. Nine of these 26 studies showed statistically significant higher mortality rates for patients from minority ethnic groups. Meta-analysis demonstrated a greater risk of mortality for these patients compared with patients from the Caucasian majority in studies performed both in North America (risk ratio 1·22, 95 per cent confidence interval 1·05 to 1·42) and outside (risk ratio 2·25, 1·40 to 3·62). For patients from minority groups, the length of hospital or intensive care unit stay was significantly longer in five studies, and complication rates were significantly higher in ten. Methods used to identify patient ethnicity were not described in 14 studies.

CONCLUSION

Patients from minority ethnic groups, in North America and elsewhere, have an increased risk of perioperative death and complications. More insight is needed into the causes of ethnic disparities to pursue safer perioperative care for patients of minority ethnicity.

Early cholecystectomy safely decreases hospital stay in patients with mild gallstone pancreatitis: a randomized prospective study

OBJECTIVE

We hypothesized that laparoscopic cholecystectomy performed within 48 hours of admission for mild gallstone pancreatitis, regardless of resolution of abdominal pain or abnormal laboratory values, would result in a shorter hospital stay.

SUMMARY OF BACKGROUND DATA

Although there is consensus among surgeons that patients with gallstone pancreatitis should undergo cholecystectomy to prevent recurrence, the precise timing of laparoscopic cholecystectomy for mild disease remains controversial.

METHODS

Consecutive patients with mild pancreatitis (Ranson score <or=3) were prospectively randomized to either an early laparoscopic cholecystectomy group (within 48 hours of admission) versus a control laparoscopic cholecystectomy group (performed after resolution of abdominal pain and normalizing trend of laboratory enzymes). The primary end point was hospital length of stay. Secondary end point was a composite of rates of conversion to an open procedure, perioperative complications, and need for endoscopic retrograde cholangiography. The study was designed to enroll 100 patients with an interim analysis after 50 patients.

RESULTS

At interim analysis, 50 patients were enrolled at a single university-affiliated public hospital. Of them, 25 patients were randomized to the early group and 25 patients to the control group. Patient age ranged from 18 to 74 years with a median duration of symptoms of 2 days upon presentation and a median Ranson score of 1. There were no baseline differences between the groups with regards to demographics, clinical presentation, or the presence of comorbidities. The hospital length of stay was shorter for the early cholecystectomy group (mean: 3.5 [95% CI, 2.7-4.3], median: 3 [IQR, 2-4]) compared with the control group (mean: 5.8 [95% CI, 3.8-7.9], median: 4 [IQR, 4-6] [P = 0.0016]). Six patients from the early group required endoscopic retrograde cholangiography, compared with 4 in the control group (P = 0.72). There was no statistically significant difference in the need for conversion to an open procedure or in perioperative complication rates between the 2 groups.

CONCLUSION

In mild gallstone pancreatitis, laparoscopic cholecystectomy performed within 48 hours of admission, regardless of the resolution of abdominal pain or laboratory abnormalities, results in a shorter hospital length of stay with no apparent impact on the technical difficulty of the procedure or perioperative complication rate.

Racial disparities in cholecystectomy rates during hospitalizations for acute gallstone pancreatitis: a national survey

BACKGROUND

Practice guidelines advocate performing cholecystectomy for acute gallstone pancreatitis during the same hospitalization stay. Our objectives were to determine nationwide rates of adherence to these guidelines in the United States and whether this varied with race and ethnicity.

METHODS

We queried the Nationwide Inpatient Sample (NIS) to identify admissions for acute gallstone pancreatitis between 1998 and 2003. We calculated overall and race-specific proportions of patients who underwent cholecystectomy or endoscopic retrograde cholangiopancreatography (ERCP) prior to discharge. We used multivariate analysis to determine racial effects while adjusting for age, comorbidity, health insurance payer, and hospital factors.

RESULTS

The overall rate of cholecystectomy was 51% and that of either cholecystectomy or ERCP was 62%. Cholecystectomy rates were lower among African Americans (AAs) and Asians compared to Whites (44% and 43%, respectively, vs 50%, P < 0.001). After multivariate adjustment, the odds of cholecystectomy was lower in AAs (OR 0.68, 95% CI 0.63-0.73) and Asians/Pacific Islanders (OR 0.75, 95% CI 0.65-0.87) relative to Whites, while rates were modestly higher among Hispanics (OR 1.12, 95% CI 1.03-1.22). AAs were less likely to receive ERCP than Whites (OR 0.71, 95% CI 0.65-0.78). In contrast, Asians/Pacific Islanders (OR 1.40, 95% CI 1.16-1.69) and Hispanics (OR 1.19, 95% CI 1.09-1.29) were more likely to receive ERCP than Whites.

CONCLUSIONS

Despite practice guidelines, about only half of admissions for gallstone pancreatitis receive cholecystectomy during the same hospitalization, and cholecystectomy rates vary substantially by race. These findings raise concerns regarding suboptimal healthcare delivery.