Educational Module Improves Emergency Department Evaluation for Suspected Constipation

The Digital Rectal Examination: Appropriate Techniques for the Evaluation of Constipation and Fecal Incontinence

Disorders of defecation, including constipation and fecal incontinence, are very common. The digital rectal examination (DRE) is a key component in the early evaluation of patients with these complaints. Confident performance of a DRE requires dedicated training for the clinician and hands-on experience with the technique. DRE can yield a diagnostic accuracy comparable to specialized physiologic tests, including anorectal manometry. This review will describe in detail the steps required to perform a thorough DRE evaluation, as well as the proper interpretation of observations. Thereafter, the current evidence-based findings supporting the value of DRE in defecatory disorders will be summarized.

Evidence-based Standardization of Constipation Management in the Emergency Department: A Quality Improvement Study

Supplemental Digital Content is available in the text.

Constipation is a common problem in pediatric patients. Abdominal radiographs (AXRs) are frequently obtained in the pediatric emergency department for diagnosis despite their poor reliability to rule out underlying pathology or prognostic ability to determine the degree of constipation. The goal of this quality improvement (QI) initiative was to standardize the diagnosis and management of constipation in the pediatric emergency department and urgent care in patients ages 6 months to 21 years and decrease AXR use by 20% and sustain this reduction for 12 months.

Reducing Abdominal Radiographs to Diagnose Constipation in the Pediatric Emergency Department

OBJECTIVE

To determine the frequency of abdominal radiographs obtained in healthy children aged 6 months to 18 years to diagnose constipation in a pediatric emergency department, and evaluate the impact of quality improvement (QI) interventions on their use.

STUDY DESIGN

QI study over 2.5 years at a large urban quaternary care children's hospital emergency department. Interventions consisted of educational presentations and individualized abdominal radiograph data reporting. The primary outcome measure was the percentage of abdominal radiographs performed on healthy patients discharged home with a diagnosis of constipation before and after QI interventions.

RESULTS

The baseline total percentage of abdominal radiographs performed in otherwise healthy children discharged home with a diagnosis of constipation was 36% (October 2016 to January 2018). According to questionnaire results, ruling out obstruction was the most common reason for ordering an abdominal radiograph. After the QI interventions, the total percentage of abdominal radiograph decreased to 18% (April 2018 to March 2019). This 18% decrease was significant (P < .001) and sustained over a 12-month follow-up period. Throughout the study period, the average length of stay was 1.07 hours longer for children who had an abdominal radiograph. Clinically important return visits to the emergency department were uncommon during the postintervention phase (125/1830 [6.8%]), and not associated with whether or not an abdominal radiograph was performed at the initial visit.

CONCLUSION

After these QI interventions, we noted a significant and sustained decrease in the percentage of abdominal radiographs obtained for otherwise healthy patients discharged home with a diagnosis of constipation.

Understanding the Constipation Conundrum: Predictors of Obtaining an Abdominal Radiograph During the Emergency Department Evaluation of Pediatric Constipation

OBJECTIVES

Many children with constipation who are evaluated in emergency departments (EDs) receive an abdominal radiograph (AR) despite evidence-based guidelines discouraging imaging. The objectives of this study were to identify predictors associated with obtaining an AR and to determine if ARs were associated with a longer length of stay (LOS) among children with constipation evaluated in the ED.

METHODS

A review of billing and electronic health records was conducted in an academic pediatric ED for children ages 0 to 17 years who had a primary discharge diagnosis of constipation from July 2013 to June 2014. Logistic regression was used to identify predictors for obtaining an AR. Differences in mean LOS were analyzed using linear regression.

RESULTS

In total, 326 children met inclusion criteria, and 60% of the children received an AR. In logistic regression, significant predictors included age (odds ratio [OR] = 1.1/year of age, P = 0.004), presenting with abdominal pain as chief complaint compared with constipation (OR = 4.4, P < 0.0001), and history of emesis (OR = 2.8, P = 0.001) after controlling for provider type and previous constipation medication use. In linear regression, the adjusted mean LOS for those with an AR was 163 minutes compared with 117 minutes for those without after controlling for age, provider type, and history of constipation medication use (P < 0.0001).

CONCLUSIONS

Abdominal radiographs were used frequently in the ED diagnosis and management of constipation, particularly in older children and those with abdominal pain and emesis. Abdominal radiographs were associated with increased LOS.

Constipation-Related Emergency Department Use, and Associated Office Visits and Payments Among Commercially Insured Children

OBJECTIVE

Pediatric constipation is common, costly, and often managed in the Emergency Department (ED). The objectives of this study were to determine the frequency of constipation-related ED visits in a large commercially insured population, the frequency of an office visit in the month before and after these visits, demographic characteristics associated with these office visits, and the ED-associated payments.

METHODS

Data were extracted from the Truven MarketScan database for commercially insured children from 2012 to 2013. Data on the presence and timing of clinic visits within 30 days before and after an ED constipation visit and demographic variables were extracted. Logistic regression was used to predict an outcome of presence of a visit with independent variables of age, sex, and region of the country.

RESULTS

In a population of 17 million children aged 0 to 17 years, 448,440 (2.6%) were identified with constipation in at least 1 setting, with 65,163 (14.5%) having an ED visit for constipation. Of all children with a constipation-related ED visit, 45% had no office visit in the 30 days before or after the ED visit. Increasing age was associated with absence of an office visit. The median payment by insurance for an ED constipation visit was $523, the median out-of-pocket payment was $100, for a total of $623 per visit.

CONCLUSION

One in 7 children with constipation in this commercially insured population received ED care for constipation, many without an outpatient visit in the month before or after. Efforts to improve primary care utilization for this condition should be encouraged.

Are We Using Abdominal Radiographs Appropriately in the Management of Pediatric Constipation?

OBJECTIVE

To identify the reasons why pediatric gastroenterologists obtain abdominal radiographs in the management of pediatric constipation.

STUDY DESIGN

This was a prospective study surveying providers regarding their rationale, interpretation, resultant change, and confidence in their management before and after obtaining KUBs in patients seen for suspected constipation. Demographics and clinical findings were obtained from medical records.

RESULTS

A total of 24 providers were surveyed after 72 patient encounters. Reasons for obtaining an abdominal radiograph included evaluation of stool burden (70%), need for a clean out (35%), fecal impaction (27%), cause of abdominal pain (24%), demonstration of stool burden to families (14%), assessment of response to therapy (13%), or encopresis (10%). The plan was changed in 47.6% of cases based on radiographic findings. In cases in which a plan was outlined before obtaining the radiograph (69%), the initial plan was implemented on average in 52.5%. In cases with no plans before obtaining the radiograph, previously unconsidered plans were implemented in 8.7%. Provider confidence in the management plan increased from 2.4 ± 2.7 to 4.1 ± 1.8 (P < .05) after the abdominal radiograph.

CONCLUSION

Abdominal radiographs commonly are obtained by pediatric gastroenterologists in the evaluation and management of constipation. The majority used it to make a diagnosis, and nearly one-half changed their management based on the imaging findings. Overall, they reported an improved confidence in their management plan, despite evidence that radiographic findings poorly correlate with clinical severity. This study highlights the need for further provider education regarding the recommendations delineated in existing constipation guidelines.

Delayed Diagnoses in Children with Constipation: Multicenter Retrospective Cohort Study

OBJECTIVE

The use of abdominal radiographs contributes to increased healthcare costs, radiation exposure, and potentially to misdiagnoses. We evaluated the association between abdominal radiograph performance and emergency department (ED) revisits with important alternate diagnosis among children with constipation.

STUDY DESIGN

Retrospective cohort study of children aged <18 years diagnosed with constipation at one of 23 EDs from 2004 to 2015. The primary exposure was abdominal radiograph performance. The primary outcome was a 3-day ED revisit with a clinically important alternate diagnosis. RAND/University of California, Los Angeles methodology was used to define whether the revisit was related to the index visit and due to a clinically important condition other than constipation. Regression analysis was performed to identify exposures independently related to the primary outcome.

RESULTS

A total of 65.7% (185 439/282 225) of children with constipation had an index ED visit abdominal radiograph performed. Three-day revisits occurred in 3.7% (10 566/282 225) of children, and 0.28% (784/282 225) returned with a clinically important alternate related diagnosis. Appendicitis was the most common such revisit, accounting for 34.1% of all 3-day clinically important related revisits. Children who had an abdominal radiograph performed were more likely to have a 3-day revisit with a clinically important alternate related diagnosis (0.33% vs 0.17%; difference 0.17%; 95% CI 0.13-0.20). Following adjustment for covariates, abdominal radiograph performance was associated with a 3-day revisit with a clinically important alternate diagnosis (aOR: 1.39; 95% CI 1.15-1.67). Additional characteristics associated with the primary outcome included narcotic (aOR: 2.63) and antiemetic (aOR: 2.35) administration and underlying comorbidities (aOR: 2.52).

CONCLUSIONS

Among children diagnosed with constipation, abdominal radiograph performance is associated with an increased risk of a revisit with a clinically important alternate related diagnosis.