Pharmacist Optimization of Bowel Preparations in the Critically Ill: The Poopy Study

ABSTRACT

INTRODUCTION: Critically ill patients undergo stressful states while in the intensive care unit (ICU) and thus have alterations in bowel habits, including constipation in 20- 83% and diarrhea in 3.3-78%. Patients frequently receive opioid analgesics to assist with sedation and pain control. Appropriate bowel management is essential to prevent further complications during the ICU stay. The purpose of this study is to examine the various bowel preparations (BP) used in ICU patients, time to first bowel movement after initiation or escalation of a BP, and reason for BP discontinuation. METHOD(S) This multi-center, multi-ICU, retrospective observational review evaluated tele-critical care pharmacist interventions documenting initiation or change in BP from January 2, 2021 to June 30, 2021. Interventions were excluded if the BP was renewed, duplicate therapy and/or change in formulation. Descriptive statistics were used to describe the data. RESULT(S) One hundred ninety-six unique patients had at least one BP intervention. Baseline characteristics include 55% male, average age of 64 years, a BMI of 32.9, and 66% COVID-19 positive. One hundred seventy-four unique patients had a BP initiated or added on to current therapy, while 62 unique patients had current therapy escalated. The median days to first bowel movement after initiation or addition of a BP was 5.4 days (range 0-19). Ninety-eight percent of patients received an opioid, either continuous infusion or oral, and 90% received enteral nutrition. Docusate and senna were the primary BPs added when a regimen was initiated. Then, polyethylene glycol was added as the next BP. Lactulose and bisacodyl suppositories were added as 4th line treatment if the patient had not experienced a bowel movement. Methylnaltrexone was used in 1 patient. Fifty-two unique patients had one or more medications from their current bowel regimen discontinued due increased stool output, diarrhea, multiple bowel movements within last 24 hours, or the patient refusing the medication. CONCLUSION(S) Initiation of BPs in critically ill patients, especially if receiving an opiate, may be delayed. Bowel regimen initiation should be considered when the patient is placed on opiate therapy. If the patient continues to have a delayed response to therapy, prompt escalation of therapy may be warranted.