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Effect of pyridostigmine on the duration of post-operative ileus after colorectal surgery.

PyRICo-RCT – The effect of Pyridostigmine to Reduce the duration of post-operative Ileus after Colorectal Surgery in adults – a double-blinded Randomised Controlled Trial.

Status
Recruiting
Phases
Phase 3
Study type
Interventional
Source
ANZCTR
Registry ID
ACTRN12621000530820
Acronym
PyRICo-RCT
Enrollment
130
Registered
2021-05-06
Start date
2021-10-07
Completion date
Unknown
Last updated
2023-09-26

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

None listed

Brief summary

After abdominal surgery, the bowel can commonly be paralysed and slow to return to normal function. The resultant intolerance to food and liquids can result in severe bloating, inability to pass a bowel movement or gas, nausea, and vomiting. This complication of surgery is called post-operative ileus and is a source of discomfort for patients after surgery. In colorectal rectal surgery, this common complication results in the second most morbidity and mortality following an anastomotic leak and doubles the cost of an admission. This study is a double blinded randomised controlled trial to determine if pyridostigmine can be included as part of an enhanced recovery protocol (ERP) to reduce the duration of post-operative ileus following colorectal surgery.

Interventions

Study participants will be undergo standard peri-operative care as per our current enhanced recovery protocol (ERP). The ERP is standardised to the Royal Adelaide hospital, involving preoperatively educating patients, minimising the amount of bowel preparation, minimal fasting, carbohydrate and immunonutrition drinks. Intraoperatively this protocol aims for euvolemia, antibiotic prophylaxis as per guidelines, antiemetics, opioid sparing, multimodal analgesia and regional blocks where appropriate

Study participants will be undergo standard peri-operative care as per our current enhanced recovery protocol (ERP). The ERP is standardised to the Royal Adelaide hospital, involving preoperatively educating patients, minimising the amount of bowel preparation, minimal fasting, carbohydrate and immunonutrition drinks. Intraoperatively this protocol aims for euvolemia, antibiotic prophylaxis as per guidelines, antiemetics, opioid sparing, multimodal analgesia and regional blocks where appropriate. Intraoperatively we also aim to avoid hypoxia and hypothermia along with achieving minimally invasive surgery if possible. Postoperatively oral intake, multimodal analgesia, mobilising, DVT prophylaxis, antiemetic therapy and IV therapy is guided by the protocol. In addition patients are randomised to receive either pyridostigmine or placebo. Drug: Pyridostigmine bromide. Dose: 60 mg twice daily. Mode of administration: Oral tablet, blinded from patient and administrating staff by being encapsulated. Duration: Administered from six hours following surgery, until passage of first stool. Drug adherence: Pyridostigmine/placebo will be administered via blinded staff and recorded in the patients electronic medical records.

Sponsors

The University of Adelaide
Lead SponsorUniversity

Study design

Allocation
Randomised controlled trial
Primary purpose
Prevention
Masking
Blinded (masking used) (Subject, Caregiver, Investigator, Outcomes Assessor)

Eligibility

Sex/Gender
All
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

Inclusion criteria: • Patients over 18 years of age • Undergoing treatment from Central Adelaide Local Health Network • Able to consent • Undergoing elective large or small bowel resection for any indication or undergoing reversal of Hartmann’s or loop ileostomies or formation of stoma procedure will be invited to participate in this study.

Exclusion criteria

• Under 18 years of age. • Pregnancy • ASA >=4 due to the higher likelihood or morbidity and mortality, which may confound resulting data. • Residual active inflammatory bowel disease expected after surgery • Prolonged QT syndrome (>0.43sec for males, >0.45 for females) • Known adverse reaction to pyridostigmine • Prescribing anticholinergic medications (e.g. Glycopyrrolate for drooling; amitriptyline for loose bowel actions); • Asthma requiring regular medications (e.g. due to risk of exacerbation) • Ischaemic heart disease or cardiac arrhythmias within the previous 12 months • History of Epilepsy • History of Parkinson’s disease • History of Myasthenia gravis • Uncontrolled Hyperthyroidism • Active peptic ulcer disease • Moderate to severe renal impairment Creatinine clearance of < 30 ml/min • History of active disease affecting bowel transit (e.g. uncontrolled hypothyroidism, hypercalcaemia) • Unable to give consent or participate due to dementia, cognitive impairment or language barrier.

Outcome results

None listed

Source: ANZCTR · Data processed: Feb 6, 2026