Renal dysfunction occurs following ileostomy formation and is independent of readmission.

BACKGROUND: Ileostomy formation may be permanent or intended as temporary to defunction a high-risk pelvic anastomosis to reduce the risk of septic consequences of anastomotic leak. However, these procedures have a high rate of readmission, most commonly due to dehydration and associated with acute kidney injury (AKI). METHODS: A single centre retrospective cohort study of patients who underwent ileostomy formation from 2015 to 2020 and analysed in two groups: those who needed readmission within 60 days and those who did not. Data collected included demographics and renal function and electrolytes at baseline (ileostomy formation) and at elective ileostomy closure. RESULTS: A total of 171 patients were included in the analysis, with a readmission rate 38% within 60 days of discharge. There was a significant increase in creatinine from baseline blood tests compared to date of elective ileostomy closure in both the readmission and no readmission arms. There was a significant decrease in eGFR from baseline blood tests compared with date of ileostomy closure in both readmission and no readmission arms. There was no significant difference in creatinine or eGFR between readmission and no readmission arms at date of ileostomy closure. Baseline serum sodium levels were lower in the readmission arm compared to no readmission arm. CONCLUSION: Ileostomy formation is associated with a deterioration in renal function, which occurs independent of whether the patient requires readmission to hospital. Low serum sodium may be used as a predictor for patients with an increased risk of readmission.

Risk taking propensity: Nurse, surgeon and patient preferences for diverting ileostomy.

AIM: The decision-making process to defunction a pelvic colorectal anastomosis involves complex heuristics and is framed by surgeon personality factors. Risk taking propensity may be an important factor in these decisions and patient preferences have not been evaluated alongside surgeons and nurses. METHODS: A prospective cross-sectional study involving a one-off interview and questionnaire assessing how risk taking propensity affects nurse, surgeon and patient preferences for a temporary defunctioning ileostomy (TDI) was performed. The risk taking index (RTI) was employed to evaluate risk taking propensity and the validated prospective measures of preference instruments to evaluate preferences for stoma avoidance in several scenarios by asking the individual to consider trading or gambling years of remaining life expectancy. RESULTS: One hundred and fifty participants met the inclusion criteria, which included 30 (20.0%) surgical nurses, 20 (13.3%) colorectal surgeons and 100 (66.7%) patients. Surgeons had a significantly higher RTI (mean ± SD: 26.8 ± 6.7) than patients (mean ± SD: 20.0 ± 9.8) and nurses (mean ± SD: 23.0 ± 6.6) p = 0.002. Surgeons would consider that it would be in a patient's best interest to have a TDI at an AL rate of 15% or greater, whereas nurses and patients would do so at 28% and 25%, respectively (p = 0.007). CONCLUSION: Surgeons were shown to have a higher risk taking propensity than patients and nurses but a significantly lower threshold of AL where they would consider a TDI is in the best interest of the patient.

Surgical management and long-term functional outcomes after anastomotic leak in patients undergoing minimally invasive restorative rectal resection and without a diverting ileostomy.

BACKGROUND: Anastomotic leak (AL) is the anathema of colorectal surgery, with well-documented adverse impacts on patient morbidity and mortality. The long-term consequences of AL on bowel function and quality of life (QoL) is less well-defined after minimally invasive surgery. By omitting a temporary diverting ileostomy (TDI), it is postulated that the minimally invasive approach will lead to early diagnosis and expedient management of AL. METHODS: This retrospective and cross-sectional study included patients who underwent minimally invasive restorative rectal surgery with a low pelvic colorectal anastomosis and without a TDI at two tertiary hospitals in Brisbane, Australia between 2004 and 2018. Surgical management of AL is described and long-term functional outcomes were evaluated through validated questionnaires. RESULTS: Two hundred and twenty-four patients met inclusion criteria. AL was associated with lesion proximity to the anal verge (P = 0.011), total mesorectal excision (TME) (P <0.001) and advanced malignant disease (P = 0.019). Twenty-four patients experienced an AL (11%) diagnosed at a median of 5.5 days post-operative. Survey responders (n = 99, 62%) included 10 (10%) AL and 89 (90%) non-AL patients, with a median follow-up of 4 and 6.4 years. SF-36 and FISI scores were comparable between groups, however AL patients had worse LARS scores (P = 0.028). Patients undergoing TME, irrespective of AL, had poorer low anterior resection syndrome (LARS) (P <0.001) and FISI scores (P = 0.001). CONCLUSION: AL in patients undergoing minimally invasive low pelvic colorectal anastomosis without a TDI does not impact long term QoL. The occurrence of LARS is dependent on the extent of resection, rather than the occurrence of AL.