Quality improvement measures: effects on rectal cancer tissue biopsy process

Delay in histologically confirming rectal cancer may lead to late treatment as histological confirmation is required prior to chemo-radiotherapy or surgical intervention. Multidisciplinary colorectal meetings indicate that there are patients who require multiple tissue biopsy episodes prior to histologically confirming rectal cancer. The purpose of this paper is to examine a quality improvement (QI) measure's impact on tissue biopsy process diagnostic yield.

The authors performed the study in two phases (pre- and post-QI), between February 2012 and April 2014 in a district general hospital. The QI measures were derived from process mapping a rectal cancer diagnostic pathway. The primary outcome was to assess the tissue biopsy process diagnostic yield. The secondary outcome included total breaches for a 62-day target in the pre- and post-QI study phases.

There was no significant difference in demographics or referral mode in both study phases. There were 81 patients in the pre-QI phase compared to 38 in the post-QI phase, 68 per cent and 74 per cent were referred via the two-week wait urgent pathway, respectively. Diagnostic tissue biopsy process yield improved from 58.1 to 77.6 per cent after implementing the QI measure ( p=0.02). The 62-day target breach was reduced from 14.8 to 3.5 per cent ( p=0.42).

Simple QI measures can achieve significant improvements in rectal cancer diagnostic tissue biopsy process yields. A multidisciplinary approach, involving process mapping and cause and effect modelling, proved useful tools.

A process mapping exercise and QI measures resulted in significant improvements in diagnostic yield, reducing the episodes per patient before histological diagnosis was confirmed.