Is knowledge translation adequate? A quality assurance study of staging investigations in early stage breast cancer patients

A Quality Improvement Initiative: Improving Mammogram Screening Rates Among Low-income Hispanic Women in Primary Care

BACKGROUND

Low-income women of predominantly Hispanic ethnicity between the ages of 50-74 who receive primary care services in a South Texas region experienced a 12% disparity gap for women completing a screening mammogram in the last 2 years when compared to Hispanic women nationally.

OBJECTIVE

The purpose of this quality improvement (QI) initiative is to design and implement interdisciplinary evidence-based interventions to improve the screening mammogram completion rates in a primary care clinical setting.

METHODS

Following a systematic review and selection of two evidence-based breast cancer risk screening tools, a pre-post intervention was conducted. The Knowledge-to-Action (KTA) framework was used to train staff and providers to implement the screening tools. The Breast Cancer Risk Assessment Tool (BCRAT) and the National Health Interview Survey (NHIS) provided triggers for initiating a screening mammogram.

RESULTS

Evidence-based screenings triggered mammogram initiation resulting in a 7.21% improvement in screening mammogram completion rates over a 3-month time period.

CONCLUSION/IMPLICATIONS FOR NURSING

The outcomes discussed in this report provide guidance for new policy considerations and clinical protocol initiatives along with processes to improve mammogram completion rates.

What is the Utility of Routine Complete Blood Count, Liver Function Tests, and Chest X-ray in the Evaluation of Patients with Clinically Node-Negative Breast Cancer?

National Comprehensive Cancer Network guidelines suggest a selective workup of early-stage breast cancer with complete blood count (CBC) and liver function tests (LFTs) and no longer recommend chest X-ray (CXR) to screen for occult metastasis. We evaluated the utility of routine preoperative screening tests in patients with clinically node-negative (cN0) breast cancer. We identified 1611 patients with cN0 breast cancer treated at our institution between October 1998 and December 2015; 94.4 per cent of the patients underwent at least one preoperative screening test: 90.8 per cent CBC, 89.4 per cent LFTs, and 63.6 per cent CXR. Thirty-six per cent of CBCs, 13.1 per cent of LFTs, and 6.7 per cent of CXRs were abnormal. Abnormalities led to 17 CTscans, and one found an occult metastasis. Eleven patients (0.7%) were diagnosed with metastatic disease post-operatively, but only half had abnormal preoperative screening tests. Positive predictive values of preoperative CBC, LFTs, and CXR for occult metastasis are 1.3 per cent, 1.1 per cent, and 1.5 per cent, respectively. Preoperative screening in cN0 breast cancer is of low yield. Even when abnormalities are found, metastasis is present in less than 1 per cent of patients, and a normal study does not rule out metastasis. Routine preoperative determination is not warranted, and staging studies should be limited to patients with signs or symptoms.

Overuse of Health Care Services in the Management of Cancer: A Systematic Review

BACKGROUND

Overuse, the provision of health services for which harms outweigh the benefits, results in suboptimal patient care and may contribute to the rising costs of cancer care. We performed a systematic review of the evidence on overuse in oncology.

METHODS

We searched Medline, EMBASE, the Cochrane Library, Web of Science, SCOPUS databases, and 2 grey literature sources, for articles published between December 1, 2011 and March 10, 2017. We included publications from December 2011 to evaluate the literature since the inception of the ABIM Foundation's Choosing Wisely initiative in 2012. We included original research articles quantifying overuse of any medical service in patients with a cancer diagnosis when utilizing an acceptable standard to define care appropriateness, excluding studies of cancer screening. One of 4 investigator reviewed titles and abstracts and 2 of 4 reviewed each full-text article and extracted data. Methodology used PRISMA guidelines.

RESULTS

We identified 59 articles measuring overuse of 154 services related to imaging, procedures, and therapeutics in cancer management. The majority of studies addressed adult or geriatric patients (98%) and focused on US populations (76%); the most studied services were diagnostic imaging in low-risk prostate and breast cancer. Few studies evaluated active cancer therapeutics or interventions aimed at reducing overuse. Rates of overuse varied widely among services and among studies of the same service.

CONCLUSIONS

Despite recent attention to overuse in cancer, evidence identifying areas of overuse remains limited. Broader investigation, including assessment of active cancer treatment, is critical for identifying improvement targets to optimize value in cancer care.

Incidental radiologic findings at breast cancer diagnosis and likelihood of disease recurrence

Despite guidelines recommending against its routine use, perioperative imaging for distant metastases is frequently performed in newly diagnosed breast cancer patients, uncovering incidental findings of uncertain significance. We assessed the clinical significance of incidental findings by determining if their presence is associated with disease recurrence. A retrospective review of staging imaging was performed in patients with stage II or III invasive breast cancer diagnosed during 2008-2009 at a large academic medical center. Data related to perioperative imaging and disease recurrence were abstracted from the medical record. Kaplan-Meier curves and Cox proportional hazards models were used to assess the association between incidental findings and time to disease recurrence. A total of 169 of 340 patients (49.7 %) underwent staging evaluation for distant metastases (CT chest, abdomen, pelvis, bone scan, and/or PET-CT). Of these, 146 (86.4 %) had at least one suspicious or indeterminate finding. Follow-up studies were performed in 73 (43.2 %) patients. Nineteen patients were diagnosed with metastatic disease at diagnosis, 18 of whom had stage III disease. In patients without metastatic disease at diagnosis, 32 later developed recurrence. Non-calcified pulmonary nodules were associated with shorter time to disease recurrence (hazard ratio 2.51, 95 % CI 1.13-5.57, p = 0.02). Imaging for distant metastases frequently reveals indeterminate findings, most of which are not associated with disease recurrence. The association between pulmonary nodules and recurrence warrants validation in an independent cohort. Overall, these findings support current guidelines recommending against routine extent of disease evaluation in patients with newly diagnosed stage II breast cancer.

Variation in metastatic workup for patients with invasive breast cancer

BACKGROUND

Despite guidelines, surgeons vary in the metastatic workup they order for their breast cancer patients.

METHODS

Surgeons were surveyed as to their practices in ordering staging studies for their breast cancer patients using a Web-based survey. Nonparametric analyses were performed to determine factors associated with guideline adherence.

RESULTS

Two hundred fifty-three surgeons responded to the survey; 55.8% had practices with ≥50% breast patients; 7.3% of respondents stated they always did a metastatic workup before surgery, 8.6% never did; only 52.4% ordered a metastatic workup only in patients with clinical stage III disease. Surgeons who had ≥50% breast-related practices were more likely to follow these guidelines (P = .031). Only 17% stated that a computed tomography chest/abdomen and bone scan was their "usual" metastatic workup.

CONCLUSIONS

Nearly 40% of surgeons perform metastatic workup when they are not indicated, and few adhere to National Comprehensive Cancer Network guidelines in terms of the tests ordered.