Inappropriate referrals and unnecessary hospital admissions are ongoing patient safety problems. This cohort study set in Norway examined the impact of emergency physician referral thresholds from out-of-hours services on patient outcomes.  

Diagnostic errors continue to be a source of patient harm. This retrospective study identified patient- and organizational-level factors contributing to misdiagnosis of chronic wounds in primary care. Less than half of patients referred from primary care to specialist wound care teams had the correct diagnosis. Notably, 36% of patients who presented to primary care had signs of infection, however 61% received antibiotics, raising concerns of antibiotic overuse.

Missed diagnosis of infectious diseases can have serious consequences for patient safety. This article describes a delayed diagnosis of disseminated tuberculosis in a patient with lung cancer and discusses the how cognitive biases and systems failures contributed to the diagnostic error.

Metacognition (e.g., when one reflects on one’s own decision and decision making) is an approach to reducing diagnostic errors. Using data from the Melanoma Pathology Study (M-PATH) and Breast Pathology Study (B-PATH), researchers assed pathologists’ metacognition by examining their diagnostic accuracy and self-confidence. Results showed pathologists with increased metacognition sensitivity were more likely to request a second opinion for incorrect diagnosis than they were for a correct diagnosis.

Root cause analysis is a commonly used tool to identify systems-related factors that contributed to an adverse event. This study assessed a system-based approach, (i.e., collaborative case reviews (CCR) co-led by radiology and an institutional patient safety program) to identify contributing factors and explore the strength of recommended actions in the radiology department at a large academic medical center. Stronger action items, such as standardization of processes, were implemented in 41% of events, and radiology had higher completion rates than other hospital departments.

Incomplete or delayed referrals from primary care providers to specialty care can cause diagnostic delays and patient harm. A systems engineering analysis was conducted to identify vulnerabilities in the referral process and develop a framework to close the loop between primary and specialty care. Low reliability processes, such as workarounds, were identified and human factors approaches were recommended to improve successful referral rates.

Radiofrequency identification (RFID) technology has been most commonly used in perioperative settings to improve patient safety. This study explored whether RFID technology can improve process measures in laboratory settings, such as order tracking, specimen processing, and test result communication. Findings indicate that RFID-tracked orders were more likely to have completed testing process milestones and were completed more quickly.

Autopsies are an important tool for identifying diagnostic errors. This retrospective study of 821 pediatric cancer deaths found that 10% had a major diagnostic discrepancy between antemortem and postmortem diagnoses. These discrepancies primarily consisted of missed infections, missed cancer diagnoses, and organ complications.

Delayed diagnosis is a critical patient safety concern. This cohort study, consisting of 3,500 patients with tuberculosis (TB) over a 17-year period, found that more than three-quarters of patients experienced at least one missed opportunity for a diagnosis in the year before they were finally diagnosed with TB. The average duration of the diagnostic delay was nearly 32 days. Missed opportunities occurred most commonly in outpatient settings. A previous WebM&M commentary discusses patient harm resulting from a missed TB diagnosis.

Delays in diagnosis and treatment during after-hours care pose serious threats to patient safety. This case-control study compared missed acute coronary syndrome (ACS) cases to other cases with chest discomfort occurring during out-of-hours services in primary care. Predictors of missed ACS included the use of cardiovascular medication, non-retrosternal chest pain, and consultation of the supervising general practitioner.   

Patient safety in primary care is an emerging focus. This cross-sectional study across primary care clinics in England explored the main factors contributing to patient-reported harm experiences. Factors included incidents related to communication, care coordination, and incorrect or delayed; diagnosis and/or treatment.

This study surveyed 9,206 adults across the United States about their perceptions of medical errors occurring in ambulatory care settings. Thirty-six percent of respondents perceived that their doctor has ever made a mistake, provided an incorrect diagnosis, or given an incorrect (or delayed) treatment. According to these findings, patient-perceived medical errors and harms occurred most commonly in women and those in poor health with comorbid conditions.  

The COVID-19 pandemic has led to patients delaying or forgoing necessary health care.  Comparing the same 10-week period in 2018, 2019 and 2020, researchers used data from seven hospitals in northern-central Italy to assess the impact of COVID-19 on cancer diagnoses. Compared to prior years, cancer diagnoses overall fell by 45% in 2020. Researchers noted the largest decrease in cancer diagnoses among skin, colorectal, prostate, and bladder cancers.  

Diagnostic errors, including missed diagnoses of adolescent depression, elevated blood pressure, and delayed response to abnormal lab results, are common in pediatric primary care. Building upon previous work, this study used root cause analyses to identify the failure points and contributing factors to these errors. Omitted process steps included failure to screen for adolescent depression, failure to recognize and act on abnormal blood pressure values, and failure to notify families of abnormal lab results. Factors contributing most commonly to these errors were patient volume, inadequate staffing, clinic environment, electronic and written communication, and provider knowledge.

Routine depression screening by primary care providers is recommended to decrease risk of suicide and self-harm. Using unannounced standardized patient visits, researchers were able to compare depression screening rates before and after intervention (including personalized provider feedback). Depression screenings were completed more frequently up to one-year postintervention.

Radiological exams are often ordered but go unscheduled, which can delay diagnoses and lead to other medical errors. In this retrospective study at one academic institution, the clinical necessity of 700 unscheduled radiologic examination orders (100 from each of seven different radiographic modalities) was examined. Study results indicate that, except for CT, obstetric ultrasound and fluoroscopy radiologic tests, the majority of unscheduled orders are clinically necessary and that 7% of all radiologic examination orders remain unscheduled a month or more after the order was placed.

Clear communication between primary care physicians and the providers to whom they refer patients has important implications for achieving accurate diagnosis and appropriate treatment plans for patients. In this observational study, researchers included 6603 patients from 68 general medical practices in Ireland, randomly selecting 100 patients from each practice and excluding patients without complete records. They analyzed referral documentation and responses received from subspecialists as well as discharge summaries from hospitalizations over a 2-year period, compared with established national standards. Although 82% of referral letters included current medications, only 30% of response letters and discharge summaries contained medication changes and 33% had medication lists. The authors conclude that significant communication gaps exist between primary and secondary care and that further research is needed to understand how to address them. A past PSNet perspective discussed challenges associated with care transitions.