The use of a direct bronchial challenge test in primary care to diagnose asthma.

Many asthmatics in primary care have mild symptoms and lack airflow obstruction. If variable expiratory airflow limitation cannot be determined by spirometry or peak expiratory flow, despite a history of respiratory symptoms, a positive bronchial challenge test (BCT) can confirm the diagnosis of asthma. However, BCT is traditionally performed in secondary care. In this observational real-life study, we retrospectively analyze 5-year data of a primary care diagnostic center carrying out BCT by histamine provocation. In total, 998 primary care patients aged ≥16 years underwent BCT, without any adverse events reported. To explore diagnostic accuracy, we examine 584 patients with a high pretest probability of asthma. Fifty-seven percent of these patients have a positive BCT result and can be accurately diagnosed with asthma. Our real-life data show BCT is safe and feasible in a suitably equipped primary care diagnostic center. Furthermore, it could potentially reduce diagnostic referrals to secondary care.

A comparison of attitudes to laryngeal cancer treatment outcomes: A time trade-off study.

DESIGN: Time trade-off choice experiment. SETTING: Two large head and neck cancer centres. PARTICIPANTS: Patients who have received treatment for head and neck cancer and members of the head and neck cancer multidisciplinary team. MAIN OUTCOME MEASURES: Participants were asked to rank the outcome scenarios, assign utility values using time trade-off and rate the importance of survival on treatment choice. RESULTS: A total of 49 patients with head and neck cancer and 73 staff members were recruited. Chemoradiotherapy (CRT) optimal outcome was the most preferred health state (34 of 49, 69% patients, and 50 of 73, 68% staff), and CRT with complications was least preferred (27 of 49, 55% patients, and 51 of 73, 70% staff). Using time trade-off, mean utility values were calculated for CRT optimal outcome (0.73 for patients, 0.77 for staff), total laryngectomy (TL) optimal outcome (0.67 for patients, 0.69 for staff), TL outcome with complications (0.46 for patients, 0.51 for staff) and CRT with complications (0.36 for patients, 0.49 for staff). The average survival advantage required for a participant to change their preferred choice was 2.6 years. CONCLUSIONS: We have demonstrated that a significant proportion of patients with head and neck cancer and staff members would not choose CRT to manage locally advanced laryngeal cancer. Staff members rated the health states associated with laryngeal cancer treatment higher than patients who have experienced them, and this is particularly evident when considering the poorer outcomes. The head and neck cancer community should develop methods of practice and decision-making which incorporate elicitation and reporting of patient values as a central principle.