Quantifying the sources of discrepancy between total recording time and total sleep time in home sleep apnea testing: insights from home-based polysomnography.

Study Objectives: To quantify the contribution of sleep onset latency (SOL), wake after sleep onset (WASO), and wake after sleep offset (WASF) in the discrepancy between total recording time (TRT) and total sleep time (TST) in home-based polysomnography (PSG) using patient-activated and deactivated monitoring devices.

Methods: This observational study enrolled patients with a high pretest probability of obstructive sleep apnea (OSA) who underwent unattended home-based PSG. We measured the duration of SOL, WASO, and WASF to quantify the discrepancy between TRT and TST.

Dyspnea in Oncological Patients: a Brain Teaser.

Dyspnea is one of the most common symptoms in oncological patients with greater prevalence in lung cancer and advanced disease states. Causes of dyspnea can be directly or indirectly associated with cancer, anti-neoplastic therapies and comorbidities unrelated to cancer. Routine screening of dyspnea is suggested for all oncological patients by using unidimensional, simple scales and multidimensional tools to capture more domains affected by this symptom and to assess the effectiveness of interventions.