Disclosure: The authors have no financial or other potential conflicts of interest.BACKGROUND: Central venous catheter (CVC) insertions are performed frequently by internal medicine residents.Complications, including arterial puncture and pneumothorax, decrease when operators use fewer needle passes to insert the CVC. In this study, we evaluated the effect of simulation-based mastery learning on CVC insertion skill. DESIGN:This was a cohort study of internal jugular (IJ) and subclavian (SC) CVC insertions by 41 internal medicine residents rotating through the medical intensive care unit (MICU) over a five-month period. Thirteen traditionallytrained residents were surveyed about the number of needle passes, complications, and procedural self-confidence on CVCs inserted in the MICU. Concurrently, 28 residents completed simulation-based training in IJ and SC CVC insertions. Simulator-trained residents were expected to perform CVC insertions to mastery standards on a central line simulator. Simulator-trained residents then rotated through the MICU and were surveyed regarding CVC placement. The impact of simulation training was assessed by comparing group survey results. Central venous catheter (CVC) insertions are commonly performed at the bedside in medical intensive care unit (MICU) settings. Internal medicine residents are required to demonstrate knowledge regarding CVC indications, complications, and sterile technique, 1 and often perform the procedure during training. Education in CVC insertion is needed because many internal medicine residents are uncomfortable performing this procedure. 2 CVC insertion also carries the risk of potentially life-threatening complications including infection, pneumothorax, arterial puncture, deep vein thrombosis, and bleeding. Education and training may also contribute to improved patient care because increased physician experience with CVC insertion reduces complication risk. 3,4 Similarly, a higher number of needle passes or attempts during CVC insertion correlates with mechanical complications such as pneumothorax or arterial punctures. 4-8 Pneumothorax rates for internal jugular (IJ) CVCs have been reported to range from 0% to 0.2% and for subclavian (SC) CVCs from 1.5% to 3.1%. 4,5 The arterial puncture rate for IJ CVCs ranges from 5.0% to 9.4% and for SC CVCs from 3.1% to 4.9%. 4,5 Proper use of ultrasound to assist with IJ CVC insertion has been shown to decrease these mechanical complications. 4,5 However, studies of ultrasound use with SC CVC insertion have mixed results. 4 Simulation-based training has been used in medical education to increase knowledge, provide opportunities for deliberate and safe practice, and shape the development of RESULTS: Journal of Hospital Medicine Vol 4 No 7 September 2009 397clinical skills. 9,10 We previously used simulation-based mastery learning to improve the thoracentesis and advanced cardiac life support (ACLS) skills of internal medicine residents. 11,12 Although a few small studies have linked simulation-based interventions to imp...

; on behalf of the American Thoracic Society Assembly on Sleep and Respiratory Neurobiology THIS OFFICIAL CLINICAL PRACTICE GUIDELINE OF THE AMERICAN THORACIC SOCIETY WAS APPROVED MAY 2019 Background: The purpose of this guideline is to optimize evaluation and management of patients with obesity hypoventilation syndrome (OHS). Methods: A multidisciplinary panel identified and prioritized five clinical questions. The panel performed systematic reviews of available studies (up to July 2018) and followed the Grading of Recommendations, Assessment, Development, and Evaluation evidence-to-decision framework to develop recommendations. All panel members discussed and approved the recommendations. Recommendations: After considering the overall very low quality of the evidence, the panel made five conditional recommendations. We suggest that: 1) clinicians use a serum bicarbonate level ,27 mmol/L to exclude the diagnosis of OHS in obese patients with sleepdisordered breathing when suspicion for OHS is not very high (,20%) but to measure arterial blood gases in patients strongly suspected of having OHS, 2) stable ambulatory patients with OHS receive positive airway pressure (PAP), 3) continuous positive airway pressure (CPAP) rather than noninvasive ventilation be offered as the first-line treatment to stable ambulatory patients with OHS and coexistent severe obstructive sleep apnea, 4) patients hospitalized with respiratory failure and suspected of having OHS be discharged with noninvasive ventilation until they undergo outpatient diagnostic procedures and PAP titration in the sleep laboratory (ideally within 2-3 mo), and 5) patients with OHS use weight-loss interventions that produce sustained weight loss of 25% to 30% of body weight to achieve resolution of OHS (which is more likely to be obtained with bariatric surgery). Conclusions: Clinicians may use these recommendations, on the basis of the best available evidence, to guide management and improve outcomes among patients with OHS.

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Hospital staff and patients agreed that pain, vital signs and tests were top sleep disrupters. However, pain was associated with the greatest objective sleep loss, highlighting the need for proactive screening and management of patient pain to improve sleep in hospitals.

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