Background: Lung ultrasonography is increasingly used in the emergency department (ED) as a standard adjunct in the evaluation of the breathless patient. The study objective was to ascertain the diagnostic accuracy of lung and cardiac ultrasound in undifferentiated dyspneic ED patients. Methods: We conducted this prospective observational study on patients presenting with dyspnea in the ED of a tertiary hospital. The sonographers who performed lung and cardiac ultrasound according to a locally-designed protocol were blinded to clinical and radiologic results. Ultrasonographic findings were subsequently compared with the final adjudicated diagnoses. Results: Between February and August 2015, 231 patients were recruited. There was male predominance (63.2%) with a mean age of 67.8 years. Overall, lung ultrasonography yielded correct diagnoses in 68.3% of patients. Our protocol had likelihood ratios of 3.63 [95% confidence interval (CI): 2.44-5.40], 3.73 (95%

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Introduction: During the first wave of the COVID-19 pandemic in Singapore, clinical attachments for medical and nursing students were temporarily suspended and replaced with online learning. It is unclear how the lack of clinical exposure and the switch to online learning has affected them. This study aims to explore their perceptions of online learning and their preparedness to COVID-19 as clinical postings resumed. Methods: A cross-sectional study was conducted among undergraduate and graduate medical and nursing students from three local universities, using an online self-administered survey evaluating the following: (1) demographics; (2) attitudes towards online learning; (3) anxieties; (4) coping strategies; (5) perceived pandemic preparedness; and (6) knowledge about COVID-19. Results: A total of 316 responses were analysed. 81% agreed with the transition to online learning, most citing the need to finish academic requirements and the perceived safety of studying at home. More nursing students than medical students (75.2% vs 67.5% p=0.019) perceived they had received sufficient infection control training. Both groups had good knowledge and coping mechanisms towards COVID-19. Conclusions: This study demonstrated that medical and nursing students were generally receptive to this unprecedented shift to online learning. They appear pandemic ready and can be trained to play an active part in future outbreaks.

We share a rare case of an older adult patient with situs inversus totalis (mirror image of all viscera, including dextrocardia) and congenitally corrected transposition of the great arteries who presented with supraventricular tachycardia. We highlight the unique electrocardiographic characteristics of these rare conditions and the importance of electrocardiogram interpretation skills. ( Level of Difficulty: Advanced. )