Shortness of breath
The famous St Emlyn's tackles this chief complaint http://stemlynsblog.org/induction-breathless/
These pages focuses on the use of ultrasound when assessing dyspnea
http://www.foamem.com/2014/06/03/sonocase-46yo-shortness-of-breath-guest-post-by-jacob-avila-ultrasoundmd-foamed/ https://sonospot.wordpress.com/2013/12/02/sonocase-32yo-shortness-of-breath-by-vinced-foamed/
Medical student focused podcast on cardinal presentation of shortness of breath
https://emtoxcast.com/2016/06/10/dyspnea-for-em-students-sorting-through-the-differential/