An old mentor of mine liked to say "sometimes lungs are better seen than heard."  While he was referring then to good old fashioned chest xray, current literature clearly supports the use of bedside ultrasound as a valuable tool in evaulating the dyspneic patient.  In this lecture, Dr. Jacob Avila discusses the use of the bedside ultrasound in detecting pneumonia, pulmonary embolism, congestive heart failure, and pneumothorax.