Echocardiograms can often be limited by poor sonographic windows, but using an echo contrast agent can improve visualization of the left ventricle and detect right-to-left intracardiac shunts. Introduction to the various agents, their principles and use.
I have tired of treating my ultrasound exam of a patient as separate from my physical exam. In the emergency department and ICU where I practice, ultrasound is much more than an adjunct, it is an integral part of my evaluation of the patient. The JAMA series on Rational Clinical Exami