Browsing Tag

ultrasound

The Doppler Effect

The Doppler effect refers to a shift in frequency perceived by an object in motion relative to the source of a wave. When applying this to ultrasonography, the transducer is a stationary source of ultrasound waves of a known frequency…

TTE – IVC Assessment With Right Heart Pathology

Point-of-care ultrasound (POCUS, “bedside ultrasound”) is useful for so many things in the intensive care and perioperative settings. I routinely utilize POCUS to assess my patients’ cardiac contractility, intravascular volume status,…

Intracardiac Echocardiography (ICE)

Intracardiac echocardiography (ICE) allows cardiologists to visualize cardiac structures (aorta, valves, pulmonary veins, chambers, etc) from an ultrasound catheter usually threaded into the right atrium (RA) or right ventricle (RV) from…

Ultrasound Pleural Effusion And Spine Sign

In this ultrasound still image, I have a phase array probe positioned on the left side of the body around the 8th rib. A left-sided pleural effusion is noted. It's important to appreciate this view to look for free fluid in the subphrenic…

Instagram Live – Principles Of Ultrasound

Ultrasound is not only a great bedside diagnostic modality, but it's routinely used to guide procedures like line placement, peripheral nerve blocks, and thora/paracentesis. It relies on pulses of high frequency sound waves reflecting off…

Lung Sliding On Ultrasound

During normal respirations, the parietal pleura slides over the visceral pleura. This movement can be visualized with ultrasound. The lack of sliding can be a concerning sign for pneumothorax, although data suggests that such a finding may…