Items tagged “pocus”
93 results found
Posterior vitreous detachment
Posterior vitreous detachment (PVD), also known as hyaloid detachment, occurs when the retinal layer and vitreous body/posterior hyaloid membrane dissociate, with an intervening fluid collection forming in the subhyaloid space. It is thought to be a common consequence of aging, occurring in more...
Central retinal vein occlusion
A leading cause of monocular vision loss, central retinal vein occlusion (CRVO) is most commonly caused by thrombosis of the central retinal vein, resulting in retinal edema and hemorrhage. Terminology Occlusion of the central retinal vein is subclassified as ischemic and non-ischemic based on...
Abnormal testicular Doppler flow (differential)
Abnormal testicular Doppler flow (arterial, venous, or both) can be a differential challenge. Always remember that the patient's presenting history helps quite a bit in narrowing the differential. Reduced flow partial testicular torsion (<360 degrees) venous outflow is obstructed first, resul...
Pyogenic Flexor Tenosynovitis
Pyogenic flexor tenosynovitis is a serious infection of the flexor tendon sheath of a finger that can lead to devastating consequences if delayed1, 2. With the early diagnosis and treatment of pyogenic flexor tenosynovitis, the serious sequela of infection are markedly decreased. In a large seri...
Acute cor pulmonale (ultrasound)
Diagnosis not applicable
Published 02 Nov 2020
Published 31 Oct 2020
The stroke volume (SV) is referred to as the volume of blood ejected into the aorta or main pulmonary artery during each cardiac cycle. The stroke volume index (SVI) is the stroke volume corrected for the body surface area (BSA). Usage The stroke volume is another integral parameter used for t...
Published 20 Dec 2020
Normal airway anatomy (ultrasound)
Diagnosis not applicable
Published 24 Feb 2021
The Lindegaard ratio refers to the calculated product of the mean flow velocities in the middle cerebral artery and the ipsilateral extracranial internal carotid artery, as measured by transcranial Doppler 1. Its primary utility is, in the context of increased MCA velocities after subarachnoid h...
Pericapsular nerve group block (ultrasound-guided)
Pericapsular nerve group (PENG) blocks are one approach for delivering anesthesia to the hip joint. It is most commonly used in patients with fractures of the hip and bony pelvis 1. Indications acetabular fractures 5 pubic rami fractures proximal femoral fractures intertrochanteric fractur...
Wrist arthrocentesis (ultrasound-guided)
Wrist arthrocentesis refers to the aspiration of an effusion in the radiocarpal joint. It serves primarily as a diagnostic modality to determine fluid composition, and may function secondarily to reduce pain associated with capsular stretch. The dynamic, ultrasound-guided technique will be descr...
Echocardiography refers broadly to the use of diagnostic ultrasound as it pertains to the heart and cardiovascular system. The features of the imaging equipment used, as well as the principles underlying image generation, are analogous to other sonographic applications. It is primarily used to n...