3189 results
Chronic SVC Stenosis with Caudal Blood Flow of Dilated Abdominal Veins

60 y/o hx of seizures &
Chronic SVC Stenosis ... What is the cause ... collaterals - SVC ... suggesting a possible SVC ... stenosis of his SVC
Pemberton's Sign caused by a Retrosternal Thyroid Goiter

Elevating the arms causes the previously flat neck veins
Pemberton's Sign caused ... Elevating the arms causes ... vascular #neck #mass #SVC
Causes of SVC Syndrome - Differential Diagnosis Framework
 • Benign (15-40%): Thrombosis (aka catheter-associated), Goiter, Fibrosing
Causes of SVC Syndrome ... Medicine @SCVMCMed #SVC
Causes of Superior Vena Cava (SVC) Syndrome 
Malignant Causes (2/3 of cases)
 - 95%
Causes of Superior ... Vena Cava (SVC) ... Syndrome Malignant Causes ... - Infectious causes ... Thomas28George #SVC
Kussmaul's #sign is the paradoxical increase or failure to fall of mean #JVP with inspiration. Commonest
Commonest cause ... sided cardiac masses ... and even SVC obstruction ... cause it.
Dilated Abdominal Veins and Caput Medusae - Direction of Blood Flow

Vein Milking technique can be used
determine the cause ... • IVC Obstruction ... • SVC Obstruction
Persistent Left Superior Vena Cava and Unroofed Coronary Sinus
Bubble study for cryptogenic stroke.  Left arm
shows persistent LSVC ... unroofed CS → R SVC ... rarely absent →Cause
Grading System for Superior Vena Cava Syndrome
 • Grade 0 - Asymptomatic - Radiographic superior vena
visual disturbances caused ... VenaCava #Syndrome #SVC
Causes of Tachycardia - Differential Diagnosis Algorithm
Narrow Complex - Regular:
 • Sinus tachycardia
 • Atrial flutter
Causes of Tachycardia ... QRS • Regular SVT ... • Irregular SVT ... • Irregular SVT ... Diagnosis #Algorithm #Causes
Vasopressors and Inotropes - Pharmacology Summary
Vasopressors
Phenylephrine (alpha-1)
 • Increases BP, SVR
 • Risk of reflex bradycardia
Increases BP, SVR ... Increases BP, SVR ... Increases HR, SVR ... • Higher doses cause ... cAMP/cGMP • Causes