Echocardiography The Bernoulli principle and pressure gradients using Doppler measurements Continuous wave Doppler and pulsed wave Doppler can measure the velocity of erythrocytes as they…

…pressure gradient ≥ 5 mmHg Valve area according to the continuity equation (cm²) ≤ 1 cm² ZTime velocity integral of the tricuspid inflow (cm) 60 cm Pressure…

Info Inotropes and vasopressors Vasopressors induce vasoconstriction and increase mean arterial pressure (MAP). Inotropes increase cardiac contractile force (contractility). Several endogenous and synthetic agents exist…

Cardiology Inotropes and vasopressors Vasopressors induce vasoconstriction and increase mean arterial pressure (MAP). Inotropes increase cardiac contractile force (contractility). Several endogenous and synthetic agents exist…

…a mean gradient ≥ 40 mmHg. Fluid responsiveness Static measures such as the CVP predict fluid responsiveness poorly. Dynamic measures are better: a pulse pressure variation…

…in the parasternal short axis view. Pressure gradient and pressure half time (PHT) are also estimated using continuous Doppler. A dense regurgitant jet with rapid…

…mean pressure gradient is calculated using continuous wave (CW) doppler placed along the pulmonary valve in the parasternal short axis view (PSAX). The gradient is…

…in pronounced stenosis. Mean pressure gradient 5.0 mmHg suggests a clinically significant stenosis. Tricuspid stenosis results in increased right atrial pressure, which subsequently causes…

…Heightened awareness is essential in patients with severe aortic stenosis, particularly the low flow, low gradient phenotype, or those undergoing aortic valve replacement [1, 5…

…the S3 segment. SGLT2 also mediates proximal tubular sodium reabsorption, with chloride following passively down the resulting electrochemical gradient. By inhibiting SGLT2, these drugs produce…