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The Bernoulli principle and estimation of pressure gradients

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…

🟠 Right ventricle, pulmonary artery, pulmonary artery pressure

…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…

🟠 Inotropes and Vasopressors

…min Safe for peripheral use +++++ +++ ++ 0 Potent vasoconstrictor with mild inotropic effect. Increases systolic pressure, diastolic pressure and pulse pressure with minimal effect on CO…

Inotropes and Vasopressors: Doses, indications, contraindications and effects

…min Safe for peripheral use +++++ +++ ++ 0 Potent vasoconstrictor with mild inotropic effect. Increases systolic pressure, diastolic pressure and pulse pressure with minimal effect on CO…

Circulatory and haemodynamic parameters

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

Pulmonary regurgitation

…Pressure gradient and pressure half time (PHT) are also estimated using continuous Doppler. A dense regurgitant jet with rapid deceleration (short PHT) is suggestive of…

Pulmonary stenosis

…status and may be estimated with echocardiography. The PASP is an independent predictor of survival and for elevated left ventricular filling pressures (Lam et al…

Tricuspid stenosis

…there is no consensus regarding grading of tricuspid stenosis severity. Tricuspid stenosis is visually characterized by thickened leaflets, with reduced motion and potentially fused commisures…

Cardiac amyloidosis

…10]. Physical examination may reveal a normal or low pulse pressure, an elevated jugular venous pressure with a paradoxical rise on inspiration (Kussmaul sign), and…

SGLT2 Inhibitors for Cardiovascular and Renal Protection

…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…

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