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Arterial Hypertension: Definition, Diagnosis and Out-of-Office Measurement

…or ambulatory pressure. Masked hypertension: office pressure below the hypertension threshold but hypertensive home or ambulatory pressure. Office measurements provide only a limited representation of…

Capnography (end-tidal carbon dioxide measurement, ETCO2) during cardiac arrest

…for a flat ETCO2 curve include: Ventilator or capnograph not activated. Displacement of the tracheal tube. Cardiac arrest without adequate blood flow or ineffective compressions…

Assessment of diastolic function by echocardiography

…is derived by measuring flow velocities across the mitral valve using pulsed Doppler. Estimating left ventricular filling pressure via e' . Measurement of deceleration time (DT…

Principles of myocardial perfusion imaging (SPECT, PET), coronary blood flow and flow reserve (CFR)

…employed to evaluate myocardial perfusion by measuring the intensity of their uptake within the myocardium. Furthermore, certain radiotracers enable direct measurement of coronary blood flow…

Overview of the ECG Waves, Deflections, Intervals, Durations

…with its most common waveforms. Important intervals and points of measurement are depicted. ECG interpretation requires knowledge of these waves and intervals. The P wave…

Lipoprotein(a): Measurement and Clinical Implications

…high Lp(a) level may lead to substantial underestimation of cardiovascular risk. Conversely, Lp(a) measurement provides limited additional reclassification beyond currently recommended global risk…

Ejection fraction (EF): Physiology, Measurement & Clinical Evaluation

…or supranormal ejection fraction , despite manifest heart failure and severe symptoms. These individuals exhibit pronounced hypertrophy, resulting in a reduction of ventricular volume and subsequently…

Fractional shortening for estimation of ejection fraction

…25% Normal FS, 2D measurement 18% Advantages of fractional shortening If ventricular geometry is normal and there are no regional wall motion abnormalities, then fractional…

ECG interpretation: Characteristics of the normal ECG (P-wave, QRS complex, ST segment, T-wave)

…this chapter, you will learn the physiological basis of all ECG waves and how to determine whether the ECG is normal or abnormal. Although heart…

The Bernoulli principle and estimation of pressure gradients

…2 ) This formula is excellent for measuring pressure gradients across small openings, such as the valves. Importantly, in the setting of valvular stenosis or regurgitation…

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