Hemodynamic Monitoring in Cardiac Surgery

Boldt, Joachim; Hempelmann, G.

doi:10.1007/978-3-642-84167-5_11

Cited by 2 publications

(4 citation statements)

References 40 publications

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“…This formula LVSWI = SI × (LVSP -LVEDP) is being used by cardiologists who can often measure left ventricular pressure during catheterization. 8,9 LVSWI also refl ects the increased workload of the left ventricle in aortic stenosis, when there is a large pressure difference between the left ventricle and the aorta during systole. 9 Another formula, LVSWI = SI × mean arterial pressure (MAP) minus pulmonary artery capillary wedge pressure (PCWP), is commonly used when access to left heart pressure is not possible.…”

Section: Left Ventricular Stroke Work Indexmentioning

confidence: 99%

“…8,9 LVSWI also refl ects the increased workload of the left ventricle in aortic stenosis, when there is a large pressure difference between the left ventricle and the aorta during systole. 9 Another formula, LVSWI = SI × mean arterial pressure (MAP) minus pulmonary artery capillary wedge pressure (PCWP), is commonly used when access to left heart pressure is not possible. A third possible way to calculate LVSWI is to use peak systolic arterial pressure (SAP) instead of mean systolic.…”

Section: Left Ventricular Stroke Work Indexmentioning

confidence: 99%

“…13 The relationship between ventricular pressure and ventricular volume could be visualized as a closed left ventricular pressure-volume loop (LV-PVL), which is linear correlated to myocardial oxygen consumption and could quantify whole heartbeat's stroke work and contractility. 14,15 A classic ventricular function curve can be constructed by plotting coordinates of performance against preload. When contractility is increased, the stroke work versus preload relationship is shifted upward.…”

Section: Evaluating LV Function Through Pressure-volume Relationshipmentioning

confidence: 99%

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How to invasively assess left ventricular function and its efficiency of work

Povišer,

Čurila

2024

Cor Vasa

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Efektivita práce levé komory vyžaduje udržení srdečního výdeje, který je nárokován systémovým oběhem, a to bez vysokých metabolických nároků nebo nároků na kyslík ze strany myokardu levé komory. V tomto článku je levá komora uvažována jako pumpa a výkonnost je založena na hodnocení měření jejích tlaků, objemů a průtoku. Analýza funkce komory z hlediska vztahů mezi tlakem a objemem umožňuje plně analyzovat globální a regionální dynamiku komory, kterou lze poměrně snadno a přesně získat pomocí vodivostního katétru. Maximální změna tlaku za jednotku času v levé komoře je považována za ukazatel kontraktility levé komory, za jistých situací může být alternativou arteriální dP/dt max jakožto méně invazivní metoda. Při hodnocení nových kardiostimulačních technik a srdeční resynchronizační terapie se jako nejpraktičtější metoda jeví invazivní systolický krevní tlak s průměrováním více tepů a doplněním o několikrát opakované střídání stimulací.

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Section: Left Ventricular Stroke Work Indexmentioning

confidence: 99%

Section: Left Ventricular Stroke Work Indexmentioning

confidence: 99%

Section: Evaluating LV Function Through Pressure-volume Relationshipmentioning

confidence: 99%

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How to invasively assess left ventricular function and its efficiency of work

Povišer,

Čurila

2024

Cor Vasa

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“…It might be better to consider noninvasive monitoring methods to cut of expenditures when possible. [3,4] Detection of intravascular volume (IVV) status, fluid infusion if this volume was under a certain threshold, and elevation of cardiac output due to that depends on the place of the heart on the Frank-Starling curve. According to the Frank-Starling curve, preload of the heart decreases when IVV falls under a certain threshold (in the vertical part of the curve), cardiac output decreases, and tissue oxygenation is impaired as a result of the decrease in tissue perfusion.…”

Section: Introductionmentioning

confidence: 99%

Correlation of internal jugular vein, common carotid artery, femoral artery and femoral vein diameters with central venous pressure

Bayraktar¹,

Kaçmaz

2022

Medicine

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Background: This study aimed to detect the correlation of central venous pressure (CVP) with the internal jugular vein (IJV), common carotid artery (CCA), femoral vein (FV), and femoral artery (FA) diameters measured with ultrasound (USG) in patients under mechanical ventilation to evaluate whether they are suitable to be used as an alternative low-cost and noninvasive method for the detection of CVP.Methods: A total of 40 patients aged from 18 to 90 who had been receiving therapy in the intensive care unit (ICU) were included in the study. Central venous catheter was placed into the patients through right IJV or subclavian vein in their first 24-hour of hospitalization and the right atrium pressure (RAP) was measured from the catheter, the tip of which was confirmed to reach right atrium. In the same session, CCA, IJV, FA, and FV diameters were measured with USG and their correlations with CVP were calculated. In addition, correlations of the measured venous and artery diameters between each other were detected as well.Results: There was a significantly high correlation between CVP and CCA diameter (R = 0.603, P < .000). There was a significantly low correlation between CVP and IJV diameter (R = 0.352, P = .026), a significantly low correlation between FA and FV diameters (R = 0.317, P = .047), a significantly low correlation between FA and CCA diameters (R = 0.330, P = .038), and a significantly low correlation between IJV and CCA diameters (R = 0.364, P = .020).Conclusion: CVP and CCA diameters exhibited a high correlation. For detection of CVP, the ultrasonographic CCA diameter measurement can be used as an alternative noninvasive method which is easy to use and minimally affected by measurement errors of individuals and which has low learning curve compared with the other measurement methods. Abbreviations: CCA = common carotid artery, CCAD = common carotid artery diameter, CVP = central venous pressure, FA = femoral artery, FAD = femoral artery diameter, FV = femoral vein, FVD = femoral vein diameter, ICU = intensive care unit, IJV = internal jugular vein, IJVD = internal jugular vein diameter, IVC = inferior vena cava, IVCCI = inferior vena cava collapsibility index, IVV = intravascular volume, PEEP = positive end-expiratory pressure, RAP = right atrium pressure, USG = ultrasound.

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Hemodynamic Monitoring in Cardiac Surgery

Cited by 2 publications

References 40 publications

How to invasively assess left ventricular function and its efficiency of work

How to invasively assess left ventricular function and its efficiency of work

Correlation of internal jugular vein, common carotid artery, femoral artery and femoral vein diameters with central venous pressure

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