[Glossary] M mode measurement
Ventricle Measure
- IVSd: Interventricular septum in diastole
- LVIDd : Left ventricular internal diameter end diastole
- LVPWd: Left ventricular Posterior wall in diastole
- IVSs: Interventricular septum in systole
- LVIDs: Left ventricular internal diameter end systole
- LVPWs: Left ventricular posterior wall in systole
- BSA: Body Surface Area = (Height * Weight / 3600)^½
- EDV(ml): End diastolic volume, amount of blood in the ventricle during diastole
= (7 * LVIDd(cm)3) / (2.4 + LVIDd(cm)) - ESV(ml): End systolic volume, amount of blood in ventricle after systole
= = (7 * LVIDs(cm)3) / (2.4 + LVIDs(cm)) - EDV Index: End-diastolic volume index, referred to as EDV corrected for BSA
- = EDV / BSA
- ESV Index: End- systolic volume index
- = ESV / BSA
- SV: Stroke volume, volume of blood pumped from the heart in one cycle of diastole and systole, is affected by Preload, contractility and Afterload
- = EDV – ESV
- CO: Cardiac output, quantity of blood pumped per minute through the aorta and into the peripheral circulation, is proportional to (Arterial pressure / Total peripheral resistance)
- = SV * HR
- EF: Ejection fraction, reflects the percentage of blood ejected from the ventricle
- = SV / EDV * 100%
- FS: Fractional shortening
- = (LVIDd – LVIDs) / LVIDd * 100%
