echocardiography 1
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Two main systems | show 🗑
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| show | • Left Anterior Descending (LAD) -feeds anterior wall of LV, IVS, apex of heart
• Left Circumflex (LCx) -feeds lateral and posterior portion of LV
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| Right system | show 🗑
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| show | Arteries and Veins
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| show | Capillary level
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| • The spinal cord is posterior to the heart? | show 🗑
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| Arteries have small valves inside them to assist in the movement of flow back to the heart? | show 🗑
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| show | - located at the right atrial wall; inferior to opening of SVC,
- Has the highest degree of “automaticity”
- Native “pacemaker” of the heart
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| show | -Three: Anterior, Middle, Posterior - Feeds RA
- Bachmann’s Bundle – Feeds LA
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| show | - Connections of atria to ventricles;
- impulse slows for about .05 seconds to allow for ventricular filling
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| Bundle Branches | show 🗑
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| Purkinje fibers | show 🗑
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| Normal Intracardiac Pressures | show 🗑
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| show | represents atrial depolarization (discharge), followed immediately by atrial
systole (contraction)
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| QRS Complex | show 🗑
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| T wave | show 🗑
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| Isoelectric line | show 🗑
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| show | represents 1 complete cardiac cycle
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| show | Systole and diastole
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| show | 1 complete cardiac cycle
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| Ventricular contraction | show 🗑
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| Ventricular Systole ECG timing: | show 🗑
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| Ventricular Systole Includes 3 phases | show 🗑
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| Isovolumic Contraction Period/Time (IVCT) | show 🗑
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| Iso volumic | show 🗑
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| show | Heart volume is at its largest
No volume change because all valves are closed during this period
Duration: Valves are closed for a split second
Pressure rises rapidly in preparation for SL valve opening
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| show | Occupies the approx. first half of systole
SL Valves open
Rapid ejection of blood
Ventricular volume rapid decreases
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| show | Ventricular pressure begins to decline
Repolarization (recharging) occurs (on the T wave)
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| Ventricular Diastole | show 🗑
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| Ventricular Diastole ECG rhythm timing: | show 🗑
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| show | Isovolumic relaxation phase (time)
Early rapid filling
Diastasis
Late filling
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| show | Period begins at semilunar (SL) valve closure (endsystole) and continues until atrioventricular (AV) valve
opening
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| Isovolumic Relaxation Time/Period IVRT | show 🗑
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| show | Volume of blood pumped out of
the ventricles during systole (per
heart beat
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| SV timing | show 🗑
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| SV measurements | show 🗑
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| SV normal range | show 🗑
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| Frank-Starling Law | show 🗑
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| show | Stroke volume ~ 75 mL/beat (changes with
heart rate)
LVEDP ~ 8 mmHg
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| show | Increase venous return = increased LVEDP
= increased preload = increased SV and
vise versa
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| show | End diastolic volume (EDV) – End systolic volume (ESV)
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| Four Determinants of Left Ventricular Function | show 🗑
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| Heart Rate | show 🗑
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| Heart Rate expressed as | show 🗑
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Created by:
eduarda146
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