1 / 33

“ Heart as a pump ”

“ Heart as a pump ”. Cardiac cycle. Systole of atriums. Діастола передсердь. Systole of ventricles. Діастола шлуночків. Cardiac cycle: Systole. 1. Period of tension asynchrony contraction isometric contraction

devika
Download Presentation

“ Heart as a pump ”

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. “Heart as a pump”

  2. Cardiac cycle Systole of atriums Діастола передсердь Systole of ventricles Діастола шлуночків

  3. Cardiac cycle: Systole • 1. Period of tension asynchrony contraction isometric contraction (all valves are closed) • 2. Period of ejection protosphigmic interval (opening of semilunear valves) fast ejection slow ejection

  4. Systoleof ventricles1. Period of tensionphases of : - asynchrony contraction- isometric contraction(all valves are closed) A o r t a A. pu lm LA RA LV RV

  5. Systoleof ventricles1. Period of tensionphases of : - asynchrony contraction- isometric contraction(all valves are closed)

  6. Cardiac cycle: Diastole • 1. Period of relaxation protodiastolic interval (closing of semilunear valves) phase of isometric relaxation (opening of AV-valves is end of this phase) • 2. Period of filling phase of rapid filling phase of slow filling phase of filling by help of atrium systole

  7. Systoleofventricles2. Period of ejection protosphigmic interval (opening of semilunear valvesfast ejectionslow ejection)

  8. Period of relaxation: protodiastolic interval (closing of semilunear valves) phase of isometric relaxation (opening of AV-valves is end of this phase) Diastoleof ventricles

  9. Period of filling: - phase of rapid filling - phase of slow filling Diastoleof ventricles

  10. The cardiac cycle

  11. Heart sounds. Components • I tone. 1. Valve component (AV valves) 2. Muscle component 3. Vessels component (opening of semilunear valves) 4. Atrium component • II tone. 1. Valve component(closing of semilunear valves) 2. Vessels component

  12. Heart sounds

  13. R ECG T Q S ІІ tone І tone PhCG IntervalQ-І ton Interval Т-ІІ ton Phonocardiogram

  14. Echocardiography is a method of investigation of structure and mechanical functioning of the heart which is base on registration of reflected ultrasonic signals

  15. Echocardiography • 1. M-measure • 2. D-measure • 3. Doppler • 4. Contrasting

  16. 1, 2, 3, 4 – position of echolocation; D - ultrasonic sensor; Th - chest D - breast; RV - right ventricle; LV - left ventricle; LA - left atrium, AV - aortic valve; FMV - front mitral valve; PMV - posterior mitral valve. The positions of echolocation in M-mode

  17. II position

  18. АО

  19. EDV (end-diastolic volume) = 7,0 (2,4 + EDS) · EDS³, ESV(end-systolic volume) = 7,0 (2,4 + ESS) · ESS³, Normally, in adults, EDV is 108-140 ml, and ESV within 38-50 ml. Stroke volume (SV) of the left ventricle is calculated by the formula: SV = EDV - ESV. Normally, in adults, the SV is 70-90 ml. Minute volume flow (MVF) is defined as the product of SV and heart rate. Normally, in adults, MVF is 4,0-6,5 l / min. Contractile activity of left ventricular ejection fraction characterizes (EF), defined as follows: EF = SV : EDV · 100%. Normally, in adults, EF is 54-64%. Also indexed rates of left ventricular are set indexed. For this goal obtained values of indexes should be divided by body surface area of ​​the subject, which can be calculated by the formula of Du Bois. End-diastolic (EDI), end-systolic (ESI) indices are calculated by the following formulas: EDI = EDV: P ESI = ESV: Pwhere the EDI - end-diastolic index, EDV - end-diastolic volume, ESI - end-diastolic index, ESV - end-sistolic volume, P - body surface area.

  20. Thank you!

More Related