1 / 22

CARDIOVASCULAR SYSTEM THE HEART

CARDIOVASCULAR SYSTEM THE HEART. Chapter 18. SINUS RHYTHM. JUNCTIONAL RHYTHM SA node nonfunctional. SECOND DEGREE HEART BLOCK AV node blockage. VENTRICULAR FIBRILLATION. Cardiac Cycle. Diastole relaxation Systole contraction. Cardiac Cycle. Cardiac Output.

khoi
Download Presentation

CARDIOVASCULAR SYSTEM THE HEART

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. CARDIOVASCULAR SYSTEMTHE HEART Chapter 18

  2. SINUS RHYTHM

  3. JUNCTIONAL RHYTHM SA node nonfunctional

  4. SECOND DEGREE HEART BLOCK AV node blockage

  5. VENTRICULAR FIBRILLATION

  6. Cardiac Cycle Diastole relaxation Systole contraction

  7. Cardiac Cycle

  8. Cardiac Output End-diastolic volume (EDV) - Amount of blood within the ventricles before they contract. Ave = 120 ml.

  9. Cardiac Output Stroke volume (SV) - Amount of blood ejected from each ventricle in a single beat.Ave = 70 ml.

  10. Cardiac Output End-systolic volume (ESV) - Amount of blood remaining in the ventricles after they contract. Ave = 50 ml.

  11. Cardiac Output SV = EDV - ESV SV (ml/beat) = 120 ml/beat - 50 ml/beat = 70 ml/beat

  12. Cardiac Output • Cardiac output is the product of the heart rate and the stroke volume. CO = HR x SV CO (ml/min) = 75 beats/min x 70 ml/beat = 5250 ml/min

  13. Homeostatic Imbalances Tachycardia - Abnormally fast heart rate (>100 bpm). Bradycardia - Abnormally slow heart rate (<60 bpm).

  14. SINUS TACHYCARDIA

  15. SINUS BRADYCARDIA

  16. VENTRICULAR TACHYCARDIA

  17. Homeostatic Imbalances Congestive heart failure (CHF) - Abnormally low cardiac output due to failure of either ventricle to eject blood effectively. Heart attack -When damage or death of part of the heart occurs as a result of insufficient blood flow to the myocardium (ischemia), a heart attack or myocardial infarction (MI) may result.

  18. Heart disease remains the leading cause of death for both women • and men in the United States.


More Related