Preload and Afterload Nursing | Stroke Volume, Cardiac Output Explained

Preload vs. afterload nursing review of stroke volume and cardiac output.

What is cardiac preload and afterload?

Cardiac preload is the amount the ventricle stretch at the end of diastole. Diastole is the filling or relaxation phase of the cardiac cycle. Preload is the amount of blood volume that fills that ventricle when the filling phase is over. Therefore, it is also called the end-diastolic volume (EDV).

Cardiac afterload is the pressure the ventricles must work against to open the semilunar valves so blood can leave the ventricle and enter either the lungs or systemic circulation. Afterload is influenced by vascular resistance, which is either pulmonary (which affects the right ventricle) or systemic vascular resistance (which affects the left ventricle).

Preload and afterload play an important role in affecting cardiac output because they influence stroke volume. Cardiac output is the amount of blood pumped by the heart per minute, and it's calculated by the heart rate times the stroke volume.

Stroke volume is the amount of blood pumped by a ventricle per beat. The three factors that influence stroke volume are contractility, preload, and afterload.

Quiz: https://www.registerednursern.com/preload-vs-afterload-heart-nursing-quiz/

Notes: https://www.registerednursern.com/preload-and-afterload-cardiac-nclex-review/

More Cardiac NCLEX Review: https://www.youtube.com/playlist?list=PLQrdx7rRsKfV8fuU05Yzw1fAcLbKUu4bB
Nursing Gear: https://teespring.com/stores/registerednursern

Facebook: https://www.facebook.com/RegisteredNurseRNs
Instagram: https://www.instagram.com/registerednursern_com/
Twitter: https://twitter.com/NursesRN

#preloadafterload #strokevolume #cardiacoutput #cardiacnursing

Subscribe: http://www.youtube.com/subscription_center?add_user=registerednursern

Nursing School Supplies: http://www.registerednursern.com/the-ultimate-list-of-nursing-medical-supplies-and-items-a-new-nurse-student-nurse-needs-to-buy/

Popular Playlists:

NCLEX Reviews: https://www.youtube.com/playlist?list=PLQrdx7rRsKfWtwCDmLHyX2UeHofCIcgo0
Fluid & Electrolytes: https://www.youtube.com/playlist?list=PLQrdx7rRsKfWJSZ9pL8L3Q1dzdlxUzeKv
Nursing Skills: https://www.youtube.com/playlist?list=PLQrdx7rRsKfUhd_qQYEbp0Eab3uUKhgKb
Nursing School Study Tips: https://www.youtube.com/playlist?list=PLQrdx7rRsKfWBO40qeDmmaMwMHJEWc9Ms
Nursing School Tips & Questions" https://www.youtube.com/playlist?list=PLQrdx7rRsKfVQok-t1X5ZMGgQr3IMBY9M
Teaching Tutorials: https://www.youtube.com/playlist?list=PLQrdx7rRsKfUkW_DpJekN_Y0lFkVNFyVF
Types of Nursing Specialties: https://www.youtube.com/playlist?list=PLQrdx7rRsKfW8dRD72gUFa5W7XdfoxArp
Healthcare Salary Information: https://www.youtube.com/playlist?list=PLQrdx7rRsKfVN0vmEP59Tx2bIaB_3Qhdh
New Nurse Tips: https://www.youtube.com/playlist?list=PLQrdx7rRsKfVTqH6LIoAD2zROuzX9GXZy
Nursing Career Help: https://www.youtube.com/playlist?list=PLQrdx7rRsKfVXjptWyvj2sx1k1587B_pj
EKG Teaching Tutorials: https://www.youtube.com/playlist?list=PLQrdx7rRsKfU-A9UTclI0tOYrNJ1N5SNt
Dosage & Calculations for Nurses: https://www.youtube.com/playlist?list=PLQrdx7rRsKfUYdl0TZQ0Tc2-hLlXlHNXq
Diabetes Health Managment: https://www.youtube.com/playlist?list=PLQrdx7rRsKfXtEx17D7zC1efmWIX-iIs9

Видео Preload and Afterload Nursing | Stroke Volume, Cardiac Output Explained канала RegisteredNurseRN