Cardiac Cycle | Cardiology | Systole & Diastole | Cardiovascular🫀

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#drnajeeb #cardiology #cardiaccycle #medicines #systolic #diastolic Cardiac Cycle | Cardiology | Systole & Diastole | Cardiovascular🫀 Like this video? Sign up now on our website at https://www.DrNajeebLectures.com to access 1000+ Exclusive videos on Basic Medical Sciences & Clinical Medicine. These are premium videos (NOT FROM YOUTUBE). All these videos come with English subtitles & download options. Sign up now! Get Lifetime Access for a one-time payment of $24 ONLY! Sign up now on our website at https://members.drnajeeblectures.com/ --------------------------------------------------------------------------------------------------------------------------- Why sign up for premium membership? Here's why! Membership Features for premium website members. 1. More than 1000+ Medical Lectures. 2. Basic Medical Sciences & Clinical Medicine. 3. Mobile-friendly interface with android and iOS apps. 4. English subtitles and new videos every week. 5. Download option for offline video playback. 6. Fanatic customer support and that's 24/7. 7. Fast video playback option to learn faster. 8. Trusted by over 2M+ students in 190 countries. --------------------------------------------------------------------------------------------------------------------------- ▬▬▬▬▬▬▬▬▬▬ Contents of this video ▬▬▬▬▬▬▬▬▬▬ 00:00:00 Start 00:00:47 What Is Cardiac Cycle? 00:01:41 Events In Left Side Of Heart 00:07:49 Onset Of Ventricular Contraction 00:10:52 Closure Of Mitral Valve (First Heart Sound) 00:12:30 Isovolumetric Contraction 00:14:30 C Wave 00:18:30 Rapid Ventricular Ejection 00:22:49 V Wave 00:25:43 Slow Ventricular Ejection Phase 00:30:45 Isovolumetric Relaxation 00:35:10 Rapid Passive Ventricle Filling Phase 00:38:50 Slow Passive Filling Phase 00:42:12 Repetition Of Cycle 00:43:05 Time Od Systole And Diastole 00:45:30 Heart Sound During Cycle 00:49:55 Pressures In Multiple Vessels And Chambers 00:50:53 Q&A About S3 And S4 00:51:55 Graphical Representation Of Cardiac Cycle 00:52:26 Parameters 00:52:45 Atrial Contraction 00:57:06 Rapid Progressive Filling Phase 01:05:06 S3 Sound 01:05:22 Slow Progressive Filling Phase 01:05:38 S4 Sound 01:08:45 Ecg 01:10:30 Summary --------------------------------------------------------------------------------------------------------------------------- The cardiac cycle is the performance of the human heart from the beginning of one heartbeat to the beginning of the next. It consists of two periods: one during which the heart muscle relaxes and refills with blood, called diastole, following a period of robust contraction and pumping of blood, dubbed systole. After emptying, the heart immediately relaxes and expands to receive another influx of blood returning from the lungs and other systems of the body, before again contracting to pump blood to the lungs and those systems. A normally performing heart must be fully expanded before it can efficiently pump again. Assuming a healthy heart and a typical rate of 70 to 75 beats per minute, each cardiac cycle, or heartbeat, takes about 0.8 seconds to complete the cycle. There are two atrial and two ventricle chambers of the heart; they are paired as the left heart and the right heart—that is, the left atrium with the left ventricle, the right atrium with the right ventricle—and they work in concert to repeat the cardiac cycle continuously, (see cycle diagram at right margin). At the start of the cycle, during ventricular diastole–early, the heart relaxes and expands while receiving blood into both ventricles through both atria; then, near the end of ventricular diastole–late, the two atria begin to contract (atrial systole), and each atrium pumps blood into the ventricle below it. During ventricular systole the ventricles are contracting and vigorously pulsing (or ejecting) two separated blood supplies from the heart—one to the lungs and one to all other body organs and systems—while the two atria are relaxed (atrial diastole). This precise coordination ensures that blood is efficiently collected and circulated throughout the body. --------------------------------------------------------------------------------------------------------------------------- Join this channel to get access to perks: Sign up now on our website at https://members.drnajeeblectures.com/#!/register-fast https://www.youtube.com/channel/UCPHpx55tgrbm8FrYYCflAHw/join Follow us on Facebook :- https://www.facebook.com/DrNajeeb/ Follow us on Instagram :- https://www.instagram.com/drnajeeblectures/