This is probably one of my favorite video series on cardiac arrhythmias. I haven’t watched all the videos yet, but the ones I’ve completed have been great! The EKG video is also a nice introduction to the physiology behind EKG tracings if you need some help understanding that as well. This is definitely a great resource for anyone studying electrophysiology of the heart, so be sure to check it out!
In addition, I’ve added one of my favorite action potential images that can be found through Google. It’s an excellent visual representation of how each area of the heart contributes to the overall EKG tracing. Enjoy!
The following video provides an excellent explanation of how to approximate the QRS axis in order to quickly determine if a QRS axis deviation is present. This is part 2 of a series, so those unfamiliar with knowledge of EKG leads may need to begin with part 1. Just follow the video I’ve included and you should be able to find part 1 in the related videos. If you want to begin understanding how to interpret an EKG, this is a great place to start!
Imagine someone without a heartbeat, completely flatlined, yet still alert, oriented and living. Continuous flow, artificial hearts may sound like something of the future, but not anymore!
The artificial heart was constructed in a physician’s garage from materials purchased at home depot. Subsequently, experiments were conducted on animals using the homemade device. After surgically implanting the heart into these ainmals, they’d simply wake up the next day and resume their normal lifestyle. Minus one glaring difference of course… no pulse. They are flatlined.
The artificial heart works using turbines, creating a constant bloodflow throughout the body, similar to water moving through a garden hose. A patients heart would be completely removed and in its place, this artificial heart would keep their body alive. Ultimately, this could save the lives of the 300 to 400 thousand people that die from heart failure each year in the US alone.
The procedure was even performed on a man named Craig Lewis who was diagnosed with amyloidosis. The disease led to heart failure and after being examined by physicians, they determined he would die in 12 – 24 hours. This innovative device was his only chance at survival so the surgical team went to work. The next day, the patient was alert & oriented, despite his complete lack of a pulse. As stated in the video, “No heartbeat, no pulse, flatline pressure”.
Video discovered one http://www.upworthy.com