Hypertension symptoms and categories | Health & Medicine | Khan Academy

All right. Let’s talk about hypertension. And the first thing we have to do is understand the two main categories, or types, of hypertension that are out there. So there are two types, primary– and this is actually also called essential hypertension. You might hear that word, essential. And secondary. And I’ll write that as a two. And […]

Calculate your own body mass index | Miscellaneous | Heatlh & Medicine | Khan Academy

So let’s talk about body mass index, BMI. This is a term that’s often discussed, and so let’s first figure out how it’s calculated. How do we figure this out? So if you have a little stick person, what you could do is have them step on a scale. And you get their weight. So the first thing […]

Learn how a stethoscope can help determine blood pressure | NCLEX-RN | Khan Academy

So this is a picture of Doctor Korotkoff. Doctor Korotkoff is a very famous Russian doctor. He lived about 100 years ago, and something he came up with, something very clever, still affects all of us, or most of us today. So he lived in the early 1900s. And around 1905, he started thinking. He was thinking about […]

Aortic Stenosis Explained Clearly – Diagnosis and Treatment

I am welcome to another MedCram lecture we’re going to talk about aortic stenosis and specifically the pathology the pathophysiology and the clinical aspects of this condition first I want to just remind you the anatomy of the heart for those of you who are starting with us knew here so we know we’ve got the right atrium […]

OBSOLETE NECESSITY: Do we still need the stethoscope?

[HOPEFUL MUSIC PLAYS] I think one of the nice things about the stethoscope is that you really can’t use this tool without getting quite close to the patient, and there’s something quite intimate about putting this on yourself, and then putting it on the patient’s body. It was invented first in 1816 by René Laennec, and it was […]

What is hypertension? | Circulatory system diseases | Health & Medicine | Khan Academy

Let’s talk about hypertension. And I’ll write that here, hypertension. And hypertension basically means high blood pressure. And we actually categorize it in different groups. So let’s use my blood pressure, 115 over 75 as an example. And I had drawn a small figure for you where I had blood pressure on this side and I had time […]

Antibiotic Envelope for Cardiac Implantable Device Infection Prevention

♪ Number seven. Antibiotic Envelope for Cardiac Implantable Device Infection Prevention. Pacemakers and defibrillators are lifesaving electrical marvels, but do not come without risk. Infections occur in 1-4% of cardiac device implantations and can lead to a 25% one-year mortality rate. Treatment costs average around $60,000. Until now, giving the right antibiotics right before the procedure was the […]

Obstructive Sleep Apnea Explained Clearly – Pathophysiology, Diagnosis, Treatment

well welcome to another MedCram lecture we could talk about obstructive sleep apnea and specifically we’re going to get into the pathophysiology the risk factors the diagnosis and the treatment for obstructive sleep apnea ok let’s talk a little bit about the pathophysiology thought the physiology is the basically how do things go wrong so what is obstructive […]

Atherosclerosis – part 1 | Circulatory system diseases | Health & Medicine | Khan Academy

So I wanted to talk to you a little bit about atherosclerosis. And I have already cheated a little bit, and I’ve started drawing. I wanted to make it a slightly nicer drawing, because I wanted to make sure that the important things, we can actually see them and that it’s pretty clear. So in the top left, […]