Premature Ventricular Contractions (PVCs), Animation

premature ventricular contractions PVCs are premature heartbeats originating in one of the lower chambers of the heart the ventricles PVCs can result from a variety of factors and conditions including consumption of alcohol caffeine tobacco or drugs certain medications physical exercise stress or anything that increases adrenaline levels certain electrolyte deficiencies and damaged cardiac tissue…

Drug delays diagnosis of type 1 diabetes

[music -thoughtful ] So the key finding is that the single 14 day course of treatment with teplizumab would delay the diagnosis of Type 1 diabetes. The delay in the trial was was actually two years. In other words the median time, or the time that half of the individuals in the placebo group developed…

Dr. Thon on When a Headache Might Be Serious

So a headache can sometimes be more serious when it presents with red flags. So if you never had a history of headaches and you are in your 50s or 60s and you start a new daily headache, for example, or if you had a history of migraines and now that headache has changed–instead of…

Capillary Exchange and Edema, Animation

The major purpose of the circulatory system is to bring oxygen and nutrients to body tissues and remove wastes. This exchange happens in the smallest blood vessels called the capillaries. The walls of capillaries consist of a single layer of endothelial cells. Substances move between the blood and surrounding tissue in several ways: – Diffusion…

Bringing Healthcare to the People

– In Africa, there are millions of people who live out of the reach of healthcare. One out of five children will not reach the age of five. They will die from malaria, pneumonia, conditions we know how to treat. – It does not have to be that way. – The traditional model for healthcare…

Pain-Killing Hunger and Superpowered Diabetic Fish

SciShow is supported by Skillshare. [INTRO ♪] Pain sucks. And if that wasn’t bad enough, the best painkillers we have tend to be incredibly addictive and can pose other dangers, too. So scientists are on the lookout for alternatives. And a new study in the journal Cell may have just found an unlikely ally in…