Chris Pratt: 'I have great respect for the animals that I kill'. The Jurassic World star on why he hunts, growing up âdirt poorâ and making the shift from comic shlub to blockbuster hero. Alex Godfrey. Saturday 6 June 2015 07.00 EDT Last modified on Tuesday 20 September 2016 10.12 EDT.
First Degree Heart Block Overview. What is a first degree heart block? A person with first degree heart block has a delay in the electrical impulse that travels through the heart. An electrical impulse stimulates the muscle fibers in the heart to contract. The impulse spreads through the heart in a very organized manner, so that the atria contract first, followed by the ventricles.
Some patients have an acquired heart block, meaning that they developed it at a point in their life, while others have a congenital heart block, meaning that they were born with it. A second degree heart block is characterized by a significant slowing of the electrical signals between the atria and ventricles. This results in blood not being pumped to the rest of the body due to not contracting when there is a blockage of the electrical signal before it reaches the ventricles. This degree of heart block has two types known as Mobitz type I and Mobitz type II.