Lab 7 Flashcards
what is Bundle Branch Block?
when the bundle branch is blocked so the pathway that is taken to stimulate the ventricular masss is outside the normal condition causing a delay in the ability to stimulate the ventricular side
What will you use to diagnose a Bundle Branch Block?
the chest leads
Causes of bothb bundle branch blockes
congential heart disease, cardiomyopathy hypertension
what can cause a right bundle branch block?
chronic obstructive pulmonary disease, pulmonary embolism, pulmonary hypertension (lung disease)
What are the normal deflection patterns of the chest leads?
V1 and V2 downward
V6 and v5 exclusinvely positive
What happens is a right bundle branch block?
stimulus of the left ventircle occurs normally creating a small R wave and but due to the delay in stimulation of the right ventricle there is a second R wave that represents the stimulation of the right ventrical rR’
What leads do you check for RBBB?
v1 and or v2
What happens in a Left Bundle Branch Block?
normally stimulus of the right ventricle occurs creating an R wave but delay in the stimulation of the left ventricle creating a second R wave RR’
- R waves can slur into each other creating a wide QRS complex
What leads do you check for LBBB?
V5 and or V6
What is another name for the AV valves?
parachute Valves
What are the AV valves of the heart?
tricuspid and bicuspid
What are the semilunar valves?
pulmonary and aortic
What is anither name for the semilunar valves?
hip-pocket valves
What is hypertrophy?
an increase in mass attributable to increases in cell size (not number)
- has same exact meaning as the term enlargements
What is the Frank-Starling Law of the Heart?
as larger volume of blood flows into a heart chamber, the blood stretches the cardiac muscle fibers, leading to an increase in the force of contraction
