FINAL EXAM OF EFFING EVERYTHING Flashcards
chain of infection:
pathogen reservoir portal of exit means of transport portal of entry susceptible host
3 ways to prevent infection
engineering controls
administrative controls
PPE
what is sinus rhythm
electrical activity when impulses originate in the SA node
what is dysrhythmias
abnormal electrical activity
can result from myocardial infarctions
what is infective endocarditis
inflammation of the inner tissues of the heart
what do valvular disorders do?
disrupt the blood flow through heart
what is stenosis
narrowing of blood vessels
what is regurgitation
insufficient closure - blood flows both ways
what are the 4 levels of an artery
1) endothelium
2) elastic tissue
3) circular smooth muscle
4) connective tissue with elastic fibers
define heart failure
inadequate pumping
decreased cardiac output, increased preload, increased afterload
ACUTE OR CHRONIC
4 chambers of the heart
2 atria - RECEIVING
2 ventricles - PUMPING
influences on blood pressure
afterload: pressure needed to eject the blood
preload: amount of blood returning
what does the lymphatic system do:
works to return excess interstitial fluid to the circulation
what does the lymphatic system include:
lymph nodes
spleen
thymus
tonsils
what is blood pressure
force that exerts on the walls of blood vessels
it reflects how hard the heart is working
SYSTOLIC- cardiac WORK phase
DIASTOLIC- cardiac REST phase
define conduction pathway
impulses are delayed in the AV node to allow for complete ventricular filling
define conduction system
organizes electrical impulses in the cardiac cells and involves:
excitability
conductivity
automaticity
what is excitability
ability of the cells to respond to electrical impulses
what is conductivity
ability of cells to conduct electrical impulses
what is automaticity
ability to generate an impulse to contract with no external nerve stimulus
3 types of heart failure
systolic dysfunction
diastolic dysfunction
mixed dysfunction
4 tx for IBD
medication for symptoms
medication for disease
ongoing monitoring
diet & nutrition
5 areas of the abdomen that are prone to hernias
esophogeal hiatus umbilical ring inguinal canal femoral canal incision