Intro to PT chapter 11 Flashcards
CVD
Number one cause of death\
647,000 deaths in US 2017
351 billion in costs
of more than 2.7 million people
who died in 2017
24% died of CVD
Estimated direct and indirect costs for 2014 & 2015 CVD
$350 billion for American adults
AHA statement
40.5% of population is projected to have CVD by 2030.
Direct medical costs of CVD
tripple by 2030
Indirect costs of CVD
60% increase by 2030.
US Adults with hypertension
46%
Percent of highschool smokers
15%
Coronary Heart Disease CHD
48% of all CVD deaths -
most common cause of death for CVD
Myocardial Infaction, MI
790,000 a year US.
Percutaneous Coronary Interventions per year
480,000
coronary artery bypass per year
371,000
Pacemakers per year
411,000
COPD
16 million people in US
4th leading cause of death.
COPD gender
Women twice as likely as men
COPD race
greatest prevelence in non-hispanic black or african american individuals
Anual cost of COPD
49 billion by 2020 – 32 billion in 2010
Pericardial sac
Fibbrous tissue that surrounds the heart.
Myocardium
Muscle tissue of the heart, cross striated with layers of muscle fibers arranged in multiple directions.
Superior and inferior vena cava
Right atrium recieves blood from here
Right ventricle
recieves blood from right atrium through tricuspid valve
Right Ventrical sends blood too
left and right pulminary arteries for oxigination. Must go through the pulminary valve ( right semilunar valve).
oxiginated bloods returns through pulminary veins.
And into left atrium.
From left atrium
blood flows through the mitral valve into the left ventrical
From the left ventrical
blood flows out the aortic vlave into the aorta and distributed throughout the body.
Nodal or Purkinje fibers
special types of tissue responsible for conducting the electrical impulses and sychronizing the heartbeat.
Sinoatrial (SA node)
Initiates the impulse (sinus rythm) - pacemaker
Atriventricular (AV) node
Transports this signal to bundle of His.
Bundle of His
where Purkinje fibers start to spread out into muscle fibers.
Two major arteries supplying blood to myocardium
left and right coronary arteries.
A blockage in a coronary artery
myocardial infarction
Arterioles another name
Resistence vessels
elasticity and smooth muscles can change diameter and resistence.
Arteriosclerosis
“hardening of the arteries” thick and stiff walls. Higher resistence to blood flow.
Capillaries
one cell thick “exchange vessels” Nutrients and wastes exchange here.
Viens hold a significant percentage of our blood supply
larger viens are called
capacitance vessels.
Respiration
exchange of oxygen and carbon dioxide between the air we breath and blood cells passing through lungs.
Ventilation
process of exchanging air between the atmosphere and the lungs through inspiration and expiration.
inspiration
diaphram contracts. - lungs expand
expiration
diaphram relaxes.
- lung volume decreases expelling air.
Nose, pharynx and larynx
Upper conducting airways. Cleans and humidifies air.
Terminates at begining of trachea.
Trachea and bronchiole system
System of tubes starting with trachea and branching out left and right with the bronchiole system into a many fine tubes.
end of conduction system
Alveoli - small sacks where oxygen and carbon dioxide are exchanged.
Alveolar ducts- the part right before the sac, can also have exchange
Pleura
membrane surround lungs.
Ischemia
inadequate oxygenation of tissues that occurs due to insufficient blood flow as a result of a blocked blood vessel.
Coronary Heart Desease
another word for arteriosclerosis
Angina
chest pain occurs from ischemia of the heart muscle.
Risk factors for CHD
- age
- family history
- cigarette smoking
- sedentary lifestyle
- obesity
- hypertension
- elevated cholesterol (LDL, total - HDL is fine)
- prediabetes.
HDL is a negative risk factor.
Heart failure
disease process or congenital defect causes a decrease in the pumping capability of the heart. Accute or gradual.
MI
accute change to pumping capability of heart
MI cause
embolus blocking a coronary artery
major complication of MI
abnormal heart rythm.
(abnormal conduction)-
inneficient heart contraction.
Congestive Heart Failure (CHF)
**Right ventricle isn’t contracting efficiently. **
* Blood volume backs up into venous system.
* fluid collects in abdomen liver and legs.
* abnormal amount of blood in lungs.
* Fluid collects in lungs.
* Even harder to push blood through lungs. so RV has to work harder.
* Blood doesn’t oxygenate as well.
Obstructive lung disease
pathologic changes lung cause abnormality in airflow through the bronchial tubes