Test 2- Cardiac/GI/Hematological Flashcards
Normal BP: ___-___ mm Hg (systolic)
___-___mm Hg (diastolic)
100-120 mm Hg
60-80 mm Hg
Do NOT begin exercise if SBP < __ or > ___
or if DBP > ___
No exercise if SBP <60 or > 200
Or if DBP >110
Normal BP response during activity:
SBP INCREASES __ mm Hg per MET, DBP ___ change or slight ____.
SBP increases 10 mm Hg per MET
DBP no change or slight decrease
*Stop exercise if drop in SBP or if no increase in SBP with workload or SBP >200
Or if DBP rises above 110 mm Hg (Abnormal responses during activity)
Normal Resting Heart Rate:
__-__ bpm
Bradycardia: < __ bpm
Tachycardia: > ___ bpm
60-100
<60 (Brady)
> 100 (Tachy)
Resting RR: __-___ br/min
- May INCREASE __-__ br/min during ex in healthy adult
- Resting RR > ___ : DO NOT start exercise
- Resting RR __-__ br/min : Use caution
12-20 br/min
May increase 50-69 br/min during ex
> 45 DO NOT EXERCISE
35-45 br/min USE CAUTION
SpO2: __-__%
*
90-100%
<90% acutely ill pt, STOP EX
<85% w chronic lung dz, STOP EX
The cardiovascular system consists of the ___, ____, ____, ____, and ____.
Heart, arteries, capillaries, veins, and lymphatics
The functions of the heart are to:
2
Pump oxygenated blood into the arterial system, which carries it to the cells
Collect deoxygenated blood from the venous system and deliver it to the lungs
The heart is located in the middle of the ______.
It beats approximately ___ times per minute and pumps more than __ liters of blood per minute
Mediastinum
72 times per minute
5 L of blood per minute
What is the two layered sac that encloses the heart called?
Pericardium
What is the purpose of pericardial fluid?
To reduce the friction produced by the pumping action of the heart and cushion the heart against external trauma
There are three layers of cardiac tissue:
___ outer- (same structure as visceral pericardium)
___ middle- (contracting mm of heart)
___ inner- (consists of endothelial tissue)
Epicardium
Myocardium
Endocardium
What arteries are the blood vessels which nourish the heart with oxygen and nutrients? Where do these arteries lie?
Coronary arteries;
they lie on the surface of the heart and arise from the aorta
Diastolic BP must be at least ___ mm Hg to enable adequate blood flow through coronary arteries
60 mm Hg
The conduction system asked to spread the action potential initiated in one area of the myocardium throughout the whole heart. The spread of the action potential stimulates the contraction of the chambers of the heart. The conduction system consists of ___ node, ___ node, ___ ___ ___, and ____ ____.
SA (Sinoatrial) node
AV (atrioventricular) node
Bundle of HIS
Purkinje’s fibers
Heart rate controlled by the _____ nervous system
Autonomic
Def: Often referred to as the pacemaker of the heart; initiates each heartbeat and consists of two types of specialized cells, P and T cells.
__ cells initiate electrical impulses
__ cells transmit impulses
SA node
P cells initiate
T cells transmit
Located in the lower aspect of the atrial septum; receives electrical impulses from the SA node
AV node
What fuses with the AV node to form another pacemaker site, meaning that if the SA node fails this will sustain a heart rate of 40 to 60 bpm?
Bundle of HIS
These are conducting strands on the endocardial surface, penetrating the myocardium of both ventricles. They spread the wave of depolarization.
Purkinje fibers
Def: The atherosclerosis affecting the arterial circulation
Cardiovascular disease
Def: The atherosclerosis (plaque formation) specifically affecting the coronary arteries (Includes angina pectoris, MI, silent myocardial ischemia and sudden cardiac death)
Coronary Artery Disease (CAD) or Coronary Heart Disease (CHD)
(Description of a disease)
When the coronary arteries become narrowed and blocked, the area of the heart that they supply becomes ischemic and injured, and an infarction may result.
Coronary artery disease
**remember that ischemia is the underlying issue that leads to infarction
Def: Irreversible tissue damage due to the lack of oxygen
Infarction