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Patho > Cardiac- Dysrhythmia, hypertensio, restrictive disease, blood flow > Flashcards

Cardiac- Dysrhythmia, hypertensio, restrictive disease, blood flow Flashcards

1
Q

P Wave

A

Atrial contraction

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2
Q

QRS complex

A

Ventricle contraction

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3
Q

T wave

A

Ventricle relaxation

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4
Q

SA Node

A

Pacemaker of heart, creates Sinus rhythm

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5
Q

Electrical Impulse

A 
SA Node
Atrial conduction pathway
AV Node 
*slight delay*
AV bundle
Left and Right bundle branches 
Purkinje Fibers
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6
Q

Lethal Dysrhythmia

A

Ventricular Tachycardia

V-Fib

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7
Q

AV block

A

1st degree- delayed PR
2nd degree- missed ventricular contraction
Total- no transmission from atria leading to decreased CO

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8
Q

Sympathetic Nervous System Hormones & their effects

A

Epinephrine and Norepinephrine

Increase heart rate
Increase BP
Increase Cardiac Output

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9
Q

Hypertension Risk Factors

A

Gender ethnicity familial tendency

Excessive alcohol intake
Increased Sodium Intake
Obesity
Recurrent stress

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10
Q

Process of hypertension

A

Increased arteriolar vasoconstriction leads to decreased blood flow to kidneys, activation of RAAS to increase blood pressure…trying to push blood through narrow spaces

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11
Q

Long term effects of hypertension

A 
CHF
sclerotic blood vessel
Chronic renal failure
Stroke/hemorrhage 
Pat atheists, ataxia 
Necrosis of tissue
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12
Q

Parasympathetic Nervous System Effects on heart

A

Decrease HR
Decrease BP
Vagal Nerve stimulation

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13
Q

Pericardial Tamponade

A

Excess fluid in pericardium restricting the movement of the heart muscle making it difficult to contract

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14
Q

Pericarditis

A

Inflammatory response, resulting in weak and irregular contractions

causes irritation, friction and chest pain

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15
Q

Factors that affect resistance in blood vessels

A

Viscosity
Length of vessel
Diameter of vessel

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16
Q

RAAS

A

Decreased blood flow to kidney
Release of renin
Angiotensin activation (vasoconstriction)
Aldosterone and ADH secretion

Increase blood pressure

17
Q

Aldosterone effects

A

Sodium ion retention, water retention

18
Q

ADH

A

Water Retention

19
Q

Blood flow through heart

A 
Inferior/superior vena cava 
Right atria
Tricuspid valve
Right ventricle
Pulmonary SL Valve
Pulmonary Artery 
Lungs
Pulmonary vein 
Left atria 
Mitral (bicuspid) valve 
Left ventricle 
Aortic SL 
Aorta

Patho (5 decks)

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