Exam5 Ch 18 Disorders of Blood Flow & Blood Pressure Flashcards
(39 cards)
auditory examination of the heart
Auscultation
- turbulent blood flow @ high BP associated w/irregularities, constriction, or dilation of any structure blood flows thru
- most common cause is Rheumatic Fever
Murmurs
friction w/in pericardium caused by disruption of pericardial fluid
Rub
- chest pain during exertion, goes away after 5-10 mins of rest
- caused by Ischemia (loss of blood flow to tissues)
Angina
irregular rhythm based on RATE
- Wandering Pacemaker
- Nodal Premature
- Tachycardia
- Bradycardia
Arrhythmia
SA node does not cue rest of the heart the way it should
Wandering Pacemaker
premature beats generated by AV node
Nodal Premature
fast heartbeat more than 100/min
Tachycardia
slow heartbeat less than 60/min
Bradycardia
irregular rhythm based on FUNCTION
- Atrial Fibrillation
- Ventricular Fibrillation
- Myocardial Infarction/Ischemia
Dysrhythmia
flutter, no discernible P wave
Atrial Fibrillation
- total erratic electrical activity
- ventricle quivers but does not contract, no cardiac output
- fatal unless treated w/immediate defibrillation
Ventricular Fibrillation
chest pain/angina
Myocardial Infarction/Ischemia
- block norepinephrine & epinephrine from bind to beta receptors on nerves to reduce BP
- non-selective
Beta Blockers
decrease contractility, decrease heart rate, decrease conduction velocity
Calcium Antagonists
prevents renin from being released which prevents angiotension II from being produced and acting on heart to make it beat faster
ACE Inhibitors
- belongs to group of medicine called Nitrates
- helps prevents angina attacks, but only treats symptoms
- immediately causes vasodilation
Nitroglycerin
- P-R segment greater in duration than 0.2 seconds
- Bradycardia
- caused by fxnl suppression of AV conduction
1 Degree/Mobitz 1
- larger & larger duration btwn P-R segment until no QRS response
- caused by structural damage to conducting system
2 Degree/Mobitz 2
- independent atrial & ventricular rates
- end point of either Mobitz I or Mobitz II AV block
3 Degree/Complete AV block
- form of ateriosclerosis
- soft deposits of intra-arterial fat & fibrin that harden over time
Atherosclerosis
- abnormal localized dilation of a blood vessel
- cyanosis, clammy sweat, altered heart rate
Aneurysm
aneurysm bound by a complete vessel wall, blood remains w/in vascular compartment
True Aneurysm
- localized tear in inner wall of artery w/formation of an extravascular hematoma that causes vessel enlargement
- usually caused by trauma
False/Pseudo Aneurysm