Chapter 20 | Cardiac Emergencies Flashcards
• Aspects of acute coronary syndrome (ACS) • Conditions that may lead to a cardiac emergency
Define:
cardiac conduction system
system of specialized muscle tissue that conducts electrical impulses that stimulate the heart to the beat
Locate and define:
coronary arteries
major blood vessels which supply blood to the heart
Define:
artery
blood vessels carrying oxygenated blood from heart to body
Define:
vein
blood vessels carrying deoxygenated blood from body to heart
Locate and define:
vena cava
major blood vein carrying deoxygenated blood from body to heart
Locate and define:
aorta
main artery of body carrying oxygenated blood from heart to body
Locate and define:
pulmonary arteries
vessels which transport deoxygenated blood from heart to lungs (for oxygenation)
Locate and define:
pulmonary veins
blood vessels that carry oxygenated blood from lungs to heart
Define:
acute coronary syndrome (ACS)
(AKA “cardiac compromise”)
any time the heart may not be getting enough oxygen
Define:
ACS
(abbreviation)
acute coronary syndrome
List:
signs/symptoms of ACS
6 points (patient complaints and body response)
- chest pain (angina pectoris)
- dyspnea (shortness of breath)
- nausea or abdominal pain/discomfort
- sweating
- tachycardia (high HR)
- hypertension (high BP)
(ACS is acute coronary syndrome)
List:
patients who may have atypical presentation of ACS
3 points
- women
- diabetics
- elderly
Define:
EKG
(abbreviation)
electrocardiogram
(yeah the K is dumb)
Define:
electrocardiogram (EKG)
recording of heart’s electrical signal to check for abnormal heart conditions
Locate and define:
pulmonary valve
valve between between the heart’s right ventricle and pulmonary artery
Locate and define:
aortic valve
valve between the heart’s left ventricle and aorta
Some patients, such as [BLANK], [BLANK], and [BLANK], may experience atypical symptoms of ACS.
such as women, diabetics, and elderly
Define:
STEMI
(abbreviation)
ST segment elevation myocardial infarction
worst kind of heart attack
Define:
STEMI
(what it is)
when an artery supplying blood to the heart muscle suddenly becomes partially or completely blocked by a blood clot
(most serious type of heart attack)
List:
treatments for ACS
5 points
- position of comfort
- supplemental oxygen
- aspirin
- nitroglycerin
- rapid transport (to cardiac center)
Define:
coronary artery disease
conditions that narrow/block arteries of heart and deprive heart muscles (myocardium) of oxygen
Fill in the blank:
Coronary artery disease is often a result of [BLANK] on the inner walls of arteries.
(pathophysiology)
Coronary artery disease is often a result of fatty deposit build-up on the inner walls of arteries.
Define:
thrombus
blood clot on the inner surface of artery
Define:
embolus
flowing piece of blood clot that breaks loose and flows to smaller artery
Define:
occlusion
blockage of blood vessel
(causes emergency in majority of cardiac-related medical emergencies)
Define:
aneurysm
weakened section of blood vessels which begin to dilate (baloon)
(rupture can cause rapid, life-threatening internal bleeding)
List:
mechanical malfunctions of the heart
3 points
- angina pectoris
- acute myocadial infarction (AMI)
- congestive heart failure (CHF)
Define:
angina pectoris
temporary chest pain caused by insufficient blood flow to the myocardium
Fill in the blank:
Angina pectoris is typically caused by [BLANK].
Angina pectoris is typically caused by narrowed arteries.
so myocardium doesn’t get enough oxygen
Define:
AMI
(abbreviation)
acute myocardial infarction
Define:
myocardial infarction (MI)
death of a portion of myocardium due to lack of oxygen
(coronary artery is completely blocked)
Fill in the blank:
The underlying cause of AMI is typically [BLANK].
The underlying cause of AMI is typically coronary artery disease.
(AMI is acute myocardial infarction)
the myocardium is deprived of oxygen with coronary artery occlusion
prolonged deprivation of oxygen supply to the myocardium can lead to myocardial cell death and necrosis
Fill in the blank:
CHF often leads to [BLANK].
CHF often leads to excessive fluid build-up in the lungs or body (pulmonary edema).
(CHF is congestive heart failure)
List:
underlying conditions that increase risk of CHF
3 points
- diseased heart valves
- chronic hypertension
- obstructive pulmonary disease
heart not working right, too much pressure going in, or blockage on the way out
Fill in the blank:
CHF is often a complication of [BLANK].
CHF is often a complication of AMI.
CHF is congestive heart failure
AMI is acute myocardial infarction
Fill in the blank:
[BLANK] is often a complication of AMI.
CHF is often a complication of AMI.
CHF is congestive heart failure
AMI is acute myocardial infarction
List:
stages in progression of CHF
4 points
- patient sustains AMI
- myocardium of left ventricle dies
- blood backs up into pulmonary circulation and lungs
- (if untreated) left heart failure commonly causes right heart failure
True or false:
Angina pectoris is generally relieved by over-the-counter medications.
false