MDC 3 Final || with Accurate Answers 100%.
Cardiac output correct answers amount of blood pumped by the heart in one minute
Heart rate correct answers umber of times the ventricles contract each minute
Stroke volume correct answers Amount of blood ejected by the left ventricle during each
contraction
How is cardiac output calculated? correct answers Multiple the stroke volume by the heart rate
Purpose of the vascular system correct answers - provides a route for blood to travel from the
heart to nourish the various tissues of the body
- carries cellular wastes to the excretory organs
- allows lymphatic flow to drain tissue fluid back into the circulation
- returns blood to the heart for recirculation
Purpose of arterial system correct answers delivers oxygen and nutrients to various body tissues
Purpose of venous system correct answers primary function is to complete circulation of blood
by returning blood from capillaries to the right side of the heart
Sinoatrial Node (SA Node) correct answers - electrical impulses 60-100 beats/min
- P wave on ECG
Atrioventricular junction (AV) correct answers - PR segment on ECG
- Contraction known as "atrial kick"
Bundle of His correct answers Right and left bundle branches
Normal Sinus Rhythm (NSR) correct answers - Rate: 60-100
- Rhythm: Atrial and ventricular rhythms regular
- P waves: Present, consistent configuration, one P wave before each QRS complex
- PR Interval: 0.12-0.20 seconds and constant
- QRS duration: 0.06-0.10 seconds and constant
Sinus Arrhythmia correct answers - Variant of NSR; results from changes in intrathoracic
pressure during breathing
- Rate: Atrial and ventricular rates between 60-100 beats/min
- Rhythm: Atrial and ventricular rhythm irregular, with the shortest PP or RR interval varying at
least 0.12 seconds from the longest PP or RR interval
- P waves: One P wave before each QRS complex; consistent configuration
- PR Interval: Normal, constant
- QRS duration: Normal, Constant
Pacemakers correct answers - Temporary pacing: transcutaneous and transvenous
, - Permanent
- electronic devices that help the heart beat
Premature atrial complexes correct answers - Ectopic focus of atrial tissue fires an impulse
before next sinus impulse is due
- caused by stress, fatigue, anxiety, inflammation, infection, caffeine, nicotine, alcohol, or certain
drugs
Supraventricular tachycardia (SVT) correct answers - rapid stimulation of atrial tissue occurs at
rate of 100-280 beat/min
- often occurs in healthy young people, especially women
Atrial Fibrillation correct answers - Chaotic rhythm
- No clear P waves, no atrial contractions, loss of atrial kick, and irregular ventricular response
- most common dysrhythmia
Atrial Fibrillation Assessment correct answers - risk factors: HTN, previous ischemic stroke,
TIA or other thromboembolic event
- apical pulse may be irregular
- symptoms depend on ventricular rate
- poor perfusion
- some may be asymptomatic
- anxiety
- ECG
Atrial Fibrillation potential complications correct answers - potential for embolus formation due
to irregular cardiac rhythm
- potential for heart failure due to altered conduction pattern
Ventricular tachycardia (V tach) correct answers - Repetitive firing of irritable ventricular
ectopic focus, usually at 140-180 beats/min or more
Ventricular Fibrillation (V fib) correct answers - result of electrical chaos in ventricles
- LIFE THREATENING
Ventricular Asystole (ventricular standstill) correct answers Complete absence of any ventricular
rhythm
Cardiopulmonary Resuscitation and Defibrillation correct answers - CPR
- Advanced cardiac life support
Defibrillation correct answers - asynchronous counter-shock that depolarizes a critical mass of
myocardium simultaneously to stop the re-entry circuit, allowing the sinus node to regain control
of heart
Cardiac output correct answers amount of blood pumped by the heart in one minute
Heart rate correct answers umber of times the ventricles contract each minute
Stroke volume correct answers Amount of blood ejected by the left ventricle during each
contraction
How is cardiac output calculated? correct answers Multiple the stroke volume by the heart rate
Purpose of the vascular system correct answers - provides a route for blood to travel from the
heart to nourish the various tissues of the body
- carries cellular wastes to the excretory organs
- allows lymphatic flow to drain tissue fluid back into the circulation
- returns blood to the heart for recirculation
Purpose of arterial system correct answers delivers oxygen and nutrients to various body tissues
Purpose of venous system correct answers primary function is to complete circulation of blood
by returning blood from capillaries to the right side of the heart
Sinoatrial Node (SA Node) correct answers - electrical impulses 60-100 beats/min
- P wave on ECG
Atrioventricular junction (AV) correct answers - PR segment on ECG
- Contraction known as "atrial kick"
Bundle of His correct answers Right and left bundle branches
Normal Sinus Rhythm (NSR) correct answers - Rate: 60-100
- Rhythm: Atrial and ventricular rhythms regular
- P waves: Present, consistent configuration, one P wave before each QRS complex
- PR Interval: 0.12-0.20 seconds and constant
- QRS duration: 0.06-0.10 seconds and constant
Sinus Arrhythmia correct answers - Variant of NSR; results from changes in intrathoracic
pressure during breathing
- Rate: Atrial and ventricular rates between 60-100 beats/min
- Rhythm: Atrial and ventricular rhythm irregular, with the shortest PP or RR interval varying at
least 0.12 seconds from the longest PP or RR interval
- P waves: One P wave before each QRS complex; consistent configuration
- PR Interval: Normal, constant
- QRS duration: Normal, Constant
Pacemakers correct answers - Temporary pacing: transcutaneous and transvenous
, - Permanent
- electronic devices that help the heart beat
Premature atrial complexes correct answers - Ectopic focus of atrial tissue fires an impulse
before next sinus impulse is due
- caused by stress, fatigue, anxiety, inflammation, infection, caffeine, nicotine, alcohol, or certain
drugs
Supraventricular tachycardia (SVT) correct answers - rapid stimulation of atrial tissue occurs at
rate of 100-280 beat/min
- often occurs in healthy young people, especially women
Atrial Fibrillation correct answers - Chaotic rhythm
- No clear P waves, no atrial contractions, loss of atrial kick, and irregular ventricular response
- most common dysrhythmia
Atrial Fibrillation Assessment correct answers - risk factors: HTN, previous ischemic stroke,
TIA or other thromboembolic event
- apical pulse may be irregular
- symptoms depend on ventricular rate
- poor perfusion
- some may be asymptomatic
- anxiety
- ECG
Atrial Fibrillation potential complications correct answers - potential for embolus formation due
to irregular cardiac rhythm
- potential for heart failure due to altered conduction pattern
Ventricular tachycardia (V tach) correct answers - Repetitive firing of irritable ventricular
ectopic focus, usually at 140-180 beats/min or more
Ventricular Fibrillation (V fib) correct answers - result of electrical chaos in ventricles
- LIFE THREATENING
Ventricular Asystole (ventricular standstill) correct answers Complete absence of any ventricular
rhythm
Cardiopulmonary Resuscitation and Defibrillation correct answers - CPR
- Advanced cardiac life support
Defibrillation correct answers - asynchronous counter-shock that depolarizes a critical mass of
myocardium simultaneously to stop the re-entry circuit, allowing the sinus node to regain control
of heart
