CVT 105: FINAL EXAM (1-3) 130 QUESTIONS WITH
COMPLETE SOLUTIONS.
When it comes to the ANS, the [____] division prepares our body to function
under stress (flight or flight_ and the [____] division conserves and restores
body resources (rest and digest). Answer - Sympathetic, Parasympathetic
Sinus arrhythmia is a dysrhythmia originating in the AV Node and occurs when
the AV Node discharges irregularly. [T or F] Answer - False
Beta 2 receptors affect the heart and Beat 2 Receptors affect the lungs. [T or F]
Answer - True
What are some signs and symptoms of decreased CO.
-Acute Drop in BP
-Acute Changes in Mental Status
-Dysrhythmias
-Dyspnea
-Chest Tightness
-Fatigue
-Fever Answer - -Acute Drop in BP
-Acute Changes in Mental Status
-Dysrhythmias
-Dyspnea
,-Fatigue
A patient has a SV of 80 ml/beat and a HR of 70 bpm. What is his CO and is
considered normal, increased or decreased?
-Increased CO
-Decreased CO
-Normal CO
-5.6 ml/min
-5.6 L/beat Answer - -Normal CO
-5.6 L/min
Properties of Cardiac Cells:
-Ability of cardiac cell to shorten, causing contraction of the cardiac muscle in
response to electrical stimuli
-Ability of cardiac pacemaker cells to spontaneously initiate an electrical
impulse
-Ability of cardiac cells to respond to a stimulus
-Ability of a cardiac cell to receive an electrical stimulus & conduct that impulse
to an adjacent cell Answer - -Contractility
-Automaticity
-Excitability
-Conductivity
Explain the Chronotropic, Inotropic, and dromotropic effects as they pertain to
the heart. Answer - -Chronotropic: effects the heart rate, positive increases,
negative decreases
-Inotropic: Effects the contractility, positive increases, negative decreases
, -Dromotropic: Effects the conduction velocity, positive increases, negative
decreases
What is depolarization? Answer - The cause of contraction by a shift in
electrical charges in pacemaker cells
List in order the 5 steps used in ECG rhythm analysis Answer - 1. Assess the
rhythm, irregular or regular
2. Assess the rate
3. Identify & examine waveforms
4. Assess PR Interval, QRS Duration, interpret ST Segment
5. Interpret waveform and assess clinical significance
EKG deflections that record below the isoelectric line are positive deflections.
They demonstrate that most electrical depolarization is occurring in the
direction of that particular EKG Lead. Deflections recorded above the
isoelectric line are negative deflections. [T or F] Answer - False
What is the isoelectric line of an EKG defined as? Answer - It is defined as the
baseline of the EKG
What is the order of electrical impulses as it travels around the heart?
1.
2.
3.
4.
5.
6. Answer - 1. SA Node
COMPLETE SOLUTIONS.
When it comes to the ANS, the [____] division prepares our body to function
under stress (flight or flight_ and the [____] division conserves and restores
body resources (rest and digest). Answer - Sympathetic, Parasympathetic
Sinus arrhythmia is a dysrhythmia originating in the AV Node and occurs when
the AV Node discharges irregularly. [T or F] Answer - False
Beta 2 receptors affect the heart and Beat 2 Receptors affect the lungs. [T or F]
Answer - True
What are some signs and symptoms of decreased CO.
-Acute Drop in BP
-Acute Changes in Mental Status
-Dysrhythmias
-Dyspnea
-Chest Tightness
-Fatigue
-Fever Answer - -Acute Drop in BP
-Acute Changes in Mental Status
-Dysrhythmias
-Dyspnea
,-Fatigue
A patient has a SV of 80 ml/beat and a HR of 70 bpm. What is his CO and is
considered normal, increased or decreased?
-Increased CO
-Decreased CO
-Normal CO
-5.6 ml/min
-5.6 L/beat Answer - -Normal CO
-5.6 L/min
Properties of Cardiac Cells:
-Ability of cardiac cell to shorten, causing contraction of the cardiac muscle in
response to electrical stimuli
-Ability of cardiac pacemaker cells to spontaneously initiate an electrical
impulse
-Ability of cardiac cells to respond to a stimulus
-Ability of a cardiac cell to receive an electrical stimulus & conduct that impulse
to an adjacent cell Answer - -Contractility
-Automaticity
-Excitability
-Conductivity
Explain the Chronotropic, Inotropic, and dromotropic effects as they pertain to
the heart. Answer - -Chronotropic: effects the heart rate, positive increases,
negative decreases
-Inotropic: Effects the contractility, positive increases, negative decreases
, -Dromotropic: Effects the conduction velocity, positive increases, negative
decreases
What is depolarization? Answer - The cause of contraction by a shift in
electrical charges in pacemaker cells
List in order the 5 steps used in ECG rhythm analysis Answer - 1. Assess the
rhythm, irregular or regular
2. Assess the rate
3. Identify & examine waveforms
4. Assess PR Interval, QRS Duration, interpret ST Segment
5. Interpret waveform and assess clinical significance
EKG deflections that record below the isoelectric line are positive deflections.
They demonstrate that most electrical depolarization is occurring in the
direction of that particular EKG Lead. Deflections recorded above the
isoelectric line are negative deflections. [T or F] Answer - False
What is the isoelectric line of an EKG defined as? Answer - It is defined as the
baseline of the EKG
What is the order of electrical impulses as it travels around the heart?
1.
2.
3.
4.
5.
6. Answer - 1. SA Node
