CVT 105: FINAL EXAM (1-3) questions
and answers rated
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). -
correct answer ✔✔ Sympathetic, Parasympathetic
Sinus arrhythmia is a dysrhythmia originating in the AV Node and occurs when the AV Node
discharges irregularly. [T or F] - correct answer ✔✔ False
Beta 2 receptors affect the heart and Beat 2 Receptors affect the lungs. [T or F] - correct 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 - correct 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 - correct 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 - correct answer ✔✔ -Contractility
-Automaticity
-Excitability
-Conductivity
Explain the Chronotropic, Inotropic, and dromotropic effects as they pertain to the heart. -
correct 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? - correct 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 - correct 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] - correct answer
✔✔ False
What is the isoelectric line of an EKG defined as? - correct 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. - correct answer ✔✔ 1. SA Node
2. Internodal Pathways
3. AV Node
4. Bundle of HIS
5. L & R Bundle Branches
6. Purkinje Fiber Network
and answers rated
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). -
correct answer ✔✔ Sympathetic, Parasympathetic
Sinus arrhythmia is a dysrhythmia originating in the AV Node and occurs when the AV Node
discharges irregularly. [T or F] - correct answer ✔✔ False
Beta 2 receptors affect the heart and Beat 2 Receptors affect the lungs. [T or F] - correct 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 - correct 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 - correct 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 - correct answer ✔✔ -Contractility
-Automaticity
-Excitability
-Conductivity
Explain the Chronotropic, Inotropic, and dromotropic effects as they pertain to the heart. -
correct 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? - correct 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 - correct 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] - correct answer
✔✔ False
What is the isoelectric line of an EKG defined as? - correct 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. - correct answer ✔✔ 1. SA Node
2. Internodal Pathways
3. AV Node
4. Bundle of HIS
5. L & R Bundle Branches
6. Purkinje Fiber Network
