Physiology: Exam 2 Quizzes

Name the correct placement of V2: a.) 4th left intercostal space b.) 4th right intercostal space c.) 5th left intercostal space d.) 5th right intercostal space

a.) 4th left intercostal space

Which of the following statements regarding arrhythmias are correct? (Mark all that apply) a.) First degree heart block gives rise to an abnormally long PR interval. b.) Third degree heart block is indicated by an abnormally long QRS complex following the P wave c.) An ECG with a sawtooth pattern on the baseline indicates atrial fibrillation. d.) In second degree heart block some P waves are not followed by a QRS complex.

a.) First degree heart block gives rise to an abnormally long PR interval. d.) In second degree heart block some P waves are not followed by a QRS complex.

In which lead is the P wave best seen? a.) II b.) III c.) AvF d.) V1

a.) II

If you see a patient with a positive QRS in lead I, and a negative QRS in lead aVF, what sort of axis do they have? a.) LAD b.) RAD c.) Normal axis d.) Extreme right axis deviation

a.) LAD

If you see a patient with a positive QRS in lead I, and a negative QRS in lead aVF, what sort of axis do they have? a.) LAD b.) RAD c.) Normal axis d.) extreme right axis deviation

a.) LAD

What portion of the EKG represents the duration of ventricular systole? a.) QT interval b.) PR segment c.) QRS complex d.) ST segment

a.) QT interval

Lead I, Lead II, and Lead III are bipolar limb leads that show the electrical activity of the heart in the frontal plane. a.) True b.) False

a.) True

A patient is noted to have an abnormally shortened PR-interval on their ECG. Which of the following is the most likely cause? a.) Wolf Parkinson White Syndrome b.) Right bundle branch block c.) Left bundle branch block d.) AV nodal fibrosis

a.) Wolf Parkinson White Syndrome

What would the mean cardiac axis be if a person has a big positive deflection on Lead I and a small positive deflection on Lead II? a.) between 0 and 30 degrees b.) 0 degress c.) between 30 and 60 degrees d.) 30 degrees

a.) between 0 and 30 degrees

Which disorder is associated with an ECG with an abnormally broad QRS complex following a P wave? a.) atrial fibrillation b.) atrial flutter c.) first degree heart block d.) second degree heart block e.) third degree heart block f.) bundle branch block

f.) bundle branch block

What is the correct placement of V1? a.) 5th right intercostal space b.) V2 c.) 4th right intercostal space d.) 4th left intercostal space

c.) 4th right intercostal space

What is another name for an automaticity focus that escapes overdrive suppression to pace at its inherent rate? a.) Abberant rhythm b.) Idiopathic beat c.) Escape rhythm d.) Escape beat

c.) Escape rhythm

What is an arrhythmia? a.) Accelerated heart beat. b.) Slow heart beat. c.) Irregular heart beat. d.) A type of heart cancer

c.) Irregular heart beat.

What is the best lead for determining RAD? a.) Lead II b.) Lead III c.) Lead I d.) Lead aVF e.) None of the above

c.) Lead I

What is the best lead for determining RAD? a.) Lead II b.) Lead III c.) Lead I d.) Lead aVF e.) none of the above

c.) Lead I

Which disorder is associated with an ECG with an only prolonged P-R interval? a.) atrial fibrillation b.) atrial flutter c.) first degree heart block d.) second degree heart block e.) third degree heart block f.) bundle branch block

c.) first degree heart block

What does ST-elevation suggest? a.) bundle branch block b.) heart block - mobitz type II c.) myocardial infarction d.) heart murmur

c.) myocardial infarction

If a rhythm is described as sinus, what does this indicate? a.) QRS-complexes are present b.) P-waves are present c.) A QRS-complex precedes each T-wave d.) A P-wave precedes each QRS-complex

d.) A P-wave precedes each QRS-complex

What view of the heart do leads V3 & V4 represent? a.) Lateral b.) Superior c.) Inferior d.) Septal

d.) Septal

What wave represents ventricular repolarization? a.) U wave b.) P wave c.) Q wave d.) T wave

d.) T wave

Regarding the QRS complex: In which lead(s) would you see a TALL R wave? a.) V5 b.) V6 c.) V1, V2 d.) V5, V6

d.) V5, V6

What does the Parasympathetic system do to the heart, and which neurotransmitter is associated with it? a.) decreases the heart rate and contractility (norepinephrine) b.) increases the heart rare and contractility (epinephrine) c.) decreases the heart rate and contractility (acetylcholine) d.) decreases the heart rate (acetylcholine)

d.) decreases the heart rate (acetylcholine)

The positive electrode of Lead III is placed on the _____ and is at the _____ angle. a.) left wrist, 120 b.) right wrist, -120 c.) left wrist, --60 d.) left foot, 120

d.) left foot, 120

What is the location of V6? a.) 4th left intercostal space b.) 4th right intercostal space c.) 5th intercostal space, anterior axillary line d.) 5th intercostal space midclavicular line e.) 5th intercostal space midaxillary line

e.) 5th intercostal space midaxillary line

Which disorder is associated with an ECG with an abnormally broad QRS complex not associated with any P waves and a heart rate of below 40? a.) atrial fibrillation b.) atrial flutter c.) first degree heart block d.) second degree heart block e.) third degree heart block f.) bundle branch block

Not D

Which disorder is associated with an ECG with a sawtooth pattern on the baseline? a.) atrial fibrillation b.) atrial flutter c.) first degree heart block d.) second degree heart block e.) third degree heart block f.) bundle branch block

atrial flutter

The rate of Paroxysmal tachycardia is typically: a.) 350 +bpm b.) 150 - 250 bpm c.) 150 - 350 bpm d.) 250 - 350 bpm e.) 60 - 100 bpm

b.) 150 - 250 bpm

Mr. Wilson's ECG shows a biphasic deflection on Lead I and a positive deflection on aVF. What is his mean electrical axis? a.) 0 degrees b.) 90 degrees c.) - 90 degrees d.) -180 degrees

b.) 90 degrees

Mr. Wilson's ECG shows a biphasic deflection on Lead I and a positive deflection on aVF. What is his mean electrical axis? a.) 0 degrees b.) 90 degrees c.) - 90 degrees d.) - 180 degrees

b.) 90 degrees

Irregular heartbeat of abnormal heart rhythm refers to? a.) Discardia b.) Arrhythmia c.) Atrial asynchrony d.) Heart burn e.) Myocarditis

b.) Arrhythmia

Irregular heartbeat of abnormal heart rhythm refers to? a.) Discardia b.) Arrhythmia c.) Atrial asynchrony d.) Heart burn e.) Myocarditis

b.) Arrhythmia

What would it suggest if lead I became negative and lead III became more positive than lead II? a.) Left axis deviation (LAD) b.) Right axis deviation (RAD)

b.) Right axis deviation (RAD)

Which of the following is never found on physical examination in a patient with atrial fibrillation? a.) S3 heart sound b.) S4 heart sound c.) Fixed split S2 heart sound d.) Paradoxically split S2 heart sound e.) Early diastolic murmur of mitral stenosis

b.) S4 heart sound

The duration of the PR interval is noted to be increasingly prolonged. In addition QRS complexes appear to be dropped at consistent intervals. What diagnosis would this suggest. a.) Third degree -Heart Block b.) Second degree - Mobitz Type 1 - Heart Block c.) Hyperkalaemia d.) First degree Heart Block

b.) Second degree - Mobitz Type 1 - Heart Block

What would you most likely see in Left Ventricular Hypertrophy? a.) A wide QRS (increased duration) b.) A taller QRS (more mV) c.) Right axis deviation (RAD) d.) A wide QRS (increased duration), a taller QRS (more mV) and Left axis deviation (LAD) e.) All of the above

not a

What would you typically see on EKG if a patient had Bundle Branch Block a.) Wide QRS b.) Narrow QRS c.) long PR interval d.) wide QRS and R, R'

not a