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TRUSTED TEST SOLUTIONS!
Atrioventricular Nodal Reentrant Tachycardia Answer: Sudden onset and termination
- Regular, narrow QRS
- Look for inverted Pw after QRS
- Most common paroxysmal SVT
Most common paroxysmal SVT Answer: Atrioventricular Nodal Reentrant Tachycardia
Inverted Pw after QRS is seen in? Answer: Atrioventricular Nodal Reentrant
Tachycardia
Sudden onset and termination
- Regular, narrow QRS
- Look for inverted Pw after QRS
- Most common paroxysmal SVT Answer: Atrioventricular Nodal Reentrant Tachycardia
30 yo woman with four-year h/o sudden rapid heart racing lasting 5 min to 2 hours.
Longer episodes occur 2-3 times per year, but shorter episodes occur 1-2 times per
week. She feels the palpitations in her throat and chest. Heart rate to 170s. Often
occurs after stooping over. Answer: Atrioventricular Nodal Reentrant Tachycardia
30 yo man with four-year h/o sudden rapid heart racing lasting
several minutes and associated with dyspnea and lightheadedness.
- Two hours ago he experienced sudden onset of a more severe
episode with irregular and brief extremely rapid flutter sensation and
near syncope.
- Irregularly irregular rhythm on exam. Answer: Atrial fibrillation
Which of the following is the best treatment for Atrial fibrillation?
A. Adenosine
B. Digoxin
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,C. Metprolol
D. Procainamide
E. Amiodarone Answer: D. Procainamide
- Don't want to give drugs that act on just AV node
Patient does not have a pulse and has the following EKG: Answer: Pulseless electrical
activity
Pulseless electrical activity Answer: A condition in which the heart's electrical rhythm
remains relatively normal, yet the mechanical pumping activity fails to follow the
electrical activity, causing cardiac arrest
18 yo student presented to his primary physician feeling jittery with
frequent "missed beats" and intermittent racing heart. No CP or SOB.
No significant past medical history. No medications. Denied alcohol,
tobacco and drug use.
• Anxious, but otherwise healthy appearing. Slow pulse rate. Then
sudden racing beats.
EKG shows narrow QRS waves and bigemeny Answer: Premature atrial contractions
Premature atrial contractions Answer: A premature contraction that results when the
atria are triggered to contract earlier than they should
- Narrow QRS
Premature atrial contractions have [wide/narrow] QRS Answer: Narrow QRS
Premature ventricular contractions Answer: Premature contractions in the ventricles
- Wide QRS
Premature ventricular contractions have [wide/narrow] QRS Answer: Narrow QRS
Bigeminy Answer: PVC/PAC every other beat
PVC/PAC every other beat Answer: Bigeminy
Couplets EKG Answer: Two consecutive PACs/PVCs that appear on an
electrocardiogram
Two consecutive PACs/PVCs that appear on an electrocardiogram Answer: Couplets
Are premature atrial contractions typically:
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,A. Dangerous
B. Not Dangerous Answer: B. Not Dangerous
Sinus Arrhythmia Answer: A sinus rhythm in which the rate varies with respiration,
causing an irregular rhythm
- Normal finding, no treatment necessary
A sinus rhythm in which the rate varies with respiration, causing an irregular rhythm
- Normal finding, no treatment necessary Answer: Sinus Arrhythmia
Breathing effect on heart rate in
Sinus Arrhythmia Answer: During inspiration, the vagus nerve stimulates the heart,
slowing down the heart rate. During expiration, the vagus nerve activity decreases,
allowing the heart rate to increase.
Sinus arrhythmia inspiration Answer: Heart rate decreases
Sinus arrhythmia expiration Answer: Heart rate increases
21 yo Campbell University Lacrosse player collapsed on the field during practice.
- She suffered a syncopal episode last summer while swimming at the pool.
- No other known past medical history.
- Father and an uncle died suddenly before 40. Answer: Long QT Syndrome
Long QT Syndrome short-term intervention Answer: Cardioversion
Long QT Syndrome long-term intervention Answer: After cardioversion, look for the
underlying cause of long-QT
Left Bundle Branch Block Answer: A Q wave is seen instead of an R wave in MCL1
Inferior infarction EKG Answer: ST elevations seen in Leads II, III, and aVF
- Right coronary artery
Anterior infarction EKG Answer: ST elevations seen in Leads V1, V2, V3, V4
- LAD artery
ST elevations seen in Leads II, III, and aVF Answer: Inferior infarction
- Right coronary artery
ST elevations seen in Leads V1, V2, V3, V4 Answer: Anterior infarction
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, - LAD artery
Lateral infarction EKG Answer: ST elevations seen in Leads V5, V6, aVR, aVL
- Circumflex artery
ST elevations seen in Leads V5, V6, aVR, aVL Answer: Lateral infarction EKG
- Circumflex artery
Pericarditis EKG Answer: Diffuse ST segment elevation and PR depression
Diffuse ST-segment elevation and PR depression Answer: Pericarditis
Premature junctional rhythm Answer: a premature beat with a narrow QRS complex
that is either not preceded by a P wave or has a P wave that appears very close to the
QRS complex, sometimes even buried within it
a premature beat with a narrow QRS complex that is either not preceded by a P wave
or has a P wave that appears very close to the QRS complex, sometimes even buried
within it Answer: Premature junctional rhythm
Source of most pulmonary emboli Answer: Deep veins (DVT)
- Legs & pelvis
- Less common - vena cava, renal veins or upper extremities
Deep vein thrombosis is associated with? Answer: pulmonary embolism
Virchow's Triad Answer: Factors that lead to the development of thrombus
- Endothelial injury
- Abnormal blood flow
- Hypercoagulability
Risk Factors for Deep Vein Thrombosis and Pulmonary Embolism Answer: - Inherited
or acquired disorders
- CHF, MI, Stroke
- HIV increases risk by 40%
- Endothelial injury
- Abnormal blood flow
- Hypercoagulability Answer: Virchow's Triad
- Factors that lead to the development of thrombus
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