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10 Cards in this Set
- Front
- Back
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List the Serious Causes of sinus bradycardia
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1. Inferior AMI
2. raised ICP 3. Hypothermia 4. Hypothyroidism |
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List the Other (non-serious) causes of sinus bradycardia.
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1. Good physical conditioning
2. Drugs ( BB ; CCB) 3. Vagal stimulation ( vomiting) |
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In regards to Sick Sinus Syndrome, which of the following is incorrect?
A. It is also known as "bradycardia-tachycardia" syndrome B. It is common in the elderly. C. The ECG features include intermittent cessation of P wave activity and Long pauses interrupted by escape rhythms. D. It can be exacerbated by digoxin, hyperthyroidism and hypokalaemia. |
D. Hyperkalaemia.
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In regards to Bradyarrhythmias, which of the following is incorrect?
A. With a Type I Second degree block, Anatomically, the block is in the AVN, above the Bundle of HIS. B. A Wenckebach Mobitz Type I block can not progress to Complete Heart Block. C. The block in Mobitz Type II Second degree Block is infranodal in origin. D. Advanced Second degree Mobitz Type II Block involves the block of 2 or more consecutive P waves. |
B. It can, in the setting of acute ischaemia.
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List the main Serious associations of Mobitz Type II Second degree Heart Block.
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1. Sudden Death
2. Stoke-Adams Attacks (Syncope) 3. Stroke 4. A slow ventricular rate. |
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Which of the following is not a feature of Second degree Mobitz Type II AV Block?
A. The atrial rate is greater than ventricular rate. B. The atrial rhythm is regular. C. The PR interval is not always constant for each QRS. D. QRS complexes are periodically dropped. |
C. The interval may be within normal limits or prolonged BUT is always constant for each conducted QRS.
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In regards to Complete Heart Block, which of the following is incorrect?
A. The commonest cause is Inferior AMI B. Sick sinus syndrome is associated with CHB. C. The QRS is narrow with block is within the Bundle of HIS D. The QRS is widened if the block is infra nodal. |
A. Commonest cause is myocardial fibrosis
- Occurs in 8% of inferior AMI |
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(Clinical Emergency Medicine)
In regards to First Degree Heart Block, which of the following is incorrect ? A. The PR duration is greater than 0.20 sec B. Every atrial complex is conducted to the ventricles. C. Myocarditis and Conduction disease in the SA node can be aetiologies. D. It can be a normal finding in Athletes and young adults. |
C. Conduction disease in the :
-AVN -HIS Purkinje System |
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(Clinical Emergency Medicine)
In regards to Second degree Heart Block, which of the following is incorrect ? A. In Mobitz Type I, there is progressive shortening of the R-R interval B. Some atrial complexes are not conducted to the ventricles. C. The PR interval is shortest in the first beat of the cycle. D. The R-R intervals between conducted beats are not constant. |
D. The R-R intervals between conducted beats are constant
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(Clinical Emergency Medicine)
Which of the following is correct regarding Second degree Heart Block ? A. Mobitz Type 1 is predominantly from conduction delay in the HIS-Purkinje system B. The PR and R-R intervals in Mobitz Type II are constant. C. The conduction delay in Mobitz Type II is at the AVN. D. The R-R interval remains constant in Mobitz Type I |
B.
A. AV Node 72% His-Purkinje 28% C. Infranodal D. R-R interval progressively shortens as the PR interval lengthens. |
