Results and stats for "Heart block"

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- - [...] heart block occurs when there is a delay in the impulse as it travels through the AV node.
  - First degree AV
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- - What malfunctions in first degree AV heart block?
  - Impulse is delayed as it travels through the AV node
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- - What indicates first degree AV heart block on an ECG?
  - P-R interval >0.22 seconds
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- - [...] AV heart block occurs when the P-R interval lengthens on consecutive beats until there is a dropped QRS complex.
  - Mobitz type 1 second degree
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- - What malfunctions in Mobitz type 1 second AV degree heart block?
  - Some atrial impulses fail to travel through the AV node to the ventricles
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- - What indicates Mobitz type 1 second degree AV heart block on an ECG?
  - Progressive lengthening of the P-R interval until a QRS complex is skipped
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- - [...] heart block occurs when QRS complexes are skipped intermittently without being preceded by P-R interval prolongation.
  - Mobitz type 2 second degree AV
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- - What malfunctions in Mobitz type 2 second degree heart block?
  - Some atrial impulses fail to travel through the AV node to the ventricles
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- - What indicates Mobitz type 2 second degree AV heart block on an ECG?
  - Intermittent skipping of QRS complexes without progressive lengthening of P-R intervals
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- - [...] heart block occurs when there is a complete dissociation between P and QRS complexes on an ECG.
  - Third degree AV
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- - What malfunctions in third degree AV heart block?
  - Impulse from the atria does not travel through the AV node to the ventricles
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- - What indicates third degree AV heart block on an ECG?
  - Complete dissociation between P and QRS complexes
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- - [...] heart block occurs when conduction through the left ventricle is delayed so that the right ventricle contracts before the left.
  - Left bundle branch
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- - What malfunctions in left bundle branch heart block?
  - Conduction in the left ventricle is delayed so that the right ventricle contracts before the left
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- - How is first degree AV heart block treated?
  - Treatment is unnecessary
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- - [...] heart block occurs when only every second or third P wave conducts to the ventricles.
  - 2:1/3:1 (advanced) AV
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- - What malfunctions in 2:1/3:1 (advanced) AV heart block?
  - Some atrial impulses fail to travel through the AV node to the ventricles
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- - What indicates 2:1/3:1 (advanced) AV heart block on an ECG?
  - Two or three P waves to each QRS complex
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- - [...] heart block is also called Wenckebach block phenomenon.
  - Mobitz type 1 second degree AV
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- - Mobitz type 1 second degree AV heart block is also called [...].
  - Wenckebach block phenomenon
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- - Progression from second degree AV block to complete heart block occurs more frequently following Mobitz type [...] block.
  - 2
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- - How is Mobitz type 1 second degree AV heart block treated?
  - Monitored, not treated
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- - How is Mobitz type 2 second degree AV heart block treated?
  - Pacemaker
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- - An escape rhythm which originates in the bundle of His below the site of a third degree AV heart block gives rise to a [narrow/wide] QRS complex.
  - narrow
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- - An escape rhythm which originates in the His-Purkinje system below the site of a third degree AV heart block gives rise to a [narrow/wide] QRS complex.
  - wide
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- - An escape rhythm which originates in the bundle of His below the site of a third degree AV heart block has a rate of [...] bpm.
  - 50-60
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- - An escape rhythm which originates in the His-Purkinje system below the site of a third degree AV heart block has a rate [...] bpm.
  - <40
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- - Does an escape rhythm which originates in the bundle of His below the site of a third degree AV heart block have a reliable rhythm?
  - Yes, relatively
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- - Does an escape rhythm which originates in the His-Purkinje system below the site of a third degree AV heart block have a reliable rhythm?
  - No
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- - How is third degree AV heart block treated?
  - Pacemaker
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- - [...] heart block occurs when conduction through the right ventricle is delayed so that the left ventricle contracts before the right.
  - Right bundle branch
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- - What malfunctions in right bundle branch heart block?
  - Conduction in the right ventricle is delayed so that the left ventricle contracts before the right
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- - Is right bundle branch heart block always pathological?
  - No
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- - Is left bundle branch heart block always pathological?
  - Yes
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