Flashcards
277 - Splitting
Cards in this deck (18)
- 1Describe Normal SplittingInspiration ---> drop in intrathoracic pressure ---> increased venous return --> increased RV filling ---> increased RV
stroke volume ---> increased RV ejection time ---> delayed closure of pulmonic valve.
Decreased pulmonary impedance (increased capacity of the pulmonary circulation) also occurs during inspiration, which contributes to delayed closure of pulmonic valve. - 2In Normal Splitting, what leads to delayed closure of the pulmonic valve?Inspiration ---> drop in intrathoracic pressure ---> increased venous return --> increased RV filling ---> increased RV
stroke volume ---> increased RV ejection time ---> delayed closure of pulmonic valve. - 3Describe Wide SplittingSeen in conditions that delay RV emptying (eg, pulmonic stenosis, right bundle branch block). Causes delayed pulmonic sound (especially on inspiration). An exaggeration of normal splitting.
- 4Describe Fixed SplittingHeard in ASD. ASD ---> left-to-right shunt
---> increased RA and RV volumes ---> increased flow through pulmonic valve such that, regardless of breath, pulmonic closure is greatly delayed - 5Describe Paradoxical SplittingHeard in conditions that delay aortic valve closure (eg, aortic stenosis, left bundle branch block). Normal order of valve closure is reversed so that P2 sound occurs before delayed A2 sound. Therefore on inspiration, P2 closes later and moves closer to A2, thereby “paradoxically” eliminating the split (usually heard in expiration).
- 6What type of splitting does the following describe? Seen in conditions that delay RV emptyingWide Splitting
- 7What type of splitting does the following describe? Seen in pulmonic stenosisWide splitting
- 8What type of splitting does the following describe? Seen in right bundle branch blockWide splitting
- 9What type of splitting does the following describe? Causes delayed pulmonic sound (especially on inspiration).Wide Splitting
- 10What type of splitting does the following describe? An exaggeration of normal splitting.Wide Splitting
- 11What type of splitting does the following describe? Heard in ASDFixed Splitting
- 12What type of splitting does the following describe? Regardless of breath, pulmonic closure is greatly delayed.Fixed Splitting
- 13What type of splitting does the following describe? ASD ---> left-to-right shunt ---> increased RA and RV volumes ---> increased flow through pulmonic valve such that, regardless of breath, pulmonic closure is greatly delayedFixed Splitting
- 14What type of splitting does the following describe? Heard in conditions that delay aortic valve closureParadoxical splitting
- 15What type of splitting does the following describe? Heard in aortic stenosisParadoxical splitting
- 16What type of splitting does the following describe? Heard in left bundle branch blockParadoxical splitting
- 17What type of splitting does the following describe? Normal order of valve closure is reversed so that P2 sound occurs before delayed A2 sound.Paradoxical splitting
- 18What type of splitting does the following describe? On inspiration, P2 closes later and moves closer to A2, thereby “paradoxically” eliminating the split (usually heard in expiration).Paradoxical splitting
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- User has deleted their subject information Flashcards on 277 - Splitting, created by Deleted user on 30/05/2017.
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- Deleted user · May 2017
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- May 30, 2017
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- Created by Victoria Wright · May 30, 2017
- Copied by Victoria Wright · May 30, 2017
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