Right ventricular outflow tract obstruction differential diagnosis: Difference between revisions
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{{Right ventricular outflow tract obstruction}} | {{Right ventricular outflow tract obstruction}} | ||
{{CMG}}; '''Associate Editor-In-Chief:''' {{CZ}}; [[User:KeriShafer|Keri Shafer, M.D.]] [mailto:kshafer@bidmc.harvard.edu] | |||
==Overview== | |||
==Differentiating Right ventricular outflow tract obstruction from other Diseases== | |||
Right ventricular outflow tract obstruction must be distinguished from several other conditions. | Right ventricular outflow tract obstruction must be distinguished from several other conditions. | ||
1. [[Atrial septal defect]]: Also has a systolic ejection murmur, wide fixed split S2, EKG showing [[RVH]]. In ASD the split of the S2 is fixed, there is no ejection click. | 1. [[Atrial septal defect]]: Also has a systolic ejection murmur, wide fixed split S2, EKG showing [[RVH]]. In ASD the split of the S2 is fixed, there is no ejection click. | ||
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{{reflist|2}} | {{reflist|2}} | ||
[[Category: Cardiology]] | [[Category:Disease]] | ||
[[Category:Cardiology]] | |||
[[Category:Congenital heart disease]] | |||
[[Category:Pediatrics]] | |||
{{WH}} | {{WH}} | ||
{{WS}} | {{WS}} | ||
Revision as of 16:11, 5 October 2012
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Right ventricular outflow tract obstruction Microchapters |
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Differentiating Right ventricular outflow tract obstruction from other Diseases |
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor-In-Chief: Cafer Zorkun, M.D., Ph.D. [2]; Keri Shafer, M.D. [3]
Overview
Differentiating Right ventricular outflow tract obstruction from other Diseases
Right ventricular outflow tract obstruction must be distinguished from several other conditions.
1. Atrial septal defect: Also has a systolic ejection murmur, wide fixed split S2, EKG showing RVH. In ASD the split of the S2 is fixed, there is no ejection click.
2. Small Ventricular septal defect: Amyl nitrate increases venous return and increases the murmur of pulmonary stenosis, in VSD the murmur becomes softer.
3. Mild left-sided outflow obstruction: With valsalva maneuver the murmur of aortic stenosis becomes softer after about 5 beats, with pulmonary stenosis it becomes softer within 3 beats.
4. Acyanotic or pink tetralogy of Fallot: with amyl nitrate and increased venous return the murmur of PS increases, and the murmur of tetralogy decreases because of peripheraldilation and an increase in right to left shunting.