Pulmonic regurgitation cardiac MRI
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Pulmonic regurgitation Microchapters |
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Diagnosis |
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1], Associate Editor(s)-in-Chief: Aravind Kuchkuntla, M.B.B.S[2], Aysha Anwar, M.B.B.S[3], Javaria Anwer M.D.[4]
Overview
Cardiac magnetic resonance(CMR) is a gold standard for assessment of morphology of the pulmonary valve, for quantification of the severity of the regurgitation and the RV systolic function. CMR is useful in quantification of the regurgitant volume and the regurgitant fraction of PR by using sequences called “velocity- encoded phase-contrast images”. CMR is useful for evaluating pulmonary regurgitant fraction, RV end-diastolic and end-systolic volume and RV ejection fraction. CMR is the diagnostic modality preferred to determine the requirement of re-intervention among patients with repaired tetralogy of Fallot and to assess the ventricular function and dimensions.
Cardiac MRI
Cardiac magnetic resonance(CMR) is a gold standard for assessment of the morphology of the pulmonary valve, for quantification of the severity of the regurgitation and the RV systolic function.
- CMR is useful in quantification of the regurgitant volume and regurgitant fraction of PR by using sequences called “velocity- encoded phase-contrast images”.[1]
- CMR is useful for evaluating pulmonary regurgitant fraction, RV end-diastolic and end-systolic volumes, and RV ejection fraction
- CMR is the diagnostic modality preferred to determine the requirement of intervention among patients with repaired tetralogy of fallot and to assess the ventricular function and dimensions.
- Increased; ≥95 mL/m2 for right ventricular and ≥50 mL/m2 for left ventricular indexed systolic volumes indicates ventricular dysfunction. It is important to note that decreased ejection fraction (≤35% for the RV and ≤50% for LV) as demonstrated by increased indexed systolic volumes is associated with worse functional class.[2][3]
ACC/AHA Guidelines- ACCF/ACR/AHA/NASCI/SCMR 2010 Expert Consensus Document on Cardiovascular Magnetic Resonance[5] (DO NOT EDIT)
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CMR may be used for assessing individuals with valvular heart disease in which evaluation of valvular stenosis, regurgitation, para- or perivalvular masses, perivalvular complications of infectious processes, or prosthetic valve disease are needed. CMR may be useful in identifying serial changes in LV volumes or mass in patients with valvular dysfunction. |
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References
- ↑ Wald RM, Redington AN, Pereira A, Provost YL, Paul NS, Oechslin EN; et al. (2009). "Refining the assessment of pulmonary regurgitation in adults after tetralogy of Fallot repair: should we be measuring regurgitant fraction or regurgitant volume?". Eur Heart J. 30 (3): 356–61. doi:10.1093/eurheartj/ehn595. PMID 19164336.
- ↑ Lust J, Griffith OM (1972). "Conditions of phenol extraction of RNA from rat liver subcellular cytoplasmic fractions. II. Effect of a glycine NaOH buffer on the separation of polysomal RNA". Prep. Biochem. 2 (2): 125–37. doi:10.1080/00327487208061466. PMID 5028368.
- ↑ Bouzas, Beatriz; Kilner, Philip J.; Gatzoulis, Michael A. (2005). "Pulmonary regurgitation: not a benign lesion". European Heart Journal. 26 (5): 433–439. doi:10.1093/eurheartj/ehi091. ISSN 0195-668X.
- ↑ Geva T (January 2011). "Repaired tetralogy of Fallot: the roles of cardiovascular magnetic resonance in evaluating pathophysiology and for pulmonary valve replacement decision support". J Cardiovasc Magn Reson. 13: 9. doi:10.1186/1532-429X-13-9. PMC 3036629. PMID 21251297.
- ↑ American College of Cardiology Foundation Task Force on Expert Consensus Documents. Hundley WG, Bluemke DA, Finn JP, Flamm SD, Fogel MA; et al. (2010). "ACCF/ACR/AHA/NASCI/SCMR 2010 expert consensus document on cardiovascular magnetic resonance: a report of the American College of Cardiology Foundation Task Force on Expert Consensus Documents". Circulation. 121 (22): 2462–508. doi:10.1161/CIR.0b013e3181d44a8f. PMC 3034132. PMID 20479157.