Pulmonic regurgitation Chest X-Ray
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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]
Overview
Chest x ray may not be required for the diagnosis of pulmonic regurgitation (PR). However, lateral and PA view of chest radiograph may help determining the right ventricular enlargement. Right atrial enlargement may also be seen among patients with concomitant tricuspid regurgitation. On plain chest Xray PR may be characterized by right ventricular enlargement, prominent pulmonary trunk, features of tricuspid regurgitation (TR), and of congestive heart failure (CHF).
Chest X ray
- There are no chest x ray findings required for the diagnosis of pulmonic regurgitation. However, lateral and PA view of chest radiograph may help determine the complications and associated conditions of PR, which include right ventricular enlargement. Right atrial enlargement may also be seen among patients with concomitant tricuspid regurgitation.[1]
- On plain chest Xray PR may be characterized by[2][3][4]:
- Right ventricular enlargement (specially among patients with surgical repair of TOF)
- Prominent pulmonary trunk
- Features of tricuspid regurgitation (TR) may also be present. To read more about CXR findings associated with TR, click here.
- Features of congestive heart failure (CHF) may also be present. To read more about CXR findings associated with CHF, click here.
Right ventricular enlargement[3][4]:
- Progressive right ventricular enlargement is common among patients with PR after TOF repair.
- On CXR, right heart failure (RHF) is chracterised by right ventricular enlargement.
- Right ventricular enlargement on PA view demonstrates rounded left heart border and uplifted cardiac apex.
- On lateral view, filling of the retrosternal space and rotation of the heart posteriorly.[5] CXR has limited utility in the diagnosis of RHF.[6]
Tetralogy of Fallot (TOF)
- On CXR of a patient with PR as a complication of tetrology of Fallot (TOF) repair, a “boot shaped” heart may be demonstrated.[7]
Prominent pulmonary trunk[8]
- On CXR of a patient with PR secondary to pulmonary hypertension (PAH) or idiopathic dilatation of pulmonary artery (IDPA), featurs demonstrating PAH may include prominent pulmonary trunk and broadened mediastinum.
- It is also important to note that IDPA is a diagnosis of exclusion and pulmonary artery/ pulmonary trunk may appear prominent in the chest X ray of young patients, especially women or in a chest X ray AP/lordotic view.
Demonstration of Right Ventricular Enlargement
Chest X-ray Examples
References
- ↑ https://radiopaedia.org/articles/right-ventricular-enlargement Accessed on 3rd January, 2017
- ↑ "Pulmonary valve regurgitation | Radiology Reference Article | Radiopaedia.org".
- ↑ 3.0 3.1 Shin, Yu Rim; Jung, Jo Won; Kim, Nam Kyun; Choi, Jae Young; Kim, Young Jin; Shin, Hong Ju; Park, Young-Hwan; Park, Han Ki (2016). "Factors associated with progression of right ventricular enlargement and dysfunction after repair of tetralogy of Fallot based on serial cardiac magnetic resonance imaging". European Journal of Cardio-Thoracic Surgery. 50 (3): 464–469. doi:10.1093/ejcts/ezw049. ISSN 1010-7940.
- ↑ 4.0 4.1 O'Meagher S, Ganigara M, Tanous DJ, Celermajer DS, Puranik R (June 2014). "Progress of right ventricular dilatation in adults with repaired tetralogy of Fallot and free pulmonary regurgitation". Int J Cardiol Heart Vessel. 3: 28–31. doi:10.1016/j.ijchv.2014.02.003. PMC 5801270. PMID 29450166.
- ↑ "Right ventricular enlargement | Radiology Reference Article | Radiopaedia.org".
- ↑ 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.
- ↑ Hiader EA. The boot-shaped heart sign. Radiology, 2008; 246 (1):328-9.
- ↑ "Enlarged pulmonary trunk on chest radiography (differential) | Radiology Reference Article | Radiopaedia.org".