D sign (right ventricle)
Last revised by Joachim Feger on 14 Mar 2021
Citation, DOI, disclosures and article data
Citation:
Weerakkody Y, Feger J, D sign (right ventricle). Reference article, Radiopaedia.org (Accessed on 18 Apr 2024) https://doi.org/10.53347/rID-87724
rID:
87724
Article created:
12 Mar 2021,
Yuranga Weerakkody ◉
Disclosures:
At the time the article was created Yuranga Weerakkody had no recorded disclosures.
View Yuranga Weerakkody's current disclosures
Last revised:
14 Mar 2021,
Joachim Feger ◉
Disclosures:
At the time the article was last revised Joachim Feger had no recorded disclosures.
View Joachim Feger's current disclosures
Revisions:
2 times, by
2 contributors -
see full revision history and disclosures
Tags:
Synonyms:
- D-sign
- D-shaped left ventricle
- D sign in right heart failure
A D-shaped left ventricle or flattening of the interventricular septum with a D-shaped configuration is a feature described with significant right ventricular (RV) overload / right heart strain such as that occurring with complications of a sizable pulmonary embolic event. It was initially described in SPECT / scintigraphic studies although similar appearances have also been described in echocardiography1 and CT scans in similar situations.
References
- 1. Ma, Christopher M., Cohen, Joshua, Tolpin, Daniel. Right Ventricular Dysfunction and the “D”-shaped Left Ventricle. (2020) Anesthesiology. 132 (1): 155. doi:10.1097/ALN.0000000000002961
- 2. Movahed MR, Hepner A, Lizotte P, Milne N. Flattening of the interventricular septum (D-shaped left ventricle) in addition to high right ventricular tracer uptake and increased right ventricular volume found on gated SPECT studies strongly correlates with right ventricular overload. (2005) Journal of nuclear cardiology : official publication of the American Society of Nuclear Cardiology. 12 (4): 428-34. doi:10.1016/j.nuclcard.2005.04.004 - Pubmed
- 3. Wadhwa S et.al. Functional assessment of the right ventricle with gated myocardial perfusion SPECT. (2002) Clinical nuclear medicine. doi:10.1097/00003072-200212000-00005 - Pubmed