|Chest X ray of a person with dextrocardia situs inversus showing the cardiac apex pointing towards right|
Dextrocardia (from Latin dexter, meaning "right," and Greek kardia, meaning "heart") is a rare congenital condition in which the apex of the heart is located on the right side of the body. There are two main types of dextrocardia: dextrocardia of embryonic arrest (also known as isolated dextrocardia) and dextrocardia situs inversus. Dextrocardia situs inversus is further divided.
Dextrocardia of embryonic arrest
In this form of dextrocardia, the heart is simply placed further right in the thorax than is normal. It is commonly associated with severe defects of the heart and related abnormalities including pulmonary hypoplasia.
Dextrocardia situs inversus
Dextrocardia with situs inversus refers to the heart being a mirror image situated on the right side. For all visceral organs to be mirrored, the correct term is dextrocardia situs inversus totalis.
Although statistically people with dextrocardia do not have any medical problems from the disorder, they may be prone to a number of bowel, esophageal, bronchial and cardiovascular disorders (such as double outlet right ventricle, endocardial cushion defect and pulmonary stenosis). Certain cardiovascular and pulmonary disorders related to dextrocardia can be life-threatening if left unchecked
Dextrocardia with situs solitus
In contrast to dextrocardia situs inversus which is only rarely associated with congenital heart disease, dextrocardia situs solitus is often associated with intracardiac anomalies. Dextrocardia, situs solitus presents a surgical challenge not per se due to associated cardiac malformation, but because achieving adequate exposure is difficult. Right sided structures such as right atrium, right ventricle and tricuspid valve are oriented posteriorly in dextrocardia with situs solitus (in contrast to dextrocardia with situs inversus). This presents a surgical challenge to the surgeons operating on the right sided cardiac structures in a case of dextrocardia with situs solitus.
Technical dextrocardia refers to an ECG reading that has no basis in the patient's anatomy. This apparent presentation is typically caused by the accidental lead placement of the left and right arm electrodes. Usually, this would show as an extreme axis deviation.
ECG leads must be placed in reversed positions on a person with dextrocardia. In addition, when defibrillating someone with dextrocardia, the pads should be placed in reverse positions. That is, instead of upper right and lower left, pads should be placed upper left and lower right.
Dextrocardia is estimated to occur in approximately 1 in 12,019 pregnancies.
- Stephenson, Susan (2012). Diagnostic Medical Sonography Obstetrics and Gynecology. 351 West Camden Street Baltimore, MD 21201: Lippincott Williams & Wilkins. p. 582.CS1 maint: location (link)
- M. E. Abbott & J. C. Meakins (1915). "On the differentiation of two forms of congenital dextrocardia". Bulletin of the International Association of Medical Museums (5): 134–138.
- "Dextrocardia with Situs Inversus".
- MedlinePlus Medical Dictionary. "Dextrocardia".
- Renee A, Laux MS. "Kartagener Syndrome". Archived from the original on 2012-11-05. Retrieved 2013-05-14.
- Mahajan, Sachin; Khanna, Sudhansoo; Kumar, Bhupesh; Halder, Vikram (2020). "Dextrocardia, situs solitus, inlet ventricular septal defect (VSD), and iatrogenic tricuspid regurgitation (TR)―A surgical perspective". Journal of Cardiac Surgery. 35 (6): 1383–1386. doi:10.1111/jocs.14587. ISSN 1540-8191. PMID 32349171. S2CID 217585359.
- Bindra, S. MD; Tabibiazar, R. MD; Mazar, M MD & Dave, R MD (2011). "Clinical Vignette: Dextrocardia with Situs Inversus: Through the Looking Glass with an ECG". Proceedings of UCLA Healthcare. Department of Medicine, UCLA. 15. Archived from the original on 2014-06-06. Retrieved 2013-05-14.
- Eddy, S. "Dextrocardia and Proper Lead Placement".
- Deuse, Tobias; Reitz, Bruce A. (September 2009). "Heart-Lung Transplantation In Situs Inversus Totalis". The Annals of Thoracic Surgery. 88 (3): 1002–1003. doi:10.1016/j.athoracsur.2009.01.060. PMID 19699943.
- Bohun CM, Potts JE, Casey BM, Sandor GG (July 2007). "A population-based study of cardiac malformations and outcomes associated with dextrocardia". Am. J. Cardiol. 100 (2): 305–9. doi:10.1016/j.amjcard.2007.02.095. PMID 17631088.
- Sato, T.; et al. (2014). "Clinical Course and Prognosis of Minor Abnormal Sonographic Findings in Fetal Echocardiography: Five Years of Experience at a Single Institute". Pediatric Cardiology and Cardiac Surgery (in Japanese and English). 30 (5): 563–568. doi:10.9794/jspccs.30.563.
- Dextrocardia at NIH's Office of Rare Diseases
- Dextrocardia with situs inversus at NIH's Office of Rare Diseases
|In cognitive abilities||Geschwind–Galaburda hypothesis|
|In eyes||Ocular dominance|
|Handedness in boxing||Southpaw stance||Orthodox stance|
|Handedness in people||Musicians|
|Handedness related to|
|Handedness measurement||Edinburgh Handedness Inventory|
|In major viscera||Situs solitus||Situs ambiguus||Situs inversus|
|Footedness in surfing||Regular foot||Goofy foot|