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Abstract A criss-cross heart is an extremely rare congenital cardiac anomaly characterized by crossing of the inflow streams of the two ventricles and almost always associated with other severe cardiac diseases. In this article, a total of seven patients with criss-cross morphology were identified from the hospital records and clinical characteristics of these patients and associated congenital cardiac diseases were discussed in the light of the literature data. Age on admission ranged from one month to 13 years. Of the seven patients, three presented with cyanosis, three with murmur, and one with respiratory distress and heart failure. The visceroatrial situs was solitus in all patients including levocardia in five and dextrocardia in two.

The atrioventricular connection was concordant in four patients and discordant in one patient, while double-inlet ventricle was present in two patients. The ventriculoarterial connection was concordant in four patients and discordant in one patient, while doubleoutlet ventricle was present in one patient and single outlet (pulmonary atresia) in another patient. Two patients underwent corrective biventricular repair, while one patient underwent bidirectional cavopulmonary shunting. Crisscross heart is an extremely rare and complex anomaly which should be kept in mind to recognize with echocardiography. Case Presentation Between January 2006 and August 2014, seven patients with criss-cross morphology were identified from the hospital medical records and cardiac catheterization database. In addition to the demographic and clinical findings, echocardiography, cardiac catheterization, and angiography findings of all of the patients at the time of initial diagnosis were obtained from their medical records. The diagnosis of criss-cross morphology was established by echocardiography in case of inability to obtain a characteristic four-chamber view in any plane through detailed two-dimensional and Doppler echocardiographic examinations using the 3 or 7 MHz probe of a Vivid 7 ultrasound device (GE Vingmed Ultrasound AS, Horten, Norway).

Cardiovascular Surgery and Interventions publishes original articles on topics in cardiovascular surgery, cardiovascular anesthesia and cardiology. These encompass all relevant clinical, surgical and laboratory studies, editorials, current and collective reviews, technical know-how papers, case reports, interesting images, How to Do It papers, correspondence and commentary. Figure 1: Echocardiographic images of Case 7 demonstrating the (a) absence of parallelism of the atrioventricular valves [mitral valve was cut through the short axis, whereas tricuspid valve through the long axis] and (b) vice versa and the (c, d) absence of characteristic four-chamber view demonstrating only one of the atrioventricular valve seen.