Obstetric ultrasound evaluation of the fetus should include routine imaging of the heart. The four-chamber view provides valuable information regarding the presence or absence of structural heart disease.' Fetal heart rate and rhythm are also studied as a routine part of the obstetric scan. Thus, dysrhythmias can be evaluated accurately. The finding of unsustained fetal atrial dysrhythmia is common and usually not associated with structural heart disease.2,3 This case report describes the ultrasound evaluation of a fetus with multiple intracardiac rhabdomyomas and an unsustained asymptomatic atrial dysrhythmia. This case emphasizes the importance of the basic four-chamber fetal cardiac view when scanning the fetal heart.
References
1.
1. Copel JA, Pilu G, Green J, Hobbins JC, Kleinman CS: Fetal echocardiographic screening for congenital heart disease: The importance of the four-chamber view. Am J Obstet Gynecol1987;157:648-655.
2.
2. Cameron A, Nicholson S. Nimrod C, Harder J, Davies D, Fritzer M: Evaluation of fetal cardiac dysrhythmias with two-dimensional, M-mode, and pulsed-Doppler ultrasonography. Am J Obstet Gynecol1988;158:286-290.
3.
3. Kleinman CS, Copel JA, Weinstein EM, Santulli TV Jr, Hobbins JC: In utero diagnosis and treatment of fetal supraventricular tachycardia. Semin Perinatol1985;9:113-129.
4.
4. Fenoglio JJ, McAllister HA, Ferrans VJ: Cardiac rhabdomyoma: A clinopathologic and electron microscopic study. Am Heart J1976;38:241-251.
6. Biancaniello TM, Meyer RA, Gaum WE, Kaplan SA: Primary benign intramural ventricular tumors in children: Preand postoperative electrocardiographic, echocardiographic, and angiocardiographic evaluation. Am Heart J1982;103:852-857.
7.
7. Crawford DC, Garrett C, Tynan M, Neville BG, Allan LD: Cardiac rhabdomyomata as a marker for the antenatal detection of tuberous sclerosis. J Med Genet1983;20:303-312.
8.
8. Gresser CD, Shime J, Rakowski H, Smallhorn JF, Hui A, Berg JJ: Fetal cardiac tumor: A prenatal echocardiographic marker for tuberous sclerosis. Am J Obstet Gynecol1987;156:689-690.
9.
9. DeVore GR, Hakim S, Kleinman CS, Hobbins JC: The in utero diagnosis of an interventricular septal cardiac rhabdomyoma by means of real-time directed, M-mode echocardiography. Am J Obstet Gynecol1982;143:967-969.
10.
10. Dennis MA, Appareti K, Manco-Johnson ML, Clewell W, Wiggins J: The echocardiographic diagnosis of multiple fetal cardiac tumors. J Ultrasound Med1985;4:327-329.
11.
11. Boxer RA, Seidman S. Singh S. LaCorte MA, Pek H, Goldman MA, Parnell V: Congenital intracardiac rhabdomyoma: Prenatal detection by echocardiography, perinatal management, and surgical treatment. Am I Perinatol1986;3:303-305.
12.
12. Brezinka O, Huter O, Haid C, Hammerer I, Dietze O: Prenatal diagnosis of a heart tumor. Am Heart J1988;116:563-566.
13.
13. Birnbaum SE, McGahan JP, Janos GG, Meyers M: Fetal tachycardia and intramyocardial tumors. J Am Coll Cardiol1985;6:1358-1361.
14.
14. Hoadley SD, Wallace RL, Miller JF, Murgo JP: Prenatal diagnosis of multiple cardiac tumors presenting as an arrhythmia. J Clin Ultrasound1986;14:639-643.
