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ISSN 0185-3252 (Print)
Revista de la Asociación Médica del Centro Médico ABC

2019, Number 1

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An Med Asoc Med Hosp ABC 2019; 64 (1)

Left ventricular false tendon in premature babies treated in a private hospital in Mexico City

Pozos SHJ, Treviño BX, Iglesias LJ, Bernárdez ZI, Escobedo BL, Barrón PR, Marín RM

Language: Spanish
References: 18
Page: 12-16
PDF size: 184.79 Kb.


ABSTRACT

Introduction: Left ventricular false tendon is a fibromuscular structure originating in the interventricular septum that crosses the left ventricle to the papillary muscles or the lateral wall or the cardiac apex; it is considered a benign anatomic variant of the heart that can be present in up to 80% of newborns. It has been associated with physiological murmur in up to 76% of the pediatric patients. Objective: To describe the anthropometric and clinical characteristics of premature neonates with left ventricular false tendons and their relationship with the presence of physiological murmur; the study was performed at Hospital Español de México. Material and methods: A cross-sectional study was carried out with 324 premature newborns admitted to the Neonatal Intensive Care Unit of the Hospital Español de México. Neonates who had an echocardiographic study performed at 72 hours of age and whose mothers gave their consent to participate were included by a non-probabilistic sample of consecutive cases. The variables considered were sex, weight, height, and weeks of gestation, presence of functional murmur and presence of false tendon of the left ventricle. With SPSS version 23.0, descriptive and inferential statistics were performed to answer the study’s objectives. Results: Of the 324 preterm infants, 53% were male and 47% female. The median found was: weight 1,750 kg, size 43 cm, and 33 weeks of gestation; 68% presented functional murmur and 78.4%, false tendon of the left ventricle. A statistically significant association was found between physiological murmur and the presence of false tendon of the left ventricle (p = 0.047). Conclusion: The frequency of false tendon of the left ventricle in the neonatal population was high. More research is suggested to define whether it is a normal anatomical structure or a clinical abnormality.


REFERENCES

  1. Tamborini G, Pepi M, Celeste F, Muratori M, Susini F, Maltagliati A et al. Incidence and characteristics of left ventricular false tendons and trabeculations in the normal and pathologic heart by second harmonic echocardiography. J Am Soc Echocardiogr. 2004; 17 (4): 367-374.

  2. Brenner JI, Baker K, Ringel RE, Berman MA. Echocardiographic evidence of left ventricular bands in infants and children. J Am Coll Cardiol. 1984; 3 (6): 1515-1520.

  3. Arias DC, Hirschhaut E, Chacón RM, Caraballo L, Rodríguez ME. Falsos tendones: estructuras inexploradas. Avances Cardiol. 2017; 37 (1): 22-25.

  4. Turner W. Another heart with moderator band in left ventricle. J Anat Physiol. 1896; 30(Pt 4): 568-569.

  5. Sánchez FF, Sánchez FML, Grima MM, Sánchez FM, Sánchez DC. Estudio básico e implicaciones clínicas del falso tendón del ventrículo izquierdo. ¿Está asociado al soplo inocente infantil o a enfermedad cardiaca? Rev Esp Cardiol. 2015; 68(8): 700-705.

  6. Darazs B, Taylor HR, van Gelder AL. The relevance of left ventricular bands. South Afr Med J. 1988; 74 (2): 68-71.

  7. Nishimura T, Kondo M, Umadome H, Shimono Y. Echocardiographic features of false tendons in the left ventricle. Am J Cardiol. 1981; 48 (1): 177-183.

  8. Silbiger JJ. Left ventricular false tendons: Anatomic, echocardiographic, and pathophysiologic insights. J Am Soc Echocardiogr. 2013; 26 (6): 582-588.

  9. Bhatt M, Alfonso C, Bhatt A, Lee S, Ferreira A, Salerno T et al. Effects and mechanisms of left ventricular false tendons on functional mitral regurgitation in patients with severe cardiomyopathy. J Thorac Cardiovasc Surg. 2009; 138 (5): 1123-1128.

  10. Fonseca SL, Bobadilla AA, Espino VJ. Soplo normal, inocente o inorgánico. Acta Pediatr Mex. 2015; 36: 50-54.

  11. Gerlis LM, Wright HM, Wilson N, Erzengin F, Dickinson DF. Left ventricular bands. A normal anatomical feature. Br Heart J. 1984; 52 (6): 641-647.

  12. Darazs B, Butterworth A, Hesdorffer C, Ziady F. The possible etiology of the vibratory systolic murmur. Clin Cardiol. 1987; 10 (5): 341-346.

  13. Kenchaiah S, Benjamin E, Evans JC, Aragam J, Vasan R. Epidemiology of left ventricular false tendons: clinical correlates in the Framingham Heart Study. J Am Soc Echocardiogr. 2009; 22 (6): 739-745.

  14. Vered Z, Meltzer R, Benjamin P, Motro M, Neufeld H. Prevalence and significance of false tendons in the left ventricle as determined by echocardiography. Am J Cardiol. 1984; 53 (2): 330-332.

  15. Philip S, Cherian KM, Wu MH, Lue HC. Left ventricular false tendons: echocardiographic, morphologic, and histopathologic studies and review of the literature. Pediatr Neonatol. 2011; 52 (5): 279-286.

  16. Erdmenger OJ. Avances recientes en ecocardiografía pediátrica. Arch Cardiol Mex. 2003; 73 (S 1): S41-S43.

  17. Sethuraman KR, Sriram R, Balachandar J. Left ventricular false tendons: echocardiographic incidence in India and clinical importance. Int J Cardiol. 1984; 6 (3): 385-387.

  18. Luetmer PH, Edwards WD, Seward JB, Tajik AJ. Incidence and distribution of left ventricular false tendons: an autopsy study of 483 normal human hearts. J Am Coll Cardiol. 1986; 8 (1): 179-183.




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