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Three-dimensional echocardiographic assessment of Chiari’s network relationship with the left ventricular false tendon
The Egyptian Heart Journal volume 74, Article number: 49 (2022)
Left ventricular false tendon (LVFT) is a fibromuscular band crossing the left ventricular cavity. And Chiari’s network (CN) is a highly mobile, mesh-like, echogenic structure in right atrium. In this study, we aimed to evaluate the coexistence of LVFT in patients with CN. CN patients were examined with live/real-time three-dimensional transthoracic echocardiography (TTE) for visualization of LVFT.
This is a single-center prospective study of 49 patients with CN. In literature studies, the average ratios of LVFT were 22% in the normal population. In our study, an increased ratio of LVFT (n = 31, 63.3%) was found in CN patients evaluated with a three-dimensional TTE (63.3% versus 22%) (p = 0.01). The interatrial septal aneurysm was found in 31 (63.3%) patients with CN. And, the positive contrast echocardiography examination was determined in 22 (61.1%) patients with CN.
Our study reveals that CN is associated with LVFT and is also associated with cardiac anomalies like an interatrial septal aneurysm, and atrial septal defect. And LVFT can be evaluated better with three-dimensional TTE than with traditional two-dimensional TTE. Patients with CN should be evaluated more carefully by three-dimensional echocardiography as they can be in synergy in terms of the cardiac pathologies they accompany.
Chiari’s network (CN) is seen as a mobile, reticulated structure in many localizations of the right atrium (Fig. 1, Additional file 1: Video 1). It is the right leaflet remnant of the sinus venous and directs blood flow from the inferior vena cava to the interatrial septum in embryological life . It was first defined by Hans Chiari . Generally, it has no clinical findings. However, autopsy  and echocardiography  studies have shown that the incidence of clinically important cardiac abnormalities such as patent foramen ovale (PFO), atrial septal defect (ASD), and interatrial septal aneurysm (IASA) is higher in patients with CN . As with other right-sided heart structures, CN could be a potential site for the development of infective endocarditis . Catheter entrapment may also happen around the CN during intracardiac procedures .
Left ventricular false tendon (LVFT) is a thin, ribbon-like, fibrous, and/or muscular structure that extends from the septum to the left ventricle posterior or lateral wall or both  (Fig. 1, Additional file 1: Video 1). It can be observed between papillary muscles or between papillary muscles and the left ventricle wall . And they can be found single or multiple (Fig. 2, Additional file 2: Video 2). In embryological life, heart muscle develops from the inner and outer layers. LVFT and trabecular structures grow out of the inner layer. Unlike trabeculae carneae, papillary muscle, and chordae tendineae, LVFT extends as a band between left ventricle walls . It is rarely detectable on routine two-dimensional transthoracic echocardiography (TTE) examination. Particularly modified images are usually required . And it is best detected on apical long-axis images. In general, it has no clinical significance . Robert et al. showed that turbulence created by LVFT in the ventricle causes innocent vibration murmur . Another study observed that the severity of mitral regurgitation decreased in patients with LVFT in dilated cardiomyopathy . However, in a study positive correlation was found between LVFT and ventricular premature beats conducted in healthy individuals . And, some studies revealed that LVFT is effective in the occurrence of ventricular tachycardia [14, 15]. Also, LVFT ablation has been beneficial in the termination of narrow QRS tachycardia . Furthermore, Nakagawa et al. observed that the J wave, which is known to be associated with the formation of ventricular fibrillation, was detected more frequently in patients with LVFT . These studies are based on the stimulation of purkinje fibers in the structure of LVFT during the mechanical tension of the left ventricle wall. In addition to the arrhythmic effects of LVFT, rupture of LVFT due to surgery, ischemic or dilatation may also cause contraction defects . Moreover, some case studies of infective endocarditis localized in LVFT contribute to the clinical importance of LVFT .
Three-dimensional echocardiographic evaluation to overcome many of the disadvantages of two-dimensional echocardiography has been fully recognized. Cardiac structural disorders can be evaluated better with three-dimensional TTE than with traditional two-dimensional TTE [20,21,22]. Three-dimensional echocardiography allows improvement in the accuracy and reproducibility of the evaluation of cardiac abnormalities by eliminating the need for geometric modeling and the errors caused by foreshortened views. Three-dimensional echocardiography provides more realistic visualization of cardiac lesions . Therefore, diagnosis of LVFT cannot be made with certainty by routine two-dimensional TTE . In our study, we examined the coexistence of two congenital anatomical variants using the three-dimensional TTE method.
There are few studies about CN or LVFT in the literature. And, to our best knowledge, there is no study conducted on the coexistence of these two congenital residues.
Study design and population
We conducted a single-center, prospective study with CN cases who were admitted to the cardiology polyclinic with various complaints. Patients’ clinical, laboratory, electrocardiography, and echocardiography findings were recorded.
In the echocardiography evaluation of 12,171 patients, CN was detected in 49 cases. All possible cases of CN were included based on a cardiologist-approved algorithm (at least post-fellowship experience of 5 years). If insufficient information was available to apply the definition criteria, the event was excluded from the study. All confirmators, reviewers, and abstracters were blinded concerning the study. A detailed physical examination of all patients was performed. Twelve-channel electrocardiography and standard TTE images were obtained. Six of the patients were excluded from the study because of the lacking blood tests.
Echocardiography examination (transthoracic and transesophageal) was performed with a Philips Medical Systems iE33xMATRIX (Bothell, WA, USA) echocardiography device with a 1–5 MHz X5-1 probe. TTE images were examined following the guidelines .
In our study, all patients with CN were also evaluated with real-time three-dimensional TTE. Following the literature , the conditions of bilateral echo-free space and loosening of the tendon in the systolic phase were sought in the echocardiographic images to distinguish LVFT from other structures of the heart.
A contrast echocardiographic examination was performed in patients with IASA or suspicious Doppler flow in the interatrial or ventricular septum. The contrast echocardiographic procedure was performed by applying agitated saline infusion. The procedure was repeated by performing the valsalva maneuver during the procedure in patients whose transition was not observed in routine practice. Transesophageal echocardiography (TEE) was performed in patients with positive contrast echocardiography for assessment of the anatomy of the atrial and ventricular septum.
The study data were evaluated by double-blinded consultant cardiologists (at least post-fellowship experience of 5 years).
While evaluating the findings obtained in the study, “SPSS for Windows 16.0” statistical package program (SPSS Inc, Chicago, IL, USA) was used for statistical analysis. Since continuous variables were normally distributed as mean ± standard deviation and categorical data were expressed as percentages. The compliance of the data to the normal distribution was evaluated with the Kolmogorov–Smirnov test. The assumption of normal homogeneity of the data was determined by the ANOVA (one-way analysis of variance) test. Student t test was used in the analysis of non-categorical data. Correlations of nonparametric data were investigated by Spearsman and the correlation of parametric data with Pearson correlation analysis. Independent sample t test was used to compare the mean values of two separate groups. Variance analysis was used to identify different groups. The Chi-square test was used to evaluate categorical variables. Comparison of the frequency of LVFT found as a result of studies in the literature and the frequency of LVFT in patients with CN in our study was performed using the Chi-square test. For statistical significance p-value < 0.05 was accepted.
In our study, CN was found in 49 (0.4%) of 12,171 patients who were evaluated with two-dimensional TTE in the routine cardiology polyclinic examination. The distribution of the patients by gender was 16 (32.7%) females (age: 35.1 ± 15.3 years) and 33 (67.3%) males (age: 36.2 ± 15.1 years). Demographic, echocardiographic, and laboratory data of the study group are listed in Table 1. Normal sinus rhythm was observed on electrocardiography examinations. No early beats, bundle branch block, or any rhythm disturbances were observed. On TTE examination, only one patient had a left ventricle ejection fraction (LVEF) below the normal limits (LVEF: 47%).
LVFT was observed in 31 (63.3%) of 49 CN patients. In the literature, the frequency of LVFT rate was found to be very variable (0.2%–78%) (Table 2). Among the existing studies, the ratio of LVFT was calculated as 22% in 15 studies that examined the frequency of LVFT by the two-dimensional TTE (Table 3). Hence, the frequency of LVFT in our study population was significantly higher than the average ratio of the literature studies (%63.3 versus 22%) (p = 0.01) (Table 4).
Thirty-one (63.3%) patients had an IASA. And, contrast echocardiography examination was positive in 22 (61.1%). As a result of the TEE examination of ten patients, ASD was observed in two patients and a PFO was observed in four patients. Also, cor triatriatum sinister was detected in one patient and membranous ventricular septal defect (VSD) in one patient. No relation was observed between the presence of LVFT and the frequency of IASA and positive echo-contrast examination (respectively p = 0.40, 0.09). Also, no association was found between echocardiographic parameters (aortic root diameter, left atrium diameter, right atrium diameter, right ventricular internal end-diastole diameter, interventricular septal end-diastole diameter, left ventricular posterior wall end-diastole diameter, left ventricular internal end-diastole diameter, left ventricular internal end-systole diameter, LVEF) and LVFT (respectively p = 0.50, 0.38, 0.13, 0.34, 0.70, 0.68, 0.28, 0.49, 0.90).
In terms of gender, male dominance (67.3%) was present. And the study population was generally young. Also, the mean body mass index was within the ideal limits. Our patient group had a percentage close to normal population rates in terms of chronic disease history (coronary artery disease, hypertension, dyslipidemia, diabetes mellitus, and thyroid dysfunction). Hence, the majority of patients in our study consisted of healthy individuals with no history of functional cardiac abnormalities. Exceptionally, smoking was found at a high rate (44.5%).
In autopsy studies, the ratio of CN was found to be 1.3–4% [26,27,28]. In TTE studies, the ratio ranges between 0.03 and 9.5% [29, 30]. Case limitation is the biggest problem in studies. Also, the reason for the ratio differences in the studies may be caused by the difference in the population included in the studies or the visual similarity between CN and the Eustachian valve . In our study, the incidence of CN was found to be 0.4%, consistent with the literature.
In studies, the frequency of LVFT was found within widely ratios (0.2%–78%) (Table 2) [31, 32]. Imaging quality, study plan (TTE, autopsy), selection of study population (child, adult), the difference in number and quality of TTE image windows, and the difference in the criteria used for LVFT definition may have caused this difference . In autopsy studies, where the current disadvantages were minimal, significantly higher LVFT rates could be detected rather than in TTE studies [33, 34]. In a study that aims to compare TTE and autopsy determination, LVFT was found in 18% of TTE examinations and 34% of autopsy examinations in the same population . In Keren et al.'s study, echocardiographic evaluation before and after cardiac transplantation and post-autopsy was compared in terms of detecting LVFT, and the sensitivity of the echocardiographic evaluation was 85% and the specificity was 82%. An increase in the frequency of LVFT was observed in new echocardiography studies. The underlying causes may be the emergence of new echocardiography methods and the improvement of the image quality of echocardiography devices. Hence, we evaluated CN patients in detail by three-dimensional TTE (Fig. 1, Additional file 1: Video 1).
In our study, the problem of including the LVFT image window was encountered, and it was tried to be determined with the help of modified and three-dimensional TTE images. In our population, multiple, complex LVFT structures could not be detected by a standard two-dimensional TTE view. Further examination with three-dimensional TTE revealed multiple, mesh-shaped, complex LVFT structures (Fig. 3). Among the existing 15 two-dimensional TTE studies, the ratio of LVFT was calculated only as 22% (Table 3). These results may have been less than the actual rates, because of limited examination of two-dimensional TTE. Compatibly, these rates were far less than our three-dimensional TTE evaluated LVFT ratios (63.3%). Three-dimensional TTE was more useful in detecting the LVFT than two-dimensional TTE.
Although the frequency of LVFT in our series detected was high, it may have been detected at a much lower rate than actually, it should have been. Conversely, our study population was young and had normal BMI and cardiac function. Thus, the appearance of the LVFT was facilitated by the good quality of the TTE images. In this respect, it would be more appropriate to evaluate similar studies in the autopsy series.
No relation was found between the frequency of LVFT and gender (p = 0.48). In the literature, the incidence of LVFT was higher in males [6, 7, 36]. The reason for no gender difference was observed in the frequency of LVFT in our study population with CN; it may be due to the small number of females enrolled in the study or the fact that insufficient image quality of females. Otherwise, our results are consistent with the Framingham Study (p = 0.99 for gender difference) .
In our study, no premature contractions were observed in the electrocardiography records of any patient with LVFT. However, ventricular premature beats have been found to be associated with LVFT in several studies [13, 36, 37]. The fact that we did not perform rhythm Holter monitoring prevents us from commenting on the frequency of arrhythmia in our study.
The ratio of LVFT in our population with CN (63.3%) was found to be significantly higher than the studies in the literature (22%) (Table 4) (p = 0.01). As a result, it was revealed that two cardiac variables such as CN and LVFT may be related in our study. Similarly, the association of LVFT with other cardiac pathologies has been shown in previous studies. No cardiac problems were detected in 23% of cases with LVFT .
Although it has been shown in the literature that LVFT is associated with infective endocarditis, mitral valve prolapse, mitral regurgitation, and even CN is associated with ASD, IASA, and PFO, these cardiac variant structures are ignored in the echocardiography examination for clinicians. Our study reveals the coexistence of two cardiac variants. Thus, it supports the possibility of the two structures accompanying other cardiac variant structures and suggests that they should be evaluated more carefully in the echocardiography examination as they can be in synergy in terms of the cardiac pathologies they accompany.
Since it is difficult to accumulate the number of cases in a single center for CN, which is a rare abnormality. Newly planned, multi-center studies with a high number of cases will be valuable.
Also, lower age and the predominance of the male gender are the limitations of the study.
Furthermore, ASD, PFO, and VSD ratios in our study may have been less than the actual rates. Because, we were able to perform TEE only on patients with positive contrast echocardiography, not on all the CN patients. And, we were able to perform TEE on only half of the patients with positive contrast echocardiography, because of the failure to obtain a consent form. Therefore, VSD, PFO, or ASD could not be evaluated in all CN patients.
The presence of CN increases the probability of coexistence of LVFT in relevant patients compared to the normal population. And also, cardiac anomalies like an ASD and IASA are frequently associated with CN. CN patients need to be examined in detail. LVFT can be evaluated better with three-dimensional TTE than with traditional two-dimensional TTE. And patients with CN should be evaluated more carefully by three-dimensional echocardiography as they can be in synergy in terms of the cardiac pathologies they accompany. With the frequent use of echocardiography, the development of new echocardiography devices and imaging techniques, LVFT anatomy, CN structure, and their relationship with other cardiac structures will be better demonstrated.
Availability of data and materials
All data analyzed during this study are included in this article. And all data are available on request at the archive of the Department of Cardiology University of Health Sciences Turkey, Sisli Hamidiye Etfal Training and Research Hospital, Information Management Database.
Atrial septal defect
Left ventricular false tendon
Interatrial septal aneurysm
Left ventricle ejection fraction
Patent foramen ovale
Ventricular septal defect
Chiari H (1897) Über Netzbildungen im rechten Vorhof des Herzens. Beitr Pathol Anat 22:1–10
Werner JA, Cheitlin MD, Gross BW, Speck SM, Ivey TD (1981) Echocardiographic appearance of the Chiari network: differentiation from right-heart pathology. Circulation 63(5):1104–1109
Savino K, Maiello M, Pelliccia F, Ambrosio G, Palmiero P (2016) Patent foramen ovale and cryptogenic stroke: from studies to clinical practice: position paper of the Italian chapter, international society cardiovascular ultrasound. Int J Clin Pract 70(8):641–648. https://doi.org/10.1111/ijcp.12842
Mousavi N, Bhagirath K, Ariyarajah V, Fang T, Ahmadie R, Lytwyn M, Jassal DS, Seifer C (2008) Chiari network endocarditis: not just an innocent bystander. Echocardiography 25(6):642–645. https://doi.org/10.1111/j.1540-8175.2008.00651.x
Aydin A, Gurol T, Yilmazer MS, Dagdeviren B (2011) Catheter entrapment around the Chiari network during percutaneous atrial septal defect closure. Anadolu Kardiyol Derg 11(2):E6-7. https://doi.org/10.5152/akd.2011.047
Turner W (1896) Another heart with moderator band in the left ventricle. J Anat Physiol 1896(30):568–5699
Luetmer PH, Edwards WD, Seward JB, Tajik AJ (1986) Incidence and distribution of left ventricular false tendons: an autopsy study of 483 normal human hearts. J Am Coll Cardiol 8(1):179–183
Darazs B, Taylor HR, van Gelder AL (1988) The relevance of left ventricular bands. S Afr Med J 74(2):68–71
Kervancioglu M, Ozbag D, Kervancioglu P, Hatipoglu ES, Kilinc M, Yilmaz F, Deniz M (2003) Echocardiographic and morphologic examination of left ventricular false tendons in human and animal hearts. Clin Anat 16(5):389–395. https://doi.org/10.1002/ca.10152
Kenchaiah S, Benjamin EJ, Evans JC, Aragam J, Vasan RS (2009) Epidemiology of left ventricular false tendons: clinical correlates in the Framingham heart study. J Am Soc Echocardiogr 22(6):739–745. https://doi.org/10.1016/j.echo.2009.03.008
Roberts WC (1969) Anomalous left ventricular band. An unemphasized cause of a precordial musical murmur. Am J Cardiol 23(5):735–738
Bhatt MR, Alfonso CE, Bhatt AM, Lee S, Ferreira AC, Salerno TA, de Marchena E (2009) Effects and mechanisms of left ventricular false tendons on functional mitral regurgitation in patients with severe cardiomyopathy. J Thorac Cardiovasc Surg 138(5):1123–1128. https://doi.org/10.1016/j.jtcvs.2008.10.056
Suwa M, Hirota Y, Kaku K, Yoneda Y, Nakayama A, Kawamura K, Doi K (1988) Prevalence of the coexistence of left ventricular false tendons and premature ventricular complexes in apparently healthy subjects: a prospective study in the general population. J Am Coll Cardiol 12(4):910–914
Thakur RK, Klein GJ, Sivaram CA, Zardini M, Schleinkofer DE, Nakagawa H, Yee R, Jackman WM (1996) Anatomic substrate for idiopathic left ventricular tachycardia. Circulation 93(3):497–501
Abouezzeddine O, Suleiman M, Buescher T, Kapa S, Friedman PA, Jahangir A, Mears JA, Ladewig DJ, Munger TM, Hammill SC, Packer DL, Asirvatham SJ (2010) Relevance of endocavitary structures in ablation procedures for ventricular tachycardia. J Cardiovasc Electrophysiol 21(3):245–254. https://doi.org/10.1111/j.1540-8167.2009.01621.x
Wang Q, Madhavan M, Viqar-Syed M, Asirvatham SJ (2014) Successful ablation of a narrow complex tachycardia arising from a left ventricular false tendon: mapping and optimizing energy delivery. Heart Rhythm 11(2):321–324. https://doi.org/10.1016/j.hrthm.2013.11.004
Nakagawa M, Ezaki K, Miyazaki H, Ebata Y, Shinohara T, Teshima Y, Yufu K, Takahashi N, Saikawa T (2014) False tendons may be associated with the genesis of J-waves: prospective study in young healthy male. Int J Cardiol 172(2):428–433. https://doi.org/10.1016/j.ijcard.2014.01.101
Aksakal E, Sevimli S, Gurlertop Y, Tas H (2010) An intracardiac mobile mass: ruptured left-ventricular false tendon with big vegetation due to Brucella endocarditis. Anadolu Kardiyol Derg 10(6):557–558. https://doi.org/10.5152/akd.2010.172
Canale E, Fujiwara T, Campbell GR (1983) The demonstration of close nerve-Purkinje fibre contacts in false tendons of sheep heart. Cell Tissue Res 230(1):105–111
Dawood M, Elsharkawy E, Abdel-Hay MA, Nawar M (2021) Predictors of pacing induced left ventricular dysfunction and cardiomyopathy assessed by three-dimensional echocardiography and speckle tracking strain. Egypt Heart J 73(1):10. https://doi.org/10.1186/s43044-021-00136-x
Pothineni KR, Nanda NC, Burri MV, Singh A, Panwar SR, Gandhari S (2007) Live/real time three-dimensional transthoracic echocardiographic visualization of Chiari network. Echocardiography 24(9):995–997. https://doi.org/10.1111/j.1540-8175.2007.00503.x
Pushparajah K, Barlow A, Tran VH, Miller OI, Zidere V, Vaidyanathan B, Simpson JM (2013) A systematic three-dimensional echocardiographic approach to assist surgical planning in double outlet right ventricle. Echocardiography 30(2):234–238. https://doi.org/10.1111/echo.12037
Simpson JM, van den Bosch A (2019) Educational series in congenital heart disease: three-dimensional echocardiography in congenital heart disease. Echo Res Pract 6(2):R75–R86. https://doi.org/10.1530/ERP-18-0074
Lang RM, Bierig M, Devereux RB, Flachskampf FA, Foster E, Pellikka PA, Picard MH, Roman MJ, Seward J, Shanewise J, Solomon S, Spencer KT, St John Sutton M, Stewart W (2006) Recommendations for chamber quantification. Eur J Echocardiogr 7(2):79–108. https://doi.org/10.1016/j.euje.2005.12.014
Keren A, Billingham ME, Popp RL (1984) Echocardiographic recognition and implications of ventricular hypertrophic trabeculations and aberrant bands. Circulation 70(5):836–842
Helwig FC (1932) The frequency of anomalous reticula in the right atrium of the human heart “Chiari network”: report of eight cases. Am J Pathol 8(1):73
Yater WM (1929) Variations and anomalies of the venous valves of the right atrium of the human heart. Arch Pathol 7:418–441
Gresham GA (1957) Networks in the right side of the heart. Br Heart J 19(3):381–386
Zema MJ, Temkin ML, Caccavano M (1985) Echocardiographic appearance of the Chiari network. J Clin Ultrasound 13(9):671–674
Panidis IP, Kotler MN, Mintz GS, Ross J (1984) Clinical and echocardiographic features of right atrial masses. Am Heart J 107(4):745–758
Ryssing E, Egeblad H, Berning J (1984) False tendons in the left ventricular outflow tract. Clinical and echocardiographic manifestations. Dan Med Bull 31(1):59–62
Philip S, Cherian KM, Wu MH, Lue HC (2011) Left ventricular false tendons: echocardiographic, morphologic, and histopathologic studies and review of the literature. Pediatr Neonatol 52(5):279–286. https://doi.org/10.1016/j.pedneo.2011.06.007
Gerlis LM, Wright HM, Wilson N, Erzengin F, Dickinson DF (1984) Left ventricular bands. A normal anatomical feature. Br Heart J 52(6):641–647
Cocchieri M, Bardelli G (1992) False chordae tendineae. Minerva Cardioangiol 40(10):353–358
Abdulla AK, Frustaci A, Martinez JE, Florio RA, Somerville J, Olsen EG (1990) Echocardiography and pathology of left ventricular “false tendons.” Chest 98(1):129–132
Suwa M, Hirota Y, Nagao H, Kino M, Kawamura K (1984) Incidence of the coexistence of left ventricular false tendons and premature ventricular contractions in apparently healthy subjects. Circulation 70(5):793–798
Kuznetsov VA, Kuznetsova NI, Loginov OL, Osokin SA, Shalaev SV, Gizatulina TP (1992) Relationship between ventricular arrhythmias and left ventricular false tendons in acute myocardial infarction. Rev Port Cardiol 11(12):1125–1131
Malouf J, Gharzuddine W, Kutayli F (1986) A reappraisal of the prevalence and clinical importance of left ventricular false tendons in children and adults. Br Heart J 55(6):587–591
Okamoto M, Nagata S, Park YD, Masuda Y, Beppu S, Yutani C, Sakakibara H, Nimura Y (1981) Visualization of the false tendon in the left ventricle with echocardiography and its clinical significance (author’s transl). J Cardiogr 11(1):265–270
Nishimura T, Kondo M, Umadome H, Shimono Y (1981) Echocardiographic features of the false tendons in the left ventricle. Am J Cardiol 48(1):177–183
Perry LW, Ruckman RN, Shapiro SR, Kuehl KS, Galioto FM Jr, Scott LP 3rd (1983) Left ventricular false tendons in children: prevalence as detected by 2-dimensional echocardiography and clinical significance. Am J Cardiol 52(10):1264–1266
Sethuraman KR, Sriram R, Balachandar J (1984) Left ventricular false tendons: echocardiographic incidence in India and clinical importance. Int J Cardiol 6(3):385–387
Vered Z, Meltzer RS, Benjamin P, Motro M, Neufeld HN (1984) Prevalence and significance of false tendons in the left ventricle as determined by echocardiography. Am J Cardiol 53(2):330–332
Brenner JI, Baker K, Ringel RE, Berman MA (1984) Echocardiographic evidence of left ventricular bands in infants and children. J Am Coll Cardiol 3(6):1515–1520
Casta A, Wolf WJ (1986) Left ventricular bands (false tendons): echocardiographic and angiocardiographic delineation in children. Am Heart J 111(2):321–324
Boyd MT, Seward JB, Tajik AJ, Edwards WD (1987) Frequency and location of prominent left ventricular trabeculations at autopsy in 474 normal human hearts: implications for evaluation of mural thrombi by two-dimensional echocardiography. J Am Coll Cardiol 9(2):323–326
To all the members of the Cardiology Department at Sisli Hamidiye Etfal Hospital for their efforts in managing the cases.
No funds, grants, or other support were received. The authors have no relevant financial or non-financial interests to disclose.
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The subjects were informed in detail about the purpose of the study, and written consent was obtained from them that they accepted the study. The compliance of the study with the Helsinki Declaration was approved by Sisli Hamidiye Etfal Training and Research Hospital Clinical Research Ethics Committee (number: 323).
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Sumerkan, M.C., Cetin, S., Helvaci, F.B. et al. Three-dimensional echocardiographic assessment of Chiari’s network relationship with the left ventricular false tendon. Egypt Heart J 74, 49 (2022). https://doi.org/10.1186/s43044-022-00287-5
- Chiari’s network
- Three-Dimensional echocardiography
- False tendon