scholarly journals M-mode Diagnosis of Tachyarrhythmia Can be Erroneous Owing to “Pseudo 1:1 Atrioventricular Movement” of the Atrial Wall Adjacent to the Atrioventricular Valve Possibly due to Atrioventricular Constraint: A Case of Neonatal Atrial Flutter With 2:1 Atrioventricular Conduction

2018 ◽  
Vol 12 ◽  
pp. 117954681877170
Author(s):  
Akiko Kawano ◽  
Ayumi Oshima ◽  
Satoshi Masutani ◽  
Akio Ishiguro ◽  
Yoichi Iwamoto ◽  
...  
Keyword(s):  
Atrial Flutter ◽  
Atrioventricular Conduction ◽  
Ventricular Wall ◽  
Atrioventricular Valve ◽  
Atrial Wall ◽  
Fetal Tachyarrhythmia

M-mode echocardiography has been playing an important role in the diagnosis of fetal tachyarrhythmia. We recently encountered a neonatal case of atrial flutter with 2:1 atrioventricular conduction. However, M-mode erroneously indicated 1:1 atrioventricular movement. While the movement of the atrial wall far from the atrioventricular valve was much faster than that of the ventricular wall, the atrial wall adjacent to the atrioventricular valve fully synchronized to that of the ventricular wall. Thus, to avoid this novel pitfall, it would be important to add an additional assessment focusing on the movement of the atrial wall far from the ventricle.

Significance of left ventricular wall stress in infants with atrioventricular septal defect, common atrioventricular orifice and regurgitation across the left atrioventricular valve

1991 ◽  
Vol 1 (4) ◽  
pp. 390-395
Author(s):  
Masahi Seguchi ◽  
Makoto Nakazawa ◽  
Kataro Oyama ◽  
Masa-aki Kawada ◽  
Hiromi Kurosawa ◽  
...  
Keyword(s):  
Septal Defect ◽  
Primary Repair ◽  
Wall Stress ◽  
Ventricular Volume ◽  
Atrioventricular Septal Defect ◽  
Left Ventricular ◽  
Ventricular Wall ◽  
Atrioventricular Valve ◽  
Left Heart Failure ◽  
Young Infants

SummaryThe outcome of primary repair in young infants having atrioventricular septal defect with a common atrioventricular orifice and regurgitation across the left atrioventricular valve is not yet satisfactory. We studied the significance of the characteristics of left ventricular volume and mass and the predicted wall stress for the outcome of repair in 13 infants with this lesion. Three patients died of left heart failure after operation, although neither residual shunting at ventricular level nor regurgitation across the left atrioventricular valve was present. End-diastolic volume and ejection fraction of the left ventricle were 228 ±66% and 0.65 ±0.06 of normal, respectively, with no difference between the survivors and non-survivors. End-diastolic thickness of the posterior ventricular wall, determined by echocardiogram, was within normal range for body size in all patients.

Congenitally corrected transposition with atrioventricular septal defect

1998 ◽  
Vol 8 (4) ◽  
pp. 472-478 ◽  
Author(s):  
Fause Attie ◽  
Pedro Iturralde ◽  
Carlos Zabal ◽  
Maria Rijlaarsdam ◽  
Alfonso Buendia ◽  
...  
Keyword(s):  
Septal Defect ◽  
Atrioventricular Septal Defect ◽  
Atrioventricular Conduction ◽  
Atrioventricular Valve ◽  
His Bundle ◽  
Electrophysiological Studies ◽  
Congenitally Corrected Transposition ◽  
Atrial Stimulation ◽  
Common Atrioventricular Valve ◽  
Corrected Transposition

AbstractWe describe 4 cases of congenitally corrected transposition associated with atrioventricular septal defect, diagnosed by echocardiography and angiocardiography. Two had usual atrial arrangement and two had mirror imaged atrial arrangement. All cases were associated with subpulmonary valvar stenosis. All patients presented with cyanosis and were in sinus rhythm. Atrioventricular septal defect with common atrioventricular junction was easily diagnosed on the basis of a common atrioventricular valve permitting interatrial and interventricular communications. All patients had balanced right and left ventricles. The echocardiographic recognition of the ventricles was based on the presence of the moderator band within the morphologically right ventricle, the characteristics of the apical septal trabeculations, and the shape of the ventricles. Angiocardiographic recognition of the ventricles was achieved on the basis of right and left ven-triculography.In one case with usual atrial arrangement, we recorded two His bundle potentials, one anteriorly and another posteriorly. Atrial stimulation revealed blocked atrioventricular conduction at the level of the pos terior bundle, and normal atrioventricular conduction through the anterior bundle. In both cases with atrial mirror-imagery, only a posterior His bundle potential was found, with normal atrioventricular conduction revealed by atrial stimulationThe clinical course with this combination depends on the other lesions present in addition to the common atrioventricular valve. Our electrophysiological studies show that the conduction system in presence of a common atrioventricular valve is as expected for congenitally corrected transposition with two atrioventric ular valves.

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