TY - JOUR
T1 - Relationship between basal thinning of the interventricular septum and atrioventricular block in patients with cardiac sarcoidosis
AU - Uemura, Akihisa
AU - Morimoto, Shin Ichiro
AU - Kato, Yasuchika
AU - Hiramitsu, Shinya
AU - Ohtsuki, Masatsugu
AU - Kato, Shigeru
AU - Sugiura, Atsushi
AU - Miyagishima, Kenji
AU - Iwase, Masatsugu
AU - Hishida, Hitoshi
PY - 2005/3
Y1 - 2005/3
N2 - Background: Basal thinning of the interventricular septum (IVS) and atrioventricular block (AVB) are characteristic features of cardiac sarcoidosis. Since the conduction system passes along IVS, it has been considered that a close connection exists between basal thinning of IVS and AVB. However, neither the incidence of cases showing basal thinning of IVS nor the relation between it and AVB has been clarified. We thus investigated to elucidate these two issues. Methods: Thirty-five patients with cardiac sarcoidosis were selected for this study and underwent echocardiographic examination. The wall thickness of IVS was measured at a site 1 cm below the aortic valve inserted point of IVS. Thickness of this site ≤ 5 mm was defined as thinning. Twelve-lead and Holler electrocardiograms were obtained to determine the presence/absence and degree of AVB. Results: Basal thinning of IVS was noted in 7 of the 35 patients (20%). AVB was present in 4 of these 7 (57%), and was first degree in 3 (43%) and third degree in one (14%). AVB was not present in 3 patients. Basal thinning of IVS was not apparent in 28 of the 35 patients (80%). AVB was observed in 14 of the 28 patients, 3 had first degree block, 2 had second degree block, and 9 had third degree block. AVB was not observed in 14 of the 28 patients. Conclusions: These results clarified that basal thinning of IVS is not as common as previously thought in cardiac sarcoidosis, basal thinning of IVS and the presence/absence and degree of AVB are not necessarily correlated.
AB - Background: Basal thinning of the interventricular septum (IVS) and atrioventricular block (AVB) are characteristic features of cardiac sarcoidosis. Since the conduction system passes along IVS, it has been considered that a close connection exists between basal thinning of IVS and AVB. However, neither the incidence of cases showing basal thinning of IVS nor the relation between it and AVB has been clarified. We thus investigated to elucidate these two issues. Methods: Thirty-five patients with cardiac sarcoidosis were selected for this study and underwent echocardiographic examination. The wall thickness of IVS was measured at a site 1 cm below the aortic valve inserted point of IVS. Thickness of this site ≤ 5 mm was defined as thinning. Twelve-lead and Holler electrocardiograms were obtained to determine the presence/absence and degree of AVB. Results: Basal thinning of IVS was noted in 7 of the 35 patients (20%). AVB was present in 4 of these 7 (57%), and was first degree in 3 (43%) and third degree in one (14%). AVB was not present in 3 patients. Basal thinning of IVS was not apparent in 28 of the 35 patients (80%). AVB was observed in 14 of the 28 patients, 3 had first degree block, 2 had second degree block, and 9 had third degree block. AVB was not observed in 14 of the 28 patients. Conclusions: These results clarified that basal thinning of IVS is not as common as previously thought in cardiac sarcoidosis, basal thinning of IVS and the presence/absence and degree of AVB are not necessarily correlated.
KW - Atrioventricular block
KW - Cardiac sarcoidosis
KW - Interventricular septum
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M3 - Article
C2 - 15881282
AN - SCOPUS:20144386964
SN - 1124-0490
VL - 22
SP - 63
EP - 65
JO - Sarcoidosis Vasculitis and Diffuse Lung Diseases
JF - Sarcoidosis Vasculitis and Diffuse Lung Diseases
IS - 1
ER -