منابع مشابه
Primary Cardiac Lymphoma Presenting With Atrioventricular Block
Primary cardiac lymphomas (PCL) are extremely rare. Clinical manifestations may be variable and are attributed to location. Here, we report on a case of PCL presenting with atrioventricular (AV) block. A 55 year-old male had experienced chest discomfort with unexplained dyspnea and night sweating. His initial electrocardiogram (ECG) revealed a first degree AV block. Along with worsening chest d...
متن کاملPrimary Cardiac Lymphoma with Complete Atrioventricular Block
Cardiac symptoms as an initial presentation of malignant lymphoma are rarely seen. We report a 42-year-old male patient of primary cardiac lymphoma originating in the left atrium with episodes of syncope. Complete atrioventricular (AV) block was found by electrocardiography, and the patient was admitted for pacemaker implantation. Before permanent pacemaker implantation, transthoracic echocardi...
متن کاملLidocaine Block of Cardiac Sodium Channels
I N T R O D U C T I O N Lidocaine is effective as an an t i a r rhy thmic agent in the heart over a concent ra t ion range of 5-20 ~ M (Gianelly et al., 1967; Jewi t t et al., 1968; Bellet et al., 1971). Unlike its local anesthet ic effect on nerve, which clearly involves block of Na channels at m u c h higher (>100 /~M) drug concentrat ions (Schmid tmayer and Ulbricht , 1980; Cour tney , 1981;...
متن کاملLidocaine block of cardiac sodium channels
Lidocaine block of cardiac sodium channels was studied in voltage-clamped rabbit purkinje fibers at drug concentrations ranging from 1 mM down to effective antiarrhythmic doses (5-20 muM). Dose-response curves indicated that lidocaine blocks the channel by binding one-to-one, with a voltage-dependent K(d). The half-blocking concentration varied from more than 300 muM, at a negative holding pote...
متن کاملRight bundle branch block and cardiac infarction.
It is the object of this paper to investigate the modifications of the electrocardiographic pattern of cardiac infarction caused by the simultaneous presence of right bundle branch block, and to describe the cardiographic signs on which the diagnosis of infarction can be made in the presence. of right branch block. The cardiogram of right branch block shows added changes characteristic of infar...
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ژورنال
عنوان ژورنال: The Journal of Nervous and Mental Disease
سال: 1921
ISSN: 0022-3018
DOI: 10.1097/00005053-192110000-00015