| nodal bradycardia | The cardiac rhythm when the heart is controlled by the A-V junction (including node); arising in the A-V junction, the impulse ascends to the atria and descends to the ventricles, each at varying speeds depending on site of the pacemaker. Synonym: A-V junctional rhythm, nodal bradycardia, nodal rhythm. (05 Mar 2000) |
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| bradycardia | <clinical sign> A slowness of the heart beat, as evidenced by slowing of the pulse rate to less than 60 beats per minute. Origin: Gr. Kardia = heart (18 Nov 1997) |
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| vagal bradycardia | Any excessive cardiac slowing due to stimulation of the vagus nerves. (05 Mar 2000) |
| ventricular bradycardia | Slowness of ventricular rate, usually implying the presence of atrioventricular block. (05 Mar 2000) |
| marked foetal bradycardia | A foetal heart rate less than 100 beats per minute. (05 Mar 2000) |
| central bradycardia | Bradycardia due to disease of the central nervous system, usually with increased intracranial pressure. (05 Mar 2000) |
| mild foetal bradycardia | A foetal heart rate less than 120 beats per minute. (05 Mar 2000) |
| postinfectious bradycardia | A toxic bradycardia occurring during convalescence from various infectious diseases, such as influenza. (05 Mar 2000) |
| sinus bradycardia | <cardiology, physiology> Bradycardia originating in the normal sinus pacemaker. (05 Mar 2000) |
| idiopathic bradycardia | A slow pulse for which no cause can be discovered. Synonym: idiopathic bradycardia. (05 Mar 2000) |
| tachycardia-bradycardia syndrome | <syndrome> A disorder consisting of abnormalities of supraventricular impulse generation and conduction which produce a wide variety of intermittent rapid and slow supraventricular arrhythmias. Common symptoms include palpitations, faintness and fainting. Diagnosis is generally by 24 hour cardiac monitoring. A permanent pacemaker is indicated for those who are unresponsive to drug therapy. (27 Sep 1997) |
| essential bradycardia | A slow pulse for which no cause can be discovered. Synonym: idiopathic bradycardia. (05 Mar 2000) |
| foetal bradycardia | A foetal heart rate of less than 100 beats per minute. (05 Mar 2000) |
| atrioventricular nodal branch | The atrioventricular branches or the nodal branches, the small arteries supplying the atrioventricular node; they usually arise from the right coronary artery where it starts to descend the posterior interventricular sulcus. Synonym: ramus nodi atrioventricularis, atrioventricular nodal branch, branch to atrioventricular node. (05 Mar 2000) |
| atrioventricular nodal extrasystole | A premature beat arising from the A-V junction and leading to a simultaneous or almost simultaneous contraction of atria and ventricles. (05 Mar 2000) |
| coronary nodal rhythm | Formerly applied by some authorities to the electrocardiographic pattern of normal upright P waves in leads I and II with a short P-R interval. (05 Mar 2000) |