Regular rhythms include normal sinus rhythm, AV nodal and junctional rhythms, firstヾegree AV block, accelerated idioventricular rhythm, and atrial flutter, which may be regular or irregular. The normal resting rate of depolarization of the sinus node in adults is 72bpm. Junctional rhythms ...
Ectopic rhythm, which happens when the electrical impulse does not start from thesinoatrial node. Ectopic rythms can be further divided in atrial rhythms (which cause the P wave to be shaped differently),junctional rhythms(in this case the P wave may disappear or become negative) and ventricular...
Her ECG revealed a junctional rhythm at a rate of 30 beats/min and a digitalis effect on the ST segments. After empiric therapy with 10 vials of ... F Barrueto,SA Jortani,R Valdes,... - 《Annals of Emergency Medicine》 被引量: 19发表: 2003年 Comparative study of the cardiac and ...
Preload, heart rate, and rhythm should be optimized. A heart rate of 80 to 100 beats per minute, using pacing if necessary, is appropriate for most patients. Inotropic support should then be commenced and titrated to effect. The choice of drug depends on the hemodynamic state. If cardiac ou...
Blockade of brain stem gap junctions increases phrenic burst frequency and reduces phrenic burst synchronization in adult rat Recent investigations have examined the influence of gap junctional communication on generation and modulation of respiratory rhythm and inspiratory motone... Solomon, IC,Chon, KH,...
The heart acts as a pump and maintains circulation of the blood by alternate concentration and relaxation of cardiac muscle (the myocardium). It generally contracts at a rate of 70 to 75 beats/minute in a healthy 70-kg person at rest. The normal heart rhythm, known as sinus rhythm, origin...
The minimum HR showed sinus rhythm in most cases (sinus rhythm, n = 68 [97%]; junctional rhythm, n = 2 [3%]). The minimum HR occurred during sleep- ing (n = 56 [80%]), eating (n = 4 [6%]), or unspecified activity (n = 10 [14%]). The maximum HR...
Accentuated antagonism of vagal heart rate control and less potent prejunctional inhibition of vagal acetylcholine release during sympathetic nerve stimulation in... T Kawada,T Sonobe,Y Hayama,... - 《Autonomic Neuroscience Basic & Clinical》 被引量: 0发表: 2019年 Accentuated vagal antagonism of be...
Although these summary techniques arc valuable for demonstrating particular trends ovcr timc, characteristics of mo- ment-to-moment changcs in hcart ratc can yield additional in- formation on the nature of cardiac rhythm. Assessment of beat- to-beat changes requires the use of specialized ...
of blood pressure rhythm based on a baroreflex model of first-order differential-delay equation17; the analysis of the influence of time delay in the baroreflex control of the heart activity by using a short-term pressure regulation model18; the description of a number of important features of ...