Prophylactic administration of an anticholinergic medication should be considered in patients deemed at risk of high-degree heart block, or paravertebral nerve blocks can be chosen in place of a thoracic epidural in order to minimize sympathetic blockade. Cardiac monitoring during and after epidural ...
Four foals in which advanced heart block developed during anesthesia were unresponsive to atropine sulfate and supportive treatment alone. Resolution of the heart blocks was achieved after the addition of dopamine hydrochloride to the therapeutic regimen....
Bundle Branch Blocks Left Bundle Branch Block This is rare in monkeys but has been seen in drug toxicity studies (Fig. 8.13). It is characterized by R waves (taller than the normal R wave) and a wide (greater than 0.05 s/50 ms) QRS complex. Sign in to download full...
Arrhythmias can be classified as excitability disturbances characterized by either increases or decreases in excitability (impulse formation) or as conduction disturbances characterized by impaired impulse transmission (blocks). Blocks are further characterized by anatomic location (SA node, AV node, bundle ...
Bypass surgery treats symptoms of coronary artery disease. That happens when a waxy substance called plaque builds up inside the arteries in your heart and blocks blood and oxygen from reaching it. Your doctor may suggest heart bypass surgery if: ...
通道注意力和空间注意力被引入到残差通道与空间注意力模块(residual channel and spatial attention blocks, RCSAB)中, 增强了网络对高频信息的学习能力, 得到的超分辨图像质量有明显的提升. 和基于拟合的方法及基于学习的方法相比, 其他方法在图像放大中也起着重要作用. 分形是描述图像边缘和纹理的有效技术. Xu ...
RSNA, HR, and M A B P were sampled at a frequency of 4 H z and the values averaged by 5-min blocks over a 4-h period. Linear regression analysis demonstrated a positive correlation between RSNA five fetuses ( p < 0.02). In and both a second HR and group of MABP fetuses i(nna...
Each hospital course was divided into 6-h blocks beginning at midnight (n ϭ 41,769), and the HRC index and clinical score were noted for each block. Healthcare personnel were not aware of the result of the HRC monitoring. The HRC index reflects the degree of reduced variability and ...
walking more than two blocks on the level and climbing more than one flight of ordinary stairs at a normal pace and in normal conditions.Patients can perform to completion any activity requiring ≤5 METs)—e.g., have sexual intercourse without stopping, garden, rake, weed, roller skate, danc...
(i.e., VA block). The AES can also anterogradely penetrate the AV BT and collide with the retrogradely conducting SVT wavefront (VA block). Lastly, the AES can conduct down the AVN-HPS and advance the next QRS, which then blocks in the still-refractory AV BT or atrium (VA block)....