NURS 6751

A b n o r m a l i ti e s o f C a r d i a c C o n d u c ti o n & R hy t h m • Normal Conduction o Sinoatrial node o Atrioventricular node ▪ Little hiccup of time here ▪ Insulator part that prevents conduction going from anywhere other than the AV node o Bundle of His ▪ Right bundle ▪ Left bundle o Purkinje fiber network • Sinoatrial Node (SA) o Pacemaker (60 – 100 BPM) o Sympathetic & parasympathetic innervation ▪ Primarily sympathetic innervation, but there is a good amount of pa...

Valvular Heart Disease • Valvular Heart Disease o Occurrence & survival have improved because ▪ Better diagnostic techniques • The prevalence of valvular heart disease in the United States i s currently around 2.5% and is expected to increase significantly with the aging of the population. This form of heart disease continues to be an important cause of perioperative morbidity and mortality. In the past 25 years there have been major advances in understanding the natural history of valvula...