Mammals, reptiles, fish, and all other vertebrates have some form of circulatory system. However, the metabolic demands of sustained flight have created an especially powerful and efficient heart and ...

Doz. Dr. Sören Brandenburg have identified a protein that plays a central role in the heart's adaptation to increased stress. The results of the study were published in Circulation Research.

Conduction time from atrium to the His bundle (A-H time ... Bundle of His pacing was used to establish a His bundle rhythm in a patient with complete heart block localized within the His bundle. BH ...

Congenital defects can affect the heart's muscle, chambers, valves, and blood vessels. Muscle tissue that pumps blood Blood vessels that transport blood to the heart Electrical system that tells the ...

These activities require an advanced respiratory system to oxygenate their blood and an efficient circulatory system to distribute it to the muscles, organs, and tissues where it’s needed. Like us, ...

Introduction: Electronic cigarettes (e-cig) have been promoted as nicotine (NIC) delivery systems without the adverse effects of tobacco cigarettes; however, the increasing popularity of EC has ...

Circadian variation was normal in patients with diabetes mellitus. CONCLUSION We have identified a circadian rhythm of heart rate and HRV in infants and children. Our data confirm a progressive ...

A new meta-analysis of randomized controlled trials of inhibitors of the renin–angiotensin system highlights the ... thromboembolism and heart failure, and its clinical importance have led ...

All blood vessels are specifically structured to perform their function. For example, a capillary is microscopically thin to allow gases to exchange, the arteries are tough and flexible to cope ...