Growing older results in the various changes in the anatomy and physiology of human cardiovascular system. This affects in both healthy patients and patients with hypertension. The heart gets a less powerful pump, and needs to bring more to do the same job. (more…)
First the blood vessels. The walls of the arteries stiffen with age. And the largest blood vessel in the body, the aorta, gets long ...
In older patients without apparent cardiovascular disease, the number of cardiac myocytes declines, while residual myocytes enlarge ...
Carotid sinus hypersensitivity ( more than 3-second pause or a decrease in systolic blood pressure = 50 mm Hg during carotid sinus ...
With heart disease risk being the number one cause of death among older Americans, you should pay particular attention to known ...
Neurocardiogenic Vasovagal syncope is more common in younger patients but also should be considered in elderly patients with unexpl ...
The accumulative waste theory of aging, also known as the waste accumulation or garbage accumulation theory of aging, proposes that molecules damaged by oxidation and their by products (e.g., aged collagen, damaged enzymes), and damaged mitochondria (organelles responsible for cellular energy production) accumulate in postmitotic (non dividing cells) causing dysfunction, toxicity, aging, and cell death (see Error Catastrophe Theory of Aging).
There are several mechanisms by which garbage accumulation affects cells. (more…)
Aging theories cover the physiological, genetic, biochemical properties of a typical organism, and the way these properties cha ...
A number of global changes occur in the human nervous system with age. These changes affect the Autonomic Nervous System as well as ...
Reactive radicals of nitrogen (nitric oxide and derivatives such as peroxynitrite) and of oxygen (superoxide anion, hydrogen peroxi ...
The largest single risk factor for developing cancer is age. The incidence of cancer increases exponentially with age, although ...
Aging theories cover the biochemical, genetic, and physiological properties of a typical organism, and the way these propertie ...