Analysis of the waking EEG of a newborn infant indicates that delta wave activity is predominant in that age, and still appears in a waking EEG of five-year-olds. Delta wave activity during slow-wave sleep declines during adolescence, with a drop of around 25% reported between the ages of 11 and 14 years.
Angina-or angina pectoris (Latin for squeezing of the chest) - is chest pain, discomfort, or tightness that occurs when an area of the heart muscle is receiving decreased blood oxygen supply. It is not a disease itself, but rather a symptom of coronary artery disease, the most common type of heart disease.ngina is most frequently the result of underlying coronary artery disease. The coronary arteries supply the heart with oxygen rich blood. When cholesterol aggregates on the artery wall and hard plaques form, the artery narrows.
Pathophysiology. Intestinal ischemia results from the imbalance of oxygen supply to and oxygen consumption by the gastrointestinal tract. Diminished blood flow results from narrowing of the mesenteric vessels. The most common cause of abdominal angina is atherosclerotic vascular disease.It commonly involves the ostia of the mesenteric vessels. The 3 arteries supplying the gut are the celiac, superior mesenteric, and inferior mesenteric, as shown below.chnitzler first described the clinical picture of postprandial pain in 1901. However, the true description of postprandial abdominal angina is attributed to Baccelli or Goodman (1918). In 1957, Mikkelsen proposed surgical treatment of occlusive mesenteric vascular disease.