[Show abstract][Hide abstract] ABSTRACT: In a prospective study design, we sought to assess the effect of dipyridamole on coronary flow parameters in patients with isolated coronary artery ectasia (CAE) as compared to subjects with normal coronaries.
We enrolled 30 patients with ectasia of the left anterior descending (LAD) artery (study group), and 10 subjects with normal coronaries (control group). All subjects underwent transesophageal echocardiography to record flow velocities in the proximal LAD coronary artery, and velocity time integrals were calculated. The diameter of the proximal LAD coronary artery was measured and flow was calculated. Dipyridamole (0.56 mg/kg) was administered intravenously and measurements were repeated 5 minutes later.
At baseline, systolic and diastolic velocities, systolic, diastolic, and total velocity time integrals were significantly higher in the control group (P < 0.05 for all), yet, systolic, diastolic, and total coronary flow were significantly higher in the study group (P < 0.05 for all). Following dipyridamole administration, systolic, diastolic, and total coronary flow were still significantly higher in the study group (P < 0.05 for all), yet, there was no significant difference between the two groups regarding the other parameters, and regarding coronary reserve values (P > 0.05 for all).
We concluded that patients with isolated CAE have a higher resting coronary flow as compared to control subjects with normal coronaries. Intravenous dipyridamole administration in these patients maintained a significantly higher coronary flow, with a coronary flow reserve similar to controls.
[Show abstract][Hide abstract] ABSTRACT: Infrared, conductivity and Seebeck coefficient have been studied for some bis-azodye complexes. It has been established that the complexes investigated are electronic conductors and that they have an exponential temperature dependence similar to that of normal semiconductors. The conductivity data obtained are interpreted on the basis of the band theory.
[Show abstract][Hide abstract] ABSTRACT: Aim: Repair of the abdominal aorta is a major procedure that has a considerable morbidity and mortality. Efforts are exerted to reduce this operative risk, one of which is the surgical approach of the Aorta. This study was carried out to evaluate the retroperitoneal approach regarding morbidity and mortality during the operation and for 30 days afterward and to evaluate the accessibility of this approach while the patient in supine. Methods: Nineteen patients with a mean age of 65.5 years were admitted for the repair of Abdominal Aorta between March 2004 and March 2006. To repair the Aorta of these patients it was approached retroperitonealy, using the standard technique with modification of the patient's position. Operative and post-operative data were measured and compared to the literature. Results: Mean operative time, intra-operative fluid replacement and ICU stays were less compared to the transperitoneal approach. Normal intestinal sounds were regained after 2 days in most of the patients. Mean hospital stay was 6.7 days with no mortality. Conclusion: This study supports that retroperitoneal approach has early morbidity and mortality that is comparable to the accepted rate of complications in literatures. This approach provides a convenient exposure to treat different anatomical lesion of the distal Aorta and iliac arteries, when we operate with the patient in the neutrally supine position.
[Show abstract][Hide abstract] ABSTRACT: Throwing competition is considered one of the field events in athletics, where the competitors aim is to achieve the greatest horizontal distance. Each stage of the movement stages has great importance in achieving the motor outcome, the athletics international regulations verifies that the throwing circle diameter is 2.50 meters, where the player performs a turn and a half. When developing the record level the world is directed to develop the physical fitness level or reaches the technical performance mechanism, therefore the progress in the record level is slow due to the close level of fitness among the players in all countries. The researcher endeavored to simulate the evolution of the record level through introducing Novelty technical performance to the throwing discus competition where the record level could be developed in a manner which depends less on the progress of the physical fitness level and mechanically increase the level of skill performance to increase the record level and in the same time does not conflict with the competition's regulations, represented in linking between the hammer turn and the discus turn as a Novelty technical performance. The descriptive method was used on a sample of one compound player.