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At least 181 records · Page 10Linked to original sources

PubMed1980

[Results of surgical treatment of various vessel diseases. 2. Peripheral vessel diseases (author's transl)].

Eight hundred and eighty-three patients of peripheral vessel diseases have been experienced during the last 18 years at the Second Department of Surgery, Hokkaido University Hospital. Those cases consisted of 52 arteriovenous fistulae, 26 arterial injuries, 41 peripheral aneurysms, 403 acute and chronic arterial occlusions, and 336 peripheral venous diseases. The results of surgical treatment of those cases were reviewed. Although the operative results of most diseases are quite satisfactory, careful evaluations or prompt surgical interventions are emphasized in treatment of arteriovenous fistula, arterial injuries, and arterial occlusions.

Adolescent↗

PubMed1993

[Hemodilution tolerance in coronary heart disease: single vessel versus multiple vessel disease].

Isovolemic hemodilution is well tolerated in experimental models of single vessel coronary artery disease. Little information, however, is available on the hemodilution tolerance in presence of multivessel coronary artery disease. 42 dogs were anesthetized and instrumented to determine global cardiovascular and regional myocardial functions (systolic shortening, SS) in the anterior apical LV territory supplied by the left anterior descending coronary artery (LAD) as well as in the posterior apical LV wall supplied by the circumflex coronary artery (LC) using sonomicrometry. Critical coronary stenoses were imposed on the proximal LAD and LC according to the experimental group assignment and group 1V-HD (LC stenosis only) and group 2V-HD (LC and LAD stenoses) were then progressively hemodiluted using Dextran 70,000. 1000 ml blood per hour was thereby continuously exchanged with 900 ml Dextran until the animal expired or 120 minutes were reached. 12 dogs (LAD and LC stenoses) served as controls (2V-C). All groups started with similar hemoglobin values and these decreased similarly in both hemodiluted groups. Myocardial contractile function in the LC territory failed similarly in the 1V-HD and 2V-HD groups during progressive hemodilution. The LAD myocardium, however, responded markedly different in the 2V-HD as compared to the 1V-HD group: In the 2V-HD group, SSLAD started to decrease shortly into hemodilution, whereas SSLAD progressively increased during the first 60 min of continuous hemodilution in the 1V-HD group. The presence of non-compromised LV myocardium with the ability of a compensatory increase in contractile function thus seems to crucial for the hemodilution tolerance in the setting of coronary artery disease.

Animals↗

PubMedDate not supplied

Comparison of closed-vessel and focused open-vessel microwave dissolution for determination of cadmium, copper, lead, and selenium in wheat, wheat products, corn bran, and rice flour by transverse-heated graphite furnace atomic absorption spectrometry.

A method is described for the determination of Pb, Cd, Cu, and Se in cereal samples. An atomic absorption spectrometer equipped with a transverse-heated graphite furnace with Zeeman background correction was used for all determinations. Sample preparation was performed by closed-vessel microwave digestion using nitric acid and focused openvessel microwave digestion using nitric acid-hydrogen peroxide. Both techniques were evaluated by using 15 cereal reference materials and comparing results with certified or reference values for each element. Cereal reference standards obtained from the Community Bureau of Reference (Europe), the National Institute of Standards and Technology (USA), the National Institute for Environmental Studies (Japan), the National Research Centre for Certified Reference Materials (People's Republic of China), and the Canadian Grain Commission were used. Application of a series of t-tests, conducted according to Sidak's modified Bonerroni t-procedure, showed that both techniques yielded accurate results for cereal reference materials. Some differences from certified and reference values, however, were found for each element.

Bread↗

PubMedDate not supplied

Advantages of dual-lumen umbilical vessel catheters versus single-lumen umbilical vessel catheters and additional peripheral intravenous catheters.

Once the decision to place an umbilical venous catheter has been made, the opportunity to provide some relief to the patient clinically as well as fiscally is possible with the use of a dual-lumen umbilical vessel catheter (UVC). Although the necessity of catheterization of the umbilical vein remains controversial, successful completion of this procedure provides the practitioner immediate access to the venous circulation of a newborn and allows administration of various solutions and blood products. The cost of a dual-lumen UVC was compared with a single-lumen UVC used in conjunction with peripheral intravenous catheters. By limiting the number of peripheral intravenous catheterization attempts, these patients are spared the pain and possible sequelae associated with wide fluctuations in blood pressure, heart rate, and oxygenation. Once a patient requires more than two peripheral intravenous catheterization attempts, the cost savings of a dual-lumen UVC becomes evident and is amplified with each successive peripheral catheterization attempt.

Catheterization, Peripheral↗

PubMedDate not supplied