Sökning: "blood redistribution"

Visar resultat 11 - 15 av 44 avhandlingar innehållade orden blood redistribution.

  1. 11. Effect of body posture on regional ventilation and perfusion at normal and increased gravity

    Författare :Johan Petersson; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :;

    Sammanfattning : The prone position is increasingly used to improve arterial oxygenation in intensive care patients with severe acute respiratory failure. This beneficial response is well documented but our understanding of the responsible mechanisms remains incomplete, as does our knowledge of the effect of posture on lung function in healthy individuals. LÄS MER

  3. 12. Dynamic Fetal and Placental Circulatory Changes during Uterine Contractions

    Författare :Hui Li; Lund Obstetrik och gynekologi; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; sexualitet; reproduktion; andrologi; gynekologi; Obstetrik; sexuality; reproduction; andrology; gynaecology; Obstetrics; Venous; Uterine; Umbilical; Resistance; Pregnancy; Oxytocin; Labor; IUGR; Flow; Doppler; Contraction; Brain-sparing; Cerebral;

    Sammanfattning : The best mode of delivery for fetuses with intrauterine growth restriction (IUGR) and umbilical artery (UA) blood flow changes is not well elucidated. Uterine artery, fetal UA, middle cerebral artery (MCA), and venous blood flow changes during uterine contractions during an oxytocin challenge test (OCT) have not been observed systemically. LÄS MER

  4. 13. Optimising pulmonary gas exchange in anaesthetised horses : unravelling the role of pulsed inhaled nitric oxide using computed tomography angiography of the lung

    Författare :Adam Auckburally; Sveriges lantbruksuniversitet; Sveriges lantbruksuniversitet; []
    Nyckelord :LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES;

    Sammanfattning : Mortality rates in healthy, anaesthetised horses are higher than in most other species. Hypotension, hypoxaemia and hypoventilation are implicated as risk factors, which develop due to the combined effects of general anaesthesia and recumbency. Hypoxaemia is largely a consequence of ventilation perfusion (V̇ /Q̇ ) mismatch. LÄS MER

  5. 14. Microdialysis as a tool in pharmacokinetic-pharmacodynamic studies investigating the brain distribution and effect delay of morphine and morphine-6-glucuronide

    Författare :Marcel René Bouw; Uppsala universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Pharmacy; FARMACI; PHARMACY; FARMACI; Biopharmaceutics; biofarmaci;

    Sammanfattning : The microdialysis technique was developed as a tool for studying the pharmacokinetic and pharmacodynamicrelationships of morphine and morphine-6-glucronide (M6G). Concentrations of unbound drug in blood andbrain were monitored in order to elucidate the origin of the observed delay in antinociceptive effect in rats. LÄS MER

  7. 15. Hemodynamic and cardiometabolic studies in patients with distributive circulatory dysfunctions : with special reference to the effects of the beta-1-adrenoreceptor agonist prenalterol

    Författare :Sebastian Reiz; Umeå universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; aortic aneurysm surgery; gram negative septic shock; hemodynamics; myocardial metabolism; thermodilution; thoracic epidural block; volume loading; prenalterol;

    Sammanfattning : A total of 49 patients were studied, using invasive hemodynamic techniques with systemic arterial, pulmonary artery and right atrial pressure recordings together with thermodilution cardiac output determinations. Sixteen of the patients were also subjected to cardiometabolic studies, using measurement of coronary sinus blood flow by the continuous thermodilution technique and analyses of oxygen content and lactate concentration in the systemic and coronary circulation. LÄS MER