Search results for "Blood"

A new approach using high volume blood patch for prevention of post-dural puncture headache following intrathecal catheter pump exchange.

2015

Background: In an observational study, complications of intrathecal catheter pumps necessitating surgical exchange were analyzed. Also the use of a high-volume prophylactic epidural blood patch (EBP) during surgery for preventing post-dural puncture headache (PDPH) with a follow-up for 1 year is described. Materials and Methods: In 22 patients with refractory chronic pain of cancer/noncancer origin or severe spasticity, who were receiving intrathecal morphine including adjuvants or baclofen for symptom relief, catheter exchange with or without pump was performed. In patients with documented symptoms of PDPH following initial intrathecal catheter implantation, a prophylactic EBP with a high …

Haemodynamic effects of long-term administration of sildenafil in normotensive pregnant and non-pregnant rats

2011

Please cite this paper as: Pellicer B, Herraiz S, Cauli O, Rodrigo R, Asensi M, Cortijo J, Serra V, Morcillo E, Felipo V, Simon C, Pellicer A. Haemodynamic effects of long-term administration of sildenafil in normotensive pregnant and non-pregnant rats. BJOG 2011;118:615–623. Objective  To determine the effects of chronic administration of sildenafil citrateon healthy pregnant rats. Design In vivo animal experimental study. Setting  Fundacion IVI–Instituto Universitario IVI, Valencia, Spain. Sample  Pregnant and non-pregnant Wistarrats exposed to chronic administration of sildenafil. Methods  Placental cross-barrier and feto-maternal relationship levels, maternal blood pressure, and haemody…

Steep blood pressure increase in low birth weight newborns

2004

Respiratory Gas Transport in Blood during Pregnancy with Hemoglobin Concentrations Below 12g/100ml

1978

During pregnancy the conditions for respiratory gas transport in blood and respiratory gas exchange differ from that of non-pregnant healthy women. The hemoglobin concentration and, consequently, the O2 capacity of blood decreases. The arterial CO2 tension falls between the 10th and the 40th week of gestation to values of about 30 mmHg, while the pH of the arterial blood during the same period was found to be nearly constant at an elevated level (7). Investigations of blood O2 affinity during pregnancy led to non-uniform results. Several investigators found no significant change whereas others described a significant decrease of blood O2 affinity in pregnant women and a mean P50 value of ab…

The lipid composition of red blood cells and their hemorheological behavior in patients with primary hyperlipoproteinemia

1993

Chronifizierte paranoid-halluzinatorische Psychose als Erstmanifestation einer HIV-Infektion?

2008

In a 36-year-old patient an acute onset of psychosis occurred, probably due to HIV infection. For one year HIV-infection with reduced T4/T8 ratio had been known without clinical manifestation (stage IV B of the CDC-classification). He developed chronic delusional hallucinations, which persisted for more than one year in spite of adequate psychoactive drug therapy. So far AIDS-related dementia has not become evident. Focal lesions caused by opportunistic infections or tumour were excluded by computed tomography and magnetic resonance imaging. The latter revealed several small lesions and the brain scan showed a nonhomogeneous pattern of cerebral blood flow. CSF-examination disclosed a mild l…

Hemostasis in brain tumor surgery using the Aquamantys system

2014

Background: Adequate hemostasis in cranial and spinal tumor surgery is of paramount importance in neurosurgical practice. Generalized ooze bleeding from the surgical walls cavity, coming from neoplastic vessels or nervous tissue, may be problematic. Recent technical advances have dramatically reduced intraoperative complications related to blood loss. Several techniques are usually employed to control hemostasis in tumor surgery, including preoperative embolization, intraoperative hypotension, electrical coagulation, and local application of fibrin sealants or hemostatic matrix, which influence coagulation. Material/Methods: Our aim in this study was to evaluate the efficacy and the safety …

Cell Line and Growth Site as Relevant Parameters Governing Tumor Tissue Oxygenation

1986

Experimental rodent tumors commonly used in radiobiology exhibit a large inter-individual variability in the oxygenation status [1,2] and in the hypoxic cell fraction [3,4]. Paramount factors contributing to this variability may be tumor growth stage or tumor size [5], the cell line used, the growth site, the use of anaesthesia and certain tumor-host interactions (e.g. tumor-induced anemia). Concerning the basic pathogenetic mechanisms through which the above mentioned parameters can modulate tumor tissue oxygenation, variations of nutritive blood flow, inherent characteristics of the cell line (e.g. respiration rate or tumor growth rate), and finally changes in the O2 transport capacity of…

Coronary artery and bypass flow measurement—basic methodology and current status

1998

Ventrolateral Compression of the Brain Stem in Essential Hypertension: MR Angiography Study

1997

Our purpose was to evaluate neurovascular compression at the level of ventrolateral medulla and NVC with the IXth and the Xth cranial nerves in patients with essential hypertension and in healthy volunteers using high resoluted Spoiled Recalled Gradient Echo (SPGR) sequences, allowing the detection of stationary tissues and moving spins. Thirty patients (19 men and 11 women) with essential hypertension were examined. Patient's ages ranged from 24 to 64 years-old (mean age was 48 y.o.). Patients older than 65 were excluded. The average of systolic blood-pressure of hypertensive patients was 183 ± 10 mmHg, while the diastolic pressure was 98 ± 10.5 mmHg. In conclusion, we consider axial sing…