Computerized infusion test compared to steady pressure constant infusion test in measurement of resistance to CSF outflow

1992 ◽  
Vol 119 (1-4) ◽  
pp. 12-16 ◽  
Author(s):  
S. E. B�rgesen ◽  
M. J. Albeck ◽  
F. Gjerris ◽  
M. Czosnyka ◽  
P. Laniewski
Keyword(s):  
Constant Infusion ◽  
Infusion Test ◽  
Steady Pressure ◽  
Resistance To Csf Outflow

In vitro evaluation method of bioartificial liver function: constant infusion test

2002 ◽  
Vol 5 (4) ◽  
pp. 284-288
Author(s):  
Y. G. Park ◽  
H. Iwata ◽  
T. Sajiki ◽  
H. Maeda ◽  
Y. Ueda ◽  
...  
Keyword(s):  
Liver Function ◽  
Evaluation Method ◽  
Bioartificial Liver ◽  
Constant Infusion ◽  
Infusion Test ◽  
In Vitro Evaluation ◽  
Function Constant

The constant flow ventricular infusion test: a simple and useful study in the diagnosis of third ventriculostomy failure

2012 ◽  
Vol 116 (2) ◽  
pp. 445-452 ◽  
Author(s):  
Kristian Aquilina ◽  
Ian K. Pople ◽  
Jenny Sacree ◽  
Michael R. Carter ◽  
Richard J. Edwards
Keyword(s):  
Mr Imaging ◽  
Normal Pressure ◽  
Third Ventriculostomy ◽  
Constant Flow ◽  
Infusion Test ◽  
Imaging Evaluation ◽  
Shunt Insertion ◽  
Resistance To Csf Outflow ◽  
Csf Diversion ◽  
A Prospective Study

Object The evaluation of third ventriculostomy function in hydrocephalic patients is challenging. The utility of the constant flow infusion test in predicting response to shunt insertion in normal-pressure hydrocephalus, as well as in identifying shunt malfunction, has been previously demonstrated. The object of this study was to evaluate its usefulness in determining whether a revision CSF diversion procedure was indicated in patients presenting with recurring symptoms and persisting ventriculomegaly after endoscopic third ventriculostomy (ETV). Methods The authors conducted a prospective study of all patients who, after undergoing ETV at their institution, presented postoperatively with recurring symptoms and persisting ventriculomegaly. Results Forty-six patients (mean age 40.7 years, including 11 patients younger than 18 years) underwent 56 constant flow ventricular infusion tests (VITs) at a mean of 24.7 months post-ETV. Thirty-three patients with resistance to CSF outflow (Rout) less than 13 mm Hg/ml/min underwent follow-up (median 17 months) and experienced resolution of symptoms. In 10 episodes Rout was greater than 13 mm Hg/ml/min; the patients in these cases underwent revisional CSF diversion. Two patients demonstrated high and frequent B (slow) waves despite a low Rout; these patients also underwent successful revisions. Patients who improved after surgery had increased B wave activity in the plateau phase of the VIT (p = 0.01). Thirty-four patients underwent MR imaging at the same time; 4 had high Rout despite evidence of flow across the stoma. These 4 patients underwent surgery and experienced resolution of symptoms. Of 9 patients without flow, Rout was less than 13 mm Hg/ml/min in 4; these patients were successfully treated conservatively. Conclusions The VIT is a useful and safe adjunct to clinical and MR imaging evaluation when ETV failure is suspected.

Post saline infusion test aldosterone levels indicate severity and outcome in primary aldosteronism

2014 ◽  
Vol 122 (03) ◽  
Author(s):  
M Weigel ◽  
A Riester ◽  
G Hanslik ◽  
K Lang ◽  
S Endres ◽  
...  
Keyword(s):  
Primary Aldosteronism ◽  
Saline Infusion ◽  
Infusion Test

Circulating Activities During Constant Infusion of Heparin or a Low Molecular Weight Derivative (Enoxaparine): Failure to Demonstrate any Circadian Variations

1987 ◽  
Vol 58 (04) ◽  
pp. 1068-1072 ◽  
Author(s):  
P Toulon ◽  
J F Vitoux ◽  
C Leroy ◽  
T Lecomte ◽  
M Roncato ◽  
...  
Keyword(s):  
Molecular Weight ◽  
Circadian Rhythm ◽  
Biological Activities ◽  
Constant Infusion ◽  
Low Molecular Weight ◽  
Circadian Variations ◽  
Heparin Cofactor Ii ◽  
Heparin Infusion ◽  
Chromogenic Assay ◽  
Heparin Affinity

SummaryWe compared in six patients successively treated with an unfractionated heparin (UFH) and a low molecular weight heparin (LMWH) the variations in plasma anti-Xa activity, measured in a chromogenic assay, during a 36 h constant infusion. The values varied in a wider range during UHF infusion, but remained in the therapeutic range except once in one patient. No circadian rhythm could be demonstrated in our six patients. LMWH infusion yielded very constant anti-Xa circulating activities. In both cases, there were no significant modifications of three proteins with high heparin affinity (antithrombin III, heparin cofactor II, histidine-rich glycoprotein).Our results suggest that the circadian rhythm of the biological activities previously observed in patients treated with constant heparin infusion using clotting method is due to other factors than heparin itself.

THE INTRAVENOUS CALCIUM INFUSION TEST

1967 ◽  
Vol 56 (1_Suppl) ◽  
pp. S31 ◽  
Author(s):  
B.-A. Lamberg ◽  
P. Torsti ◽  
J. Takkunen
Keyword(s):  
Infusion Test ◽  
Calcium Infusion ◽  
Intravenous Calcium

Calcium infusion test in primary hyperparathyroidism- sensitivity of calcium sensing receptor, possible new theories?

2019 ◽  
Author(s):  
Emir Muzurovic ◽  
Sandra Pekic ◽  
Marina Djurovic ◽  
Dragana Miljic ◽  
Marko Stojanovic ◽  
...  
Keyword(s):  
Primary Hyperparathyroidism ◽  
Infusion Test ◽  
Calcium Sensing Receptor ◽  
Calcium Sensing ◽  
Calcium Infusion

Insulin adsorbance to polyvinylchloride surfaces with implications for constant-infusion therapy

Diabetes ◽  
1976 ◽  
Vol 25 (1) ◽  
pp. 72-74 ◽  
Author(s):  
L. Peterson ◽  
J. Caldwell ◽  
J. Hoffman
Keyword(s):  
Constant Infusion ◽  
Infusion Therapy
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