(n.) An apparatus for delivering measured quantities of liquid or for measuring the quantity of liquid or gas received or discharged. It consists essentially of a graduated glass tube, usually furnished with a small aperture and stopcock.
Example Sentences:
(1) Use of the multiple-dose syringe pump system resulted in a savings of $934.81 in material costs compared with the bottle and burette system and $9.70 in material costs compared with the single-dose syringe pump system (based on 40 doses).
(2) Ultrathin (120-180 microns) gels were prepared with the flap technique and 500 microns gels with the cassette technique; 500 microns gels with immobilized pH gradients were cast using precision molds and a computer controlled mixing device of four burettes.
(3) When the cost of wasted drug was considered, the cost per day of the multiple-dose syringe pump system was substantially less (70%) than the cost per day of the bottle and burette system and approximately the same as the cost per day for the single-dose syringe pump system.
(4) To do this the lower end of the burette must be blocked and a method of doing this without the need to fuse on a glass tap is described.4.
(5) At a selected pO2, O2 supply is maintained by injecting appropriate amounts of O2-saturated aqueous medium into the reaction chamber by using a motor-driven burette.
(6) Implementation of a multiple-dose, multiple-flow-rate syringe pump system may result in cost savings over a traditional bottle and burette system and could complement an existing single-dose syringe infusion system.
(7) Assembled from readily available and economical instrumental components, the apparatus includes a pH meter, a thermoelectric heating and stirring device, a motor-driven burette, and an automatic recorder.
(8) Intravenous fluid containers, burettes, a syringe, infusion sets and end-line filters were evaluated.
(9) Up to 50% potency of chlormethiazole and nitroglycerin, 15-25% of isosorbide dinitrate, and 13-20% of diazepam was lost to PVC sets without burettes, and an additional 10-15% loss of each drug resulted when PVC sets with burettes were used.
(10) A new way of measuring the graduation error in the stem of the Lloyd-Haldane burette is described, in which a fixed mass of water is made to occupy different parts of the stem.
(11) One solution was prepared in a soft polyvinyl chloride minibag (Viaflex, Baxter-Travenol), the other in a semirigid plastic burette (Buretrol, Baxter-Travenol).
(12) administration sets with and without cellulose propionate burettes and to polybutadiene (PBD) sets with and without methacrylate butadiene styrene (MBS) burettes was studied.
(13) Infusion bags, burettes, a syringe, infusion tubings and end-line filters were tested in static and in dynamic experiments.
(14) All drugs (except chlormethiazole) were diluted with 0.9% sodium chloride injection (NS) in glass bottles or in the burette chambers.
(15) The strata in the minibag showed smaller variations in potassium concentration than did corresponding layers in the burette.
(16) Each patient received gentamicin therapy via intravenous piggyback (IVPB) and in-line burette (ILB) methods.
(17) Change of in-line burettes in patients in intensive care at 72-hour intervals is safe and should result in substantial cost savings to hospitals.
(18) At the time the new syringe pump system was implemented, the teaching hospital was using a gravity-dependent bottle and burette system and the community hospital was using a single-dose syringe pump system.
(19) The cumulative amount of paraldehyde delivered at the end of the administration set at six hours was 84% for 5% dextrose solutions in burettes, and 89% or 90% for all other solutions and i.v.
(20) The method involves dilution with an albumin solution, a 2-hr incubation with a commercially available substrate mixture, and manual titration with a burette.
Stopcock
Definition:
(n.) A bib, faucet, or short pipe, fitted with a turning stopper or plug for permitting or restraining the flow of a liquid or gas; a cock or valve for checking or regulating the flow of water, gas, etc., through or from a pipe, etc.
(n.) The turning plug, stopper, or spigot of a faucet.
Example Sentences:
(1) Using a conventional mixture of two units of packed red cells, two units of fresh frozen plasma and 500 ml crystalloid, a single line and a driving pressure of 300 mmHg, the highest flow in our study was 970 ml.min-1 (2.8 mm catheter, no stopcock).
(2) A three-way stopcock with double syringe allows concomitant administration of atropine to counteract the cholinergic side effects of edrophonium.
(3) Stopcocks with larger inner diameters may improve drainage over that achievable with the stopcocks that are currently available.
(4) The use of a three-way stopcock and connecting tube between catheter and syringe is suggested.
(5) Finally it is emphasized that careful handling of the catheters and avoidance of stopcocks and air bubbles are essential for obtaining accurate and reproducible values.
(6) With the prototype stopcock, drainage of water alone was reduced by 0-9% for the catheters of different sizes.
(7) The standard stopcock decreased drainage efficiency for these catheters by 13-42%.
(8) If the stopcock in the boy's toilet begins to stick, ring Michael Gove.
(9) Two outbreaks of pseudobacteraemia occurred related to the arterial line stopcock and to heparin used for biochemistry tests.
(10) Hematocrit and blood gases were measured after withdrawing 0, 2, 4, 6, 8, and 10 ml of flush-blood solutions before sampling from a 20-ga radial artery catheter and 7-ft pressure tubing and stopcock.
(11) Patients were randomized to receive fentanyl initially by an epidural (group A, n = 8) or IV (group B, n = 8) catheter for 6 h, after which they were crossed-over to the alternate route by means of a hidden three-way stopcock.
(12) We found that use of the novel sampling system resulted in significantly fewer episodes of internal bacterial contamination of the arterial monitoring line (7%) than did the use of a stopcock system (61%).
(13) A closed system device with teflon needle, sideholes, and attached stopcock was designed and evaluated for diagnosis and evacuation of neonatal pneumothoraces.
(14) The results showed that both sample volume and discarded volume required smaller amount with a T-connecter than with a three-way stopcock to obtain more accurate measurements.
(15) The safety and efficacy of high-pressure injection through a stopcock was tested using a disposable flow switch model.
(16) A double stopcock technique is described for sampling blood from umbilical catheters.
(17) Superior thyroid artery cannulation during carotid endarterectomy and coupling the cannula to a three-way stopcock with an anaeroid manometer allows the surgical team in the operating field to monitor mean pressures and to draw blood samples for gas analysis from the common, the internal, or the external carotid artery.
(18) Fluid or air may be removed from the chest intermittently with a three-way stopcock attached to the thoracostomy tube and a 60-ml syringe.
(19) A sample containing the dwell volume of the catheter and the stopcock (1 ml) was withdrawn and discarded, followed by fifteen 1 ml samples being taken for analysis.
(20) The electromyograms of the rectus abdominis (EMGra) and of the diaphragm (EMGdi) have been recorded on human subjects immersed at two bath temperatures (TW), 25 and 40 degrees C. The recordings were obtained during a calibrated isometric contraction sustained for 20 s against a closed stopcock at functional residual capacity (FRC) level for EMGra (expiratory effort) and at pulmonary volume greater than 90% vital capacity for EMGdi and EMGra (inspiratory effort).