(n.) A small tube of metal, wood, or India rubber, used for various purposes, esp. for injecting or withdrawing fluids. It is usually associated with a trocar.
Example Sentences:
(1) At the same time the duodenum can be isolated from the stomach and maintained under constant stimulus by a continual infusion at regulated pressure, volume and temperature into the distal cannula.
(2) Animals were chronically implanted with epidural or deep recording electrodes and a cannula in one lateral ventricle, and tested whilst seated in a primate chair.
(3) Neither was the intra-VMH infusion of MA effective if: (i) the rats were not primed with estrogen; (ii) the tips of the cannulae were outside the VMH; or (iii) it was preceded by an intra-VMH infusion of the alpha 1b-antagonist, chloroethylclonidine (CEC).
(4) An inner cannula containing PGE2 or PGF2alpha at its tip was inserted into the previously implanted outer cannula.
(5) 137 internal jugular vein cannulae from 113 patients undergoing open heart surgery were cultured using standard broth culture and a semiquantitative culture technique.
(6) They were fitted with a gastric cannula through which 'milk' was infused automatically.
(7) Thrombosis of the subclavian vein occurs with these cannulae and is usually asymptomatic.
(8) It is suggested that long teflon cannulas should be avoided and that infusion thrombophlebitis could be eliminated as a clinical problem by the use of intermittent short duration intravenous infusions.
(9) Male Holtzman rats were implanted with chronic cerebral cannulas into the LH.
(10) An oxygen-conserving nasal cannula and oxygen concentrator were used.
(11) Rats were implanted with chronic indwelling cannulae into the lateral cerebral ventricle.
(12) Release of noradrenaline (NA), adrenaline (A) and dopamine (DA) was measured in vivo per minute before and after food presentation in satiated rats that had a cannula in the mediodorsal hypothalamic area (MDH).
(13) Ovariectomized (OVXed) animals were implanted with chronic cannulas in the basal forebrain.
(14) Compared to the original cannulas, there were markedly fewer difficulties with granulations, infection, and tube malposition with the modified cannulas.
(15) Blood collection, carried out via a jugular cannula or caudal venipuncture, had no significant effect on cortisol level.
(16) A special CSF outflow opening of the cannula is connected to polyethylene tubing for CSF sampling.
(17) After amputation of the closed tip, a cap from a syringe was inserted via a slit made at the base into one prong of a pair of nasal cannulae.
(18) In Study B, V3V cannulae were implanted in rats after a captopril-induced appetite for NaCl was established.
(19) The patency of chronically implanted intravascular cannulae is usually limited by thrombus formation at the cannula tip.
(20) In Group 1, cardiac drainage was achieved by using single-port drainage cannulae in the superior and inferior vena cava with caval tapes.
Catheter
Definition:
(n.) The name of various instruments for passing along mucous canals, esp. applied to a tubular instrument to be introduced into the bladder through the urethra to draw off the urine.
Example Sentences:
(1) The catheter must be meticulously fixed to the skin to avoid its movement.
(2) Technical factors that account for increased difficulty in these patients include: problems with guide catheter impaction and ostial trauma; inability to inflate the balloon with adequate guide catheter support; and need for increased intracoronary manipulation.
(3) A new balloon catheter has been developed for angioplasty.
(4) Using mini-pigs with an indwelling vascular catheter, the pharmacokinetics of chloramphenicol were investigated in healthy and liver-damaged animals.
(5) Then the esophagogastric variceal network was thrombosed by means of a catheter introduced during laparotomy, which created a portoazygos disconnection.
(6) A quadripolar catheter was positioned either at the site of earliest ventricular activation during induced monomorphic ventricular tachycardia or at circumscribed areas of the left ventricle.
(7) External phonocardiography performed at the time of cardiac catheterization revealed that this loud midsystolic click disappeared whenever a catheter was positioned across the mitral valve.
(8) In the case presented, overdistension of a jejunostomy catheter balloon led to intestinal obstruction and pressure necrosis (of the small bowel), with subsequent abscess formation leading to death from septicemia.
(9) After 1 year, anesthesia was induced with chloralose and an electrode catheter placed at the right ventricular apex.
(10) Catheters containing 0% and 10% heparin were compared in each individual using ultrasound microflow velocimetry, permeability test, sequential determinations of activated partial thromboplastin time, heparin levels and generation of Fibrinopeptide A, beta thromboglobulin and Platelet factor 4.
(11) Of great influence on the results of measurements are preparation and registration (warm-up-time, amplification, closeness of pressure-system, unhurt catheters), factors relating to equipment and methods (air-bubbles in pressure-system, damping by filters, continuous infusion of the micro-catheter, level of zero-pressure), factors which occur during intravital measurement (pressure-drop along the arteria pulmonalis, influence of normal breathing, great intrapleural pressure changes, pressure damping in the catheter by thrombosis and external disturbances) and last not least positive and negative acceleration forces, which influence the diastolic and systolic pulmonary artery pressure.
(12) In one case an infection of the axillary region developed, which disappeared after removal of the catheter without any consequences.
(13) The complication might have been prevented by measurements of U and I, reflecting changes in impedance or by measurements of catheter tip temperature (T).
(14) In all patients a Tenckoff's catheter for peritoneal dialysis was introduced and peritoneal effusion extracted and measured.
(15) A fiberoptic flow-directed catheter inserted into the hepatic vein continuously measures hepatic venous oxygen hemoglobin saturation (ShvO2).
(16) The complex problems have been successfully managed with novel guiding catheter shapes and ultralow profile balloons.
(17) We present the results of giving continuous positive airway pressure (CPAP) via a single nasal catheter to 20 preterm infants.
(18) An intravenous catheter system for long-term (at least 6-8 weeks) parenteral nutrition of unrestrained rats is described.
(19) By using these larger catheters, the surgeon will not lose the option of using isosmotic preparations.
(20) Indirect methods to evaluate left ventricular function included the use of the Swan-Ganz catheter for pulmonary capillary wedge pressure measurement, systolic time intervals, and cardiac output.