What's the difference between catheter and patency?
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.
Patency
Definition:
(n.) The condition of being open, enlarged, or spread.
(n.) The state of being patent or evident.
Example Sentences:
(1) Experiments have been performed using CO2 laser-assisted microvascular anastomoses, and they demonstrated the following features, in comparison with conventional anastomoses: ease in technique; less time consumption; less tissue inflammation; early wound healing; equivalency of patency rate and inner pressure tolerance; but only about 50 percent of the tensile strength of manual-suture anastomosis.
(2) Central assessment of the angiograms revealed a patent infarct-related artery in 78 patients (patency rate 66%, 95% confidence limits 57 to 74%).
(3) This noninvasive but precise imaging modality demonstrates the potential value of using MRI to evaluate the diameter of small vessels, including the postoperative monitoring of arterial bypass graft patency in peripheral regions.
(4) a) To determine the frequency of perforations in latex surgical gloves before, during, and after surgical and dental procedures; b) to evaluate the topographical distribution of perforations in latex surgical gloves after surgical and dental procedures; and c) to validate methods of testing for latex surgical glove patency.
(5) We use this procedure to assess the excitability of the auditory nerve, the patency of the cochlea and to detect undesirable side effects of electrical stimulation, such as facial nerve activation.
(6) Forty-eight reinterventions in 34 limbs were required to restore or maintain graft patency in thrombosed or failing grafts.
(7) Corresponding rates for secondary patency at 6 years were 51.4% and 76.4% (p < 0.005).
(8) No patient had a previous infarction, and none underwent intervention seeking to restore coronary patency.
(9) The "animal" rings almost constantly caused local phlebitis, but these changes were not reflected in the patency rates at one week.
(10) Minor technical errors may jeopardize the patency of femoral-popliteal bypass grafts.
(11) Intraarterial digital subtraction angiography (DSA) was performed to evaluate graft patency in 45 patients undergoing coronary artery bypass grafting with the use of internal mammary artery (IMA).
(12) The results should be analysed by the Kaplan-Meier estimator, and patency rates should be compared by the log-rank test or Gehan's test.
(13) Arteries less than 1.5 mm in diameter had a patency rate of 84.9%, versus 96.1% for vessels 1.5 mm or larger (p = 0.009).
(14) The overall cumulative graft patency rates were 95 and 87 per cent at 1 and 5 years respectively.
(15) Reapplication of the clamp proximally or distally to the anastomosed site does not change the patency rate.
(16) As part of two Department of Veterans Affairs Cooperative Trials, we obtained angiographic patency data for internal mammary artery (IMA) and saphenous vein grafts to the left anterior descending (LAD) coronary artery at 1 year after coronary artery bypass surgery.
(17) In 17 patients with hilar cholangiocarcinoma and intrahepatic bile duct dilatation, the relationships between lobar or segmental atrophy, compensatory hypertrophy, and patency of portal vein branches were evaluated with computed tomography (CT) and angiography.
(18) This study was designed to evaluate the relationship between immediate postoperative arterial blood supply to the graft, arterial patency monitored by angiography, and clinical outcome.
(19) To test the hypothesis that serum total cholesterol influences the clinical outcome following acute myocardial infarction, infarct size, left ventricular ejection fraction, infarct-related vessel patency, and in-hospital cardiac events were determined in 106 consecutive patients given thrombolytic therapy within 5 h of symptom onset.
(20) Endothelial cell seeding may improve the patency of synthetic vascular grafts provided that platelet reactivity of nonendothelialized sites is not increased.