What's the difference between infusion and perfusion?

Infusion


Definition:

  • (v. t.) The act of infusing, pouring in, or instilling; instillation; as, the infusion of good principles into the mind; the infusion of ardor or zeal.
  • (v. t.) That which is infused; suggestion; inspiration.
  • (v. t.) The act of plunging or dipping into a fluid; immersion.
  • (v. t.) The act or process of steeping or soaking any substance in water in order to extract its virtues.
  • (v. t.) The liquid extract obtained by this process.

Example Sentences:

  • (1) A 2.5-month-old child with cyanotic heart disease who required long-term PGE1 infusions; developed widespread periosteal reactions during the course of therapy.
  • (2) Oxyhaemoglobin (4 microns at 0.35 ml.min-1) infused into the tracheal circulation almost abolished the responses to bradykinin and methacholine.
  • (3) Spontaneous locomotor activity was lower in naloxone-infused rats on day 3 only.
  • (4) During and after the infusion of 5HTP, none of the patients showed an increase in anxiety or depressive symptoms, despite the presence of severe side effects.
  • (5) Increased infusion flow rate did not increase the limiting frequency.
  • (6) After midazolam infusion, there was a 50% decrease in amplitude of P3 in response to target tones (P less than 0.006), whereas N3 latency increased by 40 ms (P less than 0.05).
  • (7) 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.
  • (8) If tracer is introduced into the carotid artery after osmotic treatment, brain uptake is increased by a net factor of 50 (a factor of 70 due to elevation of PA, multiplied by 7 due to infusion by the carotid route) as compared to uptake by normal, untreated brain with infusion into a peripheral vein.
  • (9) The secretion of GH as measured by increased plasma level, in response to oral administration of 500 mg L-dopa or 30 min-infusion of arginine, was not modified by prior intravenous administration of 200 micrograms GH-releasing hormone (GHRH).
  • (10) Infusion of sodium lactate associated with isoproterenol could be used to combat the depressent effects of betablockers in patients with cardiac disorders.
  • (11) The authors conclude that during the infusion of 5-FU, the rise in FpA activation and reduction in PCa as compared to PCag are compatible with activation of coagulation.
  • (12) YM infused at 0.01 pmol.kg-1.min-1 did not cause any changes in urinary flow rate or Na excretion.
  • (13) Infusion of vincristine may be safely incorporated into multiagent chemotherapy programs of the CHOP type for non-Hodgkin's lymphoma.
  • (14) When labelled long-chain fatty acids or glycerol were infused into the lactating goat, there was extensive transfer of radioactivity into milk in spite of the absence of net uptake of substrate by the mammary gland.
  • (15) [5alpha-(3)H]5alpha-Androst-16-en-3-one (5alpha-androstenone) was infused at a constant rate for 180min into the spermatic artery of a sexually mature boar.
  • (16) From the present results it is concluded that secretion of extrapancreatic glucagon increased in response to arginine infusion in the diabetic state, both alloxan diabetic dogs and one-week post-pancreatectomized dogs.
  • (17) First treatment consisted of six-hour infusions on six successive days.
  • (18) GnRH infusion produced an immediate increase in plasma LH concentrations in the mares that ovulated during the infusion period and LH levels peaked at the time of ovulation.
  • (19) Infusion of 1 unit of 25-HCC per hour for 6 hours induced an antiphosphaturia only when administered with 0.2 units of PTH per hour, while neither agent alone changed phosphate excretion.
  • (20) Paired tolbutamide and glucose infusions using a square wave technique demonstrated that although early phase insulin secretion is dimished in the fetus, this is not due to an absolute deficiency of stored insulin.

Perfusion


Definition:

  • (n.) The act of perfusing.

Example Sentences:

  • (1) To quantify the size of the lesion in mice, the area of the infarct on the brain surface was assessed planimetrically 48 h after MCA occlusion by transcardial perfusion of carbon black.
  • (2) The vascular endothelium is capable of regulating tissue perfusion by the release of endothelium-derived relaxing factor to modulate vasomotor tone of the resistance vasculature.
  • (3) When perfusion of the affected lung was less than one-third of the total the tumour was found to be unresectable.
  • (4) To examine the central nervous system regulation of duodenal bicarbonate secretion, an animal model was developed that allowed cerebroventricular and intravenous injections as well as collection of duodenal perfusates in awake, freely moving rats.
  • (5) Myocardial ischaemia was induced in perfused rabbit hearts by ligating the left main coronary artery.
  • (6) Arginine vasopressin further reduced papillary flow in kidneys perfused with high viscosity artificial plasma.
  • (7) They are best explained by interactions between central sympathetic activity, brainstem control of respiration and vasomotor activity, reflexes arising from around and within the respiratory tract, and the matching of ventilation to perfusion in the lungs.
  • (8) Within the capillary-perfused mucosa and muscularis (between 50 and 2000 microns from the urothelial surface), concentrations decreased by 50% for each 500-microns distance.
  • (9) This method provided myocardial perfusion images of high quality which were well correlated with N-13 ammonia images.
  • (10) Infarct size is always expressed as a percentage of the perfusion area of the occluded artery.
  • (11) The results indicated that the role of contact inhibition phenomena in arresting cellular proliferation was diminished in perfusion system environments.
  • (12) These results indicate that FMLP increased a pulmonary microvascular permeability in isolated buffer-perfused rabbit lungs that is PMN dependent and mediated by LT produced possibly by a result of ROS production.
  • (13) While concentrations of fully glycosylated 35S-Cysteine rhEPO did not exhibit any detectable decrease during perfusion, desialo-35S-Cysteine rhEPO was rapidly cleared from the perfusate.
  • (14) Measurement of adenosine in coronary effluent and in ventricular tissue by radioimmunoassay verified that no residual elevated adenosine remained following perfusion and washout.
  • (15) In goldfish intestine (perfused unstripped segments and mucosal strips) the serosal addition of ouabain (10(-4) M) resulted in a vanishment of the transepithelial potential difference and in a continuous increase in transepithelial resistance.
  • (16) Adding prazosin (30 nM) to the perfusate completely (approximately 90%) reversed this effect (p less than 0.05), while alpha 2-adrenergic receptor blockade with yohimbine (300 nM) had no effect.
  • (17) Because isosmolar albumin solution is easier to prepare than hyperosmolar cryoprecipitated plasma and gives comparable results, it remains our perfusate of choice for continuous perfusion preservation.
  • (18) Similarly, the phosphorylation potential, phosphocreatine, adenosine triphosphate, and cyclic adenosine monophosphate were constant in the range of autoregulation but decreased directionally with coronary perfusion pressure below 110 cm H2O for both SHR and WKY rats.
  • (19) Studies were conducted in isolated, buffer-perfused rat lungs to determine if prostaglandin (PG) E1 attenuated pulmonary edema provoked by hydrogen peroxide (H2O2).
  • (20) The cardiac output increased by 29% after hemodilution without significant alterations in cerebral perfusion pressure and showed a good inverse correlation with the Hct and the WBV.

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