(n.) The act of obstructing, or state of being obstructed.
(n.) That which obstructs or impedes; an obstacle; an impediment; a hindrance.
(n.) The condition of having the natural powers obstructed in their usual course; the arrest of the vital functions; death.
Example Sentences:
(1) We have previously shown that intratracheally instilled silica (quartz) produces both morphologic evidence of emphysema and small-airway changes, and functional evidence of airflow obstruction.
(2) Evaluation revealed tricuspid insufficiency, a massively dilated right internal jugular vein, and obstruction of the left internal jugular vein.
(3) A segment of vas deferens was transplanted to the contralateral deferens with the intention of improving treatment for certain cases of infertility caused by obstruction.
(4) 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.
(5) During the procedure, acute respiratory failure developed as a result of tracheal obstruction.
(6) Intranasal challenge of allergic subjects with the allergen to which they are sensitive rapidly produces sneezing, rhinorrhea, and airway obstruction.
(7) Delineation of the presence and anatomy of an obstructed, nonfunctioning upper-pole duplex system often requires multiple imaging techniques.
(8) Therefore, the measurement of the alpha-antitrypsin content plays the crucial part in differential diagnosis of primary (hereditary determined) and secondary (obstructive) emphysema.
(9) In 2 patients who had received cadaveric renal allograft, ureteral obstruction was detected six and one-half and five and one-half years after transplantation.
(10) Two cases are presented of bilateral ureteral obstruction and uremia due to pressure from nodes involved in disseminated lymphoma.
(11) The occurrence of episodes of desaturation during sleep in patients suffering from chronic airflow obstruction is well known.
(12) Keep it in the ground campaign Though they draw on completely different archives, leaked documents, and interviews with ex-employees, they reach the same damning conclusion: Exxon knew all that there was to know about climate change decades ago, and instead of alerting the rest of us denied the science and obstructed the politics of global warming.
(13) Tubal obstruction could be demonstrated in only one of these patients.
(14) Schistosomal obstructive uropathy was studied by clinical, laboratory epidemiologic and pathologic analysis in 155 Egyptian patients treated surgically.
(15) For obstruction of greater than or equal to 50% of the pulmonary vascular cross-sectional area and pulmonary hypertension thrombolytic therapy should be given and insertion of an inferior caval filter can be considered.
(16) Regression of the tumor occurred during an episode of mechanical small bowel obstruction.
(17) Comparison with 99Tc-pyrophosphate uptake in infarcted dog heart, induced by selective obstruction of a coronary artery, suggest that the 111In-labelled F(ab')2 localizes specifically in infarcted myocardium only.
(18) In case of biliary and pancreatic duct obstruction with pure pancreatic reflux, both oedema and inflammatory infiltrations were evident, whereas, in the presence of biliary reflux too, more serious histological features were detected.
(19) We recently treated a patient in whom HPVG was caused by intestinal pseudo-obstruction.
(20) In patients with acute exacerbations of chronic obstructive pulmonary disease, although either sympathomimetic or anticholinergic therapy provides bronchodilatation, no further benefit could be demonstrated from combination therapy.
Thrombosis
Definition:
(n.) The obstruction of a blood vessel by a clot formed at the site of obstruction; -- distinguished from embolism, which is produced by a clot or foreign body brought from a distance.
Example Sentences:
(1) This should not be a serious limitation to the application of the RIA in the detection of venous thrombosis.
(2) In addition to their involvement in thrombosis, activated platelets release growth factors, most notably a platelet-derived growth factor (PDGF) which may be the principal mediator of smooth muscle cell migration from the media into the intima and of smooth muscle cell proliferation in the intima as well as of vasoconstriction.
(3) At present it may be concluded that ORT per se does not place the postmenopausal women at greater risk from developing arterio-venous thrombosis.
(4) 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.
(5) We describe 10 patients with cerebral venous thrombosis: two had protein S deficiency, one had protein C deficiency, one was in early pregnancy, and there was a single case of each of the following: dural arteriovenous malformation, intracerebral arteriovenous malformation, bilateral glomus tumours, systemic lupus erythematosus, Wegener's granulomatosis, non-Hodgkin's lymphoma.
(6) It is concluded that the transcutaneous ultrasound technique provides a reliable, rapidly available, non-invasive method to confirm the diagnosis of deep vein thrombosis.
(7) Lupus anticoagulant associated with thrombocytopenia, thrombosis or recurrent abortions was diagnosed in 2 epileptic patients chronically treated with anticonvulsant drugs.
(8) A neonate, with a postconceptual age of 29 weeks, suffered thrombosis of the aorta as a consequence of umbilical artery catheterisation.
(9) The increased risk of thrombosis seen in patients with malignancy also was recently confirmed in breast cancer patients undergoing hormonal or chemotherapeutic treatment.
(10) Anticardiolipin antibodies delineate a recently defined syndrome characterized by venous and arterial thrombosis, thrombocytopenia and recurrent fetal loss, usually in the setting of autoimmune disease.
(11) Seventy-one patients with 80 lower limbs clinically suspected of deep venous thrombosis (DVT) were investigated by both Doppler ultrasound and venography.
(12) Thus, photoinduced vascular thrombosis of a large feeding artery leads to the formation of blood-borne factors that acutely alter cerebral vascular permeability.
(13) In conclusion, this study does not establish any indication or any contraindication in terms of hepatic histopathology with the possible exception of hepatic venous thrombosis for the use of oral testosterone treatment in men with alcoholic cirrhosis.
(14) Molsidomine and SIN-1 were tested in a thrombosis model in which thrombi are produced in small mesenteric vessels.
(15) We present 7 cases of digital artery thrombosis with ischemic symptoms.
(16) Thrombosis of the subclavian vein occurs with these cannulae and is usually asymptomatic.
(17) The right atrium thrombosis in the region of Chiari network resulted in the thromboembolism of the left pulmonary artery this being an immediate cause of death.
(18) In order to prevent thrombosis after implantation, anticoagulant therapy is indicated.
(19) To induce thrombosis we damaged the vessel wall over a short segment by compression and exposed the damaged media to the blood stream.
(20) In venous thrombi, soluble fibrin and fibrinogen exhibited maximum thrombus-blood ratios when they were injected 4 hours after thrombus induction; the thrombus-blood ratio was greater for soluble fibrin than it was for fibrinogen when these agents were injected 4, 8, or 24 hours after thrombosis induction.