Steal effect

Abnormal Infrared Effects, (AIRE), Surface-enhanced Infrared Spectroscopy, (SEIRAS), and Intensity Stealing Effects... 

Nervous system Intravenous acetazolamide 1 g can cause transient ischemic attacks when it is used in a test of clinically significant cerebral artery stenosis In this test, a cerebral SPECT scan is performed before and after intravenous administration of acetazolamide 1 g. Acetazolamide causes cerebral vasodilatation, leading to relative hypoperfusion (steal effect) in compromised circulation. This hypoperfusion can cause a transient ischemic attack. In one series, three of 105 patients had transient ischemic attacks after administration of acetazolamide. 

The requirement for an explosive train, that is, a primary explosive to initiate the secondary explosive, is a safety feature. In the past, people wishing to illegally use explosives usually had to steal the detonators (e.g., Timothy McVey). Consequently, the effective control of access to detonators has been widely regarded as a key pubhc safety measure by many governments and law enforcement agencies. However, recently, triacetone triperoxide (TATP) has been used as the primary explosive (e.g., Richard Reid s shoe bomb) and TATP is readily, although hazardously, synthesized from acetone, hydrogen peroxide, and acid. 

One benefit of pemoline s milder effects and slower onset of action is that it appears to possess less abuse potential than other stimulants. The abuse potential, however, is usually a concern not for patients who are prescribed the stimulant, but for others who may want to buy it on the street or steal the pills from someone else. Although pemoline does have some potential for abuse, it is limited. 

Workers of pharaoh s ant, Monomorium pharaonis, utilize their poison gland secretion as an effective repellent in the same way as that of thief ants, Solenopsis (Diplorhoptrum) species, in order to steal brood from the nests of other... 

The effects of desflurane are similar to those of isoflurane although possibly less pronounced at equi-MAC concentrations. There is a dose-dependent reduction in myocardial contractility, cardiac output, arterial blood pressure, and systemic vascular resistance. The [xssibility of coronary steal is of negligible clinical significance. 

The tubes in the condenser required for subcooling steal heat-transfer surface area required for condensation. In effect, the condenser shrinks. This makes it more difficult to liquefy the refrigerant vapor. The vapor is then forced to condense at a higher temperature and pressure. Of course, this raises the compressor discharge pressure. And, as we have seen in the pressure section, this increase in compressor discharge pressure invariably reduces the compressor s capacity and may also increase the horsepower needed to drive the compressor. 

Cocaine is so rewarding that its users prefer it to sex, food, and water, thus overriding basic survival drives. In experiments, laboratory animals will self-administer cocaine to the point of severe toxicity, physical exhaustion, and even death. Many human users support their habit by selling cocaine or by stealing from friends and coworkers. Even Sigmund Freud, who wrote a scholarly and quite accurate treatise on cocaine s effects in Uber Coca (1884), got carried away and claimed his use of the drug cured his morphine addiction. In fact, it simply became a second addiction for him. 

Sildenafil was the first oral treatment for ED and is the most extensively evaluated (35). Overall success rates in patients with cardiovascular disease of 80% or greater have been recorded with no evidence of tolerance, Patients with diabetes with or without additional risk factors, with their more complex, and extensive pathophysiology, have an average success rate of 60%. In randomized trials to date, open-label or outpatient monitoring studies the use of sildenafil is not associated with any excess risk of myocardial infarction, stroke, or mortality (38-40), In patients with stable angina pectoris there is no evidence of an ischemic effect due to coronary steal, and in one large, double-blind, placebo-controlled, exercise study sildenafil 100 mg increased exercise time and diminished ischemia (41), A study of the hemodynamic effects in men with severe CAD identified no adverse cardiovascular effects and a potentially beneficial effect on coronary blood flow reserve (42), Studies in patients with and without diabetes have demonstrated improved endothelial function acutely and after long-term oral dose administration, which may have implications beyond... 

Halothane, isoflurane, and sevoflurane are potent coronary vasodilators, able to produce some degree of coronary steal in ischemic regions. Despite this, halothane may preferentially dilate large coronary arteries and/or interfere with platelet aggregation. If these experimental effects are confirmed, halothane may be the anesthetic of choice in the non-failing ischemic heart (3). 

The most controversial adverse effect of isoflurane is its potential to cause coronary steal in patients with critical... 

Ischemic chest pain is an infrequent but well-documented adverse effect of initiating therapy with nifedipine (5). Its mechanism is unclear, but it may arise from reduced overall coronary blood flow or coronary steal (6). 

Alternatively, bradycardia can accompany hypotension or syncope (25-27), presumably due to a vagal effect (it is responsive to atropine) complete heart block has also been reported (28). Occasionally, similar events occur in patients without ischemic heart disease (29), suggesting a mechanism similar to vasovagal syncope or coronary artery spasm (30,31) rather than coronary steal. 

Because of its natriuretic and vasodilative activity, in addition to its effect on the intracellular ATP-concen-tration [129], ANF seems to be a good candidate for the prevention of CMIN. To date no conclusive beneficial results have been obtained in clinical studies [40,104, 130]. This may be due to the route of application (i.v. versus i.a. in experimental studies) and to intrarenal hemodynamic changes caused by ANF with induction of an arterial-steal phenomenon. 

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