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instability |
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instability 1. tendency to variable or unpredictable behaviour 2. Physics a fast growing disturbance or wave in a plasma instability [‚in·stə′bil·əd·ē] (control systems) A condition of a control system in which excessive positive feedback causes persistent, unwanted oscillations in the output of the system. (physics) A property of the steady state of a system such that certain disturbances or perturbations introduced into the steady state will increase in magnitude, the maximum perturbation amplitude always remaining larger than the initial amplitude. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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Exclusion on the basis of urodynamic findings occurred if a woman demonstrated detrusor instability or an abdominal leak point pressure of less than 60 cm of [H. Some women will have cough induced detrusor instability and will initiate voiding after the cough; this is not a positive cough stress test. Urge incontinence due to refractory detrusor instability is treated with augmentation cystoplasty or bladder denervation procedures. |
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