refractoriness


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refractoriness

 [re-frak´tah-re″nes]
the state of being refractory.
postrepolarization refractoriness refractoriness to stimuli that exists even after a fiber has completely repolarized; see also absolute refractory period.

refractoriness

[rifrak′tôrines′]
the property of excitable tissue that determines how closely together two action potentials can occur.
References in periodicals archive ?
15) investigated the predictive value of early symptom changes 1 week after initiation of treatment and found that early non-improvement (< 20% reduction in Brief Pscyhiatric Rating Scale (BPRS) total score at 1 week) predicted non-response at 4 weeks in 100% of cases, suggesting that treatment refractoriness may already be identifiable after 1 week.
Fusion beats are seen frequently, and parasystolic complexes fail to appear when their exit from the parasystolic focus is blocked by refractoriness of the surrounding tissue, here ventricular refractoriness following the first sinus-initiated complex of each cycle.
Refetoff S, DeWind LT, DeGroot LJ: Familial syndrome combining deaf-mutism, stuppled epiphyses, goiter, and abnormally high PBI: possible target organ refractoriness to thyroid hormone.
These trials are also of interest because the rarity with which they are employed throughout the United States illustrates a cultural refractoriness to change that stems from deep-seated but dimly acknowledged needs of patients, physicians, and the medical community as a whole.
Refractoriness, Microstructures and Hi-Temp Oxidation of TaC-Reinforced Iron-Based Alloys Protected by Chromium-Rich Coatings
Physical Properties A) Recommended Service Temperature Degree (Max):1750 B) Refractoriness Degree C Min:1800 C) Dry Density Kg/M3 Min: 2800 D) Linear Change Percent Max: +/-1.
The number of wavelets in atrium is strongly affected by the wavelength which is defined as the distance traveled by the activation wave during functional refractoriness and which is determined by the local AERP and CV.
Prednisolone must be the first-line therapy in moderate disease cases and MM must be the second-line treatment if there is intolerance or refractoriness to prednisolone.
Stigma drives denial of symptoms, increases refractoriness, contributes to self-medicating, delays seeking help, and contributes to poor treatment adherence.
Refractoriness or relapse may be explained by overexpression of the multidrug resistance gene product, P-glycoprotein.
It therefore appeared that the infusions of amiodarone and potassium chloride had not reached the circulation, thus explaining the refractoriness of recurrent supraventricular arrhythmias.