alternans in English

noun

alternating; alternation (as in "pulsus alternans" in Medicine)

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Below are sample sentences containing the word "alternans" from the English Dictionary. We can refer to these sentence patterns for sentences in case of finding sample sentences with the word "alternans", or refer to the context using the word "alternans" in the English Dictionary.

1. Alternans and cardiac ischemia

2. Method and apparatus for assessing induced t-wave alternans

3. Also disclosed are control methods for stabilizing repolarization alternans.

4. I realized it was alternans, and I did a pericardiocentesis.

5. T wave alternans is rate-dependent: to induce alternans, hart rate may be increased by atrial stimulation during invasive EP testing or noninvasively by exercise stress testing.

6. An implantable medical device and associated method assesses T-wave alternans.

7. Key words: acute myocardial ischemia, lidocaine, diltiazem, ventricular arrhythmias, electrical alternans.

8. The clinical tests showed that the method is effective for microvolt T-wave alternans detection.

9. Two strains of Scenedesmus (Scenedesmus acutus f. alternans Hortob. and Scenedesmus armatus (Chod.)

10. Conclusion The development of microvolt T-wave alternans is highly dependent on heart rate.

11. The alternans pattern of cycle-to-cycle variability in physiologic waveforms is assessed by applying transducers (28) to a subject (24), recording physiologic signals (32), and analyzing the alternans pattern of variation in waveform morphology (34).

12. Species include: Physocarpus alternans (M.E.Jones) J.T.Howell (1931) – dwarf ninebark (western North America) Physocarpus amurensis (Maxim.)

13. They are all night-active,Niphargus showing the basic Bigeminus pattern,Eusimulium andPolycelis the Alternans type.

14. • Atrioventricular nodal re-entrant tachycardia: pulse regular, atrioventricular block usual, systolic blood pressure constant, electrical alternans rare

15. The determined characteristics of the detected alternans are analyzed to determine whether cardiac ischemia is present.

16. Microvolt T wave alternans (MTWA) has been associated with malignant ventricular arrhythmias in patients with structural heart disease.

17. A system and method are provided for assessing T-wave alternans (TWA) using cardiac EGM signals received from implanted electrodes.

18. Whether alternans is present in the cardiac signal data segment is determined for each of multiple cardiac signal data segments.

19. Subsequently, a good concordance between the results of invasive and noninvasive assessment of T wave alternans was demonstrated by our group.

20. The occurrence of T wave alternans in this patient population was predictive of future tachyarrhythmic events with subsequent appropriate ICD therapy.

21. Scenedesmus acutus f. alternans, glutathione reductase, glutathione peroxidase, catalase, superoxide dismutase, glucose-6-phosphate dehydrogenase, lipid peroxidation, nickel, reactive oxygen species.

22. Objective determination of monocular accommodation in young eyes revealed a different behaviour in strabismus alternans from that in normal binocular vision.

23. Microvolt level T-wave alternans (mTWA) has recently been proposed to assess abnormalities in ventricular repolarization favoring the occurrence of reentrant arrhythmias [3, 4].

24. Pure cultures of the fungus Mucor alternans, isolated from DDT-contaminated soils, were able to degrade DDT to water-soluble metabolites.

25. The family investigations as well as the research in twins prove that there is no genetical difference between strabismus alternans and strabismus monocularis.

26. Various other methods like ventricular ectopy, signal-averaged ECG, QRS width, microvolt T-wave alternans and programmed ventricular stimulation have been previously evaluated.

27. In an example, the MA detector circuit can include a physiologic impedance input configured to receive physiologic information indicative of mechanical alternans.

28. It is important to analyze the relationship between P wave and QRS complex, to look for an electric alternans as a leading finding for an accessory pathway.

29. Treatment with Ni(NO3)2 leads to the formation of reactive oxygen species (ROS) in the green alga Scenedesmus acutus f. alternans, causing lipid peroxidation.

30. This article briefly summarizes results obtained by the most promising methods such as measures of autonomic tone or analysis of microvolt level T-wave alternans.

31. The results of the currently performed prospective trials in various patient populations will help to establish the utility of T wave alternans assessment as a risk stratifier in clinical practice.

32. Among the insecticides and related compounds tested only lindane, parathion, and Dyfonate caused a reduction in DDT degradation by M. alternans, without severely reducing its vegetative growth.

33. It is important to analyze the relationship between the p wave and QRS complex and to look for electrical alternans as a leading finding for an accessory pathway.

34. T wave alternans (beat-to-beat variability in the amplitude, vector, and/or morphology of the T wave) is considered to be a harbinger of ventricular arrhythmias.

35. The occurrence of spontaneous or dynamic type 1 ST elevation, a macroscopic T wave alternans or pronounced inferior (lateral) J point/ST elevation are signs of acute electrical instability.

36. The first prospective evaluation of the noninvasive alternans measurement using submaximal exercise testing was performed in patients surviving prehospital ventricular fibrillation or sustained ventricular tachycardia referred to our institution.

37. Noninvasive measurement of microvolt T wave alternans (TWA) is a promising new method to assess repolarization abnormalities; in experimental studies, TWA was associated with an increased incidence of ventricular tachyarrhythmias.

38. A systematic ECG approach with evaluation of spontaneous AV block, QRS alternans, P wave location and P wave polarity permits correct identification of the underlying arrhythmia mechanism and the origin of the arrhythmia.

39. Concordant alternans; Concordant alternation; Concordant atrioventricular connections; Concordant body; Concordant changes electrocardiogram; Concordant coastline; Concordant drainage; Concordant injection; Concordant Literal New Testament; Concordant non-specific interstitial pneumonia; Concordant NSIP; Concordant philosophy; Concordant

40. In most cases, however, addition of one of the various fungi to 14C-DDT-treated M. alternans cultures resulted in a total depression of the appearance of water-soluble metabolites in the media.

41. Since under field conditions many species of fungi are simultaneously exposed to mixed residues of pesticidal chemicals, the effects of various species of soil fungi and of various insecticides on DDT degradation by M. alternans were investigated.

42. Alternation of the amplitude of the repolarization wave (T-wave) of the body surface ECG, usually referred to as T-wave alternans (TWA), has become one of the most important noninvasive tools in cardiac risk stratification.

43. The spectrum of non-invasive techniques for risk stratification includes the clinical risk profile, measurement of left ventricular global function (LV ejection fraction), the resting ECG (QT dispersion), an ECG stress test (detection and severity of myocardial ischemia), ambulatory ECG monitoring (number and type of ventricular arrhythmias), surface high resolution ECG (detection of ventricular late potentials), measurement of T wave alternans (TWA, alternans ratio), and measurements of the activity and balance of the autonomous nervous system (heart rate variability, baroreflex sensitivity = BRS).

44. The method includes sensing a cardiac signal from implanted electrodes subsequent to a premature contraction; measuring a T-wave parameter from the sensed cardiac signal for a plurality of cardiac cycles; and determining a T-wave alternans metric corresponding to the measured T-wave parameter.

45. The differentiation of tachycardias is realized in the 12-channel electrocardiogram by means of heart rate, QRS duration, P wave rate and shape, relation between atrial and ventricular action, QRS alternans and the reaction to a blockage of AV conduction, including vagal maneuver and injection of adenosine.

46. The binocular functions of 530 squinting children with a visual acuity of not less than 5/10 (0.5) in the squinting eye, have been examined in connection with the age of onset, the duration and the type of squint (strabismus alternans and strabismus unilateralis).

47. In the short summer nights, the second peak disappears and in the long winter nights it is double.Baetis larvae (B. vernus andB. rhodani) show an activity pattern of the Alternans-type for night-active organisms with a primary peak in the second half of the night which is preceded by a secondary evening peak.

48. In a 61 year old female patient who suffered from atypical chest pain we diagnosed long QT syndrome by QTc duration of 467ms, macroscopic T wave alternans and notched T waves in three leads and hypertrophic cardiomyopathy with asymmetric thickening of basal parts of the septum (2.0 cm) without relevant outflow tract obstruction by echocardiography.

49. Summary data are given for the 25 new species of exotic bark- and wood-boring Coleoptera first reported in the continental United States between 1985 and 2005, including 2 Buprestidae (Agrilus planipennis and Agrilus prionurus), 5 Cerambycidae (Anoplophora glabripennis, Callidiellum rufipenne, Phoracantha recurva, Sybra alternans, and Tetrops praeusta), and 18 Scolytidae (Ambrosiodmus lewisi, Euwallacea fornicatus, Hylastes opacus, Hylurgops palliatus, Hylurgus ligniperda, Orthotomicus erosus, Phloeosinus armatus, Pityogenes bidentatus, Scolytus schevyrewi, Tomicus piniperda, Xyleborinus alni, Xyleborus atratus, Xyleborus glabratus, Xyleborus pelliculosus, Xyleborus pfeilii, Xyleborus seriatus, Xyleborus similis, and Xylosandrus mutilatus).

50. The Marburg Cardiomyopathy Study (MACAS) is a prospective observational study designed to determine the value of the following potential non-invasive arrhythmia risk predictors in more than 200 patients with idiopathic dilated cardiomyopathy (IDC) over a 5-year-follow-up period: New York Heart Association functional class, left ventricular end-diastolic diameter and ejection fraction, left bundle branch block and atrial fibrillation on ECG, QTc and JTc-dispersion on 12-lead ECG, abnormal time-domain analysis and spectral turbulence analysis of the signal-averaged ECG, ventricular arrhythmias and heart-rate variability on 24-hour Holter ECG, baroreflex sensitivity, and microvolt T wave alternans during exercise.