Use of nitroglycerin in the active phase of tilt testing: is there a difference in elderly patients?
In a population with syncope of unknown origin, tilt testing potentiated with nitroglycerin: a) makes a significant contribution to clarifying diagnosis and is of equal value in both elderly and younger patients; and b) is associated with a higher incidence of neurocardiogenic vasodepressor response in the elderly, although with a similar rate of exaggerated responses to nitrates.
These findings provide evidence that some miRNA SNPs are associated with NSCLC survival and can be used as predictive biomarkers.