Rhinoviruses are the most common infectious agents of humans. They are the principal etiologic agents of afebrile viral upper-respiratory-tract infections (the common cold). Human rhinoviruses (HRVs) comprise a genus within the family Picornaviridae. There are >100 serotypically distinct members of this genus. In order to better understand their phylogenetic relationship, the nucleotide sequenc...

BACKGROUND AND OBJECTIVE According to international standards, autonomic function is assessed by heart rate variability (HRV) calculated from R-R intervals obtained with an electrocardiogram (ECG). However, intra-operative movement artefacts and electrical interference may complicate R-wave detection. Pulse rate variability (PRV) derived from continuous blood pressure measurements may provide a...

Low values on heart rate variability (HRV) derived parameters at resting have been used to predict cardiovascular diseases (CVD) and mortality. In this regard, short-term HRV recordings (usually from 5 15 minutes) are increasing their popularity because data acquisition can be performed under more controlled conditions than long-term (e.g., 24 hours). However, different methodological aspects b...

Pyridostigmine bromide (PB) is a reversible cholinesterase inhibitor. The aim of this study was to determine the effect of orally administration of single dose sustained-released tablet of pyridostigmine bromide (PBSR) on the frequency domain indices of heart rate variability (HRV). Thirty-two healthy young men were participated in this study. They were divided into 2 groups; the pyridostigmine...

BACKGROUND Heart rate variability (HRV) is a parameter of autonomic nervous system function. A decrease of HRV has been associated with disease severity, risk of complications and prognosis in several conditions. OBJECTIVE We aim to investigate the feasibility and the reliability of in-ambulance HRV registration during emergency interventions, and to evaluate the association between prehospit...

The aim of this letter is to emphasize some of the most important factors that may affect the reliability of heart rate variability (HRV) analysis and to share the initial findings of our recent study on the effects of spontaneous saliva swallowing on HRV and the reliability of HRV analysis. The reliability of HRV analysis is controversial (1). Despite this, more than 28,000 papers related to H...

Terajima, Masanori, Mutsuo Yamaya, Kiyohisa Sekizawa, Shoji Okinaga, Tomoko Suzuki, Norihiro Yamada, Katsutoshi Nakayama, Takashi Ohrui, Takeko Oshima, Yoshio Numazaki, and Hidetada Sasaki. Rhinovirus infection of primary cultures of human tracheal epithelium: role of ICAM-1 and IL-1b. Am. J. Physiol. 273 (Lung Cell. Mol. Physiol. 17): L749–L759, 1997.—Exacerbations of asthma are often associat...

It is shown that the heart rate variability (HRV) in healthy and diseased humans possesses a hierarchical structure of the She-Leveque (SL) form. This structure, first found in measurements in turbulent fluid flows, implies further details in the HRV multifractal scaling. The potential of diagnosis is also discussed based on the characteristics derived from the SL hierarchy. The heart beat inte...

In this paper we investigated heart rate time series stored by implantable cardioverter defibrillators in order to the short-term forecast ventricular tachycardia (VT). Standard heart rate variability (HRV) parameters, compression based entropy functions, and HRV scaling characteristics (detrended fluctuation analysis, Higuchi’s fractal dimension) were analyzed in 29 VT time series and compared...