نتایج جستجو برای: respiratory impedance
تعداد نتایج: 241465 فیلتر نتایج به سال:
Several studies have shown that the capability for exercise can be increased in patients with pacemakers by means of adjusting the rate. Respiration is one of the parameters considered for rate control. The aim of our study was to determine how respiratory parameters such as ventilation, tidal volume, and respiratory rate are capable of controlling the pacemaker rate, especially when measured i...
the impulse oscillation system (ios) measures respiratory impedance (zrs) in terms of resistance (rrs) and reactance (xrs) at multiples of 5 hz. these measurements can be used clinically to help diagnose and monitor respiratory disorders, independent of effort. there is, as yet, no information on reference values for ios in iranian adolescents. the predictive equation for resistance and impedan...
Apparent central apnoea (absent breathing movements) detected by monitoring movement of the thoracic wall was compared with simultaneous detection by abdominal wall movement. Eighteen infants provided one or more 24 hour recording of heart rate (electrocardiography), thoracic respiration (transthoracic impedance), and abdominal wall movement (pressure sensitive capsule distortion). Detection of...
The forced oscillation technique (FOT) is a useful tool to assess respiratory resistance and reactance during tidal breathing in patients with respiratory diseases, specifically asthma and chronic obstructive pulmonary disease. Although the FOT has been clinically used, results of respiratory impedance can be affected by various factors such as upper airway artifact. We investigated the effects...
References 1 Cauberghs M, Van de Woestijne KP. Mechanical properties of the upper airway. J Appl Physiol Respir Environ Exerc Physiol 1983; 55: 335–342. 2 Peslin R, Ying Y, Gallina C, et al. Within-breath variations of forced oscillation resistance in healthy subjects. Eur Respir J 1992; 5: 86–92. 3 Brancatisano T, Collett PW, Engel LA. Respiratory movements of the vocal cords. J Appl Physiol R...
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