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Estimating central and peripheral respiratory resistance
Journal of Applied Physiology, 1978An analytic approach for fractionating total respiratory resistance into central (Rc) and peripheral (Rp) components is presented. In the analysis, linear regression equations relating the logarithm of the measured total resistance to the logarithm of frequency are derived for data spanning the frequency range 1–16 Hz. The computed slope and intercept
R L, Pimmel +3 more
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Respiratory resistance and compliance in the anaesthetized horse
Respiration Physiology, 1969Abstract Total compliance and lower respiratory resistance, that is, total respiratory resistance less upper airway resistance, have been measured during passive expiration in anaesthetized, intubated, completely relaxed animals, lying on their sides. Nine horses and one mule were studied.
W W, Mapleson, B M, Weaver
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Fractionating respiratory resistance in young children
Journal of Applied Physiology, 1979Total respiratory resistance (Rrs) and the fraction of this resistance located peripherally, (Fp) were measured in a group of children (3--5 yr old). The technique used forced random noise to characterize the frequency dependence of effective resistance and an algorithm to compute Rrs and Fp from these data.
S P, Williams +4 more
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The regulation of respiratory resistance in exercising horses
European Journal of Applied Physiology, 2003Horses display remarkable aerobic capabilities, attaining during muscular exercise a maximal rate of oxygen consumption about 30-fold higher than the resting value, and 2.5-fold higher than that of other mammals of similar body mass. Under these circumstances an enormous mechanical burden is expected to impinge on the equine respiratory pump and ...
C. L. Lafortuna +3 more
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Partitioning of respiratory flow resistance in man
Journal of Applied Physiology, 1964Measurements of flow resistance of various components of the respiratory system were measured in adult male subjects in the sitting position. Nasal resistance is the largest single component being nearly one-half the total and two-thirds of the airway resistance during nose breathing. It is highly nonlinear, and shows much variability.
B G, FERRIS, J, MEAD, L H, OPIE
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Laryngeal resistance to respiratory airflow in humans
The Laryngoscope, 1993Although vocal cord adduction has been observed during expiration, measurements of absolute values of resistance changes in man have not been reported in the literature. The authors measured resistance to translaryngeal respiratory airflow in inspiratory and expiratory phases of the respiratory cycle of four healthy, awake men during nasal breathing ...
P, Savard +3 more
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Effect of lithium on the responses to added respiratory resistances
Journal of Clinical Psychopharmacology, 1983IN spite of extensive experience with the use of lithium as a psychoactive drug in manic-depressive disorders, little is known about its effects on the control of breathing.
M, Weiner +4 more
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Antimicrobial resistance in respiratory tract pathogens
Expert Review of Anti-infective Therapy, 2004Antimicrobial resistance has been a problem ever since the introduction of antimicrobial agents 60 years ago. Today, this problem is increasing so rapidly that the end of the antimicrobial era is being predicted. The increasing problems caused by antimicrobial resistance can be illustrated by those seen in bacterial pathogens that cause community ...
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Emotions and Stress Increase Respiratory Resistance in Asthma
Psychosomatic Medicine, 2000Clinical reports suggest that various emotions and types of stress can precipitate asthmatic symptoms, but there is little experimental evidence to substantiate this claim. We studied the impact of different emotional states and stress on respiratory resistance in asthmatic and nonasthmatic individuals.Participants (24 asthmatic and 24 nonasthmatic ...
Ritz T. +3 more
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Effect of exercise on the partitioning of equine respiratory resistance
Equine Veterinary Journal, 1988Summary Pleural, tracheal, pharyngeal and mask pressures as well as airflow and tidal volume of five ponies on a treadmill (incline 8.3°) were recorded simultaneously while resting, walking, trotting slowly, trotting fast, after standing for 30 secs and 5 mins after the end of the exercise.
Art, Tatiana +2 more
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