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Keyword: ventilation
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Articles
Clin Sci (Lond) (2006) 110 (6): 683–692.
Published: 15 May 2006
... ventilation AMS (acute mountain sickness) is a symptom complex that includes headache, nausea, dizziness, tiredness, weakness and insomnia, and is most common when low-altitude residents ascend rapidly to altitudes exceeding 3000 m [ 1 ]. Acetazolamide has been used for decades to prevent AMS [ 2...
Articles
Clin Sci (Lond) (2004) 106 (3): 321–328.
Published: 01 March 2004
... few days of chronic residence at the same altitude. Increased ventilation and diuresis may contribute to the reduction in AMS with altitude acclimatization. The aim of the present study was to examine the effects of intermittent altitude exposures (IAE), in combination with rest and exercise training...
Articles
Clin Sci (Lond) (2000) 99 (3): 223–230.
Published: 16 August 2000
...Stuart D. R. GALLOWAY; Giuseppe DE VITO; Sam McCLURE; Myra A. NIMMO; John J. V. McMURRAY Augmentation of circulating noradrenaline concentration stimulates ventilation during the initial stages of exercise and this is accompanied by an increased sensation of dyspnoea and exertion. This previous...
Articles
Clin Sci (Lond) (1996) 91 (3): 337–345.
Published: 01 September 1996
...Ken D. O'halloran; Aidan K. Curran; Aidan Bradford 1. Ventilation was measured during normoxia, hypoxia and hypercapnia before and after administration of almitrine in conscious, unrestrained, tracheostomized rats with the superior laryngeal nerves intact or cut. In superior laryngeal nerve-intact...
Articles
Clin Sci (Lond) (1995) 88 (3): 325–330.
Published: 01 March 1995
... pulmonary disease. These changes have been attributed to the anti-inflammatory properties of the drug. However, airways function can be improved by other means, e.g. improved ventilation/perfusion ratio or reduced airways resistance. The possibility that fenspiride may have actions other than anti...
Articles
Clin Sci (Lond) (1992) 83 (4): 391–397.
Published: 01 October 1992
...Larry C. Lands; George J. F. Heigenhauser; Norman L. Jones 1. Maximal exercise capacity in cystic fibrosis is influenced by both pulmonary and nutritional factors: lung disease by limiting maximal achievable ventilation, and malnutrition through a loss of muscle mass. The associated reduction in...
Articles
Clin Sci (Lond) (1990) 78 (6): 541–545.
Published: 01 June 1990
... oxygen saturation, mean ventilation was significantly lower in the less obese state. Similarly to hypercapnic responses, there were no statistically significant changes in ventilatory pattern despite the changes in overall ventilatory response. 5. We conclude that ventilatory responsiveness to chemical...
Articles
Clin Sci (Lond) (1988) 74 (5): 531–537.
Published: 01 May 1988
... and minute ventilation such that it could be a secondary response to either. However, during and after inspiration of 15% O 2 , changes in breathlessness occurred relatively more quickly than those in ventilation, more closely reflecting changes in oxygen saturation; this suggests that hypoxia, per se...
Articles
Clin Sci (Lond) (1987) 73 (6): 617–625.
Published: 01 December 1987
...K. Murphy; R. P. Stidwill; Brenda A. Cross; Kathryn D. Leaver; E. Anastassiades; M. Phillips; A. Guz; S. J. G. Semple 1. Continuous recordings of arterial pH, ventilation, airway CO 2 and heart rate were made during rest and during 3–4 min periods of rhythmic leg exercise in four renal patients...
Articles
Clin Sci (Lond) (1987) 73 (3): 311–318.
Published: 01 September 1987
... later copied these breathing patterns. 2. During all experiments flow, ventilation and pleural pressures were recorded. In addition, breathlessness was measured on a visual analogue scale every 30 s. 3. In these patients voluntary copying of either form of stimulated breathing resulted in diminished...
Articles
Clin Sci (Lond) (1987) 73 (3): 333–335.
Published: 01 September 1987
...R. M. Schwartzstein; K. La Hive; A. Pope; R. A. Steinbrook; D. E. Leith; J. W. Weiss; V. Fencl; S. E. Weinberger 1. To investigate whether changes in P a co 2 can be detected independently of the CO 2 -induced changes in pulmonary ventilation, we tested five normal subjects for the ability to...
Articles
Clin Sci (Lond) (1987) 73 (2): 177–182.
Published: 01 August 1987
... chamber in the inspiratory limb of a breathing circuit. 2. The time course of the response of ventilation ( V ) and mean alveolar P co 2 ( P aco 2 ) was checked in separate experiments, where the flow rate of injected CO 2 was changed abruptly and the effects were followed for 10 min. 3. V and P aco 2...
Articles
Clin Sci (Lond) (1987) 72 (6): 693–698.
Published: 01 June 1987
... arterial oxygen desaturation during the exercise. 2. During the exercises, ventilation was recorded and patients recorded their sensation of breathlessness on a visual analogue scale (VAS) every 30 s. 3. Breathing supplemental oxygen produced a small fall in mean exercise ventilation and a large and...
Articles
Clin Sci (Lond) (1986) 71 (1): 17–22.
Published: 01 July 1986
... circuit. 2. Ventilation ( V ) was measured with a dry gas meter and Pco 2 at the mouth was recorded by a mass spectrometer. Mean alveolar P co 2 ( P aco 2 ) was taken as equal to end-tidal P co 2 at rest, and during exercise was derived graphically from the sloping alveolar plateaus. The accuracy of the...
Articles
Clin Sci (Lond) (1986) 70 (6): 555–564.
Published: 01 June 1986
...J. M. B. Hughes; D. J. Allison; A. Goatcher; A. Tripathi 1. Almitrine bismesylate (5–10 μg/kg) was given as an intravenous bolus to anaesthetized, paralysed dogs (a) with closed-chest ( n = 5) and (b) with open-chest ( n = 7) in whom the retrocardiac lobe was separately ventilated. Pulmonary, lobar...
Articles
Clin Sci (Lond) (1986) 70 (6): 547–554.
Published: 01 June 1986
... Biochemical Society and the Medical Research Society 1986 hypercapnia hypoxia naloxone prochlorperazine somatostatin ventilation ClinicalScience( 1986) 70, 547-554 541 Effects of somatostatin, naloxone and prochlorperazine on the control of ventilation in man D. L. MAXWELL, K. B. NOLOP AND J. M...
Articles
Clin Sci (Lond) (1984) 67 (5): 515–519.
Published: 01 November 1984
... a blind randomized study. 4. Breathing air, arterial saturation at rest was 93% and fell by 7% during exercise. Breathing 60% oxygen, resting saturation was 98% and there was no fall during exercise. 5. Breathing oxygen, ventilation for a given work load was reduced and exercise duration was...
Articles
Clin Sci (Lond) (1983) 65 (5): 521–526.
Published: 01 November 1983
... submaximal work at V̇ o 2 = 1 litre/min rises significantly from 24.3 ±0.8 litres/min at age 64 years to 31.8 ± 1.8 litres/min at age 70 years; the latter value differs significantly from that of the young men (25.6 ± 0.9 litres/min). Similar changes are seen in the ventilation at 75 W and at V̇ co 2 = 1...
Articles
Clin Sci (Lond) (1983) 65 (1): 65–69.
Published: 01 July 1983
...P. M. A. Calverley; R. H. Robson; P. K. Wraith; L. F. Prescott; D. C. Flenley 1. To determine the mode of action of doxapram in man we have measured ventilation, oxygen uptake, CO 2 production, hypoxic and hypercapnic ventilatory responses in six healthy men before and during intravenous infusion...
Articles
Clin Sci (Lond) (1983) 65 (1): 57–63.
Published: 01 July 1983
... 1983 cardiopulmonary receptors coughing mental tasks monosynaptic spinal reflexes Mueller and Valsalva manoeuvres ventilation Clinical Science (1983) 65, 57-63 57 Depressive effect of coughing on spinal monosynaptic reflexes in conscious man D. MAILLARD, A. ROBY A N D J. C. WILLER...
Articles
Clin Sci (Lond) (1983) 64 (5): 487–495.
Published: 01 May 1983
... 1982 17 11 1982 © 1983 The Biochemical Society and the Medical Research Society 1983 carbon dioxide chronic airflow obstruction inspiratory muscles ventilation Clinical Science (1983) 64,487495 487 Role of impaired inspiratory muscle function in limiting the ventilatory response...
Articles
Clin Sci (Lond) (1982) 63 (1): 17–22.
Published: 01 July 1982
... mellitus chemosensitivity transient hypoxia ventilation Clinical Science (1982) 63, 17-22 17 Preservation of the hypoxic drive to breathing in diabetic autonomic neuropathy P . M. A . C A L V E R L E Y , D . J . E W I N G , I . W. C A M P B E L L , P . K . W R A I T H , H . M. B R A S H , B. F. C L A...
Articles
Clin Sci (Lond) (1981) 61 (5): 599–603.
Published: 01 November 1981
... expiratory volume in 1 s (FEV 1.0 ) were within normal ranges and ventilatory responses to CO 2 in the range 5.32-5.99 kPa were not significantly different between patients and normal subjects. However, ventilation in the patients was significantly less than that in normal subjects when the alveolar partial...
Articles
Clin Sci (Lond) (1981) 61 (4): 429–439.
Published: 01 October 1981
... with various measures to enhance repeatability. 2. A high level of reproducibility was obtained in spite of the subjective nature of the assessment. Individual responses were described by the relationship between breathlessness and ventilation. The sensitivity of the method was demonstrated by the use...
Articles
Clin Sci (Lond) (1981) 60 (6): 667–674.
Published: 01 June 1981
... ventilation ( V E ), tidal volume ( V T ) is reduced with a fall in breath duration ( T t ) resulting from a decrease in inspiratory time ( T i ) with no change in expiratory time ( T e ). 4. The break point on the V T / T i relation is lowered. 12 12 1980 2 2 1981 © 1981 The Biochemical...
Articles
Clin Sci (Lond) (1980) 59 (2): 115–121.
Published: 01 August 1980
...H. Clarke; S. Dhingra; N. R. Anthonisen 1. In 18 patients with acute myocardial infarction, we measured ventilation, frequency, inspiratory duration and the pressure at the mouth 0.1 s after the onset of inspiration against an occluded airway; mean inspiratory flow and the fraction of the breathing...
Articles
Clin Sci Mol Med (1978) 54 (1): 9–16.
Published: 01 January 1978
...J. W. Reed; M. Ablett; J. E. Cotes 1. The ventilation and cardiac frequency during progressive exercise and the respiratory responses to breathing carbon dioxide have been measured in 33 female patients with mitral stenosis and in 31 control subjects. Compared with the control subjects, the...
Articles
Clin Sci Mol Med (1977) 53 (1): 93–100.
Published: 01 July 1977
...R. A. Stockley; J. M. Bishop 1. Oxygen breath tests were performed in seven patients with thyrotoxicosis. The inspired air was replaced by oxygen without their knowledge for 20 s and the fall in ventilation was recorded. 2. Ventilation fell significantly in all the patients within 40 s. The mean...
Articles
Clin Sci Mol Med (1977) 52 (3): 269–275.
Published: 01 March 1977
...J. R. A. Rigg; E. M. Inman; N. A. Saunders; S. R. Leeder; N. L. Jones 1. The effect of mental arithmetic tasks on ventilation, breathing pattern, oxygen intake and carbon dioxide output was studied during air breathing and carbon dioxide rebreathing in healthy subjects. 2. Ventilation and breathing...
Articles
Clin Sci Mol Med (1976) 50 (5): 367–373.
Published: 01 May 1976
... ventilation Clinical Science and Molecular Medicine (1976) 50, 367-373. The ventilatory response in severe metabolic acidosis M. FULOP Department of Medicine. Albert Einstein College of Medicine, and Bronx Municipal Hospital Center, Bronx, New York, U.S.A. (Received 15 October 1975) S-Y 1. The ventilatory...
Articles
Clin Sci Mol Med (1976) 50 (2): 109–114.
Published: 01 February 1976
...R. A. Stockley; K. D. Lee 1. Oxygen breath tests were performed in nine patients with diffuse pulmonary infiltration whose resting arterial P o 2 ( P a,o 2 ) ranged from 8·9 kPa to 11·8 kPa. The inspired air was suddenly replaced with oxygen for 30 s and the percentage fall in ventilation over the...
Articles
Clin Sci Mol Med (1975) 48 (3): 235–238.
Published: 01 March 1975
... identical twins ventilation Clinical Science and Molecular Medicine (1975) 48, 235-238. SHORT COMMUNICATION Maximal oxygen uptake, lung volume and ventilatory response to carbon dioxide and hypoxia in a pair of identical twin athletes A. G. LEITCH, L. CLANCY AND D. C. FLENLEY Department of Medicine...
Articles
Clin Sci Mol Med (1974) 46 (4): 539–549.
Published: 01 April 1974
.... 4. The inverse relation between arterial CO 2 tension and hydrogen ion activity suggests that during metabolic acidosis, alveolar ventilation increases in direct proportion to the increased blood hydrogen ion activity. 8 11 1973 © 1974 The Biochemical Society and the Medical Research...
Articles
Clin Sci Mol Med (1974) 46 (3): 347–356.
Published: 01 March 1974
... varied considerably from patient to patient, but in each case the rate of rise was effectively linear with time. The resulting fall in ventilation, measured over 15 s periods, was compared with the P a,o 2 achieved. 3. In most patients the P a,o 2 did not reach hyperoxic levels. The total contribution of...
Articles
Clin Sci Mol Med (1974) 46 (2): 191–206.
Published: 01 February 1974
...S. G. Spiro; E. Juniper; P. Bowman; R. H. T. Edwards 1. A progressive exercise test was performed on forty-four male and twenty-nine female healthy Europeans, aged between 20 and 64 years. Values for cardiac frequency (fH) and ventilation (V̇) were interpolated to standard (submaximal) oxygen...
Articles
Clin Sci Mol Med (1974) 46 (1): 113–123.
Published: 01 January 1974
... co 2 [H + ] metabolic acidosis metabolic alkalosis ventilation Clinical Science and Molecular Medicine (1974) 46, 113-123. THE RELATIONSHIP BETWEEN ARTERIAL Pco, A N D HYDROGEN ION CONCENTRATION IN CHRONIC METABOLIC ACIDOSIS A N D ALKALOSIS J. M. BONE, J. COWIE, A N N E T . LAMBIE AND J. S...
Articles
Clin Sci Mol Med (1973) 45 (1): 99–105.
Published: 01 July 1973
... haemoglobin concentration and low arterial oxygen saturation at rest in air. 5 2 1973 © 1973 The Biochemical Society and the Medical Research Society 1973 ventilation exercise hypoxia congenital heart disease Clinical Science and Molecular Medicine (1973) 45,99-105. THE VENTILATORY...
Articles
Clin Sci (1972) 43 (6): 861–867.
Published: 01 December 1972
...A. S. Rebuck; N. L. Jones; E. J. M. Campbell 1. Changes in ventilation during progressive exercise were measured in eleven normal subjects. Ventilatory response to carbon dioxide at rest was measured in the same subjects using a rebreathing method. 2. The range of ventilatory response to exercise...