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Keyword: cardiac output
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Articles
Clin Sci (Lond) (2013) 125 (4): 191-198.
Published: 01 May 2013
...Kim Z. Rokamp; Jonatan M. Staalsoe; Martin Gartmann; Anna Sletgaard; Nicolai B. Nordsborg; Niels H. Secher; Henning B. Nielsen; Niels V. Olsen Variation in genes encoding the β 2 -adrenergic receptor ( ADRB2 ) and angiotensin-converting enzyme ( ACE ) may influence Q ̇ (cardiac output). The 46G>...
Articles
Clin Sci (Lond) (2010) 118 (9): 573-581.
Published: 09 February 2010
... (cardiac output) and TPR (total peripheral resistance) in six patients (aged 37–67 years; three women) and age- and gender-matched controls during leg crossing. In the patients, leg crossing increased MAP from 58 (42–79) to 72 (52–89) compared with 84 (70–95) to 90 (74–94) mmHg in the controls. MCA V mean...
Articles
Clin Sci (Lond) (2009) 118 (2): 121-123.
Published: 19 October 2009
...Julian M. Stewart Cardiovascular and autonomic dysfunction have been suggested to underlie the symptoms accompanying CFS (chronic fatigue syndrome). In the present issue of Clinical Science , Hurwitz and co-workers have investigated whether deficits were present in cardiac output and blood volume...
Articles
Clin Sci (Lond) (2009) 118 (2): 125-135.
Published: 19 October 2009
...Barry E. Hurwitz; Virginia T. Coryell; Meela Parker; Pedro Martin; Arthur LaPerriere; Nancy G. Klimas; George N. Sfakianakis; Martin S. Bilsker The study examined whether deficits in cardiac output and blood volume in a CFS (chronic fatigue syndrome) cohort were present and linked to illness...
Articles
Clin Sci (Lond) (2009) 116 (7): 599-606.
Published: 02 March 2009
... underwent echocardiography, including tissue Doppler imaging, determining left ventricular mass, cardiac output, systolic and diastolic velocities, and wall stress. A total of 32 were assessed again at a median of 37 weeks of gestation. Non-pregnant control estimates ( n =9) were obtained by averaging four...
Articles
Clin Sci (Lond) (2007) 112 (5): 315-324.
Published: 01 February 2007
... catecholamines that were required were measured. All of the animals in the BNP group had a significantly better cardiac output and cardiac index at the end of the experiment. Seven out of 10 animals from the control group required catecholamines, whereas only one animal from the BNP group did. Creatine kinase...
Articles
Clin Sci (Lond) (2005) 109 (6): 493-501.
Published: 23 November 2005
...Lysander W. J. Bogert; Ayten Erol-Yilmaz; Raymond Tukkie; Johannes J. Van Lieshout Cerebral blood flow increases upon the transition from rest to moderate exercise, but becomes affected when the ability to raise CO (cardiac output) is limited. HR (heart rate) is considered to contribute...
Articles
Clin Sci (Lond) (2004) 106 (4): 365-369.
Published: 01 April 2004
...Marcel AZABJI KENFACK; Federic LADOR; Marc LICKER; Christian MOIA; Enrico TAM; Carlo CAPELLI; Denis MOREL; Guido FERRETTI Modelflow®, when applied to non-invasive fingertip pulse pressure recordings, is a poor predictor of cardiac output (Q, litre·min -1 ). The use of constants established from the...
Articles
Clin Sci (Lond) (2004) 106 (4): 371-376.
Published: 01 April 2004
...Enrico TAM; Marcel AZABJI KENFACK; Michela CAUTERO; Federic LADOR; Guglielmo ANTONUTTO; Pietro Enrico DI PRAMPERO; Guido FERRETTI; Carlo CAPELLI The beat-by-beat non-invasive assessment of cardiac output (Q, litre·min -1 ) based on the arterial pulse pressure analysis called Modelflow® can be a...
Articles
Clin Sci (Lond) (2004) 106 (4): 407-412.
Published: 01 April 2004
...Marjorie S. PITT; Paul MARSHALL; Jonathan P. DIESCH; Roger HAINSWORTH Portapres® derives continuous estimates of cardiac output from the peripheral pulse and has the potential to be an extremely valuable physiological and clinical tool. We assessed Portapres® estimates of cardiac output in healthy...
Articles
Clin Sci (Lond) (2003) 104 (2): 163-169.
Published: 17 January 2003
... vascular responses to orthostasis have not been assessed. The aim of this study was to evaluate the control of vascular responses to postural stress in FD patients. Measurements of heart rate, blood pressure, cardiac stroke volume and cardiac output (CO), by impedance cardiography, and calf-volume changes...
Articles
Clin Sci (Lond) (2002) 103 (2): 143-149.
Published: 28 June 2002
...Jaap J. REMMEN; Wim R.M. AENGEVAEREN; Freek W.A. VERHEUGT; Tjeerd VAN DER WERF; Hans E. LUIJTEN; Anja BOS; René W.M.M. JANSEN Non-invasive continuous monitoring of cardiac output could be very useful in clinical care and in research settings, particularly in elderly subjects. We studied whether...
Articles
Clin Sci (Lond) (2002) 102 (2): 247-252.
Published: 14 January 2002
...Anders GABRIELSEN; Regitze VIDEBÆK; Morten SCHOU; Morten DAMGAARD; Jens KASTRUP; Peter NORSK Values of effective pulmonary blood flow ( Q EP ) and cardiac output, determined by a non-invasive foreign gas rebreathing method (CO RB ) using a new infrared photoacoustic gas analysing system, were...
Articles
Clin Sci (Lond) (2000) 98 (5): 611-617.
Published: 26 April 2000
... Society © 2000 2000 aldosterone arterial pressure cardiac output kidney liver cirrhosis portal pressure renin sodium retention 611Clinical Science (2000) 98, 611 617 (Printed in Great Britain) Haemodynamic and renal evolution of the bile duct-ligated rat Concepcio! n MARTI!NEZ-PRIETO*, M...
Articles
Clin Sci (Lond) (2000) 98 (5): 545-551.
Published: 04 April 2000
... population-estimated mean values for C (a–v)O 2 in heart failure patients. Correspondence : Dr Agostoni (e-mail piergiuseppe.agostoni@cardiologicomonzino.it ). 22 7 1999 19 10 1999 4 1 2000 The Biochemical Society and the Medical Research Society © 2000 2000 cardiac output...
Articles
Clin Sci (Lond) (1998) 95 (6): 701-708.
Published: 01 December 1998
... within the physiological range (4 pmol/l increment, P < 0.001) and increased cyclic GMP levels ( P = 0.01). BNP infusions induced significant falls in right atrial pressure ( P = 0.048), stroke volume ( P = 0.014) and cardiac output ( P = 0.003) associated with a rise in haematocrit ( P = 0.001...
Articles
Clin Sci (Lond) (1998) 95 (1): 73-81.
Published: 01 July 1998
... studied before and after 72 h of continuous intravenous infusion of recombinant interleukin-2 (18×10 6 i.u.·24 h -1 ·m -2 ) and 48 h post therapy. Cardiac output was measured by impedance cardiography. Effective renal plasma flow and glomerular filtration rate were determined by the renal clearances of...
Articles
Clin Sci (Lond) (1998) 94 (6): 637-643.
Published: 01 June 1998
... clinical and histological criteria in non-alcoholic cirrhotic, alcoholic cirrhotic and non-cirrhotic chronic liver disease. We studied clinical and analytical characteristics, haemodynamic parameters and endotoxin levels in these patients. 3. Cirrhotic patients showed an increase of cardiac output and a...
Articles
Clin Sci (Lond) (1998) 94 (4): 347-352.
Published: 01 April 1998
... and cardiac output had decreased by 39 ± 9% and 26 ± 10% respectively. Little change in mean blood pressure at heart level (+1 ± 7 mmHg) indicated that systemic vascular resistance had increased by 39 ± 24%. The gradual responses to head-up tilt contrasted with the pronounced and rapid circulatory...
Articles
Clin Sci (Lond) (1998) 94 (2): 121-127.
Published: 01 February 1998
.... Thermogenic responses were related to body morphology, age and biochemistry. In addition, thermogenic responses were related to cardiovascular responses by simultaneously measuring blood pressure, pulse rate and cardiac output using Doppler sonography. 3. Resting energy expenditure was predicted by body...
Articles
Clin Sci (Lond) (1997) 93 (3): 195-203.
Published: 01 September 1997
...Ian C. Steele; ANN Moore; Anne-Marie Nugent; Marshall S. Riley; Norman P. S. Campbell; D. Paul Nicholls 1. The role of cardiac output limitation in the pathophysiology of exercise in patients with chronic failure remains undefined. During steady-state submaximal exercise, oxygen uptake is similar...
Articles
Clin Sci (Lond) (1997) 93 (3): 205-211.
Published: 01 September 1997
... responses on approach of an orthostatic faint is wide in the young. 8 1 1997 20 5 1997 © 1997 The Biochemical Society and the Medical Research Society 1997 cardiac output hypotension orthostasis syncope teenagers vasomotor system Clinical Science (1997) 93,205-21 I (Printed in...
Articles
Clin Sci (Lond) (1996) 90 (4): 269-276.
Published: 01 April 1996
...-labelled erythrocytes was performed for assessment of cardiac output, venous occlusion plethysmography to obtain forearm blood flow and Doppler-ultrasonography for portal vein flow. Plasma levels of catecholamines and insulin were determined by radioimmunoassay. 3. Cardiac output increased considerably...
Articles
Clin Sci (Lond) (1996) 90 (2): 105-111.
Published: 01 February 1996
... volunteers. 2. Eight healthy volunteers received infusions of dobutamine at doses of 2, 4 and 6 μg min −1 kg −1 and nitroprusside at doses of 0.5, 1 and 2 μg min −1 kg −1 in an alternate order. 3. V O 2 was determined by indirect calorimetry and cardiac output by electrical bioimpedance. Data were analysed...
Articles
Clin Sci (Lond) (1994) 87 (5): 553-558.
Published: 01 November 1994
... (aged 20–65 years). 2. Finger arterial pressure was monitored. Relative changes in left ventricular stroke volume were computed by a pulse contour method. 3. Tiptoeing increased mean arterial pressure (7 ± 5 mmHg) in the healthy subjects, but not in the patients, whereas cardiac output increased in both...
Articles
Clin Sci (Lond) (1993) 84 (5): 531-535.
Published: 01 May 1993
...-output heart failure. 1 12 1992 27 1 1993 © 1993 The Biochemical Society and the Medical Research Society 1993 cardiac hypertrophy cardiac output laser-Doppler flowmetry renal function thermodilution Clinical Science (1993) 84, 531-535 (Printed in Great Britain) Haemodynamic...
Articles
Clin Sci (Lond) (1993) 84 (3): 263-270.
Published: 01 March 1993
...M. B. Sidery; A. J. Cowley; I. A. MacDonald 1. The cardiovascular responses to high-fat and high-carbohydrate meals (2.5 MJ) were compared in healthy, non-obese elderly subjects (mean age 68 years, range 63–74 years). 2. Measurements of cardiac output, blood pressure, heart rate, calf blood flow...
Articles
Clin Sci (Lond) (1992) 83 (4): 391-397.
Published: 01 October 1992
... Medical Research Society 1992 cardiac output lean body mass maximal O 2 uptake muscle ventilation Clinical Science (1992) 83, 391-397 (Printed in Great Britain) Analysis of factors limiting m imal exercise performance in cystic fibrosis Larry C. LANDS, George J. F. HEIGENHAUSER and Norman L...
Articles
Clin Sci (Lond) (1992) 83 (4): 483-487.
Published: 01 October 1992
...Susan K. Hawley; Kevin S. Channer 1. Nine healthy adult subjects consumed four types of proprietary liquid diet of similar volume and calorific value but of different nutritional composition. The effects on resting cardiac output, mean blood pressure and pulse rate were measured. 2. A significant...
Articles
Clin Sci (Lond) (1992) 83 (2): 149-155.
Published: 01 August 1992
... in blood pressure. 3 2 1992 10 3 1992 © 1992 The Biochemical Society and the Medical Research Society 1992 ageing cardiac output heart rate non-invasive continuous blood pressure orthostatic hypotension postural changes stroke volume total peripheral resistance...
Articles
Clin Sci (Lond) (1991) 81 (6): 727-732.
Published: 01 December 1991
.... 2. Mean arterial blood pressure, heart rate and cardiac output were not changed significantly by l -arginine infusion. However, l -arginine infusion induced a significant elevation of renal blood flow from 50 ± 3 to 94 ± 12 ml/min (means ± sem , P < 0.01). 3. Simultaneous infusion of N G...
Articles
Clin Sci (Lond) (1991) 81 (6): 751-758.
Published: 01 December 1991
... administration cannot be primarily a consequence of oxygen delivery limitation. 8 7 1991 15 7 1991 © 1991 The Biochemical Society and the Medical Research Society 1991 antidiuretic hormone cardiac output hypoxia metabolism oxygen consumption regional blood flows ClinicalScience...
Articles
Clin Sci (Lond) (1990) 79 (3): 221-226.
Published: 01 September 1990
...J. D. Firth; A. F. C. Roberts; A. E. G. Raine 1. The effect of endothelin on the performance of the isolated perfused working rat heart has been examined. 2. A low concentration of endothelin (60 pmol/l) produced a gradual but sustained increase in cardiac output; coronary vascular resistance was...
Articles
Clin Sci (Lond) (1990) 79 (2): 131-138.
Published: 01 August 1990
...Anders Edlund; Alf Sollevi; Birgitta Linde 1. Haemodynamic and metabolic effects of intravenous infusion of adenosine, an endogenous vasodilator, were studied in healthy humans. 2. Catheters were inserted into pulmonary and brachial arteries and into the hepatic and subclavian veins. Cardiac output...
Articles
Clin Sci (Lond) (1990) 78 (6): 591-596.
Published: 01 June 1990
... cardiography, are accurate. 7 2 1990 21 2 1990 © 1990 The Biochemical Society and the Medical Research Society 1990 cardiac output oxygen uptake renal failure Clinical Science (1990) 78, 591-596 591 Cardiac output and oxygen uptake in patients with renal failure C. H. KONG, F. D...
Articles
Clin Sci (Lond) (1989) 77 (5): 547-553.
Published: 01 November 1989
... responses of blood pressure, heart rate and cardiac output to head-up tilting were determined in 67 patients using entirely ‘non-invasive’ methods. In some patients we also studied the immediate response of pulse interval to carotid baroreceptor stimulation by neck suction. 3. Two of the patients developed...
Articles
Clin Sci (Lond) (1989) 76 (6): 673-676.
Published: 01 June 1989
...A. H. Kendrick; A. Rozkovec; M. Papouchado; J. West; G. Laszlo 1. Resting pulmonary blood flow ( Q . ), using the uptake of the soluble inert gas Freon-22 and an indirect estimate of lung tissue volume, has been estimated during breath-holding ( Q . c ) and compared with direct Fick cardiac output...
Articles
Clin Sci (Lond) (1988) 75 (2): 159-165.
Published: 01 August 1988
... mmHg, expressed as two standard deviations of the differences between responses on two occasions, were (mean responses in parentheses): immediate pulse interval, ± 32 (+ 236) ms; steady-state heart rate, ± 2.5 (− 6.5) beats/min; cardiac output ± 0.14 (− 0.59) 1/min; systolic and diastolic blood...
Articles
Clin Sci (Lond) (1988) 74 (1): 17-22.
Published: 01 January 1988
...R. Hainsworth; Y. M. H. Al-Shamma 1. The cardiovascular responses to passive upright tilting were determined in healthy human subjects of various ages using entirely ‘non-invasive’ techniques. Cardiac output was determined by a single breath method and arterial blood pressure by an automatic...
Articles
Clin Sci (Lond) (1987) 73 (6): 613-616.
Published: 01 December 1987
...C. F. M. Weston; J. P. O'Hare; J. M. Evans; R. J. M. Corrall 1. Stroke volume and cardiac output were measured using the Doppler ultrasound technique in 16 normal subjects immersed to the neck in water at 33°C, 35°C, 37°C and 39°C. A standard aortic diameter was assumed and results were expressed...
Articles
Clin Sci (Lond) (1987) 72 (5): 599-604.
Published: 01 May 1987
... renomedullary vasodepressor mechanisms acting directly or indirectly on the resistance vessels. 10 11 1986 3 12 1986 © 1970 The Biochemical Society and the Medical Research Society 1970 2-bromoethylamine hydrobromide cardiac output hypertension kidney renal medullary damage...
Articles
Clin Sci (Lond) (1987) 72 (4): 437-441.
Published: 01 April 1987
...Y. M. H. Al-Shamma; R. Hainsworth; N. P. Silverton 1. This study was undertaken to determine the accuracy of a modification of a single breath method for estimation of cardiac output. The technique incorporated a single rebreathing stage followed by a prolonged expiration. Cardiac output was...
Articles
Clin Sci (Lond) (1987) 72 (4): 423-428.
Published: 01 April 1987
...Stephen A. Smith; Mahmood M. Salih; William A. Littler 1. Beat to beat changes in cardiac output during standardized Valsalva's manoeuvres were recorded using electrical bioimpedance cardiography in 13 normal subjects. 2. Cardiac output increased by 12 ± 5% after 1 s of straining solely because of...
Articles
Clin Sci (Lond) (1986) 71 (3): 323-325.
Published: 01 September 1986
... studied in conscious rats by the radioactive microsphere technique. 2. ANP induced a 540% increase in sodium excretion and a 310% increase in urine flow. Mean arterial pressure decreased by 21 mmHg and the peripheral resistances decreased by 26%, without significant changes in cardiac output. 3. Renal...
Articles
Clin Sci (Lond) (1985) 69 (4): 377-382.
Published: 01 October 1985
... cardiac output (Q). 2. We tested the technique in 21 patients (53 comparisons) with various cardiovascular problems against a thermodilution method, and in four normal subjects at rest and two levels of exercise (50 and 100 W) against a nitrous oxide rebreathing method. 3. We obtained excellent overall...
Articles
Clin Sci (Lond) (1984) 67 (3): 313-319.
Published: 01 September 1984
...G. M. London; M. E. Safar; J. L. Bouthier; R. M. Gitelman 1. Cardiac output, oxygen consumption, total blood volume and mean circulatory transit time were investigated at rest in men with sustained essential hypertension in comparison with normal subjects of the same age and sex. 2. In normal...
Articles
Clin Sci (Lond) (1984) 66 (1): 91-98.
Published: 01 January 1984
...J. M. Ledingham; S. Gofford; S. J. W. Evans 1. Oxygen consumption and delivery (defined as the product of cardiac output, haemoglobin concentration and arterial oxygen saturation) and haemodynamic variables were examined in the conscious resting rat throughout the day and after the expansion of...
Articles
Clin Sci (Lond) (1983) 65 (6): 599-604.
Published: 01 December 1983
...P. Tfelt-Hansen; I.-L. Kanstrup; N. J. Christensen; K. Winkler 1. The effect of intravenous ergotamine on general (blood pressure and cardiac output) and regional (splanchnic, renal and muscular) haemodynamics was studied immediately and 3 h after administration in seven male volunteers. Also...
Articles
Clin Sci (Lond) (1983) 65 (6): 653-660.
Published: 01 December 1983
... were healthy or had indispositions which did not impair cardiac or pulmonary function. 2. Age accounted for less than 10% of total variation in resting values of right atrial, pulmonary artery and wedge pressures, and of cardiac output. 3. The pulmonary artery-wedge pressure gradient and flow...
Articles
Clin Sci (Lond) (1983) 64 (6): 593-599.
Published: 01 June 1983
... differences between the pressor responses for the two modes of contraction. Cardiac output increased significantly only during dynamic exercise. Total peripheral resistance increased by 2.3 ± 1.0 units for static handgrip ( P < 0.05) and by 0.7 ± 0.8 unit ( P > 0.05) for dynamic handgrip. Autonomic...