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Keywords: syncope
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Articles
Clin Sci (Lond) (2015) 129 (2): 107–116.
Published: 24 April 2015
... with classic OH populations. autonomic failure orthostatic hypotension polyneuropathy syncope • We have defined ‘neurogenic hyperOH’ as neurogenic OH in the presence of an upright plasma NE level > 3.55 nmol/l (600 pg/ml). • Neurogenic hyperOH occurs in a substantial minority...
Articles
Clin Sci (Lond) (2015) 129 (2): 169–178.
Published: 24 April 2015
...-body negative pressure (LBNP) until pre-syncope to inflict hypotension. End-tidal carbon dioxide was clamped at baseline levels (isocapnic trial) or uncontrolled (poikilocapnic trial). Middle cerebral artery (MCA) and posterior cerebral artery (PCA) blood velocities (transcranial Doppler; TCD), heart...
Articles
Clin Sci (Lond) (2011) 121 (9): 389–396.
Published: 12 July 2011
..., and that vasodepression would be exaggerated by head-up tilt. We performed pulse contour analyses on blood pressure recordings during CSM in syncope patients during supine rest and head-up tilt. In a subset we simultaneously recorded muscle sympathetic nerve activity supine. During supine rest, systolic blood pressure...
Articles
Clin Sci (Lond) (2007) 113 (10): 401–407.
Published: 12 October 2007
... beneficial effects on IOH. All patients had a clinical diagnosis of IOH based on a consistent history of (pre-)syncope occurring 5–15 s after rising from a supine or squatting position. There was no classic orthostatic hypotension [i.e. ΔSBP >20 mmHg and/or ΔDBP (diastolic BP) >10 mmHg at 3 min...
Articles
Clin Sci (Lond) (2007) 113 (9): 369–374.
Published: 01 October 2007
.... The study protocol was approved by the Leiden University Medical Centre Ethics Review Committee. All participants gave written informed consent. Subjects were excluded if they had a history of recurrent (more than five times) syncope, a known cardiac or neurological disease, or used any medication other...
Articles
Clin Sci (Lond) (2007) 112 (3): 157–165.
Published: 03 January 2007
... of IOH as a cause of syncope in the general population is unknown. In the recent Fainting Assessment Study [ 34 ], the history of 503 consecutive patients with transient loss of consciousness who presented to the Academic Medical Center of the University of Amsterdam (mean age, 52±19; 56% males...
Articles
Clin Sci (Lond) (2003) 105 (1): 119–126.
Published: 01 July 2003
...Giosuè GULLI; Victoria L. COOPER; Victoria CLAYDON; Roger HAINSWORTH Correspondence: Dr Giosuè Gulli (e-mail GiosueGulli@yahoo.it ). 12 11 2002 26 2 2003 2 4 2003 2 4 2003 © 2003 The Biochemical Society 2003 baroreflex heart rate variability syncope...
Articles
Clin Sci (Lond) (2003) 104 (4): 329–340.
Published: 06 March 2003
...Julian M. STEWART; Amy WELDON Simple faint (neurocardiogenic syncope) and postural tachycardia syndrome (POTS) characterize acute and chronic orthostatic intolerance respectively. We explored the hypothesis that vascular function is similar in the two conditions. We studied 29 patients with POTS...
Articles
Clin Sci (Lond) (2003) 104 (2): 119–126.
Published: 14 January 2003
...Elisabeth BELLARD; Jacques-Olivier FORTRAT; Daniel SCHANG; Jean-Marc DUPUIS; Jacques VICTOR; Georges LEFTHÉRIOTIS We determined whether early changes in central haemodynamics, as determined by transthoracic impedance, induced by a 70° head-up tilt (HUT) test could predict syncope. Heart rate...
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...
Articles
Clin Sci (Lond) (1996) 91 (2): 193–200.
Published: 01 August 1996
... and the Medical Research Society 1996 blood pressure hypotension stroke volume syncope Clinical Science (1996) 91, 193-200 (Printed in Great Britain) I93 Finger arterial versus intrabrachial pressure and continuous cardiac output during head-up tilt testing in healthy subjects Wilbert T. JELLEMA, Ben...
Articles
Clin Sci (Lond) (1994) 87 (2): 259–267.
Published: 01 August 1994
... hypotension. 2. Postprandial hypotension is a common disorder of blood pressure regulation in the elderly, associated with falls and syncope. The pathophysiological mechanism is thought to be related to impaired vascular compensation for splanchnic blood pooling after a meal. Since caffeine inhibits...
Articles
Clin Sci (Lond) (1993) 85 (6): 695–700.
Published: 01 December 1993
...J. Timothy Lightfoot; Stuart A. Rowe; Suzanne M. Fortney 1. To determine whether activation of the left ventricular C-fibre mechanoreceptors initiates the vasodepressor reflex that often causes syncope, we exposed six orthotopic cardiac transplant patients and six matched, healthy control subjects...
Articles
Clin Sci (Lond) (1989) 77 (5): 547–553.
Published: 01 November 1989
...M. M. A. E. Wahbha; C. A. Morley; Y. M. H. Al-Shamma; R. Hainsworth 1. This study was undertaken to determine whether, in a group of patients complaining of recurrent syncopal attacks but with no apparent cause, there was evidence of abnormal cardiovascular reflex control. 2. The steady-state...
Articles
Clin Sci (Lond) (1988) 74 (4): 347–350.
Published: 01 April 1988
...B. J. Robinson; R. H. Johnson 1. Syncopal or near syncopal episodes have been observed in five subjects who stood or were tilted and in whom blood samples were being taken. 2. In all subjects bradycardia and hypotension developed before the onset of symptoms. Increases in plasma adrenaline...
Articles
Clin Sci Mol Med (1976) 51 (3): 267–274.
Published: 01 September 1976
.... A striking increase of arginine vasopressin concentration was seen within 4 min of syncope, but there was no change of plasma osmolality, cortisol concentration or renin activity. 30 12 1975 © 1976 The Biochemical Society and the Medical Research Society 1976 plasma volume posture renin...