David Wainwright Evans

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Because complex organs taken from unequivocally dead people are not suitable for transplantation, human death has been redefined so that it can be certified at some earlier stage in the dying process and thereby make viable organs available without legal problems. Redefinitions based on concepts of "brain death" have underpinned transplant practice for many(More)
BACKGROUND Regular, inhaled beta 2 agonists may increase airway responsiveness in asthmatic subjects. The mechanism is not known but may be via an increase in airway inflammation. A study was undertaken to examine the effect of regular inhaled salbutamol on airway responsiveness to methacholine and hypertonic saline, on the maximal response plateau to(More)
The mitral valve was assessed by echocardiography in 20 patients, aged 27 to 67 years, who subsequently underwent mitral valve replacement. After removal, the mitral valve cusps were examined by direct measurement, radiography, and quantitative calcium extraction. Increased thickness of the E-F echo was found where calcification or fibrosis was present,(More)
The influence of age, sex, and overt ischaemic heart disease on survival after pacing was studied in a population of 427 patients. The median survival for the whole group was 7.75 years. Women between 55 and 74 years and men between 65 and 74 years enjoyed median survivals in excess of 10 years. Patients over 74 years and men with ischaemic heart disease(More)
Time intervals between the onset of the presenting symptom (chest pain) and arrival in a coronary care unit were studied for 221 admissions arranged by conventional means. The median figure for "patient delay" was 60 minutes, for "general-practitioner delay" 20 minutes, for "ambulance delay" 30 minutes, and for "transit delay" 30 minutes. The median "total(More)
A technique for long-term atrial pacing is described. It uses the system whereby power from an external pulse-generator (including battery) is transferred through the intact skin by inductive-coupling. Once installed, there is no requirement for further surgery to effect battery changes, and the patient can control his heart rate over a wide range to suit(More)