126
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Nast PF, McDonald L. Planning the employee fitness program. OCCUPATIONAL HEALTH & SAFETY (WACO, TEX.) 1981; 50:27-9, 52. [PMID: 7290550] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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127
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Abstract
A case study of chronic depression is presented. It is argued that in some cases of depression, the appropriate treatment may focus on the social contingencies (such as attention and comfort) which maintain depressive behavior, rather than on the events which elicit depression. Depression may thus be considered an operant and manipulated much as any other operant. The present treatment consisted of self-administered aversive consequences for onset of depression, and self-administered positive consequences for the termination of depression. Results clearly support the notion that the subjective experience of depression may be successfully modified by operant self-control techniques.
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128
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McDonald L, Sullivan A, Sturner WQ. Zinc concentrations in vitreous humor: a postmortem study comparing alcoholic and other patients. J Forensic Sci 1981; 26:476-9. [PMID: 7252462] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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129
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Caudwell R, Caldwell F, Kummant I, McDonald L. Brief reports. PHYSICIAN SPORTSMED 1981; 9:21-5. [PMID: 27452841 DOI: 10.1080/00913847.1981.11711003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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130
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McDonald L. Determination of brain death via pulsatile echoencephalography. JOURNAL OF NEUROSURGICAL NURSING 1978; 10:150-5. [PMID: 263759] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
For cerebral death to occur there must be many levels of cerebral function destroyed. Cortical and subcortical irreversible damage is evident by unresponsiveness to any stimuli. Brain stem and basal ganglia damage is indicated by absence of spontaneous respirations, cephalic reflexes, and thus cerebral circulation. All elements of the criteria for cerebral death must be met. The decision should be made by the attending physician in consultation with his peers. The life support mechanisms should be discontinued after the diagnosis of cerebral death has been made. Absence of pulsatile echoes means absence of cerebral circulation and cerebral function, or a definitive diagnosis of cerebral death. It is a final parameter in the criteria and allows definite measures to be taken. But it behooves one to remember that this phenomenon of cerebral death makes organ donation and transplantation possible. It has not been created in order to supply the needs for organ transplant!
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131
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Gahl K, Rees S, Sutton R, Caspari P, Lairet A, McDonald L. Left ventricular contraction in coronary heart disease. Clin Radiol 1978; 29:113-8. [PMID: 639447 DOI: 10.1016/s0009-9260(78)80211-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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132
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Abstract
Mitral reguritation is a relatively common finding in coronary heart disease. In this series of 127 patients, selected with a view to coronary or left ventricular surgery on the basis of severity of symptoms, the incidence was 39 (31%). Mitral regurgitation is significantly more common in patients with a history or electrocardiographic evidence of previous myocardial infarction. Clinically it may present as a pan- or late systolic or even a mid-systolic, ejection type murmur at the apex or at the left sternal edge; but in 39 per cent of the patients with angiographic mitral regurgitation no murmur was present. Angiographically important mitral regurgitation (grades 2-4/4) was usually associated with a systolic murmur; this finding was independent of ejection fractions. Left ventricular enlargement clinically or radiographically is likely to accompany mitral regurgitation but left atrial enlargement (electrocardiographically or on chest x-ray) is a more reliable pointer to mitral regurgitation and pulmonary venous hypertension is even more strongly suggestive of its presence. The electrocardiographic signs of papillary muscle infarction were rare in this series (15%) and were not related to angiographic mitral regurgitation. There was no difference in the incidence of mitral regurgitation in association with anterior or inferior myocardial infarction or in distribution of coronary artery disease. There is, however, a higher incidence of mitral regurgitation in more severe coronary arterial disease (P less than 0-05). The incidence of mitral regurgitation is significantly higher with reduction in left ventricular ejection fraction (P less than 0-001), with rise in the left ventricular end-diastolic pressure (P less than 0-02), and with abnormal contraction patterns, but the severity of mitral regurgitation is not significantly related to these findings.
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133
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McDonald L. Temporal lobe epilepsy. JOURNAL OF NEUROSURGICAL NURSING 1976; 8:89-96. [PMID: 1050372 DOI: 10.1097/01376517-197612000-00004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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134
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McDonald L. Carotid cavernous sinus fistula. JOURNAL OF NEUROSURGICAL NURSING 1976; 8:23-7. [PMID: 1047091 DOI: 10.1097/01376517-197607000-00007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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135
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Abstract
All cases of cardiac infarction, acute coronary insufficiency and sudden death occurring in residents of the London Borough of Tower Hamlets below age 65 were registered over nearly three years, and survivors were followed up for one year. The attack-rate in men aged 45-64 years was 1 per 100 per annum but the recurrence-rate in survivors was 1 per 100 per month. Immigrants from Asia had more than the average, and those from the Carribean one tenth of the average attack-rate. Although it was unusual for general practitioners to manage cases at home by choice, nonetheless two-thirds of the deaths happened outside hospital and half of these were not witnessed. Half of those suffering coronary heart-attacks had a previous history of coronary disease and a sizable minority were already unfit for work. Approximately half of those attacked were alive at one year.
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136
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Patterson D, Gibson D, Gomes R, McDonald L, Olsen E, Parker J, Ross D. Idiopathic calcified myocardial mass. Thorax 1974; 29:589-94. [PMID: 4279467 PMCID: PMC470205 DOI: 10.1136/thx.29.5.589] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Patterson, D., Gibson, D., Gomes, R., McDonald, L., Olsen, E., Parker, J., and Ross, D. (1974).Thorax,29, 589-594. Idiopathic calcified myocardial mass. Myocardial calcification can be subdivided into three groups—metastatic, dystrophic or an extension inwards from the pericardium. This case in which the calcified myocardial mass was initially delineated by radiography and by echocardiography and subsequently removed does not fit into any subdivision and has been termed idiopathic.
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137
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Layton C, Monro J, Brigden W, McDonald A, McDonald L, Weaver J. Proceedings: Systemic arterial pressure after homograft aortic valvar replacement. Heart 1974; 36:400-1. [PMID: 4842631] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
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138
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Petch M, Somerville J, Ross D, Ross K, Emanuel R, McDonald L. Replacement of the mitral valve with autologous fascia lata. BRITISH HEART JOURNAL 1974; 36:177-81. [PMID: 4818149 PMCID: PMC458814 DOI: 10.1136/hrt.36.2.177] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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139
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Layton C, Monro J, Brigden W, McDonald A, McDonald L, Weaver J. Systemic hypertension after homograft aortic valvar replacement. A cause of late homograft failure. Lancet 1973; 2:1343-7. [PMID: 4128051 DOI: 10.1016/s0140-6736(73)93320-5] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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140
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Burian W, Patch M, Sutton R, McDonald L. Normal electrocardiogram in severe angina pectoris requiring coronary venous bypass graft. Heart 1973; 35:552. [PMID: 4541446] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
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141
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Oh W, Hickman R, Emanuel R, McDonald L, Somerville J, Ross D, Ross K, Gonzelëz-Lavin L. Heart valve surgery in 114 patients over the age of 60. Heart 1973; 35:174-80. [PMID: 4266124 PMCID: PMC458585 DOI: 10.1136/hrt.35.2.174] [Citation(s) in RCA: 27] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
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142
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Somerville J, Ross D, Sachs G, Emanuel R, McDonald L. Long-term results of pulmonary autograft replacement for aortic-valve disease. Lancet 1972; 2:730-4. [PMID: 4116145 DOI: 10.1016/s0140-6736(72)92023-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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143
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144
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Gahl K, Caspari P, Pearson M, Sutton R, McDonald L. Apical systolic murmurs related to mitral regurgitation at angiography in ischemic heart disease. Heart 1972; 34:965. [PMID: 5075328] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
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145
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146
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Ross D, Sutton R, Dow J, Gonzalez-Lavin L, Hendrix G, Jefferson K, McDonald L, Petch M, Smithen C, Sowton E. Venous graft surgery in treatment of coronary heart disease. BRITISH MEDICAL JOURNAL 1972; 2:644-8. [PMID: 4537450 PMCID: PMC1788429 DOI: 10.1136/bmj.2.5814.644] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Sixty-seven patients have had aortocoronary venous graft bypass surgery by one surgeon for the relief of symptoms of severe coronary heart disease, including eight emergency operations. The overall operative, hospital, and late mortality was low in patients with favourable myocardial function and no previous myocardial infarction. There was a 7% mortality in patients with a normal preoperative chest radiogram, 8% mortality when the left ventricular end-diastolic pressure was normal preoperatively, and a 5% mortality in patients who had normal left ventricular angiograms. The overall mortality in all elective operations for cardiac pain resistant to medical treatment was 15.8%. 89% of survivors improved; 67% are pain-free. Exercise tolerance in survivors is increased by 135%, atrial pacing results are improved by 10%. Left ventricular end-diastolic pressure is unchanged. Left ventricular function on angiography is improved. The improvement in left ventricular function assessed objectively correlates positively with vein-graft patency, as does freedom from angina pectoris.
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147
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Layton CA, McDonald A, McDonald L, Towers M, Weaver J, Yacoub M. The syndrome of absent pulmonary valve. Total correction with aortic valvular homografts. J Thorac Cardiovasc Surg 1972; 63:800-8. [PMID: 5028320] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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148
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Sutton R, Gonzalez-Lavin L, Jefferson K, McDonald L, Petch AM, Ross D. Venous grafts in treatment of coronary heart disease. I. Preoperative and operative findings. Heart 1972; 34:208. [PMID: 5007825] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
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149
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McDonald L, Pearce HL, Radley R. Teacher training: which way next? SPECIAL EDUCATION 1971; 60:6-9. [PMID: 5133740] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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150
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Smithen CS, Petch M, Sutton R, McDonald A, Ross D, Sowton GE, McDonald L. Coronary heart disease treated and untreated by venous grafts. Proc R Soc Med 1971; 64:1307-10. [PMID: 5131299 PMCID: PMC1813187] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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