Smoking habits of physicians in Canada.
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Biomedical subjects
Publications and source records attributed to A J Phillips.
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Lung cancer mortality in Canada over the period 1936-1964 is reviewed and a forecast is presented of future trends in the death rates, based on cohort analyses. Since 1936 the annual increases in mortality have been greater among individuals over 65 years of age, but in this group no single five-year age-group has contributed the major part to the general increase. Cohort analyses show (a) that the rate of increase of lung cancer has been much slower in generations born after 1906, (b) that the actual death rate will rise more slowly in the future, and (c) that the death rate may become stable within 15 years.
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PURPOSE: A prospective study was performed to assess the frequency and timing of complications after transluminal angioplasty and stent placement with a view to changing our practice and performing these procedures on an outpatient basis. METHOD: A total of 266 angioplasties and 51 stent deployments were attempted on 240 consecutive patients. Immediate complications were documented by the radiologists. The timing and nature of any complications during and beyond the first 24 hr were reported by the vascular surgeons. RESULTS: There were 14 complications in 240 patients, giving a complication rate of 4.8% per vessel segment dilated. There were five major and nine minor complications. Eighty-six percent of complications were evident before the patient had left the angiography suite. All complications were evident within 4.5 hr of the procedure. CONCLUSION: The timing of complications suggests it would be reasonable to perform percutaneous transluminal angioplasties and iliac stenting on an outpatient basis in suitable patients.
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Barium radiology is the investigation of choice in patients who present with dysphagia. The barium column distends the oesophagus and shows the extent and severity of any narrowing that is present. A barium swallow should be performed without delay when a constricting disorder of the oesophagus is suspected.
From the clinical and public health viewpoint, the data from retrospective and prospective investigations justify acceptance of an effective etiological relationship between smoking and disease, especially lung cancer. This conclusion has been reached by a number of official scientific bodies in many countries. From the practical standpoint we must agree that the scientific evidence establishes beyond reasonable doubt that cigarette smoking is a causative factor in the rapidly increasing incidence of human lung cancer. This evidence is adequate for application in clinical preventive medicine and the initiation of public health measures.