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Biomedical subjects

D Cameron

Publications and source records attributed to D Cameron.

At least 73 records · Page 4Linked to original sources
PubMed1987

Establishment and impact of a dementia unit within the nursing home.

Thirty-two demented, elderly residents of a nursing home were admitted to a specially designed dementia unit. Each patient was assessed three times: prior to admission, and at four and 12 months after admission to the unit. Patients were evaluated using a modified version of a previously published assessment scale as well as with a standardized New York State numerical rating system. There was an increased level of functioning in both mental and emotional status and basic functions of daily living at both four (P less than or equal to 0.001) and 12 months (P less than or equal to 0.005). The improvement in scores was maintained over a prolonged time period, despite the expectation of progression of the dementing process. There was no change noted on the New York State assessment. Our data suggest that a select group of demented elderly can benefit from being placed on a specialized dementia unit.

Aged↗
PubMed1983

John Snow, the broad street pump and modern epidemiology.

John Snow was a genius in epidemiology. His achievement was to evolve an elegant, internally and externally consistent theory which concerned the mechanisms and processes involved in every aspect of the subject he had chosen to study. In order to do this he did not restrict himself to any method. He used all skills available to himself and his colleagues. He published his theory, and practical suggestions for the prevention of cholera arising out it, both internally in medical meetings and to the medical press, and to the public in the form of pamphlets and in reports addressed to the appropriate authority. This surely should be the objective of all epidemiological work.

Cholera↗
PubMed1983

On line (real time) quantitative measurement of premature ventricular beats.

A real time system for graphically displaying premature ventricular beat trends is described. The system consists of analog detector circuits coupled to a Fortran based software program for premature ventricular beat processing. The software program runs four independent channels and has three available analysis modes: a "counting" mode which provides a running total of counts to date; an "averaging" mode which displays average number of events over time, and a "ratio" mode which provides an output reflecting changes in the ratio of premature ventricular beats to all beats. Various scale factors can be applied to accommodate differing background states. The system's strengths lie in its simplicity, accuracy, and simultaneous analog display of both the original ECG signal as well as the derived quantitative data.

Cardiac Complexes, Premature↗
PubMed1983

Initial experience with universal pacemakers.

Thirty-five patients were implanted with the Sequicor DDD pacemaker between September 1, 1981 and March 1, 1982. The mean age was 61.7 years (range, 17-88). According to their ECGs, the patients fell into two distinct groups--those with A-V block and those with sick sinus syndrome. Our initial experience has indicated an excellent electronic component function (except for 1 discrepant reed switch); high battery drain of the Sequicor; complications similar to those seen with DVI or VVI pacing; and an increase in the hemodynamic benefits resulting from DDD as compared to DVI or VVI pacing in 70% of patients.

Adolescent↗
PubMed1983

Interactions between the autonomic nervous system and tachycardias in man.

We have endeavoured to present an integrated and dynamic overview of the interaction between the autonomic nervous system and cardiac arrhythmias. Our purpose was not to be comprehensive, detailed, or all inclusive but to present a clinically relevant summary of some of the areas where autonomic tone may be pertinent. Clearly, most arrhythmias are not the result of a primary autonomic nervous system disorder. However, subtle and overt alterations in autonomic tone, interacting with rate, pressure, cardiac volume, contractility, and the intrinsic myocardial electrophysiologic properties likely exert a critical influence on many cardiac arrhythmias. We wish to emphasize that autonomic effects may be temporarily concealed or overwhelmed during certain states or by the administration of drugs. However, the modulating role of neural tone and neurotransmitters is almost always present, contributing significantly to the outcome of therapy.

Anti-Arrhythmia Agents↗
PubMed1981

Radiology of sigmoid volvulus.

Sigmoid volvulus is often a surgical emergency. The diagnosis is usually reached on the basis of both clinical and radiologic assessment. A review of the radiologic findings in 20 patients diagnosed as having sigmoid volvulus is presented. Typical radiographic features are illustrated. Reasons for their absence in certain cases are discussed. [Key words: Volvulus, sigmoid; Diagnostic problems; Sigmoid, volvulus].

Barium Sulfate↗