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Arts and Humanities

Faculty of Health and Behavioural Sciences - Papers (Archive)

Series

2009

Cardiac

Articles 1 - 3 of 3

Full-Text Articles in Social and Behavioral Sciences

Contribution Of Australian Cardiologists, General Practitioners And Dietitians To Adult Cardiac Patients' Dietary Behavioural Change, Sylvia Pomeroy, Anthony Worsley Jan 2009

Contribution Of Australian Cardiologists, General Practitioners And Dietitians To Adult Cardiac Patients' Dietary Behavioural Change, Sylvia Pomeroy, Anthony Worsley

Faculty of Health and Behavioural Sciences - Papers (Archive)

Aim: To investigate the use of behavioural change techniques by cardiologists, general practitioners and dietitians in adult cardiac patients within 12 months of their cardiac event. Method: Quantitative cross-sectional surveys. Frequency analyses were conducted on the respondents’ answers to questionnaire items. Chi-squared test of independence compared responses of the three professional groups on the questionnaire items. Analyses of variance were conducted to explore the impact of the independent variables: age, sex and time worked on the behavioural change techniques used by the respondents. Results: The respondents included 248 general practitioners (30% response), 189 cardiologists (47% response) and 180 dietitians (60% …


Erps And The Evoked Cardiac Response To Auditory Stimuli: Intensity And Cognitive Load Effects, Robert J. Barry, Carlie Lawrence Jan 2009

Erps And The Evoked Cardiac Response To Auditory Stimuli: Intensity And Cognitive Load Effects, Robert J. Barry, Carlie Lawrence

Faculty of Health and Behavioural Sciences - Papers (Archive)

The evoked cardiac response (ECR) may be described as the sum of two independent response components: an initial HR deceleration (ECR1), and a slightly later acceleration (ECR2), hypothesized to reflect stimulus registration and cognitive processing load, respectively. This study investigated processing load effects in the ECR and the event-related potential (ERP). Stimulus intensity was varied within subjects, and cognitive load was varied between subjects, in a counting/no counting task with a long interstimulus interval. The ECR showed a significant effect of counting, but not intensity. ERPs showed the expected obligatory processing effects in the N1, and substantial effects of cognitive …


Cardiac Electrophysiology During Progressive And Controlled Dehydration: Inferences From Ecg Analysis During Steady-State Exercise And Recovery, Gregory E. Peoples, M. Brown, Anne M.J Van Den Heuvel, Pete Kerry, Nigel A.S. Taylor Jan 2009

Cardiac Electrophysiology During Progressive And Controlled Dehydration: Inferences From Ecg Analysis During Steady-State Exercise And Recovery, Gregory E. Peoples, M. Brown, Anne M.J Van Den Heuvel, Pete Kerry, Nigel A.S. Taylor

Faculty of Health and Behavioural Sciences - Papers (Archive)

When fluid intake is insufficient to match sweat losses, dehydration develops. It is well established that dehydration impacts unfavourably upon cardiovascular function, including cardiac output and peripheral blood flow (Gonzalez-Alonso et al., 1998). However, the limitations of cardiac electrophysiology in the dehydrated state are not known. In light of possible electrolyte imbalances, particularly when water deficit moves towards 7% of total body mass, it is worth considering the possibility of adverse conduction changes, as reflected within the electrocardiogram (ECG), may accompany electrolyte loss. In addition, the ECG can also be employed to investigate other cardiac limitations, such as myocardial ischaemia. …