Estimation of pulmonary blood flow from sinusoidal gas exchange during anaesthesia: a theoretical study.

We simulated the use of simultaneous sinusoidal changes of inspired O2 and N2O (Williams et al., J Appl Physiol, 1994; 76: 2130-9) at fractional concentrations up to 0.3 and 0.

Technology in health care--blessing or curse?

This paper looks at technology and health care in terms of processes (here defined as goal-related, autonomous and self-regulated arrangement of actions) and their interactions. Using this approach, technology is considered to be the quality of the processes we are trying to achieve. However, health care and the life around it is a complex network of closely interacting processes, and through their interactions, processes can influence each other in various ways.

Diagnostic accuracy of organ electrodermal diagnostics. A pilot study.

Objective: To estimate the diagnostic accuracy as well as the scope of utilisation of a new bio-electronic method of organ diagnostics.

Design: Double-blind comparative study of the diagnostic results obtained by means of organ electrodermal diagnostics (OED) and clinical diagnoses, as a criterion standard.

Setting: Department of Surgery, Helen Joseph Hospital, Johannesburg.

Localisation of myocardial ischaemia from the magnetocardiogram using current density reconstruction method: computer simulation study.

A computer simulation study is performed to investigate the method of current density reconstruction to localise myocardial ischaemia. A computer model of the entire human heart is used to simulate the excitation and repolarisation process in eight topographically different cases of myocardial ischaemia. The associated magnetocardiogram is calculated at 37 positions of the KRENIKON biomagnetic measurement equipment.