Development of a new method for assessing the heart rate increase during tests in human carrying centrifuge.

Unlabelled: Exposition to head to foot accelerations (+Gz) on human carrying centrifuge are associated with increase in heart rate (HR). Sometimes, especially with extremely high HR values it is almost impossible to distinguish between fast sinus rhythm and supraventricular tachycardia which is essential for the safety of the subject and therefore the decision regarding break the centrifuge examination earlier.

Aim: The aim of the work was to answer the question: what is the maximum physiological rise of the sinus heart rate, recorded beat to beat, during tests in the overload centrifuge, which should lead to the suspicion of paroxysmal supraventricular tachycardia?

Materials And Methods: The material tested was an electrocardiogram (ECG) digital records of 150 pilots, achieved during both GOR and ROR tests, carried out in the human centrifuge.

A study of the relationship between the level of anxiety declared by MRI patients in the STAI questionnaire and their respiratory rate acquired by a fibre-optic sensor system.

Magnetic resonance imaging (MRI) patients often experience anxiety-related respiratory disorders, including hyperventilation, but their respiratory indicators are not routinely monitored during scanning. Free from metal parts and immune to electromagnetic radiation, fibre-optic sensors have the potential to better control the patient's condition by providing continuous non-invasive monitoring of the respiratory rate (RR). The study was purposed to assess the relationship between anxiety in MRI patients and their RR acquired by a fibre-optic sensor system.

Cardiac arrhythmias during aerobatic flight and its simulation on a centrifuge.

Introduction: It is well known that accelerations during centrifuge training and during flight can provoke cardiac arrhythmias. Our study was designed to investigate both the similarities and differences between heart rhythm disturbances during flights and centrifuge tests.

Method: There were 40 asymptomatic, healthy pilots who performed two training flights and were also tested in a human centrifuge according to a program of rapid onset rate acceleration (ROR) and of centrifuge simulation of the actual acceleration experienced in flight (Simulation).

[Effect of long-term cardiac training on lipids concentration in patients with chronic heart ischemic disease treated with simvastatin].

Unlabelled: Dyslipidemia worsens a prognosis in patients with chronic heart ischemic disease, who underwent myocardial infarction. Therefore, new methods, besides drugs, are being sought, for optimizing a serum concentration of lipid fractions.

The Aim: An effect of 6-month of ambulatory long-term cardiac rehabilitation on the lipidogram fractions concentration in patients with chronic heart ischemic disease treated with simvastatin, as well as a correlation between lipids changes and cardiac training intensity was assessed.

Centrifuge braking effects on cardiac arrhythmias occurring at high +Gz acceleration.

Abrupt onset and offset of acceleration induces hemodynamic changes that activate a number of reflex cardiovascular responses. At high +Gz on a centrifuge, apparently healthy subjects occasionally develop a serious cardiac arrhythmia such as supraventricular tachycardia or asystole. We report on four such cases and examine the effect of rapid centrifuge braking (1 G x s(-1)) on the arrhythmia.