Why the study?
Does tilting to 30° from the horizontal affect plasma catecholamine levels in normal volunteers?
Does tilting to 30° from the horizontal affect plasma catecholamine levels in normal volunteers?
Tilting to 30 degrees induces a transient increase in plasma catecholamines in normal volunteers without hemodynamic changes.
Transient catecholamine rise during 30° tilt without hemodynamic change in normals; leaves open relevance to orthostatic protocols or patients.
The effect on the plasma adrenaline and noradrenaline levels of tilting normal volunteers to 30° from the horizontal was studied. Both the adrenaline and noradrenaline levels rose significantly. This rise was of a transient nature, both the adrenaline and noradrenaline levels were approaching the resting levels 25 min after tilting. Neither the pulse rate nor blood pressure was affected by tilting.
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Flück et al. (1973) studied this question.
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