Study: NCT02652975

Intervention type: PROCEDURE
Group type: EXPERIMENTAL
Intervention: Venous occlusion plethysmography
Description: To characterize endothelial function in vivo the effect of vasodilatating substances is measured in the forearm circuit. The substances is administered via a thin catheter placed in the Brachial artery near the elbow in local anesthesia. Once the vessels dilate, the blood flow in the forearm will increase and the flow change is a measure of the vasodilatory capacity of that substance. The change is measured with classical venous occlusion plethysmography. The method described is established at Aarhus University Hospital and has been used for several decades to illustrate the effect of vasoactive drugs on the human circulation, meaning it is a proven and well documented method.

Intervention type: PROCEDURE
Group type: EXPERIMENTAL
Intervention: Venous occlusion plethysmography
Description: To characterize endothelial function in vivo the effect of vasodilatating substances is measured in the forearm circuit. The substances is administered via a thin catheter placed in the Brachial artery near the elbow in local anesthesia. Once the vessels dilate, the blood flow in the forearm will increase and the flow change is a measure of the vasodilatory capacity of that substance. The change is measured with classical venous occlusion plethysmography. The method described is established at Aarhus University Hospital and has been used for several decades to illustrate the effect of vasoactive drugs on the human circulation, meaning it is a proven and well documented method.

Intervention type: PROCEDURE
Group type: EXPERIMENTAL
Intervention: Venous occlusion plethysmography
Description: To characterize endothelial function in vivo the effect of vasodilatating substances is measured in the forearm circuit. The substances is administered via a thin catheter placed in the Brachial artery near the elbow in local anesthesia. Once the vessels dilate, the blood flow in the forearm will increase and the flow change is a measure of the vasodilatory capacity of that substance. The change is measured with classical venous occlusion plethysmography. The method described is established at Aarhus University Hospital and has been used for several decades to illustrate the effect of vasoactive drugs on the human circulation, meaning it is a proven and well documented method.

Intervention type: PROCEDURE
Group type: EXPERIMENTAL
Intervention: SphygmoCor
Description: Applanation tonometry (pulse wave velocity and central blood pressure/arterial stiffness): The central blood pressure and the augmentation index is estimated from the shape of the radial pulse wave measured with a tonometer.~Pulse wave velocity (PWV) is calculated from the average difference between the pulse pressure wave measured with a tonometer and the R in an ECG recorded simultaneously.

Intervention type: PROCEDURE
Group type: EXPERIMENTAL
Intervention: SphygmoCor
Description: Applanation tonometry (pulse wave velocity and central blood pressure/arterial stiffness): The central blood pressure and the augmentation index is estimated from the shape of the radial pulse wave measured with a tonometer.~Pulse wave velocity (PWV) is calculated from the average difference between the pulse pressure wave measured with a tonometer and the R in an ECG recorded simultaneously.