An<unk>  is a thin catheter inserted into an artery. It is most commonly used in intensive care medicine to monitor the blood pressure real-time (rather than by intermittent measurement), and to obtain samples for<unk>  blood gas measurements. It is not generally used to administer medication. An<unk>  is usually inserted in the wrist (radial artery), armpit (axillary artery), groin (femoral artery), or foot (pedal artery).
Arterial line
Central venous catheter
Catheter
French catheter scale
AutoPulse machine
Guidewire prowater
Intravascular ultrasound
Patch Adams