An arterial line is a thin catheter placed in an artery, usually at the wrist, foot or groin. It is connected to a monitor that shows blood pressure beat by beat, and it lets nurses draw blood samples without repeated needle sticks.

It is used in children with shock, severe breathing problems or unstable circulation, where small changes in blood pressure must be seen at once, which is a routine part of care in a pediatric ICU in Mumbai. The skin is numbed, and the catheter is placed under sterile conditions. The limb is checked for warmth, colour and pulses, and the line is kept clear with a slow flush.

How the Procedure Can Help

It provides instant, accurate readings and allows frequent blood tests, including oxygen and acid levels, with less pain for the child.

Risks and Considerations

Risks include bleeding, blood clots, reduced blood flow to the limb, infection and accidental disconnection. The line is removed as soon as it is no longer needed. Colour change, coldness or swelling of the limb needs immediate attention.