Which statement best describes an arterial monitoring line?

Which statement best describes an arterial monitoring line?

• A. A catheter inserted into an artery attached to a monitor to measure arterial blood pressure
• B. A catheter inserted into a vein for venous pressure
• C. A tube in the airway for ventilation
• D. A tube in the stomach for drainage

Answer: (A)

An arterial monitoring line is an invasive setup where a catheter is placed into an artery and connected to a pressure transducer to provide continuous, beat-by-beat arterial blood pressure readings and allow arterial blood sampling. This setup gives real-time, dynamic blood pressure data and is commonly used in critically ill patients or during major surgery to tightly titrate therapy. It differs from lines placed in veins, which measure venous pressure and are used mainly for fluid administration and venous sampling; an endotracheal tube is used to ventilate the patient, and a gastric tube is used for drainage.

An arterial monitoring line is an invasive setup where a catheter is placed into an artery and connected to a pressure transducer to provide continuous, beat-by-beat arterial blood pressure readings and allow arterial blood sampling. This setup gives real-time, dynamic blood pressure data and is commonly used in critically ill patients or during major surgery to tightly titrate therapy. It differs from lines placed in veins, which measure venous pressure and are used mainly for fluid administration and venous sampling; an endotracheal tube is used to ventilate the patient, and a gastric tube is used for drainage.