What does the Thermistor Lumen Port connect to?

What does the Thermistor Lumen Port connect to?

• A. Cable that displays temp and/or thermodilution curve on monitor
• B. Connects to saline injectate line
• C. Used for balloon inflation
• D. Provides arterial line pressure

Answer: (A)

The thermistor lumen port is the connection for the temperature sensor at the catheter tip. It links to the monitor with a temperature/thermodilution cable so the monitor can display the blood temperature and the thermodilution curve, which are used to calculate cardiac output. The other ports have different roles: the saline injectate line has its own port for injecting the cold bolus; the balloon inflation lumen inflates the balloon; and arterial pressure comes from the catheter’s pressure-transducer lumen. So this port’s purpose is to transmit temperature data to the monitor, enabling the temperature readout and thermodilution curve.

The thermistor lumen port is the connection for the temperature sensor at the catheter tip. It links to the monitor with a temperature/thermodilution cable so the monitor can display the blood temperature and the thermodilution curve, which are used to calculate cardiac output. The other ports have different roles: the saline injectate line has its own port for injecting the cold bolus; the balloon inflation lumen inflates the balloon; and arterial pressure comes from the catheter’s pressure-transducer lumen. So this port’s purpose is to transmit temperature data to the monitor, enabling the temperature readout and thermodilution curve.