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Flashcards in Sensors Deck (14):
1

Open loop refers to what type of sensors

DON'T respond to specific physiologic function

2

Examples of open loop sensors

Piezoelectric // Accelerometer

3

Partial open loop also exist - 2 examples

Temperature // Respiration rate

4

Closed loop sensors respond to what

Physiological changes

5

Examples of closed loop sensors

QT sensor
MV
O2 Sat

6

Is there an advantage to Closed vs. Open sensors

No clinical advantage

7

Closed loop sensors measure effect and then modify their output accordingly, which is known as

Rate modulation

8

Negatives of open loop sensors

No direct relationship between levels of activity and metabolic demand

Susceptible to environmental noise

Susceptible to rate increases due to pressure on the can

Struggles to respond to cycling and other stationary exercise

9

MV sensors measure what

Thoracic impedance

10

Thoracic impedance is measured with what

Lead and can in a tripolar fashion

11

Thoracic Impedance pulses are delivered how often

50 milliseconds

12

Thoracic impedance increases with inspiration TRUE/FALSE

TRUE

13

Thoracic impedance decreases with expiration TRUE/FALSE

TRUE

14

MOST study found what

Patients with blended sensors had significantly worse physical function