Page 284 - Hall et al (2015) Principles of Critical Care-McGraw-Hill

188 PART 2: General Management of the Patient

Saline flush Saline
solution

To
patient
Stopcock Flush
Monitor Stopcock
device Proximal
Transducer
Stopcock
Distal
Balloon
Thermistor

FIGURE 28-3. Pulmonary artery catheter with distal lumen open to transducer. Right atrial pressure can be recorded from the proximal lumen by stopcock adjustment.

PAC Insertion

20

0

PAC ~ 40 cm

20

0
FIGURE 28-4. Proximal lumen inadvertently open to pressure transducer during insertion of pulmonary artery catheter (PAC). Top, pressure suddenly increases as the proximal port enters
introducer. Bottom, ventricular ectopy (catheter tip in right ventricle) while the monitor displays a right atrial waveform. Scale in millimeters of mercury.

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