"improving intensive care in Scotland"

The seldinger technique

Monitoring seldinger 1

Figure 9.1. A needle or cannula is inserted in the vessel.

Monitoring seldinger 2

Figure 9.2. Blood is aspirated.

Monitoring seldinger 3

Figure 9.3. The syringe is removed.

Monitoring seldinger 4

Figure 9.4. A guidewire is inserted through the needle or cannula.

Monitoring seldinger 5

Figure 9.5. The guidewire is inserted through the needle or cannula into the vessel, the needle/cannula is then removed leaving the guidewire in the vessel.

Monitoring seldinger 6

Figure 9.6. The invasive line is inserted over the guidewire into the vessel.

Monitoring seldinger 7

Figure 9.7. The invasive line is positioned in its position in the vessel.

Monitoring seldinger 8

Figure 9.8. The guidewire is removed. Watch for bleeding in arterial lines and air embolism for central lines.

Monitoring seldinger 9

Figure 9.9. The invasive line is fixed in its final position. This is usually done with a suture.

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