Guide Wire

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Troubleshooting

No flashback - insert the needle slightly deeper or withdraw slightly and reattempt at a slightly different angle
Not pulsating blood - potentially in a vein
Unable to advance the guidewire - withdraw the guidewire and make sure that there is flashback of blood. If there is, then gently try to advance the guidewire further. If the guidewire continues to meet resistance then withdraw and start again.

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