The ... is/are used as landmark(s) to locate the ... and ... interspinous space for intrathecal injection.Posterior superior iliac crests; intercristal line; L4/L5Posterior superior iliac crests; intercristal line; L2/L3Posterior superior iliac spines; L5 vertebra, L3/L4Posterior superior iliac crests; intercristal line; L5/L6L2 vertebra; intercristal line; L4/L5
Question
The ... is/are used as landmark(s) to locate the ... and ... interspinous space for intrathecal injection.Posterior superior iliac crests; intercristal line; L4/L5Posterior superior iliac crests; intercristal line; L2/L3Posterior superior iliac spines; L5 vertebra, L3/L4Posterior superior iliac crests; intercristal line; L5/L6L2 vertebra; intercristal line; L4/L5
Solution
The correct answer is "Posterior superior iliac crests; intercristal line; L4/L5".
Here's the step-by-step explanation:
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The posterior superior iliac crests are the bony prominences at the back of the pelvis.
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The intercristal line is an imaginary line drawn between these two points (the top of the iliac crests).
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This line generally crosses the spine at the level of the fourth lumbar vertebra (L4).
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Therefore, the space between the fourth and fifth lumbar vertebrae (L4/L5) is located just below this line.
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This is the typical location for an intrathecal injection, which is an injection into the space around the spinal cord.
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