Neuraxial Blocks

by Brian Warriner, MD

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    Hello ladies and gentlemen. Welcome back to our ongoing series of lectures on Anesthesiology. Today we're going to talk about Regional Anesthesia and Analgesia. Both, how we can provide anesthesia for surgical procedures, and how we can produce analgesia for postoperative pain management. So the agenda for this lecture will be some definitions, a description of two major Neuraxial blocks, Epidural and Spinal. A description of several Limb blocks, including Brachial plexus block for the upper limb, and some lower limb blocks, including Femoral nerve block and Ankle block. A very brief discussion about Autonomic nervous system blocks for pain and diagnostic purposes. And then a somewhat more expanded discussion of Intravenous regional anesthesia. So the definitions are pretty straightforward actually. The injection of local anesthetics into areas to produce anesthesia sufficient for surgical procedures to be performed without discomfort to the patient. That's Regional Anesthesia. And that's typical of Sub-arachnoid block or Spinal block. It's also typical of what we see with Epidural blocks. With Peripheral nerve blocks it's never quite as clear as that. We certainly can produce, can do surgery with some of these blocks, but in many cases the blocks are inadequate for surgical anesthesia but produce excellent postoperative analgesia. So regional analgesia is the injection of the same local anesthetic into areas of the body to produce analgesia for postoperative pain relief. These blocks are commonly used in upper limb surgery to produce postoperative analgesia. Some of these blocks are sufficient to provide anesthesia for surgery, but the duration of surgery and the position of the patient during surgery results in them being used primarily for analgesia. So, Epidural anesthesia. And this is a slide to give you some idea of the anatomy of the Spinal cord. And you will see as you look at...

    About the Lecture

    The lecture Neuraxial Blocks by Brian Warriner, MD is from the course Anesthesiology: Advanced. It contains the following chapters:

    • Regional Anesthesia and Analgesia
    • Epidural Anesthesia and Analgesia
    • Finding the Epidural Space
    • Spinal Anesthesa and Analgesia

    Quiz for lecture

    Test your knowledge with our quiz for lecture Neuraxial Blocks.

    1. Local anesthetic injected into the epidural or sub-arachnoid space.
    2. The injection of local anesthesia around a nerve root.
    3. A block in which there is selective anesthesia of a limb.
    4. Similar to the block used by dentists during dental procedures.
    1. ...using a spinal needle with a “pencil point“ and a narrow diameter.
    2. ...placing the spinal anesthetic very rapidly in the correct spot.
    3. ...using an epidural needle for the spinal.
    4. ...using an ester local anesthetic rather than an amide local anesthetic.

    Author of lecture Neuraxial Blocks

     Brian Warriner, MD

    Brian Warriner, MD

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