OB Anesthesia

Today, I’m on call covering OB.

MGH: OB anesthesia Q&A for patients

BWH: OB anesthesia Q&A for patients

IARS 2010: OB anesthesia in the 21st century

IARS 2011: OB anesthesia update

A&A 2013: A Randomized Controlled Comparison of Epidural Analgesia and Combined Spinal-Epidural Analgesia in a Private Practice Setting: Pain Scores During First and Second Stages of Labor and at Delivery

Indian J Anesthesia 2006: Acute Pain – Labour Analgesia

Presentation on mobile epidural

2014: CONTINUOUS VERSUS PATIENT-CONTROLLED EPIDURAL ANALGESIA FOR LABOUR ANALGESIA AND THEIR EFFECTS ON MATERNAL MOTOR FUNCTION AND AMBULATION

June 2011: Update on rural OB anesthesia

Oct 2013: Presentation on Labor analgesia. Epidural vs CSE, bolus v infusions

To epidural or not to epidural. That is the question.

My Reddit Comment

A great YouTube video on what an epidural is and what it will feel like.

YouTube vid of a real epidural placement ** Needles are involved in this one**

Lately, I’ve been changing my regimen for pain control with PCEA.  It seems most of my partners use a 10ml/hr basal rate, 5ml bolus dose, 10 minute lockout, and 30 ml/hr max.

My current strategy for PCEA (0.0625% bupi + 2mcg/ml fentanyl):

  • 5ml/hr basal rate
  • 10ml bolus
  • 20 minute lockout
  • 35 ml/hr max

Anesth Analges 2007: A Comparison of a Basal Infusion with Automated Mandatory Boluses in Parturient-Controlled Epidural Analgesia During Labor.

ASA Nov 2001: PCEA during labor

Br J Anaesth 2010:Labour analgesia and obstetric outcomes.

Effect of Intrathecal Bupivacaine Dose on the Success of External Cephalic Version for Breech Presentation: A Prospective, Randomized, Blinded Clinical Trial

Neuraxial anesthesia in the non-pregnant patient

Anesthesiology Research and Practice 2012: Recent advances in epidural analgesia.

Br J Anaesth 2012: Failed epidural: causes and management.

From my blog:

Adductor Canal Blocks #adductor #regional #anesthesia #femoral #blocks

What is the adductor canal?

Why all this talk about an adductor canal block (ACB)?

For years, femoral nerve blocks (FNB) have been the gold standard for pain control in more invasive knee/lower leg surgeries (total knees, ACLs, etc.).  More recently, adductor canal blocks have been gaining in popularity over femoral nerve blocks because there seems to be less motor blockade from ACB than FNB.  This is important because it decreases fall risk and allows earlier patient ambulation while also providing adequate analgesia.

Anesthesiology Mar 2014. Kim et al. Adductor Canal Block versus Femoral Nerve Block for Total Knee Arthroplasty: A Prospective, Randomized, Controlled Trial.

From the ASA 2017:

Virtual Anatomy lab for regional:

  • Femoral nb: fem art, Top of iliacus muscle, within fasc iliaca. Flat nerve. Want local anesthesia (LA) spread going under femoral artery (FA). Does hip joint capsule > Adductor CB (hip fractures, not THA). Catheters to POD3. Fascia iliaca more cranial than inguinal crease to get hip jt nerves. Do inplane to avoid bowel.
  • Adductor Canal block: nerve sits on lateral side of FA. Want FA when dives under Sartorius muscle. Aim for bottom of FA to get under membrane. Block the Nerve to Vastus medialis nerve also (not effect motor). Nerve bt vastus med and sartorius. Looks like it’s in the membrane bt muscles. Want proximimal sartorius (pain and strength better)

 

How to place an adductor canal block

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Overview with quiz

Youtube video of ultrasound-guided ACB – Nov 2014

Youtube video of ultrasound-guided ACB – Apr 2014

Ultrasoundblock.com: Ultrasound-guided ACB with pics and video

Paravertebral block basics and cancer recurrence #paravetebral #block #regional #ultrasound #anesthesia #cancer

From J Anaesthesiol Clin Pharmacol. 2011 Jan-Mar; 27(1): 5–11.
Why do paravertebral blocks?
Paravertebral blocks and decreased cancer recurrence
Paravertebral block techniques
From NYSORA

But wait… what about the potential side effects/adverse events from a paravertebral block?

Why not do a TIVA with propofol and dexmetetomedine and local anesthesia via surgeon?  Where’s that study to compare?

** Update **  July 20, 2016 –> What about the PEC 1&2 Blocks as well as Serratus block?

Prolonging blockade with adjuvants: