ULTRASOUNDBLOCK.com editor and principal author

Michael J. Fredrickson, MBChB, FANZCA, MD, PhD



Current work description

1. Full time clinical anaesthesiologist - private practice setting, Auckland, New Zealand.

2. Honorary clinical senior lecturer, Department of Anaesthesiology, University of Auckland.



1. M.B.Ch.B., November 1990

2. F.A.N.Z.C.A., January 2000

3. Doctor of Medicine (M.D.), May 2010 (Thesis Title: Ultrasound guided continuous brachial plexus block for ambulatory analgesia after shoulder surgery)

4. Doctor of Philosophy (PhD.), April 2014 (Thesis Title: Ultrasound guided continuous brachial plexus block for ambulatory analgesia after shoulder surgery – Part 2)

                             fanzca logoouniversity-of-auckland-logo



Editorial Boards

Associate Editor – Regional Anesthesia and Pain Medicine

Reviewer – British Journal of Anaesthesia, Anesthesia & Analgesia, Anaesthesia and Intensive Care, Pediatric Anesthesia



3. Fredrickson MJ, Harrop-Griffiths W. Death by regional block: can the analgesic benefits ever outweigh the risks. Anaesthesia. 2012;67: 1063-75

2. Ilfeld BM, Fredrickson MJ, Mariano ER. Ultrasound guided perineural catheter insertion: three approaches but few illuminating data. Reg Anesth Pain Med. 2010:123-6

1. Fredrickson MJ, Kennedy RR. Regional anaesthesia for pain relief after surgery. NZMJ 2010;15:1324 

Original Articles


28. Fredrickson MJ. Randomised comparison of an end-hole, triple-hole and novel six-hole catheter for continuous interscalene analgesia. Anaesth Intensive Care. 2014 Jan;42(1):37-42. 

27. Fredrickson MJ, Danesh-Clough AK, White R. Adjuvant Dexamethasone for Bupivacaine Sciatic and Ankle Blocks: Results from Two Randomized Placebo Controlled Trials. Reg Anesth Pain Med 2013; Jul-Aug;38(4):300-7

26. Fredrickson MJ, Danesh-Clough AK. Ultrasound-guided femoral catheter placement: a randomised comparison of the in-plane and out-of-plane techniques. Anaesthesia. 2013; April; 68(4): 382-390


25. Fredrickson MJ, Wolstencroft P, Chinchanwala S, Boland MR. Does motor block related to long acting brachial plexus block cause patient dissatisfaction after minor wrist and hand surgery: a prospective randomized trial. Br J Anaesth. 2012; Nov;109(5):809-15

24. Fredrickson MJ, Abeysekera A, White R. Randomized study of the effect of local anesthetic volume and concentration on the duration of peripheral nerve blockade. Reg Anesth Pain Med. 2012;Sept 37(5):496-501

23. Fredrickson MJ, Ilfeld BM. Prospective trial registration for clinical research: What is it, What is it good for, and Why do I care. Reg Anesth Pain Med. 2011; Nov-Dec;36(6):619-24. 

22. Fredrickson MJ, Ball C, Dalgleish A. Catheter orifice configuration influences the effectiveness of continuous peripheral nerve blockade. Reg Anesth Pain Med 2011; Sep-Oct;36(5):470-5. 

21. Fredrickson MJ, White R, Danesh-Clough AK. Low volume ultrasound-guided nerve block provides inferior postoperative analgesia compared to a higher volume landmark technique. Reg Anesth Pain Med 2011; Jul-Aug;36(4):393-8. 

20. Fredrickson MJ, Ting FSH, Chincahanwala S, Boland MR. Concomitant infraclavicular plus distal median, radial and ulnar nerve blockade accelerates upper extremity anaesthesia and improves block consistency compared with infraclavicular block alone. Br J Anaesth. Aug;107(2):236-42. Epub 2011 May 15.

19. Fredrickson MJ, Ball CM, Dalgleish AJ. Posterior versus Anterolateral Approach Interscalene Catheter Placement: A Prospective Randomized Trial. Reg Anesth Pain Med. 2011 Mar-Apr;36(2):125-33.

18. Fredrickson MJ, Abeysekera A, Price DJ, Wong AC. Patient initiated mandatory boluses for ambulatory continuous interscalene analgesia: an effective strategy for optimising analgesia and minimising side effects. Br J Anaesth. 2011 Feb;106(2):239-45. Epub 2010 Nov 25

17. Fredrickson MJ, Paine C, Hamill J. Improved early analgesia with the ilioinguinal block compared to the transversus abdominus plane block after pediatric inguinal surgery: a prospective randomized trial. Pediatric Anesthesia 2010; Nov 20 (11):1022-7

16. Fredrickson MJ, Wolstencroft P, Keiriwal R, Yoon A, Boland MR, Chinchanwala S. Single versus triple injection ultrasound guided infraclavicular block: confirmation of the effectiveness of the single injection technique. Anesthesia and Analgesia 2010; 111(5): 1325-7

15. Fredrickson MJ, Smith KR, Wong AC. Importance of volume and concentration for ropivacaine interscalene block in preventing recovery room pain and minimizing motor block after shoulder surgery. Anesthesiology 2010; 112:1374-81

14. Fredrickson MJ, Krisnan S, Chen CY. Postoperative analgesia for shoulder surgery: a critical appraisal of current techniques. Anesthesia 2010;65:608-624

13. Fredrickson MJ, Ball C, Dalgleish A. Analgesic Effectiveness of a Continuous vs. Single Injection Interscalene Block for Minor Arthroscopic Shoulder Surgery.  Reg Anesth Pain Med 2010;35:123-6

12. Fredrickson MJ, Ball C, Dalgleish A. A prospective randomized comparison of ultrasound guidance versus neurostimulation for interscalene catheter placement. Reg Anesth Pain Med; 2009; 590-4

11. Fredrickson MJ. Case report: Neurological deficit associated with intraneural needle placement without injection. Can J Anaesth 2009; 56:935-8

10. Fredrickson MJ, Danesh-Clough, T. Ambulatory Continuous Femoral Analgesia for Major Knee Surgery: A Randomised Study of Ultrasound Guided Femoral Catheter Placement. Anaesth Intensive Care 2009; 37:758-66

9. Fredrickson MJ, Price DJ. Analgesic Effectiveness of 0.2 vs. 0.4% ropivacaine via an ultrasound guided C5-6 root/superior trunk perineural ambulatory catheter. Br J Anaesth 2009; 103: 434-9

8. Fredrickson MJ, Patel A, Young S, Chinchanwallah S. ‘Corner pocket supraclavicular’ and infraclavicular ultrasound guided brachial plexus block: A randomized observer blinded comparison. Anaesthesia 2009; 64: 738-744

7. Grant CRK and Fredrickson MJ. Regional anaesthesia elastomeric pump performance after a single use and subsequent refill: A laboratory study. Anaesthesia 2009; 64: 770-775

6. Fredrickson MJ, Seal P. Ultrasound guided transversus abdominis plane block for neonatal abdominal surgery.  Anaesth Intensive Care 2009; 37: 469-72

5. Fredrickson MJ, Kilfoyle D. Neurological complication analysis of 1000 ultrasound guided peripheral nerve blocks for elective orthopedic surgery: A prospective study.  Anaesthesia 2009; 64: 836-44

4. Fredrickson MJ, Ball C, Dalgleish A, Stewart A, Short T. A prospective randomized comparison of ultrasound and neurostimulation as needle endpoints for interscalene catheter placement. Anesthesia and Analgesia 2009; 108 (5): 1695-700

3. Fredrickson MJ, Stewart AW. Continuous interscalene analgesia for rotator cuff repair: A retrospective comparison of effectiveness and cost in 205 patients from a multi-provider private practice setting. Anaesth Intensive Care 2008; 36: 786-91

2. Fredrickson MJ. The sensitivity of motor response to needle nerve stimulation during ultrasound guided interscalene catheter placement. Reg Anesth Pain Med 2008; 33: 291-6

1. Fredrickson MJ, Ball CM, Dalgleish AJ. Successful continuous interscalene analgesia for ambulatory shoulder surgery in a private practice setting. Reg Anesth Pain Med 2008; 33: 122-8

Invited Book Reviews

1. Fredrickson MJ. Ultrasound-Guided Regional Anesthesia and Pain Medicine. Bigeliesen P, ed. Anesthesia & Analgesia 2010

Book Chapters

1. Fredrickson MJ. Peripheral Nerve Blocks of the Thorax and Abdomen: in “Pediatric Anesthesia : Basic Principles, State-of-the-Art, Future” ed by Bruno Bissonnette.

2. Suresh S, Fredrickson MJ. Peripheral nerve blocks for children. “NYSORA Textbook of Regional Anesthesia” by Admir Hadzic, McGraw-Hill 2007.

3. Tsui BC, Fredrickson MJ, Suresh S. Pediatric epidural and caudal analgesia and anesthesia. “NYSORA Textbook of Regional Anesthesia” by Admir Hadzic, McGraw-Hill 2007.

Letters to the Editor

13. Fredrickson MJ. Orthopedic anesthesia subspecialization: a way to increase utilization of perineural infusions?. Reg Anesth Pain Med. 20i2; May/June;37(3):359-60 

12. Fredrickson MJ. Evidence-based medicine supports ultrasound-guided infraclavicular block over the corner pocket supraclavicular technique. Reg Anesth Pain Med. 2011; Sep-Oct;36(5):525-6.

11. Fredrickson MJ. Superficial cervical plexus neuropathy with chronic pain after superficial cervical plexus block and interscalene catheter placement.
Reg Anesth Pain Med. 2011 Mar-Apr;36(2):206.

10. Fredrickson MJ. Peripheral nerve blockade may be safer in 2010 than 2000. Reg Anesth Pain Med. 2010 Sep-Oct;35(5):474-5.


9. Fredrickson MJ, Borgeat A, Aguirre J, Boezaart AP. Ultrasound-guided interscalene block should be compared with the accepted standard for the neurostimulation technique. Reg Anesth Pain Med 2009; 34: 180


8. Fredrickson MJ, Seal P, Houghton J. Early experience with the transversus abdominis plane block in children. Paediatr Anaesth 2008; 18: 891-2


7. Fredrickson MJ. Ultrasound-assisted interscalene catheter placement in a child. Anaesth Intensive Care 2007; 35: 807-8


6. Fredrickson MJ. Ultrasound assisted perineural catheter placement facilitated by a catheter introduction syringe. Reg Anesth Pain Med 2007; 32: 370-1

5. Fredrickson MJ. Ultrasound-guided ankle block. Anaesth Intensive Care 2009; 37: 143-4


4. Fredrickson MJ, Borgeat A. Continuous interscalene block is preferable to the 'shoulder block' for postoperative analgesia following shoulder surgery. Anaesth Intensive Care 2008; 36: 119-20; author reply 20-1


3. Fredrickson MJ, Mantell NM. A 'reluctance to dispense with the anaesthetist': For valid reasons. Clin Experiment Ophthalmol 2008; 36: 98-9; author reply 9-100


2. Fredrickson MJ, Mantell NM, Watson AS, Vincent AL. A simple technique to minimize conjunctival haemorrhage following sub-tenon's block. Clin Experiment Ophthalmol 2007; 35: 685


1. Fredrickson MJ. "Oblique" Needle-probe alignment to facilitate ultrasound-guided femoral catheter placement. Reg Anesth Pain Med 2008; 33: 383-4