What is 4A

4A is short for 4Anesthesiology. 4A is a free email service that gives you a weekly overview of the last published abstracts of original articles, trials and reviews in four leading medical journals in the field of anesthesiology, Current Opinion in Anesthesiology, Anesthesiology, British Journal of Anaesthesia and Anesthesia & Analgesia. It's easy to do and knowledge is for everyone, so sign up now.

/Curr%20Opin%20Anaesthesio
Impact Factor 2.1 (2025)
A well-respected American monthly journal in Anesthesiology. Founded in 1994. Published by Lippincott Williams and Wilkins.
/Anesthesiology
Impact Factor 9.2 (2025)
A renowned American anesthesiology journal. Anesthesiology publishes via Open Access and an Active Press Release Program. Founded in 1940. Published by Lippincott Williams and Wilkins.
/Brit%20J%20Anaesth
Impact Factor 9.2 (2025)
A prestigious British journal. Founded in 1923. Published by Oxford University Press.
/Anesth%20Analg
Impact factor 4.0 (2025)
A leading American journal in anesthesiology. Founded in 1957. Published by Lippincott Williams and Wilkins.

Editorial Team 4A

/M.%20van%20Lemmen<sup>%20MD,%20PhD</sup>
M. van Lemmen MD, PhD
Maarten van Lemmen is Editor-in-Chief of 4A. Having obtained his PhD in Anesthesiology with a focus on respiratory depression and naloxone, he now works as a researcher alongside completing his clinical rotations.
/S.%20Riemens<sup>%20MD</sup>
S. Riemens MD
S. Riemens is editor of 4A. He works as a medical resident (not in training) for the Intensive Care department, Maasstad Ziekenhuis Rotterdam.
/H.M.R.					
										
						van%20Goor<sup>%20MSc,%20MD,%20PhD</sup>
H.M.R. van Goor MSc, MD, PhD
Harriƫt van Goor is editor of 4A! She works as a medical resident in training for the department of Anesthesiology, UMC Utrecht. She has obtained a PhD in continuous monitoring of vital signs.
/S.%20Jansen<sup>%20MD,%20PhD</sup>
S. Jansen MD, PhD
Simone Jansen is editor for 4A. She is currently an anesthesiology resident at Leiden University Medical Center (LUMC), having obtained her PhD with a focus on pain relief, respiratory depression, and pulse oximetry.
/T.%20Reiniers<sup>%20MD</sup>
T. Reiniers MD
Ted Reniers is editor of 4A! He works as a medical resident in the department of Anesthesiology and Intensive Care Medicine at St. Antonius Hospital Nieuwegein. He is a PhD candidate on postoperative systemic inflammatory dysregulation (PSID).
/L.%20Groenewegen<sup>%20MD</sup>
L. Groenewegen MD
Liselot Groenewegen is editor of 4A. She works as a PhD candidate at the department of Anesthesiology, st Antonius hospital Nieuwegein. Her PhD research focuses on risk stratification and the perioperative care of elderly patients undergoing major surgery.
/Looking%20for%20you!
Looking for you!
Although we have a large team, we can always use additional help! Interested? Send us a message using the form at the top of the site!
/Looking%20for%20you!
Looking for you!
Although we have a large team, we can always use additional help! Interested? Send us a message using the form at the top of the site!

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