# Regional Anesthesia Reference

> Ultrasound-guided regional anesthesia reference with drug dosage calculator. (iPhone/iPad app by University Of Washington.)

- Source: https://appshunter.io/ios/app/regional-anesthesia-reference/id1445967461 (this page in markdown: same URL + `.md`)
- Developer: [University Of Washington](https://appshunter.io/developer/328228464)
- Category: Medical, Education
- Price: Free
- Rating: 5.00/5 from 32 App Store ratings · 9 written reviews indexed
- Age rating: 17+
- Requires: iOS 8.0 · 89 MB
- Languages: American English
- Released: 2019-04-07
- Data updated: 2026-06-11
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/regional-anesthesia-reference/id1445967461/reviews.md

## What is Regional Anesthesia Reference?

Regional Anesthesia Reference provides a quick look at the anatomy, positioning, and techniques for placing regional nerve blocks under ultrasound guidance.  This includes ultrasound images and anatomic descriptions, images of patient positioning, and videos of block placement.

Current blocks include:

Interscalene
Supraclavicular
Infraclavicular
Axillary
Femoral
Adductor Canal
Suprainguinal Fascia Iliaca
TAP
Rectus Sheath
Sciatic (Popliteal)

A local anesthetic drug calculator is also included for assistance with calculating maximum dosages and percent of max dose delivered for a given patient. This is a weight based calculator using dosages from Miller's Anesthesia or Morgan and Mikhail.

## Key features

- Ultrasound guidance for nerve blocks
- Anatomy and positioning guides
- Block placement technique videos
- Local anesthetic drug calculator
- List of current blocks

## Recent user reviews (9 of 9)

All indexed reviews: https://appshunter.io/ios/app/regional-anesthesia-reference/id1445967461/reviews.md

### 3/5 — Almost perfect

*2026-02-10*

This app would be amazing for quickly calculating the amount of local a surgeon can give after a peripheral block….. but… it only calculates based off of patients weight and doesn’t take into account the max dose of local anesthetics. For example, I put a 68kg pt into the calculator and it told me I could give 68ml of 1% lidocaine with Epinephrine. This is 680mg of lidocaine. The max allowable dose of lidocaine with epinephrine for any patient should be 500mg.

This is a potentially dangerous oversight but the app would be absolutely perfect if this is factored for.

### 4/5 — Max dose not correct

*2025-01-17*

I love this app, but it doesn’t take into account the standard max dose of any of the local anesthetics. For instance, for a 200kg pt, the calculator states the max dose of Bupivicaine is 400mg.

### 5/5 — Great App for Regional!!

*2021-04-26*

I absolutely love this app. It’s a great resource to access just prior to performing a block. The information is succinct and easy to navigate. My only complaint is newer blocks such as ESPB or PENG are not featured on the app.

### 5/5 — Awesome

*2020-10-27*

An absolutely awesome reference for clinical application. This gives u everything u need to safely double check u are about to do the block right

### 5/5 — Awesome app!!

*2020-09-28*

This an amazing resource for blocks! I especially found the dose calculator supremely useful! And it’s free! Thanks!!! 🤓👍🏽👍🏽

### 5/5 — Excellent

*2020-07-18*

Great application!! I’m a PGY4 and on a regional rotation. It’s a great quick refresher before going to do a block.

### 5/5 — Really nice app!

*2020-06-23*

I really like this app!  Really awesome reference.

Please consider adding the following blocks and also maybe a quick LAST and anticoagulant reference within:

Superficial cervical plexus
PECS 1/2
Serratus
Erector Spinae
QL
Ilioinguinal-Iliohypogastric
iPACK
Transgluteal and Subgluteal Sciatic 
Ankle

### 5/5 — Fantastic app!!

*2020-04-06*

Excellent reference for any new or advanced practitioner. Easily the best app of its kind. Thank you Dr. Walters for putting this together for the community.

### 5/5 — Excellent regional reference

*2020-01-24*

The app is a perfect phone reference for upper and lower extremity blocks. Clear diagrams and videos. The local anesthetic calculator is really nicely done

## Frequently asked questions about Regional Anesthesia Reference

### What is Regional Anesthesia Reference?

Regional Anesthesia Reference is a free medical app that provides quick access to information on performing regional nerve blocks using ultrasound guidance. It includes anatomical descriptions, patient positioning images, and technique videos.

### What blocks are covered by Regional Anesthesia Reference?

The app covers a comprehensive list of blocks including Interscalene, Supraclavicular, Infraclavicular, Axillary, Femoral, Adductor Canal, Suprainguinal Fascia Iliaca, TAP, Rectus Sheath, and Sciatic (Popliteal) blocks.

### Does Regional Anesthesia Reference have a drug calculator?

Yes, it includes a local anesthetic drug calculator. This tool assists with calculating maximum dosages and the percentage of maximum dose delivered based on patient weight, referencing Miller's Anesthesia and Morgan and Mikhail.

### Is Regional Anesthesia Reference free to use?

Yes, Regional Anesthesia Reference is completely free to download and use. It does not have any in-app purchases or advertisements.

### What devices support Regional Anesthesia Reference?

Regional Anesthesia Reference is available for iPhone, iPad, and iPod. It is designed for Apple mobile devices.

### How often is Regional Anesthesia Reference updated?

The app was last updated on January 23, 2020, to version 2.1.1. While updates may not be frequent, the content provided is a stable reference.

### What is the age rating for Regional Anesthesia Reference?

Regional Anesthesia Reference has an age rating of 17+. This is typical for medical reference applications that contain detailed anatomical and procedural information.

### Who developed Regional Anesthesia Reference?

Regional Anesthesia Reference was developed by the University of Washington. This indicates a connection to a reputable academic medical institution.

## Version history (last 3 releases)

### 2.1.1 — 2020-01-23

Complete rewrite with new design by the University of Washingtons HCDE.

### 1.0.1 — 2019-04-08

Updated to support iPads

### 1.0 — 2019-04-06

No release notes.

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-11.*