While many medical articles conclude 'more research is needed...', or further study is required' here comes a straight forward article that gives you a simple, but very helpful tool for your daily work. In this month's Anaesthesia Williams and Walker present a normogram for calculation of the maximum safe volume (ml) of local anaesthetic to a clinical acceptable degree of accuracy. Indeed this normogram allows you to find out the various doses within a few seconds.
In their article they looked at 14 commonly used local anaesthetics and provide some further background information. The normogram only works with body weights up to 70kg, but they recommend to use the ideal body weight for obese patients. An article worth reading (open access!) and a normogram worth using!
Williams DJ et al. Anaesthesia. doi: 10.1111/anae.12679