Most of us will no doubt have a First Aid tome in our possession, especially if not living alone but probably so even if alone - for those occasions where help is not immediately available, where we might be in more remote locations, or simply to know what to do in most such emergencies. Apart from a general First Aid Manual, I used to have one aimed at Mountaineering but mostly I was never in such remote locations, apart from in winter where there might be few about in mountain areas. And this was long before mobile phones were available. Nowadays, it is probably in long distance yachting that some knowledge over and above the normal emergencies that occur would be seen as being useful and perhaps essential.
I buy lots of books from one supplier that discounts them often to less than half-price, and seeing one as to medical emergencies at sea, I bought it more out of curiosity. Given that I have no intention of ever sailing again, and haven't done so for many decades, although I did pursue the option of a round-the-world trip at one time. This book, first published in 2008, would no doubt have been useful - and even as to those not sailing:
Skipper's Medical Emergency Handbook (2018) by Dr S. Briggs and Dr C. Mackenzie.
So what books in the same line do you have and/or would recommend?