OK....Before training u in actual medical ninjutsu, you first have to know the medical methods which are used in the course of everyday medical practices. These are generally not used in combat, although if you are creative you can sometimes make use of them in battle, for example using Gantai No Jutsu (Bandage Skill) to tie bind your enemy up.
Shindan (Diagnosis) Description: The first step in treatment is understanding the problem. With this skill a shinobi uses their hands to carefully probe a patient for problems. This technique is preformed by kneeling over a patient and slowly running both hands over their body, looking for signs of injury that may not be visible to the naked eye. It can detect things such as internal injury, improper heart rate, non-apparent bone fractures, poisoning, and disease. A ninja of higher rank has learned to use this technique to perform a rudimentary examination of a body to determine cause and time of death. A Genin using this skill takes several minutes of work to determine the nature of a problem, a Chuunin takes less than a minute and a Jounin requires only a few seconds.
*Takes you to the Konoha Hospital and go in a room. Someone uncounscious is lyed on a bed*
Concentrate your chakra in your hands and scan the person's body. Because it's the first time, it won't take a few seconds.
Try it.