The left middle finger pressed firmly on the aforementioned spot, while the right hand held the needle, remembering that the needle should enter at an angle of 15 to 30 degrees following the direction of the blood vessel. It was best to choose the insertion point one third along the line connecting the patient's mandible and the upper edge of the clavicle.
Though this was what the textbooks said, it greatly tested the injectors' visual judgment. Those with less visual acuity could rely on experience. For Xie Wanying, this jugular vein puncture was a first-time experience, so she could only think that it should be easier than a subclavian vein puncture, at least it was a vein that could be seen and felt. This gave her full courage to attempt it, especially with two veteran nurses and Teacher Ren beside her.
