Yes, it is quite possible to gurgle with even just a small amount of water or secretions in the airway. Although salt water in the larynx CAN create laryngospasm (the situation where the vocal cords close and the person can't open them to breathe) it doesn't always happen at all. The type of sounds described by the author of the article definitely indicate fluid in the airway, but may not indicate at all how much. I've seen patients who SOUND terrible, but whose lungs are actually clear, because all the fluid is in the upper airway. But the fact that they intubated the patient indicates that she aspirated a LOT of water -- which is actually a rather rare occurrence in a conscious patient, because most people simply won't do it -- they stop inhaling when they feel the water in their trachea. (Thus the phenomenon of "dry drowning".)
awap, under normal diving conditions, I don't think anybody should argue with a thumb. But with instruction, sometimes the student is overreacting and just needs to be calmed down. I actually asked Peter about this last night, about how you tell when to agree with a request to surface, and when you try to encourage the student to stay down and work through the problem, and all he could say is that it's a judgment call. Clearly the instructor in this case made the wrong call, and I don't argue with that at all.
awap, under normal diving conditions, I don't think anybody should argue with a thumb. But with instruction, sometimes the student is overreacting and just needs to be calmed down. I actually asked Peter about this last night, about how you tell when to agree with a request to surface, and when you try to encourage the student to stay down and work through the problem, and all he could say is that it's a judgment call. Clearly the instructor in this case made the wrong call, and I don't argue with that at all.