We hope that you enjoyed your tour of the clinical humid, and learning about the terms and abbreviations used to identify the environment supplies equipment, methods of recording, and the people you usually find there. You are now ready to learn about abbreviations and terms used in emergency situations. And those commonly used when administering medications or intravenous solutions. Before we begin Module three, we will work on refining your puzzle solving skills for discovering the meaning of medical words commonly used on the U.S. clinical unit. Let's examine two important terms that you saw in Module one. Dyspnea, defined as difficult breathing, and apnea, the absence of breathing. By examining these words, dyspnea, and apnea, we see that P N E A, or -pnea, is used in both words. Pnea forms the central aspect, or the root, of the word. Using the prs list, we find that pnea means breath or breathing. Then we use the prs list again, and see the dys refers to difficult Putting together the puzzle we attach the dys to the pnea, and we have the word dyspnea meaning difficultly breathing. Using the PRS list again we find that A. Often means without. And combined with pnea, it becomes without breathing, or apnea. Notice the dys is used as a prefix in many common English words. For example, the word dysfunction, means difficult or impaired function. Recognizing the meaning of spoken and written medical terms becomes quicker and easier, as you use the PRS list. Memorize the prefixes, roots and suffixes and then use them to discover the meaning of a medical word. When you can, try to accompany this, with a visual representation. Picture a person having a difficulty breathing. Or a sleeping person having long pauses in breathing. Take special note of roots. Be clear that the term tension was the root of hypertension. And that the pnea was the root for dyspnea. Roots are central in the word, and central to its meaning. The prefixes and suffixes then describe the root. Okay, let's go on. Module three is full of excitement. I would like to ask you to mentally place yourself on a U.S. clinical unit. It's three o'clock in the afternoon, and you've learned a lot as you've cared for a surgical patient on unit 4C. As you leave your patient's room, you hear an announcement on the public address system. Code blue, unit four 4C. All designated personnel report to 4C. A nurse in the hallway appears intent just walking right past you toward the nursing station. You're really not sure what's happening. You ask yourself, what's going on here? What should I do?