Technicians Handbook - Historic Naval Ships Association

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Shock• Be sure you draw the tourniquet tight enough to stop the bleeding, but do not make it any tighterthan necessary.• Do not loosen a tourniquet after it has been applied except in extreme emergency.• Do not cover a tourniquet with a dressing. If you must cover the injured person in some way,make sure that all other people concerned with the case know about the tourniquet. Usingcrayon, magic marker, or blood, mark a large T on the victim's forehead or on a medical tagattached to the wrist.If you've ever hit your finger with a hammer and felt — in addition to the pain — weak, dizzy, andnauseous, then you have experienced a mild form of shock. In such an instance, the symptoms appearimmediately after the injury; but they may not show up for several hours.Shock is a condition in which blood circulation is seriously disturbed. Crushed or fractured bones,burns, prolonged bleeding, and asphyxia all cause shock. It may be slight or it may be severe enough tocause death. Because all injuries will result in some form of shock, you must learn its symptoms andknow how to treat the victim.HOW TO RECOGNIZE SHOCK.—A person who is going into shock may show quite a few signsor symptoms, some of which are indicated in figure 1-9 and are discussed below. Remember, however,that signs of shock do not always appear at the time of the injury; indeed, in many serious cases they maynot appear until hours later.Figure 1-9.—Symptoms of shock.1-14
The symptoms of a person suffering from shock are caused, directly or indirectly, by the disturbanceof the circulation of the blood. The pulse is weak and rapid. Breathing is likely to be shallow, rapid, andirregular, because the poor circulation of the blood affects the breathing center in the brain. Thetemperature near the surface of the body is lowered because of the poor blood flow; so the face, arms, andlegs feel cold to the touch. Sweating is likely to be very noticeable. A person in shock is usually verypale, but in some cases the skin may have a bluish or reddish color. As mentioned previously when wewere discussing electric shock, in the care of victims with dark skin, it may be necessary to rely primarilyon the color of the mucous membranes on the inside of the mouth or under the eyelid or under the nailbed. A person in or going into shock has a bluish color to these membranes instead of a healthy pink. Thepupils of the eyes are usually dilated (enlarged).A conscious person in shock may complain of thirst and have a feeling of weakness, faintness, ordizziness. The victim may feel nauseous, restless, frightened, and/or anxious. As shock deepens, thesesigns gradually disappear and the victim becomes less and less responsive to what is going on. Even painmay not arouse the shock victim. Finally, the victim may become unconscious.You will not likely see all these symptoms of shock in any one case. Some of them appear only inlate stages of shock when the disturbance of the blood flow has become so great that the person's life is inserious danger. Sometimes the signs of shock may be disguised by other signs of injury. You must knowwhat symptoms indicate the presence of shock, but do not ever wait for symptoms to develop beforebeginning the treatment for shock. Remember, EVERY SERIOUSLY INJURED PERSON ISLIKELY TO DEVELOP SERIOUS SHOCK.PREVENTION AND TREATMENT OF SHOCK.—You should begin treatment for shock assoon as possible. Prompt treatment may prevent the occurrence of shock or, if it has already developed,prevent its reaching a critical point. Keep the victim lying down and warm. If conscious, the victimshould be encouraged and assured that expert medical help will arrive soon.KEEP AN INJURED PERSON WARM ENOUGH FOR COMFORT, BUT DO NOT LET THEVICTIM BECOME OVERHEATED.The best position to use for the prevention or the treatment of shock is one which encourages theflow of blood to the brain. If the injured person can be placed on his/her back on a bed, a cot, or astretcher, you can raise the lower end of the support about 12 inches so that the feet will be higher thanthe head. The circumstances of the accident may prevent the use of a bed, a cot, or a stretcher. In suchcases, you might still be able to raise the feet and legs enough to help the blood flow to the brain.Sometimes you can take advantage of a natural slope of ground and place the casualty so that the head islower than the feet.In every case, of course, you will have to consider what type of injury is present before you candecide on the best position. For example, a person with a chest wound may have so much troublebreathing that you will have to raise the head slightly. If the face is flushed rather than pale, or if you haveany reason to suspect a head injury, do not raise the feet; instead, you should keep the head level with orslightly higher than the feet. If the person has broken bones, you will have to judge what position wouldbe best both for the fractures and for shock. A fractured spine must be immobilized before the victim ismoved at all, if further injuries are to be avoided. If you have any doubts about the correct position to use,have the victim lie flat on his/her back. THE BASIC POSITION FOR TREATING SHOCK IS ONEIN WHICH THE HEAD IS LOWER THAN THE FEET. Do the best you can under the particularcircumstances to get the injured person into this position. In any case, never let a seriously injured personsit, stand, or walk around.1-15
Page 1 and 2: SPECIAL PUBLICATIONSeptember 1998Na
Page 3 and 4: PREFACESpecial Publications (SPs) a
Page 5 and 6: TABLE OF CONTENTSCHAPTERPAGE1. The
Page 7 and 8: Module 11, Microwave Principles, ex
Page 9: Student CommentsCourse Title:NEETS
Page 12 and 13: • Be cautious when working in voi
Page 14 and 15: Electric ShockElectric shock may ca
Page 16 and 17: In this situation, the immediate ad
Page 18 and 19: Lean or rock forward with elbows lo
Page 20 and 21: possible) over the wound and firmly
Page 22 and 23: (1) NEAREST THE WOUND and (2) BETWE
Page 26 and 27: Liquids should be administered spar
Page 28 and 29: drinks or stimulants. Get the victi
Page 30 and 31: Figure 1-11.—RC time constants.Fi
Page 32 and 33: Ac current formulas are:Ohm's law f
Page 34 and 35: Parallel inductors without coupling
Page 36 and 37: Another way to calculate reactive p
Page 38 and 39: ResistanceRESISTANCE is the opposit
Page 40 and 41: Since:Transformer power:1-30
Page 42 and 43: WARNINGRf voltages may be induced i
Page 44 and 45: Alpha is always less than 1 for a c
Page 46 and 47: WavelengthCAUTIONBecause vacuum tub
Page 48 and 49: Minimum radar range = (pulse width
Page 50 and 51: Log or dBGain or mw11 12.510 109 88
Page 52 and 53: Table 1-1.—CB Style Capacitor Par
Page 54 and 55: Table 1-3.—CYR10 Style Capacitor
Page 56 and 57: Figure 1-16.—Ceramic capacitor co
Page 58 and 59: Table 1-4.—Principal Applications
Page 60 and 61: Figure 1-18.—Resistor color code.
Page 62 and 63: MilitaryspecificationMIL-R-39005MIL
Page 64 and 65: Figure 1-19.—Color code for trans
Page 66 and 67: Figure 1-21.—Transistor lead iden
Page 68 and 69: numbers and part numbers can be fou
Page 70 and 71: SizeTable 1-10.—Current-Carrying
Page 72 and 73: Jan TypeOverallDiameter (ins)Table
Page 74 and 75:
Table 1-13.—MS Connector Identifi
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Figure 1-23.—Insert arrangements
Page 78 and 79:
Figure 1-25.—Typical BNC connecto
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Figure 1-28.—Attaching HN connect
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Table 1-16.—N Series Connectors w
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Insulation, Heat Shrinkable Sleevin
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Table 1-19.—Shrinkable Tubing Par
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Table 1-21.—New Style Military Fu
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Conversion and Equivalent TablesTab
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Table 1-24.—Conversion Chart—Co
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Table 1-24.—Conversion Chart—Co
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Figure 1-33.—Electrical symbols.
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Figure 1-34.—Electronic/logic sym
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Figure 1-35.—Fiber optic symbols.
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Table 1-26.—Frequency Spectrum Us
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Joint Electronic Type Designation S
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Table 1-29.—Microcircuit Part Num
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Table 1-29.—Microcircuit Part Num
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CIRCUIT53MC54MC55MC56MC57MC58MC59MC
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CIRCUITQAQDQXRARDRW4SNSPTD1TD2TD5TD
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CIRCUIT4JZ5JZ6JZ7JZ8JZ9JZ10JZ11JZTa
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CIRCUITX29JX34JX40JX41JX42JX43JX44J
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Table 1-34.—Common LogarithmsN 0
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Table 1-35.─Trigonometric Functio
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Table 1-36.—Julian Date CalendarD
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Table 1-38.—Effects of Heat and H
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Table 1-40.—Old and New Specifica
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Remember to use the proper safety p
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Figure 1-38.—Computation of phase
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Figure 1-40.—Lissajous patterns f
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Figure 1-42.—Octopus schematic di
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Figure 1-46.—Combination displays
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• A military alteration that chan
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numbers. They can be easily convert
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support equipment. All aircraft equ
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Publications and DocumentsVarious p
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REFERENCESAfloat Shopping Guide, NA
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NEETS, Module 9, Introduction to Wa
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Technicians Handbook - Historic Naval Ships Association

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