These chaptet talk about anatomy of upprt limb consist bones and muscles and joints and nerves and vascular system.
Neurovascular system is important.
Radial nerve cross the arm from medial to lateral.
And injured by truma.
If radial nerve injue is managed by operation and phyiotherapy.
Ulnar nerve injury is commmon and injured .
These chaptet talk about anatomy of upprt limb consist bones and muscles and joints and nerves and vascular system.
Neurovascular system is important.
Radial nerve cross the arm from medial to lateral.
And injured by truma.
If radial nerve injue is managed by operation and phyiotherapy.
Ulnar nerve injury is commmon and injured .
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The US House of Representatives is deeply concerned by ongoing and pervasive acts of antisemitic
harassment and intimidation at the Massachusetts Institute of Technology (MIT). Failing to act decisively to ensure a safe learning environment for all students would be a grave dereliction of your responsibilities as President of MIT and Chair of the MIT Corporation.
This Congress will not stand idly by and allow an environment hostile to Jewish students to persist. The House believes that your institution is in violation of Title VI of the Civil Rights Act, and the inability or
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Postsecondary education is a unique opportunity for students to learn and have their ideas and beliefs challenged. However, universities receiving hundreds of millions of federal funds annually have denied
students that opportunity and have been hijacked to become venues for the promotion of terrorism, antisemitic harassment and intimidation, unlawful encampments, and in some cases, assaults and riots.
The House of Representatives will not countenance the use of federal funds to indoctrinate students into hateful, antisemitic, anti-American supporters of terrorism. Investigations into campus antisemitism by the Committee on Education and the Workforce and the Committee on Ways and Means have been expanded into a Congress-wide probe across all relevant jurisdictions to address this national crisis. The undersigned Committees will conduct oversight into the use of federal funds at MIT and its learning environment under authorities granted to each Committee.
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3. Introduction (1 of 3)
• Soft-tissue injuries are common.
– Simple as a cut or scrape
– Serious as a life-threatening internal injury
• Do not be distracted by dramatic open
wounds.
– Do not forget airway obstructions.
4. Introduction (2 of 3)
• Soft tissues of the body can be injured
through a variety of mechanisms:
– Blunt injury
– Penetrating injury
– Barotrauma
– Burns
5. Introduction (3 of 3)
• Soft-tissue trauma is the leading form of
injury.
• Death is often related to hemorrhage or
infection.
• EMTs can teach children and others
preventive actions.
6. The Anatomy and Physiology of the
Skin (1 of 8)
• Skin is first line of defense against:
– External forces
– Infections
• Skin is relatively tough, but still susceptible to
injury.
– Simple bruises and abrasions to serious
lacerations and amputations
7. The Anatomy and Physiology of the
Skin (2 of 8)
• In all instances you must:
– Control bleeding.
– Prevent further contamination to decrease the
risk of infection.
– Protect wounds from further damage.
– Apply dressings and bandages to various parts of
the body.
8. The Anatomy and Physiology of the
Skin (3 of 8)
• Skin varies in thickness.
– Thinner in the very young and very old
– Thinner on the eyelids, lips, and ears than on the
scalp, back, soles of feet
– Thin skin is more easily damaged than thick skin.
9. The Anatomy and Physiology of the
Skin (4 of 8)
• Skin has two principal layers: the epidermis
and the dermis.
– Epidermis is the tough, external layer.
– Dermis is the inner layer.
11. The Anatomy and Physiology of the
Skin (6 of 8)
• Skin covers all the external surfaces of the
body.
• Bodily openings are lined with mucous
membranes.
– Mucous membranes secrete a watery substance
that lubricates the openings.
– These are wet, whereas skin is dry.
12. The Anatomy and Physiology of the
Skin (7 of 8)
• Skin serves many
functions.
– Keeps pathogens out
– Keeps water in
– Assists in temperature
regulation
– Nerves in skin report to
brain on environment
and sensations.
13. The Anatomy and Physiology of the
Skin (8 of 8)
• Any break in the skin allows bacteria to enter
and raises the possibilities of:
– Infection
– Fluid loss
– Loss of temperature control
14. Pathophysiology (1 of 6)
• Three types of soft-tissue injuries:
– Closed injuries
• Damage is beneath skin or mucous membrane.
• Surface is intact.
– Open injuries
• Break in surface of skin or mucous membrane
• Exposes deeper tissues to contamination
15. Pathophysiology (2 of 6)
• Three types of soft-tissue injuries (cont’d):
– Burns
• Damage results from thermal heat, frictional heat,
toxic chemicals, electricity, nuclear radiation
16. Pathophysiology (3 of 6)
• Pathophysiology of closed and open injuries
– Cessation of bleeding is the primary concern.
– The next wound healing stage is inflammation.
– A new layer of cells is then moved into the
damaged area.
17. Pathophysiology (4 of 6)
• Pathophysiology of closed and open injuries
(cont’d)
– New blood vessels form.
– Collagen provides stability to the damaged tissue
and joins wound borders.
18. Pathophysiology (5 of 6)
• Pathophysiology of burns
– Severity of a thermal wound correlates directly
with:
• Temperature
• Concentration
• Amount of heat energy possessed by the object or
substance
• Duration of exposure
19. Pathophysiology (6 of 6)
• Pathophysiology of burns (cont’d)
– The greater the heat energy, the deeper the
wound.
– Exposure time is an important factor.
– People reflexively limit heat energy and exposure
time.
• But cannot if unconscious or trapped
20. Closed Injuries (1 of 4)
• Characteristics of closed injuries
– History of blunt trauma
– Pain at the site of injury
– Swelling beneath the skin
– Discoloration
21. Closed Injuries (2 of 4)
• A contusion (bruise) causes bleeding beneath
the skin but does not break the skin.
– Caused by blunt forces
– Buildup of blood produces blue or black
ecchymosis.
• A hematoma is blood collected within
damaged tissue or in a body cavity.
22. Closed Injuries (3 of 4)
• A crushing injury occurs when a great amount
of force is applied to the body.
• Extent of damage depends on:
– Amount of force
– Length of time force is applied
• When an area of the body is trapped for
longer than 4 hours, crush syndrome can
develop.
23. Closed Injuries (4 of 4)
• Compartment syndrome results from the
swelling that occurs whenever tissues are
injured.
• Severe closed injuries can also damage
internal organs.
– Assess all patients with closed injuries for more
serious hidden injuries.
24. Open Injuries (1 of 7)
• Protective layer of the skin is damaged.
• Wound is contaminated and may become
infected.
• Four types:
– Abrasions
– Lacerations
– Avulsions
– Penetrating wounds
25. Open Injuries (2 of 7)
• An abrasion is a wound of the superficial
layer of the skin.
– Caused by friction when a body part rubs or
scrapes across a rough or hard surface
27. Open Injuries (4 of 7)
• An avulsion separates various layers of soft
tissue so that they become either completely
detached or hang as a flap.
– Often there is significant bleeding.
– Never remove an avulsion skin flap.
• An amputation is an injury in which part of
the body is completely severed.
28. Open Injuries (5 of 7)
• A penetrating wound is an injury resulting
from a sharp, pointed object.
– Can damage structures deep within the body
29. Open Injuries (6 of 7)
• Stabbings and shootings often result in
multiple penetrating injuries.
– Assess the patient carefully to identify all
wounds.
– Count the number of penetrating injuries.
– Determine the type of gun and rounds fired, and
document your care.
– You may have to testify in court.
30. Open Injuries (7 of 7)
• Blast injuries
– Primary blast injury
• Damage caused by pressure of explosion
– Secondary blast injury
• Damage results from flying debris
– Tertiary blast injury
• Victim is thrown by explosion, perhaps into an object
31. Patient Assessment of Closed and
Open Injuries (1 of 2)
• More difficult to assess a closed injury
– You can see an open injury.
• Consider the possibility of a closed injury
when you observe:
– Bruising
– Swelling
– Deformity
– The patient reporting pain
32. Patient Assessment of Closed and
Open Injuries (2 of 2)
• Patient assessment steps
– Scene size-up
– Primary assessment
– History taking
– Secondary assessment
– Reassessment
33. Scene Size-up (1 of 2)
• Scene safety
– Observe the scene for hazards to yourself, your
crew, and the patient.
– Assess for the potential for violence.
– Assess for environmental hazards.
– Take standard precautions.
– Determine the number of patients.
– Consider if you need additional resources.
34. Scene Size-up (2 of 2)
• Mechanism of injury/nature of illness
– Look for indicators of the MOI as you assess the
scene.
– The MOI may provide indicators of safety threats.
– If the scene is unsafe, request additional help
early.
35. Primary Assessment (1 of 4)
• Form a general impression.
– Look for indicators to alert you to the seriousness
of the patient’s condition.
– Do not be distracted from looking for more
serious hidden injuries.
– Check for responsiveness using the AVPU scale.
36. Primary Assessment (2 of 4)
• Airway and breathing
– Ensure that the patient has a clear and patent
airway.
– Protect the patient from further spinal injury.
– Assess the patient for adequate breathing.
– Inspect and palpate the chest for DCAP-BTLS.
37. Primary Assessment (3 of 4)
• Circulation
– Assess the patient’s pulse rate and quality.
– Determine the skin condition, color, and
temperature.
– Check the capillary refill time.
– You may need to treat for shock.
– If visible significant bleeding is seen, you must
begin the steps to control it.
38. Primary Assessment (4 of 4)
• Transport decision
– Immediately transport in these cases:
• Poor initial general impression
• Altered level of consciousness
• Dyspnea
• Abnormal vital signs
• Shock
• Severe pain
39. History Taking (1 of 2)
• Investigate the chief complaint.
– Obtain a medical history.
– Obtain a SAMPLE history.
• Using OPQRST may provide some background on
isolated extremity injuries.
– If the patient is unresponsive, attempt to obtain
the history from other sources.
40. History Taking (2 of 2)
• Typical signs of an open injury include:
– Bleeding
– Break(s) in the skin
– Shock
– Hemorrhage
– Disfigurement or loss of a body part
41. Secondary Assessment (1 of 4)
• Physical examinations
– Is the patient in a tripod position?
– What is the skin’s color and condition?
– Are there any signs of increased respiratory
efforts?
• Retractions
• Nasal flaring
• Pursed lip breathing
• Use of accessory muscles
42. Secondary Assessment (2 of 4)
• Physical examinations (cont’d)
– Listen for air movement and breath sounds.
– Assess pulse rate and quality.
– Determine the skin condition, color, and
temperature.
– Check the capillary refill time.
43. Secondary Assessment (3 of 4)
• Physical examinations (cont’d)
– Assess the neurologic system.
– Assess the musculoskeletal system with a full-
body scan.
– Assess all anatomic regions.
44. Secondary Assessment (4 of 4)
• Vital signs
– You must reassess the vital signs to identify how
quickly the patient’s condition is changing.
– Use appropriate monitoring devices to quantify:
• Oxygenation
• Circulatory status
• Blood pressure
45. Reassessment (1 of 3)
• Repeat the primary assessment.
• Reassess vital signs and the chief complaint.
• Assess all bandaging frequently.
• Identify and treat changes in the patient’s
condition.
46. Reassessment (2 of 3)
• Interventions
– Assess and manage all threats to the patient’s
airway, breathing, and circulation.
– Expose all wounds, cleanse the wound surface,
control bleeding, and be prepared to treat for
shock.
– Extremities that are painful, swollen, or
deformed should be splinted.
47. Reassessment (3 of 3)
• Communication and documentation
– Description of the MOI
– Position in which you found the patient
– Amount of blood loss
– Location and description of any soft-tissue
injuries or other wounds
– Size and depth of the injury
– How you treated the injuries
48. Emergency Medical Care for Closed
Injuries (1 of 3)
• No special emergency care for small
contusions
• Soft-tissue injuries may look rather dramatic.
– Still focus on airway and breathing first
– You may have to assist ventilations with a bag-
mask device.
49. Emergency Medical Care for Closed
Injuries (2 of 3)
• Treat closed soft-tissue injury using the RICES
mnemonic:
– Rest
– Ice
– Compression
– Elevation
– Splinting
50. Emergency Medical Care for Closed
Injuries (3 of 3)
• Signs of developing shock:
– Anxiety or agitation
– Changes in mental status
– Increased heart rate
– Increased respiratory rate
– Diaphoresis
– Cool or clammy skin
– Decreased blood pressure
51. Emergency Medical Care for Open
Injuries (1 of 12)
• Before caring for the patient, follow standard
precautions.
• Wear gloves and eye protection.
– Wear a gown and a mask if necessary.
• Make sure the airway is open and administer
high-flow oxygen.
52. Emergency Medical Care for Open
Injuries (2 of 12)
• Control life-threatening bleeding using:
– Direct, even pressure and elevation
– Pressure dressings and/or splints
– Tourniquets
• Follow the steps in Skill Drill 24-1 to control
bleeding from an extremity.
53. Emergency Medical Care for Open
Injuries (4 of 12)
• All open wounds are assumed to be
contaminated and present a risk of infection.
• Often, you can better control bleeding from
an open soft-tissue wound by splinting the
extremity, even if there is no fracture.
54. Emergency Medical Care for Open
Injuries (5 of 12)
• Abdominal wounds
– An open wound in the abdominal cavity may
expose internal organs.
– The organs may even protrude through the
wound, an injury called evisceration.
55. Emergency Medical Care for Open
Injuries (6 of 12)
• Abdominal wounds (cont’d)
– Cover the wound with sterile gauze.
– Secure with an occlusive dressing.
– Keep the organs moist and warm.
56. Emergency Medical Care for Open
Injuries (7 of 12)
• Impaled objects
– To treat an impaled object, follow the steps in
Skill Drill 24-2.
– Only remove an impaled object when:
• The object is in the cheek and obstructs breathing.
• The object is in the chest and interferes with CPR.
57. Emergency Medical Care for Open
Injuries (8 of 12)
• Neck injuries
– Open neck injuries can be life threatening.
– Open veins may suck in air and cause cardiac
arrest.
– Cover the wound with an occlusive dressing.
– Apply pressure but do not compress both carotid
arteries at the same time.
58. Emergency Medical Care for Open
Injuries (9 of 12)
• Small-animal bites
– A small animal’s mouth is heavily contaminated
with virulent bacteria.
– Wounds may require:
• Antibiotics
• Tetanus prophylaxis
• Suturing
– Bites should be evaluated by a physician.
59. Emergency Medical Care for Open
Injuries (10 of 12)
• A major concern is the spread of rabies.
– Acute, potentially fatal viral infection of the
central nervous system
– Can affect all warm-blooded animals
– Transmitted through biting or licking an open
wound
– Prevented by a series of special vaccine injections
60. Emergency Medical Care for Open
Injuries (11 of 12)
• Human bites
– The human mouth contains an exceptionally
wide range of virulent bacteria and viruses.
– Regard any human bite that has penetrated the
skin as a very serious injury.
– Can result in a serious, spreading infection
61. Emergency Medical Care for Open
Injuries (12 of 12)
• Emergency
treatment:
– Apply a dry, sterile
dressing.
– Promptly
immobilize the
area with a splint
or bandage.
– Provide transport
to the ED.
62. Burns (1 of 2)
• Account for over 10,000 deaths a year
• Among the most serious and painful of all
injuries
• A burn occurs when the body receives more
radiant energy than it can absorb.
– Sources of this energy include heat, toxic
chemicals, and electricity.
63. Burns (2 of 2)
• Always perform a complete assessment to
determine whether there are other serious
injuries.
64. Complications of Burns (1 of 2)
• When a person is burned, the skin that acts
as a barrier is destroyed.
• The victim is now at high risk for:
– Infection
– Hypothermia
– Hypovolemia
– Shock
65. Complications of Burns (2 of 2)
• Burns to the airway are of significant
importance.
• Circumferential burns of the chest can
compromise breathing.
• Circumferential burns of the extremity can
lead to neurovascular compromise and
irreversible damage.
66. Burn Severity (1 of 5)
• Burn severity depends on:
– Depth of burn
– Extent of burn
– Critical areas involved
• Face, upper airway, hands, feet, genitalia
– Preexisting medical conditions
– Patient younger than 5 or older than 55
67. Burn Severity (2 of 5)
• Depth
– Superficial (first-degree) burns
• Only the top layer of skin
– Partial-thickness (second-degree) burns
• Epidermis and some portion of the dermis
• Blisters are present.
– Full-thickness (third-degree) burns
• Extend through all skin layers.
69. Burn Severity (4 of 5)
• Extent
– Can be estimated using the rule of nines
– Divides the body into sections, each representing
approximately 9% of the total body surface area
– Proportions differ for infants, children, and adults