Stab wound | |
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An 1833 depiction of Jereboam O. Beauchamp stabbing Solomon P. Sharp. | |
Specialty | Emergency medicine |
A stab wound is a specific form of penetrating trauma to the skin that results from a knife or a similar pointed object. [1] [2] [3] [4] While stab wounds are typically known to be caused by knives, they can also occur from a variety of implements, including broken bottles and ice picks. Most stabbings occur because of intentional violence or through self-infliction. [5] The treatment is dependent on many different variables such as the anatomical location and the severity of the injury. Even though stab wounds are inflicted at a much greater rate than gunshot wounds, they account for less than 10% of all penetrating trauma deaths.[ citation needed ]
Stab wounds can cause various internal and external injuries. They are generally caused by low-velocity weapons, meaning the injuries inflicted on a person are typically confined to the path it took internally, instead of causing damage to surrounding tissue, which is common of gunshot wounds. [6] The abdomen is the most commonly injured area from a stab wound. Interventions that may be needed depending on severity of the injury include airway, intravenous access, and control of hemorrhage. [5] [7] The length and size of the knife blade, as well as the trajectory it followed, may be important in planning management as it can be a predictor of what structures were damaged. [1] [3] There are also special considerations to take into effect as given the nature of injuries, there is a higher likelihood that persons with these injuries might be under the influence of drugs which can make it harder to obtain a complete medical history. [8] Special precautions should also be taken to prevent further injury from a perpetrator to the victim in a hospital setting. [9] Similarly to treating shock, it is important to keep the systolic pressure above 90mmHg, maintain the person's core body temperature, and for prompt transport to a trauma center in severe cases. [10] [11]
To determine if internal bleeding is present a focused assessment with sonography (FAST) or diagnostic peritoneal lavage (DPL) can be used. Other diagnostic tests such as a computed tomography scan or various contrast studies can be used to more definitively classify the injury in both severity and location. [12] Local wound exploration is also another technique that may be utilized to determine how far the object penetrated. [13] Observation can be used in place of surgery as it can substitute an unnecessary surgery, which makes it the preferred treatment of penetrating trauma secondary to a stab wound when hypovolemia or shock is not present. [14] Laboratory diagnostic studies such as a hematocrit, white blood cell count and chemical tests such as liver function tests can also help to determine the efficiency of care. [15]
Surgical intervention may be required, but it depends on what organ systems are affected by the wound and the extent of the damage. [3] It is important for care providers to thoroughly check the wound site in as much as a laceration of an artery often results in delayed complications sometimes leading to death. In cases where there is no suspicion of bleeding or infection, there is no known benefit of surgery to correct any present injuries. [16] Typically a surgeon will track the path of the weapon to determine the anatomical structures that were damaged and repair any damage they deem necessary. [17] Surgical packing of the wounds is generally not the favored technique to control bleeding as it can be less useful than fixing the directly affected organs. [18] In severe cases when homeostasis cannot be maintained the use of damage control surgery may be utilized. [19]
Stab wounds are one of the most common forms of penetrating trauma globally, but account for a lower mortality compared to blunt injuries due to their more focused impact on a person. [16] Stab wounds can result from self-infliction, accidental nail gun injuries, [20] [21] and stingray injuries, [22] however, most stab wounds are caused by intentional violence, as the weapons used to inflict such wounds are readily available compared to guns. [23] Stabbings are a relatively common cause of homicide in Canada [24] and the United States. [25] Typically death from stab wounds is due to organ failure or blood loss. They are the mechanism of approximately 2% of suicides. [26]
In Canada, homicides by stabbing and gunshot occur relatively equally (1,008 to 980 for the years 2005 to 2009). [24] In the United States guns are a more common method of homicide (9,484 versus 1,897 for stabbing or cutting in 2008). [25]
Stab wounds occur four times more than gunshot wounds in the United Kingdom, but the mortality rate associated with stabbing has ranged from 0-4% as 85% of injuries sustained from stab wounds only affect subcutaneous tissue. [7] [9] [27] In Belgium, most assaults resulting in a stab wound occur to and by men and persons of ethnic minorities. [28]
Sharp Instrument Homicides by Selected Countries [29] | ||||||
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Country | Sharp Instrument Homicides | Rate per 100,000 people | % Of Homicides Where Sharp Instrument Is Used | Year of Incidents | ||
Canada | 201 | 0.59 | 37% | 2011 | ||
United States of America | 1589 [30] [31] | 0.51 | 11% | 2012 | ||
Scotland | 26 [32] [33] | 0.49 | 58% | 2012/13 | ||
New Zealand | 15 [34] [35] | 0.32 | 26% | 2016 | ||
Australia | 94 [36] [37] | 0.43 | 2009 | |||
England & Wales | 193 [38] [39] | 0.34 | 39% | 2012 | ||
South Sudan | 15 | 0.14 | 1% | 2012 | ||
Egypt | 514 | 0.65 | 19% | 2011 | ||
South Africa | 6840 | 13.8 | 37% | 2007 | ||
Bahamas | 22 | 5.9 | 17% | 2011 | ||
Dominican Republic | 567 | 5.53 | 25% | 2012 | ||
Grenada | 10 | 9.44 | 71% | 2012 | ||
Jamaica | 215 | 7.81 | 19% | 2011 | ||
Saint Vincent and the Grenadines | 11 | 10.08 | 44% | 2010 | ||
Trinidad and Tobago | 56 | 4.22 | 16% | 2011 | ||
Belize | 41 | 12.94 | 33% | 2011 | ||
Costa Rica | 77 | 1.62 | 19% | 2012 | ||
El Salvador | 545 | 8.65 | 21% | 2012 | ||
Honduras | 717 | 9.04 | 10% | 2011 | ||
Nicaragua | 377 | 6.48 | 48% | 2010 | ||
Panama | 111 | 2.92 | 17% | 2012 | ||
Chile | 204 | 1.18 | 32% | 2011 | ||
Colombia | 2054 | 4.31 | 14% | 2011 | ||
Guyana | 59 | 7.38 | 45% | 2011 | ||
Uruguay | 68 | 2.01 | 34% | 2011 | ||
China | 3487 | 0.26 | 26% | 2010 | ||
Mongolia | 93 | 3.4 | 35% | 2011 | ||
Armenia | 14 | 0.47 | 26% | 2011 | ||
Azerbaijan | 33 | 0.36 | 17% | 2010 | ||
Cyprus | 6 | 0.52 | 26% | 2012 | ||
Bulgaria | 49 | 0.67 | 35% | 2012 | ||
Czech Republic | 40 | 0.38 | 47% | 2011 | ||
Hungary | 48 | 0.47 | 36% | 2012 | ||
Finland | 31 | 0.56 | 35% | 2012 | ||
Iceland | 1 | 0.30 | 100% | 2012 | ||
Albania | 30 | 0.95 | 19% | 2011 | ||
Andorra | 1 | 1.3 | 100% | 2010 | ||
Bosnia and Herzegovina | 4 | 0.10 | 8% | 2010 | ||
Croatia | 19 | 0.44 | 37% | 2012 | ||
Italy | 159 | 0.27 | 27% | 2009 | ||
Malta | 3 | 0.70 | 25% | 2012 | ||
Montenegro | 2 | 0.38 | 14% | 2011 | ||
Serbia | 19 | 0.20 | 17% | 2012 | ||
Slovenia | 6 | 0.30 | 43% | 2012 | ||
Spain | 142 | 0.31 | 39% | 2012 | ||
Macedonia | 2 | 0.10 | 7% | 2011 | ||
Austria | 27 | 0.30 | 39% | 2011 | ||
Luxembourg | 2 | 0.40 | 50% | 2011 | ||
Switzerland | 13 | 0.17 | 28% | 2011 | ||
Some of the first principles of wound care come from Hippocrates who promoted keeping wounds dry except for irrigation. [40] Guy de Chauliac would promote removal of foreign bodies, rejoining of severed tissues, maintenance of tissue continuity, preservation of organ substance, and prevention of complications. [40] The first successful operation on a person who was stabbed in the heart was performed in 1896 by Ludwig Rehn, in what is now considered the first case of heart surgery. [41] In the late 1800s it was hard to treat stab wounds because of poor transportation of victims to health facilities and the low ability for surgeons to effectively repair organs. However, the use of laparotomy, which has been developed a few years earlier, had provided better patient outcomes than had been seen before. [42] After its inception, the use of exploratory laparotomies was highly encouraged for "all deep stab wounds" in which surgeons were to stop active bleeding, repair damage, and remove "devitalized tissues". [43] Because laparotomies were seen to benefit patients, they were used on most every person with an abdominal stab wound until the 1960s when doctors were encouraged to use them more selectivity in favor of observation. [44] During the Korean War, a greater emphasis was put on the use of pressure dressings and tourniquets to initially control bleeding. [40]
An injury is any physiological damage to living tissue caused by immediate physical stress. Injuries to humans can occur intentionally or unintentionally and may be caused by blunt trauma, penetrating trauma, burning, toxic exposure, asphyxiation, or overexertion. Injuries can occur in any part of the body, and different symptoms are associated with different injuries.
A stabbing is penetration or rough contact with a sharp or pointed object at close range. Stab connotes purposeful action, as by an assassin or murderer, but it is also possible to accidentally stab oneself or others. Stabbing differs from slashing or cutting in that the motion of the object used in a stabbing generally moves perpendicular to and directly into the victim's body, rather than being drawn across it.
Internal bleeding is a loss of blood from a blood vessel that collects inside the body, and is not usually visible from the outside. It can be a serious medical emergency but the extent of severity depends on bleeding rate and location of the bleeding. Severe internal bleeding into the chest, abdomen, pelvis, or thighs can cause hemorrhagic shock or death if proper medical treatment is not received quickly. Internal bleeding is a medical emergency and should be treated immediately by medical professionals.
Major trauma is any injury that has the potential to cause prolonged disability or death. There are many causes of major trauma, blunt and penetrating, including falls, motor vehicle collisions, stabbing wounds, and gunshot wounds. Depending on the severity of injury, quickness of management, and transportation to an appropriate medical facility may be necessary to prevent loss of life or limb. The initial assessment is critical, and involves a physical evaluation and also may include the use of imaging tools to determine the types of injuries accurately and to formulate a course of treatment.
A penetrating head injury, or open head injury, is a head injury in which the dura mater, the outer layer of the meninges, is breached. Penetrating injury can be caused by high-velocity projectiles or objects of lower velocity such as knives, or bone fragments from a skull fracture that are driven into the brain. Head injuries caused by penetrating trauma are serious medical emergencies and may cause permanent disability or death.
A hemothorax is an accumulation of blood within the pleural cavity. The symptoms of a hemothorax may include chest pain and difficulty breathing, while the clinical signs may include reduced breath sounds on the affected side and a rapid heart rate. Hemothoraces are usually caused by an injury, but they may occur spontaneously due to cancer invading the pleural cavity, as a result of a blood clotting disorder, as an unusual manifestation of endometriosis, in response to pneumothorax, or rarely in association with other conditions.
Blunt trauma, also known as blunt force trauma or non-penetrating trauma, describes a physical trauma due to a forceful impact without penetration of the body's surface. Blunt trauma stands in contrast with penetrating trauma, which occurs when an object pierces the skin, enters body tissue, and creates an open wound. Blunt trauma occurs due to direct physical trauma or impactful force to a body part. Such incidents often occur with road traffic collisions, assaults, and sports-related injuries, and are notably common among the elderly who experience falls.
Hemoperitoneum is the presence of blood in the peritoneal cavity. The blood accumulates in the space between the inner lining of the abdominal wall and the internal abdominal organs. Hemoperitoneum is generally classified as a surgical emergency; in most cases, urgent laparotomy is needed to identify and control the source of the bleeding. In selected cases, careful observation may be permissible. The abdominal cavity is highly distensible and may easily hold greater than five liters of blood, or more than the entire circulating blood volume for an average-sized individual. Therefore, large-scale or rapid blood loss into the abdomen will reliably induce hemorrhagic shock and, if untreated, may rapidly lead to death.
A gunshot wound (GSW) is a penetrating injury caused by a projectile shot from a gun. Damage may include bleeding, bone fractures, organ damage, wound infection, and loss of the ability to move part of the body. Damage depends on the part of the body hit, the path the bullet follows through the body, and the type and speed of the bullet. In severe cases, although not uncommon, the injury is fatal. Long-term complications can include bowel obstruction, failure to thrive, neurogenic bladder and paralysis, recurrent cardiorespiratory distress and pneumothorax, hypoxic brain injury leading to early dementia, amputations, chronic pain and pain with light touch (hyperalgesia), deep venous thrombosis with pulmonary embolus, limb swelling and debility, and lead poisoning.
Emergency bleeding control describes actions that control bleeding from a patient who has suffered a traumatic injury or who has a medical condition that has caused bleeding. Many bleeding control techniques are taught as part of first aid throughout the world. Other advanced techniques, such as tourniquets, are taught in advanced first aid courses and are used by health professionals to prevent blood loss by arterial bleeding. To manage bleeding effectively, it is important to be able to readily identify types of wounds and types of bleeding.
Penetrating trauma is an open wound injury that occurs when an object pierces the skin and enters a tissue of the body, creating a deep but relatively narrow entry wound. In contrast, a blunt or non-penetrating trauma may have some deep damage, but the overlying skin is not necessarily broken and the wound is still closed to the outside environment. The penetrating object may remain in the tissues, come back out the path it entered, or pass through the full thickness of the tissues and exit from another area.
Tracheobronchial injury is damage to the tracheobronchial tree. It can result from blunt or penetrating trauma to the neck or chest, inhalation of harmful fumes or smoke, or aspiration of liquids or objects.
Abdominal trauma is an injury to the abdomen. Signs and symptoms include abdominal pain, tenderness, rigidity, and bruising of the external abdomen. Complications may include blood loss and infection.
Diaphragmatic rupture is a tear of the diaphragm, the muscle across the bottom of the ribcage that plays a crucial role in breathing. Most commonly, acquired diaphragmatic tears result from physical trauma. Diaphragmatic rupture can result from blunt or penetrating trauma and occurs in about 0.5% of all people with trauma.
An exploratory laparotomy is a general surgical operation where the abdomen is opened and the abdominal organs are examined for injury or disease. It is the standard of care in various blunt and penetrating trauma situations in which there may be life-threatening internal injuries. It is also used in certain diagnostic situations, in which the operation is undertaken in search of a unifying cause for multiple signs and symptoms of disease, and in the staging of some cancers.
A femoral fracture is a bone fracture that involves the femur. They are typically sustained in high-impact trauma, such as car crashes, due to the large amount of force needed to break the bone. Fractures of the diaphysis, or middle of the femur, are managed differently from those at the head, neck, and trochanter; those are conventionally called hip fractures. Thus, mentions of femoral fracture in medicine usually refer implicitly to femoral fractures at the shaft or distally.
Trauma surgery is a surgical specialty that utilizes both operative and non-operative management to treat traumatic injuries, typically in an acute setting. Trauma surgeons generally complete residency training in general surgery and often fellowship training in trauma or surgical critical care. The trauma surgeon is responsible for initially resuscitating and stabilizing and later evaluating and managing the patient. The attending trauma surgeon also leads the trauma team, which typically includes nurses and support staff, as well as resident physicians in teaching hospitals.
A liver injury, also known as liver laceration, is some form of trauma sustained to the liver. This can occur through either a blunt force such as a car accident, or a penetrating foreign object such as a knife. Liver injuries constitute 5% of all traumas, making it the most common abdominal injury. Generally nonoperative management and observation is all that is required for a full recovery.
Damage control surgery is surgical intervention to keep the patient alive rather than correct the anatomy. It addresses the "lethal triad" for critically ill patients with severe hemorrhage affecting homeostasis leading to metabolic acidosis, hypothermia, and increased coagulopathy.
Vaginal evisceration is an evisceration of the small intestine that occurs through the vagina, typically subsequent to vaginal hysterectomy, and following sexual intercourse after the surgery. It is a surgical emergency.