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MINISTRY OF HEALTHCARE OF UKRAINE DANYLO HALYTSKY LVIV NATIONAL MEDICAL UNIVERSITY SURGICAL DEPARTMENT #1 THORACIC TRAUMA Guidelines for Medical Students LVIV 2019

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Page 1: MINISTRY OF HEALTHCARE OF UKRAINE DANYLO HALYTSKY …

MINISTRY OF HEALTHCARE OF UKRAINE

DANYLO HALYTSKY LVIV NATIONAL MEDICAL UNIVERSITY

SURGICAL DEPARTMENT #1

THORACIC TRAUMA

Guidelines for Medical Students

LVIV – 2019

Page 2: MINISTRY OF HEALTHCARE OF UKRAINE DANYLO HALYTSKY …

Approved at the meeting of the surgical methodological commission of Danylo

Halytsky Lviv National Medical University (Meeting report № ___ of _____________

___2019)

Guidelines prepared:

LUKAVETSKYJ Oleksij Vasylovych – PhD, professor, chief of Surgical

Department #1 at Danylo Halytsky Lviv National Medical University

VARYVODA Eugene Stepanovych − PhD, associate professor of Surgical

Department #1 at Danylo Halytsky Lviv National Medical University

CHEMERYS Orest Myroslavovych – PhD, assistant professor of Surgical

Department #1 at Danylo Halytsky Lviv National Medical University

STOYANOVSKY Igor Volodymyrovych – PhD, associate professor of Surgical

Department #1 at Danylo Halytsky Lviv National Medical University

Referees:

Responsible for the issue first vice-rector on educational and pedagogical affairs at

Danylo Halytsky Lviv National Medical University, corresponding member of

National Academy of Medical Sciences of Ukraine, PhD, professor M.R. Gzegotsky

Page 3: MINISTRY OF HEALTHCARE OF UKRAINE DANYLO HALYTSKY …

I. Background

About 15% of war injuries involve the torso. Those injuries involving the

vasculature of the mediastinum (heart, great vessels, and pulmonary hilum) are

generally fatal on the battlefield. Injuries of the lung parenchyma (the vast majority)

can be managed by the insertion of a chest tube and basic wound treatment. Although

penetrating injuries are most common, blunt chest trauma may occur and can result in

disruption of the contents of the thorax, as well as injury to the chest wall itself. Blast

injuries can result in the rupture of air-filled structures (the lung), as well as penetrating

injuries from fragments.

The protection afforded by body armor greatly reduces the incidence of thoracic

injuries, compared with extremity or head/neck injuries. Unfortunately, not all

individuals have such protection; some tactical situations limit the use of body armor

and some sustain chest injuries despite protection. In addition, military surgeons

routinely treat injured civilians.

II. Learning Objectives

1. To study the etiological factors of thoracic trauma, classification, clinical

signs, diagnostic methods, treatment and complications (α = I).

2. To know the main causes of the thiracic injury, typical clinical course and

complications, diagnostic value of laboratory and instrumental methods of examination

and the principles of the modern conservative and surgical treatment (α = II).

3. To be able to collect and analyze the complaints and disease history,

thoroughly perform physical examination, determine the order of the most informative

examination methods and perform their interpretation, establish clinical diagnosis,

justify the indications for surgery, choose adequate method of surgical intervention

(α = III).

4. To develop creativity in solving complicated clinical tasks in patients with

atypical clinical course or complications of thoracic trauma (α = ІV).

III. Purpose of personality development

Development of professional skills of the future specialist, study of ethical and

deontological aspects of physicians job, regarding communication with patients and

colleagues, development of a sense of responsibility for independent decision making.

To know modern methods of treatment of patients with thoracic trauma and its

complications.

IV. Interdisciplinary integration

Subject To know To be able

Previous subjects

1. Anatomy and

Physiology

Anatomical structure,

blood supply, innervation

of the organs of thoracic

cavity

Determine the topographic

location of thoracic unjuries

Page 4: MINISTRY OF HEALTHCARE OF UKRAINE DANYLO HALYTSKY …

V. Content of the topic and its structuring

Anatomical Considerations

Superior border is at the level of the clavicles anteriorly and the junction of the

C7 – Th1 vertebral bodies posteriorly. The thoracic inlet at that level contains major

arteries (common carotids and vertebrals), veins (anterior and internal jugulars),

trachea, esophagus, and spinal cord.

Within or traversing the container of the chest itself are the heart and coronary

vessels, the great vessels - including arteries (aortic arch, innominate, right subclavian,

common carotid, left subclavian, and descending aorta), veins (superior and inferior

vena cava, azygous vein, and brachiocephalic vein), and pulmonary arteries and veins

- distal trachea, and main stem bronchi, lungs, and esophagus.

The inferior border is described by the diaphragm, attached anteriorly at the Th6

level and gradually sloping posteriorly to the Th12 level.

Physiology of Breathing At its simplest the respiratory system is composed of three main components:

• a membrane across which gas exchange takes place,

2. Pathomorphology

and Pathophysiology

Etiological factors of

disease

Describe macroscopic

changes of thorax and

identify morphological forms

3. Propedeutics of

internal diseases

Sequence of patient’s

survey and physical

examination of the injured

patients

Determine the patients

complaints, medical history

of the disease, perform

primary wound debridement

4. Pharmacology Groups and

representatives of

antibiotics, analgesics,

antiinflammatory drugs,

colloid and crystalloid

solutions

Prescribe conservative

treatment of patient with

thoracic trauma

5. Radiology Efficiency of radiological

investigation in patients

with thoracic trauma

Indications and descrition of

x-ray, ultrasound, CT scan

examination

Future subjects

Anesthesiology and

Critical Care

Medicine

Clinical signs urgent

conditions that occur in

patients with

complications of thoracic

injuries, methods of

diagnosis and

pharmacotherapy

Determine the symptoms of

urgent conditions, differential

diagnosis and treatment

Page 5: MINISTRY OF HEALTHCARE OF UKRAINE DANYLO HALYTSKY …

• a bellows mechanism to move gases to and from the membrane,

• and a control mechanism that drives the process while monitoring and making

adjustments.

We will consider each component in turn. Trauma patients may suffer

compromise at all three levels.

The control mechanism Breathing is automatic and subconscious with a conscious over-ride control

mechanism. The automatic control center (central pattern generator) is located in the

medulla oblongata of the brain stem and is the primary source of automatic respiratory

rhythm determining rate and depth of breathing. At rest the pacemaker cells discharge

every 5 seconds giving a resting breathing rhythm of approximately 12 breaths per

minute. The brain stem automatic control center has inspiratory and expiratory neurons

and receives input from chemoreceptors (CO2, O2, pH etc), mechanoreceptors (in the

ventilatory tissues), nociceptors, pathways that integrate breathing with other

physiologic processes (such as swallowing), and from higher centers with behavioral

and volitional activity (e.g. speech and breath-holding). Although the higher centers

have neurons providing input to the automatic control center they are not dependent

upon the automatic control center for their effect on breathing. Sensory receptor

information from within the lungs is conveyed to the brain in the vagus nerve. The

pacemaker cells have, amongst other receptors, opioid mu-receptors on their surface.

The effective neurologic output of the control mechanism is via the peripheral

nerves to:

• the muscles of ventilation

‣ diaphragm

‣ intercostals

• accessory muscles of ventilation:

• those affecting patency of the airways:

‣ oro-facial

‣ larynx

‣ pharynx

• and those attaching upon and affecting the chest wall:

‣ sternocleidomastoid

‣ pectorals

‣ abdominal wall muscles, etc.

Diagnosis and Management: Knowledge of the mechanism of injury (eg, blast, fragment, among others) may

increase the index of suspicion for a particular injury. A complete and accurate

diagnosis is usually not possible because of the limited diagnostic tools available in the

setting of combat trauma. Nonetheless, because injuries to the chest can profoundly

affect breathing and circulation (and, on rare occasion, the airway), a complete and

rapid assessment of each injury is mandatory.

- If the casualty is able to talk without hoarseness or stridor, there is reasonable

assurance that the airway is intact.

Page 6: MINISTRY OF HEALTHCARE OF UKRAINE DANYLO HALYTSKY …

Primary assessment The purpose of the primary survey is rapid targeted assessment of the airway,

breathing, and circulation to identify those injuries that MUST be corrected

immediately to prevent rapid death.

The conditions to look for during rapid and systematic primary survey are:

• tension pneumothorax

• open pneumothorax

• flail chest

• massive haemothorax

• cardiac tamponade

The airway (with C-spine control), breathing and circulation are assessed with

the patient usually in a supine position (unless airway management mandates an erect

posture) and adequate exposure. Control of the examination environment is necessary

to prevent undue cooling of the patient and to preserve dignity.

Airway assessment and management has been addressed in previous chapters.

Breathing and chest examination follows a rapid and clinically fluid progression

through inspection, palpation, percussion and auscultation.

Secondary survey Conditions to think about during the secondary survey are:

• lung contusion

• cardiac contusion

• rib fractures and flail segment

• blunt aortic injury

• oesophageal injury

• diaphragmatic rupture

During a more methodical examination of the respiratory system consider what

may be found and be recorded with:

Inspection:

• signs of cyanosis?

• depth and rate of breathing?

• use of accessory muscles?

• tracheal tugging?

• dilated neck veins?

• obvious wounds?

- penetration points

- open fractures

- abrasions, bruising associated with deceleration injury / blunt trauma

• don‟t forget the posterior chest

Palpation:

• tracheal position - is it deviated to one side?

• chest wall deformity?

• normal chest wall excursion?

• asymmetric chest wall movement?

• flail chest segment?

Page 7: MINISTRY OF HEALTHCARE OF UKRAINE DANYLO HALYTSKY …

• crepitus from rib fractures?

Percussion:

• resonant - is it normal?

• hyper-resonant - is there a pneumothorax?

• dull to percussion - is there haemothorax? or collapse? is it too early for

dullness from lung contusion or consolidation?

• do percussion notes change with altered posture from supine to erect?

Auscultation:

• Are breath sounds present and normal?

• Are breath sounds present throughout both lung fields?

Pulse-oximetry and chest x-ray (CXR) are adjuncts to your assessment; therefore

do not wait for their availability before starting your assessment. Act to treat what you

find that is of immediate threat to the patient.

Life-Threatening Injuries

Injuries requiring urgent intervention, include tension pneumothorax, massive

hemothorax, and cardiac tamponade.

1. Tension pneumothorax. A patient with a known chest injury presenting with an open airway and difficulty

breathing has a tension pneumothorax until proven otherwise. It requires rapid

decompression and the insertion of a chest tube. Needle decompression alone is

insufficient.

2. Massive hemothorax. The return of blood on chest tube placement may indicate a significant intrathoracic

injury. Generally, the immediate return of 1,500 cc of blood mandates thoracotomy.

When initial blood loss is <1,500 mL, but bleeding continues such that ongoing blood

transfusions are required and all other sources of hemorrhage are eliminated, then

thoracotomy may be indicated. Needle decompression will not identify hemothorax.

3. Cardiac tamponade. - Distended neck veins (may be absent with significant blood loss) in the presence of

clear breath sounds and hypotension indicate the possibility of life-threatening cardiac

tamponade.

- Fluid resuscitation may temporarily stabilize a patient in tamponade.

Perform an ultrasound if time permits.

If positive, proceed to the OR (pericardial window, sternotomy, thoracotomy). Any

pericardial blood mandates median sternotomy/thoracotomy.

A negative ultrasound requires either repeat ultrasound or pericardial window,

depending on the level of clinical suspicion.

Pericardiocentesis is only a stopgap measure on the way to definitive surgical repair.

Open pneumothorax (hole in chest wall) is treated by placing a chest tube through

a separate incision and sealing the hole. Alternatives include one-way valve chest

dressings or a square piece of plastic dressing taped to the chest on three sides as a

“flap valve.”

Page 8: MINISTRY OF HEALTHCARE OF UKRAINE DANYLO HALYTSKY …

Flail chest (entire segment of the chest wall floating due to fractures of a block of

ribs, with two fractures on each rib) is commonly associated with pulmonary contusion

under the flail segment. Patients with flail chest should be monitored closely for

respiratory distress. Pain control is essential and may require intercostal nerve blocks

or epidural catheters to optimize pulmonary mechanics. Patients with evidence of

respiratory distress, poor or marginal oxygenation, or ventilation should be intubated

and mechanically ventilated prior to air evacuation.

Surgical Management

Most penetrating chest injuries reaching medical attention are adequately treated

with tube thoracostomy (chest tube) alone.

Tube Thoracostomy (Chest Tube)

Indications.

- Known or suspected tension pneumothorax.

- Pneumothorax (including open).

- Hemothorax.

How to make procedure:

- In cases of tension pneumothorax, immediate decompression with a large bore

needle may be lifesaving. An IV catheter (14 gauge, 3.25 inches in length) is inserted

in the midclavicular line in the second interspace (approximately 2 fingerbreadths

below the clavicle on the adult male). Do not place medial to the nipple to avoid

cardiac or vascular injury. Entry is confirmed by the sound of air passing through

the catheter, if a pneumothorax was actually present. This must be rapidly followed

by the insertion of a chest tube.

- In a contaminated environment, a single gram of IV Cefazolin (ANCEF) is

recommended.

-If time allows, prep the anterior and lateral chest on the affected side with

povidone-iodine.

- Identify the incision site along the anterior axillary line, intersecting the 5th or 6th

rib. This is at nipple level in males and at the inframammary crease in females.

- Inject a local anesthetic in the awake patient, if conditions allow.

- Make a transverse incision, 3-4 cm in length, along and centered over the rib,

carrying it down to the bone.

- Insert a curved clamp in the incision, directed over the top of the rib, and push into

the chest through the pleura. A distinct pop is encountered when entering the chest, and

a moderate amount of force is necessary to achieve this entry. A rush of air out of the

chest will confirm a tension pneumothorax. Insertion depth of the tip of the clamp

should be limited by the surgeon’s hand to only 3 or 4 cm to make sure that the clamp

does not travel deeper into the chest, resulting in damage to underlying structures.

- Spread the clamp gently and remove. The operator’s finger is then inserted to

confirm entry.

- Insert a chest tube (24-36 Fr gauge) into the hole. All chest tube side holes must be

in the pleural space (ie, not just below skin level). If no chest tubes are available, an

adult endotracheal tube may be used.

Page 9: MINISTRY OF HEALTHCARE OF UKRAINE DANYLO HALYTSKY …

- Attach a chest tube to a Heimlich valve, sealed Pleurovac, or bottles. In a resource-

constrained environment, a cutoff glove with a slit in the end, or a Penrose drain may

be attached to the end of the chest tube.

- Secure the tube with sutures, if possible, and dress to prevent contamination.

Resuscitative Thoracotomy - Only indicated in penetrating injury in extremis or with recent loss of vital signs.

- If performed, a rapid assessment of injuries should be made; and, in the case of

unsalvageable injuries, the procedure should be immediately terminated.

Procedure - With the patient supine, make an incision in the left inframammary fold starting

at the lateral border of the sternum extending to the midaxillary line.

-The procedure should be abandoned upon discovery of devastating injuries to

the heart and great vessels.

- An immediate right chest thoracostomy should be performed concurrently. If

bleeding is identified, a rapid extension across the midline should be done, crossing

through the sternum with a Lebsche sternum knife and performing a mirror-image

thoracotomy. When doing this procedure, you will cut across both internal mammary

arteries, which will be a significant source of bleeding and must be clamped as soon as

possible.

- Elevating the anterior chest wall will expose virtually all mediastinal structures.

- Open the pericardium and assess the heart. Use an anterior longitudinal incision

to avoid phrenic nerve injury.

Priorities are to stop bleeding and restore central perfusion. - Holes in the heart and/or great vessels should be temporarily occluded.

Temporary occlusion can be achieved with fingers, side-biting clamps, or Foley

catheters with 30 cc balloons. Any other sterile device of opportunity is acceptable. A

finger is usually sufficient, and less traumatic.

- Major pulmonary hilar injuries should be cross-clamped en masse.

- Distal thoracic aorta should be located, cross-clamped, and cardiac function

restored via defibrillation or massage. (Make sure to open the mediastinal pleura over

the aorta to securely apply the vascular clamp.)

- If unable to restore cardiac function rapidly, abandon the operation.

- With successful restoration of cardiac function, injuries should be more definitively

repaired.

Median Sternotomy

In general, exposure to the heart and great vessels is best achieved through a

median sternotomy. For proximal left subclavian artery injuries, additional exposure

(trap door) may be necessary.

Indications:

- suspected cardiac injury.

- positive pericardiocentesis/subxiphoid pericardial window.

- suspected injury to the great vessels in the chest.

- suspected distal tracheal injury.

Page 10: MINISTRY OF HEALTHCARE OF UKRAINE DANYLO HALYTSKY …

How to make procedure:

- In the supine position, make a midline skin incision from the sternal notch to just

below the xiphoid.

- Through blunt/sharp dissection, develop a plane for several centimeters both

superiorly and inferiorly beneath the sternum.

- Divide the sternum with a sternal saw or Lebsche knife. Keep the foot of the

knife/saw tilted up toward the undersurface of the sternum to avoid cardiac injury.

Bone wax can be used to decrease bleeding on the cut edges of the sternum.

- Separate the halves of the sternum using a chest retractor.

- Carefully divide the pericardium superiorly, avoiding the innominate vein, and

exposing the heart and base of the great vessels.

- Close with wire suture directly through the halves of the sternum, approximately 2

cm from the edge, or around the sternum through the costal interspaces using wire

sutures. Large, permanent sutures can be used if wire is unavailable.

- Place one or two mediastinal tubes for drainage, exiting through a midline stab

wound inferior to the mediastinal skin incision.

Thoracoabdominal injuries.

Indication.

- Combined thoracic and abdominal injuries.

How to make procedure:

- The resuscitative thoracotomy can be continued medially and inferiorly across the

costal margin into the abdominal midline to complete a thoracoabdominal incision.

- Alternatively, a separate abdominal incision can be made.

- With right-sided lower chest injuries, the liver and retrohepatic vena cava can be

exposed well using a right thoracoabdominal approach.

Heart.

The usual result of high-velocity injuries to the heart is irreparable destruction of the

muscle.

- Isolated punctures of the heart should be exposed (opening the pericardium) and

occluded by finger pressure. Other methods include the use of a Foley catheter or skin

staples.

- Use pledgeted horizontal mattress sutures (2-0 PROLENE) on a tapered needle for

definitive repair. Care must be taken to avoid additional injury to coronary vessels.

Extreme care must be taken to avoid tearing the cardiac muscle. Autologous

pericardium can be used if commercial pledgets are not available.

- Atrial repairs may include simple ligature, stapled repair, or running closures.

- Temporary inflow occlusion may prove helpful in repair.

- More complex repairs are impractical without cardiac bypass.

Lung.

-Tube thoracostomy alone is adequate treatment for most simple lung parenchymal

injuries.

- Large air leaks not responding to chest tubes or that do not allow adequate

ventilation will require open repair (see section on “Tracheobronchial Tree”).

Page 11: MINISTRY OF HEALTHCARE OF UKRAINE DANYLO HALYTSKY …

- Posterolateral thoracotomy is preferred for isolated lung injuries. Anterior

thoracotomy may also be used.

- Control simple bleeding with absorbable suture on a tapered needle. Alternatively,

staples (eg, TA-90) may be used for bleeding lung tears.

Tracheobronchial tree.

- Suspect the diagnosis with massive air leak, frothy hemoptysis, and

pneumomediastinum.

- Confirm by bronchoscopy.

- Airway control is paramount.

- Median sternotomy is best approach.

- Repair over endotracheal tube with absorbable suture— may require segmental

resection. Bolster with pleural or intercostal muscle flap, especially between the

trachea and esophagus.

Temporizing measures include:

-Single lung ventilation.

- Control the airway through the defect.

Esophagus. -Isolated thoracic esophageal injuries are exceedingly rare. They will usually be

diagnosed incidentally associated with other intrathoracic injuries.

-Diagnostic clues include pain, fever, leukocytosis, cervical emphysema, Hamman’s

sign, chest X-ray evidence of pneumothorax, mediastinal air, and pleural effusion.

Contrast swallow may confirm the diagnosis.

-Start IV antibiotics as soon as the diagnosis is suspected, and continue post-op until

fever and leukocytosis resolve. This is an adjunctive measure only. Surgery is the

definitive treatment. -For stable patients in a forward location, chest tube drainage and a nasogastric tube

placed above the level of injury are temporizing measures. Ideally, primary repair is

performed within 6–12 hours of injury. Beyond 12 hours, isolation of the injured

segment may be necessary.

-Locate the injury by mobilizing the esophagus. Primarily repair with a single layer

or two layers of 3-0 absorbable sutures and cover with the pleural or intercostal muscle

flap.

-Drainage with chest tubes (one apical, one posterior) is recommended.

-If unable to primarily repair (as with a large segmental loss or severely

contaminated/old injury), staple above and below the injury, place a nasogastric tube

into the upper pouches, and place a gastrostomy tube into the stomach. Drain the chest

as indicated previously. Complex exclusion procedures are not indicated in a forward

operative setting.

-An alternative when the esophageal injury is too old for primary repair is to close

the injury over a large T-tube, which converts the injury to a controlled fistula. The

mediastinum is then widely drained using chest tubes or closed-suction catheters

placed nearby. After a mature fistula tract is established, slowly advance the T-tube;

later, the mediastinal drains can be slowly advanced.

Page 12: MINISTRY OF HEALTHCARE OF UKRAINE DANYLO HALYTSKY …

Diaphragm. All injuries of the diaphragm should be closed.

-Lacerations should be reapproximated with nonabsorbable 0 or 2-0 running or

interupted sutures.

-Care should be exercised in the central tendon area to avoid inadvertent cardiac

injury during the repair.

-If there is significant contamination of the pleural space by associated enteral

injuries, anterior thoracotomy and pleural irrigation and drainage with two well-placed

chest tubes should strongly be considered.

-Inadequate irrigation and drainage, such as when attempted through the

diaphragmatic defect via the abdomen, can lead to a high incidence of empyema.

Blunt cardiac injury (BCI)

Blunt cardiac injury (BCI) encompasses a wide spectrum of clinical manifestations,

ranging from an asymptomatic myocardial bruise to cardiac rupture and death. Blunt

injury to the heart is involved in up to 20% of all motor vehicle collision deaths. The

incidence of BCI in all blunt thoracic trauma patients is approximately 20 %; however,

in patients with severe thoracic injury or multiple injuries, the incidence of BCI may

be as high as 76 %. No gold standard exists for the diagnosis of BCI. A mechanism of

injury consistent with BCI, combined altered cardiac function, provides a practical

means of diagnosing BCI. Attention has focused on identifying those patients who will

develop complications as a result of BCI. The difficulty in defining this phenomenon

has led to a classification that defines BCI according to the sequela of the injury: BCI

with cardiac free wall rupture; BCI with septal rupture; BCI with coronary artery

injury; BCI with cardiac failure; BCI with complex arrhythmias and BCI with minor

ECG or cardiac enzyme abnormalities.

Mechanism of injury

BCI arises from a variety of mechanisms including:

- Direct precordial impact

- Crush injury resulting from compression between the sternum and spine

- Deceleration or torsion causing a tear in the heart at a point of fixation, such as

between the right atrium and vena cava

- Hydraulic effect resulting in rupture, such as that seen during an abrupt abdominal

compression that results in significantly elevated venous pressure that is transmitted to

the right atrium or ventricle

- Blast injury

Diagnosis of BCI

Few clinical signs or symptoms are specific for BCI. The most common finding

associated with BCI is chest pain. This pain may or may not be anginal in nature, and

it is usually a result of associated thoracic trauma. Because BCI is usually the result of

a high-velocity impact, associated injuries are common. Dyspnea, chest wall

ecchymoses, flail chest, and sternal fractures should raise suspicion for BCI. Cardiac

dysfunction can cause distended neck veins if hemorrhage has been minimal. Although

ausculatory findings such as a thrill, murmur, or rub should raise suspicion for BCI,

these findings are usually not present. Physical exam findings concerning for BCI are

Page 13: MINISTRY OF HEALTHCARE OF UKRAINE DANYLO HALYTSKY …

often the result of cardiac dysfunction, and they are typified by dysrhythmias, global

cardiac ischemia, or low cardiac output and hypotension. Controversy exists regarding

the utility of using ECG, cardiac enzymes, and echocardiography to diagnose BCI.

Management of BCI

Therapeutic interventions currently focus on the treatment of BCI-related

complications. BCI with minor ECG or cardiac enzyme abnormalities rarely produce

clinically significant sequela, and these minor abnormalities usually resolvev without

any intervention within 24 hours. Anecdotal reports have shown that antiarrhythmias

can treat BCI with complex arrhythmias. BCI with heart failure requires a precise

understanding of the preload and afterload characteristics of both ventricles. Left

ventricular function is evaluated best by transesophageal echocardiography. Either

transesophageal echocardiography or right heart catheterization can be used to evaluate

the function of the right ventricle. These investigations can be used to quantitate

volume loading of the heart to restore adequate cardiac output. Additionally, high

pulmonary vascular resistance resulting from pulmonary contusion, mechanical

ventilation, or acute respiratory distress syndrome (ARDS) can be diagnosed, allowing

for interventions to reduce right ventricular work. Low cardiac output, resulting from

dysfunction of either , may respond to inotropic support. A cardiothoracic surgeon

should be consulted for any patient suspected of having BCI with cardiac-free wall

rupture, septal rupture, coronary artery injury, or valve injury.

I. Plan and structure of class

#

Main stages of the

class, their

function and

meaning

Learning

objective in

the levels

of

mastering

Methods of

teaching and

control

Guidelines

Time

distributi

on

1.

2.

3.

Preliminary stage

Arrangements

Determining the

relevance,

educational

objectives and

motivation

Control of the

intput level of

knowledge, skills

and abilities:

1. Etiology and

pathogenesis

2. Clinical signs

3. Diagnosis

І

ІІ

ІІ

Survey

Survey, tests

1. Relevance

2. Educ. objectives

Questions

Questions, II level

MCQs

5 min.

5 min.

45 min.

Page 14: MINISTRY OF HEALTHCARE OF UKRAINE DANYLO HALYTSKY …

4. Treatment

ІІ

Clinical

cases, MCQs

Clinical

cases, MCQs

Typical clinical

cases, II level MCQ

Typical clinical

cases, II level MCQ

4. Main stage

Formation of

students

professional skills:

1. Master the skills

of the physical

examination

2. Perform

physical

examination of

the patient with

thoracic trauma

3. Plan the patients

laboratory and

instrumental

examinations

4. Differential

diagnosis

5. Treatment

schemes

ІІІ

Practical

training

Practical

training

Practical

training

Practical

training

Practical

training

6. Patients with

thoracic trauma

7. Patients with

thoracic trauma

Clinical cases, III

level MCQs

Diagnostic

algorithms,

atypical clinical

cases

Typical and

atypical clinical

cases

95 min.

5.

6.

Final stage

Correction of the

professional skills

and abilities

Summarizing class

ІІІ

Personal

skills

control,

analysis and

evaluation of

the results of

clinical

work,

clinical

cases, level

III MCQs

Clinical cases and

III level MCQs

Results of patients

examination,

30 min.

Page 15: MINISTRY OF HEALTHCARE OF UKRAINE DANYLO HALYTSKY …

7.

Homework

(recommendation

of basic and

additional

literature)

MCQs and clinical

cases solutions

Oriented card for

independent work

with literature

II. Materials for classes

Questions (α =І, α =ІІ)

1. Etiology and pathogenesis of thoracic trauma.

2. Classification of thoracic trauma.

3. Clinical signs of thoracic trauma.

4. Laboratory diagnosis of thoracic trauma.

5. Role of localization procedures in diagnosing of thoracic trauma.

6. Differential diagnosis of thoracic trauma.

7. Treatment of thoracic trauma.

8. Complications of thoracic trauma.

MCQs (α =ІІ)

1. Name the most common thoracic injury in blunt trauma?

A. Hemothorax

B. Flail chest

C. Rib fracture

D. Sternal fracture

E. Pericardial tamponade

Correct answer: C

2. Which statement concerning 1st and 2nd ribs fractures is wrong?

A. Require high force

B. Frequently have injury to aorta

C. Frequently have injury to bronchi

D. May injure subclavian artery/vein

E. Causes pulsus paradoxicus

Correct answer: E

3. Most oftenly fracture of 11th or 12th ribs are associated with:

A. Flail chest

B. Damage to underlying abdominal solid organs (liver, spleen, kidney)

C. Injury to aorta

D. Injury to bronchi

E. Pneumothorax

Correct answer: B

4. Select the proper intervention for a life-threatening injury of the chest: OPEN

PNEUMOTHORAX

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A. Endotracheal intubation

B. Cricothyroidotomy

C. Subxiphoid window

D. Tube thoracostomy

E. Occlusive dressing

Correct answer: E

5. Select the proper intervention for a life-threatening injury of the chest: TENSION

PNEUMOTHORAX

A. Endotracheal intubation

B. Cricothyroidotomy

C. Subxiphoid window

D. Tube thoracostomy

E. Occlusive dressing

Correct answer: D

Typical clinical cases (α =ІІ)

1. A 31-year-old man is brought to the emergency room following an automobile

accident in which his chest struck the steering wheel. Examination reveals stable vital

signs, but the patient exhibits palpable 7 rib fractures from the right side and

paradoxical movement of the right side of the chest. Chest x-ray shows no evidence of

pneumothorax or hemothorax, but a large pulmonary contusion is developing. Proper

treatment would consist of which of the following?

A. Tracheostomy, mechanical ventilation, and positive end-expiratory pressure

B. Stabilization of the chest wall with sandbags

C. Stabilization with towel clips

D. Immediate operative stabilization

E. No treatment unless signs of respiratory distress develop

Answer: A

2. A 45-year-old man was a passenger in a car when he was T-boned by a truck at

a high speed. He is short in breath, complains of severe pain in the chest, and is hypoxic

on the pulse oximeter. The breath sounds are diminished on the left and the percussion

note is completely dull. He rapidly becomes tachycardic and hypotensive.

A. Cardiac tamponade

B. Tension pneumothorax

C Open pneumothorax

D. Flail chest

E. Massive hemothorax

Answer: E

Atypical clinical case (α =ІIІ)

3. A 25-year-old man is shot in the left lateral chest. In the emergency department,

his blood pressure is 120/90 mm Hg, pulse rate is 104 beats per minute (bpm), and

respiration rate is 36 breaths per minute. Chest x-ray shows air and fluid in the left

pleural cavity. Nasogastric aspiration reveals blood-stained fluid. What is the best step

to rule out esophageal injury?

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A. Insertion of chest tube

B. Insertion of nasogastric tube

C. Esophagogram with gastrografin

D. Esophagoscopy

E. Peritoneal lavage

Answer: D

VIII. Literature

1. Arbabi S. The cushion effect. Journal of Trauma. 2003; 54: 1090-93.

2. Choban P. Obesity and increased mortality in blunt trauma. Journal of

Trauma. 1991; 31: 1253-57.

3. Newell M. Body mass index and outcomes in critically injured blunt trauma

patients: weighing the impact. J Am Coll Surg. 2007; 204: 1056-61.

4. Ryb G. Injury severity and outcome of overweight and obese patients after

vehicular trauma: a crash injury research and engineering network (CIREN) study.

Journal of Trauma. 2008; 64: 406-11.

5. Salomone J. Opinions of trauma practitioners regarding prehospital

interventions for critically injured patients. 2005; 58(3): 509-15.

6. Serrano P. Obesity as a risk factor for nosocomial infections in trauma patients. J

Am Coll Surg. 2010; 211: 61-67.

7. Shaftan G. Diagnosis of acute abdominal trauma. In: Principles and Practice

of Trauma Care. Baltimore. 2012; 2(24): 105-16.

8. Sturm R. Increases in clinically severe obesity in the United States 1986 –

2000. Arch Intern Med. 2003;163(18):2146-8.

9. Winfield R. Traditional resuscitative practices fail to resolve metabolic

acidosis in morbidly obese patients after severe blunt trauma. Journal of Trauma. 2010;

68: 317-330.

10. Wulfsohn NL. Ketamine dosage for induction based on lean body mass.

Anesth Analg. 1972; 51(2):299-305.