Chapter 21 Flail Chest Figure 21 1 Flail

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Chapter 21 Flail Chest Figure 21 -1. Flail chest. Double fractures of three or

Chapter 21 Flail Chest Figure 21 -1. Flail chest. Double fractures of three or more adjacent ribs produce instability of the chest wall and paradoxical motion of the thorax. Inset, Atelectasis, a common secondary anatomic alteration of the lungs. Slide 1 Copyright © 2006 by Mosby, Inc.

Anatomic Alterations of the Lungs Slide 2 Double fracture of numerous adjacent ribs Rib

Anatomic Alterations of the Lungs Slide 2 Double fracture of numerous adjacent ribs Rib instability Lung restriction Atelectasis Lung collapse Lung contusion Secondary pneumonia Copyright © 2006 by Mosby, Inc.

Etiology Slide 3 Direct compression by a heavy object Automobile accident Industrial accident Copyright

Etiology Slide 3 Direct compression by a heavy object Automobile accident Industrial accident Copyright © 2006 by Mosby, Inc.

Overview of the Cardiopulmonary Clinical Manifestations Associated with FLAIL CHEST The following clinical manifestations

Overview of the Cardiopulmonary Clinical Manifestations Associated with FLAIL CHEST The following clinical manifestations result from the pathophysiologic mechanisms caused (or activated) by Atelectasis (see Figure 9 -7) and Pneumonic Consolidation (see Figure 9 -8)— the major anatomic alterations of the lungs associated with flail chest (see Figure 21 -1). Slide 4 Copyright © 2006 by Mosby, Inc.

Figure 9 -7. Atelectasis clinical scenario. Slide 5 Copyright © 2006 by Mosby, Inc.

Figure 9 -7. Atelectasis clinical scenario. Slide 5 Copyright © 2006 by Mosby, Inc.

Figure 9 -8. Alveolar consolidation clinical scenario. Slide 6 Copyright © 2006 by Mosby,

Figure 9 -8. Alveolar consolidation clinical scenario. Slide 6 Copyright © 2006 by Mosby, Inc.

Clinical Data Obtained at the Patient’s Bedside Vital signs Increased respiratory rate Ø Stimulation

Clinical Data Obtained at the Patient’s Bedside Vital signs Increased respiratory rate Ø Stimulation of peripheral chemoreceptors Ø Other possible mechanisms • • • Slide 7 Decreased lung compliance Activation of the deflation receptors Activation of the irritant receptors Stimulation of the J receptors Pain/anxiety Increased heart rate, cardiac output, blood pressure Copyright © 2006 by Mosby, Inc.

Figure 21 -2. Lateral flail chest with accompanying pendelluft. Slide 8 Copyright © 2006

Figure 21 -2. Lateral flail chest with accompanying pendelluft. Slide 8 Copyright © 2006 by Mosby, Inc.

Figure 21 -3. Venous admixture in flail chest. Slide 9 Copyright © 2006 by

Figure 21 -3. Venous admixture in flail chest. Slide 9 Copyright © 2006 by Mosby, Inc.

Clinical Data Obtained at the Patient’s Bedside Paradoxic movement of the chest wall Cyanosis

Clinical Data Obtained at the Patient’s Bedside Paradoxic movement of the chest wall Cyanosis Chest assessment findings Ø Slide 10 Diminished breath sounds • On the affected as well as the unaffected side Copyright © 2006 by Mosby, Inc.

Clinical Data Obtained from Laboratory Tests and Special Procedures Slide 11 Copyright © 2006

Clinical Data Obtained from Laboratory Tests and Special Procedures Slide 11 Copyright © 2006 by Mosby, Inc.

Pulmonary Function Study: Lung Volume and Capacity Findings VT Slide 12 RV FRC TLC

Pulmonary Function Study: Lung Volume and Capacity Findings VT Slide 12 RV FRC TLC N or VC IC ERV RV/TLC% N Copyright © 2006 by Mosby, Inc.

Arterial Blood Gases Mild to Moderate Flail Chest p. H Slide 13 Acute alveolar

Arterial Blood Gases Mild to Moderate Flail Chest p. H Slide 13 Acute alveolar hyperventilation with hypoxemia Pa. CO 2 HCO 3 (Slightly) Pa. O 2 Copyright © 2006 by Mosby, Inc.

Time and Progression of Disease Onset Alveolar Hyperventilation 100 90 Pa. O 2 or

Time and Progression of Disease Onset Alveolar Hyperventilation 100 90 Pa. O 2 or Pa. CO 2 80 Point at which Pa. O 2 declines enough to stimulate peripheral oxygen receptors 70 60 Pa. O 2 50 40 30 20 Pa. C O 2 10 0 Slide 14 Figure 4 -2. Pa. O 2 and Pa. CO 2 trends during acute alveolar hyperventilation. Copyright © 2006 by Mosby, Inc.

Arterial Blood Gases Severe Flail Chest Acute ventilatory failure with hypoxemia p. H Slide

Arterial Blood Gases Severe Flail Chest Acute ventilatory failure with hypoxemia p. H Slide 15 Pa. CO 2 HCO 3 (Slightly) Pa. O 2 Copyright © 2006 by Mosby, Inc.

Time and Progression of Disease Onset Alveolar Hyperventilation Acute Ventilatory Failure 100 90 Pa

Time and Progression of Disease Onset Alveolar Hyperventilation Acute Ventilatory Failure 100 90 Pa 02 or Pa. C 02 80 70 60 Point at which Pa. O 2 declines enough to stimulate peripheral oxygen receptors Point at which disease becomes severe and patient begins to become fatigued O a. C 2 P 50 40 30 Pa O 2 20 10 0 Figure 4 -7. Pa. O 2 and Pa. CO 2 trends during acute ventilatory failure. Slide 16 Copyright © 2006 by Mosby, Inc.

Oxygenation Indices QS/QT D O 2 V O 2 Normal O 2 ER Slide

Oxygenation Indices QS/QT D O 2 V O 2 Normal O 2 ER Slide 17 C(a-v)O 2 (severe) Sv. O 2 Copyright © 2006 by Mosby, Inc.

Hemodynamic Indices (Severe Flail Chest) Slide 18 CVP RAP PA PCWP CO SV SVI

Hemodynamic Indices (Severe Flail Chest) Slide 18 CVP RAP PA PCWP CO SV SVI CI RVSWI LVSWI PVR SVR Copyright © 2006 by Mosby, Inc.

Radiologic Findings Chest radiograph Slide 19 Increased density Rib fractures Copyright © 2006 by

Radiologic Findings Chest radiograph Slide 19 Increased density Rib fractures Copyright © 2006 by Mosby, Inc.

Figure 21 -4. A, Chest X-ray film of a 20 -year-old female with a

Figure 21 -4. A, Chest X-ray film of a 20 -year-old female with a severe right-sided flail chest. B, Close-up of the same X-ray film, demonstrating rib fractures (arrows). Slide 20 Copyright © 2006 by Mosby, Inc.

General Management of Flail Chest Mild cases Medication for pain and routine bronchial hygiene

General Management of Flail Chest Mild cases Medication for pain and routine bronchial hygiene Severe cases Volume-controlled ventilation with PEEP Ø Slide 21 5 to 10 days usually adequate for sufficient bone healing Copyright © 2006 by Mosby, Inc.

General Management of Flail Chest Respiratory care treatment protocols Slide 22 Oxygen therapy protocol

General Management of Flail Chest Respiratory care treatment protocols Slide 22 Oxygen therapy protocol Hyperinflation therapy protocol Mechanical ventilation protocol Copyright © 2006 by Mosby, Inc.