Respiratory basics

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Questions and Answers

What is the primary purpose of performing a physical assessment?

  • To identify the patient's medication compliance
  • To document the patient's medical history
  • To provide baseline data for nursing interventions (correct)
  • To schedule follow-up appointments

Which method is primarily used to assess the density of underlying lung structures?

  • Percussion (correct)
  • Palpation
  • Inspection
  • Auscultation

What should a nurse look for during palpation of the thorax?

  • Position of trachea and bone tenderness (correct)
  • Breath sounds
  • Skin color and lesions
  • Chest expansion rates

In auscultation, what is crucial for comparing lung sounds?

<p>Using a systematic approach across the chest (C)</p>
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What should a nurse observe for during the inspection phase of a physical assessment?

<p>Chest excursion and symmetry (A)</p>
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Which condition is a potential cause of increased vibration during examination?

<p>Obesity (D)</p>
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Which of the following is a known cause of decreased vibrations during palpation?

<p>Pneumothorax (B)</p>
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Which of these options is NOT a reason for abnormal vibrations noted during palpation?

<p>Increased lung elasticity (B)</p>
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What might respiratory effort indicate when assessing lung conditions?

<p>Presence of chest wall abnormalities (D)</p>
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Which of the following could cause an increase in vibrations upon palpation?

<p>Consolidation of lung tissue (D)</p>
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In which scenario would you expect to see increased vibration due to respiratory conditions?

<p>Chronic obstructive pulmonary disease (COPD) (D)</p>
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Which respiratory condition is least likely to contribute to increased vibrations?

<p>Pleural effusion (A)</p>
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What is a common physical finding associated with atelectasis?

<p>Diminished breath sounds (D)</p>
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Which breath sound is characterized by a high-pitched, audible noise caused by airflow through partially obstructed airways?

<p>Stridor (C)</p>
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What is the cause of rales during a respiratory assessment?

<p>Fluid in the alveoli (A)</p>
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Which abnormal breath sound is typically associated with inflammation and secretions in the large airways?

<p>Crackles (A)</p>
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Which breathing sound is produced by air passing through narrowed airways?

<p>Wheeze (A)</p>
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Which of the following describes the sound of pleural friction rub?

<p>Grating sound caused by rubbing of pleura (D)</p>
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What characterizes normal vesicular breath sounds?

<p>Soft and low-pitched sounds (D)</p>
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Which abnormal sound is typically described as a high-pitched stridor often related to inflammation of the airways?

<p>Stridor (C)</p>
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During a respiratory assessment, which breath sound would you expect to hear in large airways affected by obstruction?

<p>Wheeze (B)</p>
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What is Tactile Fremitus primarily assessed for?

<p>Vibrations felt on the chest wall (C)</p>
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Which area of the chest is likely to have the greatest vibrations during Tactile Fremitus?

<p>The bases (B)</p>
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Why might clinical history taking be ineffective in some patients?

<p>Patients might have language barriers (A)</p>
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Which of the following is NOT a component of the inspection process in respiratory assessment?

<p>Measurement of respiratory rate (A)</p>
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How are normal vibrations distributed on the chest wall during Tactile Fremitus assessment?

<p>Greatest towards the bases (C)</p>
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Which of the following words is mentioned in the context of Tactile Fremitus assessment?

<p>Boat (A)</p>
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What is a common barrier to effective clinical history taking?

<p>Patient's reluctance to share information (D)</p>
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Which two sites are particularly involved in the inspection process during respiratory assessment?

<p>Tongue and mucous membrane (C)</p>
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Which of the following best describes normal Tactile Fremitus vibrations?

<p>Diminished towards the apex (A)</p>
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Which type of oxygen delivery system is characterized by accurate oxygen concentration delivery regardless of the patient's inspiratory pattern?

<p>Venturi mask (B)</p>
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What is one of the primary advantages of using Humidified High Flow Nasal Cannula (HHFNC) in emergency departments?

<p>It effectively reduces anatomical dead space (A)</p>
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Which of the following devices is classified as a reservoir system?

<p>Partial re-breather mask (B)</p>
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When selecting an oxygen delivery system, which factor should not be considered?

<p>The cost of the delivery device (C)</p>
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Which statement about high flow oxygen devices is true?

<p>They maintain a consistent flow to meet inspiratory requirements. (C)</p>
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What is a potential consequence of using a High Flow Nasal Cannula (HHFNC)?

<p>Creation of a reservoir of fresh oxygen (A)</p>
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Which of the following is NOT a characteristic of low flow oxygen systems?

<p>They are suitable for patients with high oxygen requirements. (B)</p>
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Arterial blood gas analysis (ABG) is primarily used for which purpose?

<p>To determine the balance of oxygen and carbon dioxide in the blood. (A)</p>
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What is the normal pH range in arterial blood?

<p>7.35-7.45 (C)</p>
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What does a low PaCO2 indicate in arterial blood gas analysis?

<p>Respiratory alkalosis (D)</p>
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Which of the following conditions results from low bicarbonate (HCO3) levels?

<p>Metabolic acidosis (D)</p>
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When analyzing ABGs, what does it indicate if PaCO2 and HCO3 move in opposite directions?

<p>Compensation by the body (A)</p>
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What is the normal range for partial pressure of oxygen (PaO2) in arterial blood?

<p>80-100 mmHg (B)</p>
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How does age affect the normal value of PaO2?

<p>It decreases by 10 mmHg for every 10 years after age 60. (A)</p>
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What should be immediately assessed in an ABG analysis for signs of hypoxaemia?

<p>PaO2 and SaO2 levels (C)</p>
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What could a low pH along with high PaCO2 indicate?

<p>Respiratory acidosis (D)</p>
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Flashcards

Inspection (Chest)

Direct observation of the patient's chest to identify any abnormalities such as chest excursion, symmetry, skin color, and lesions.

Palpation (Chest)

Using touch to examine the neck and thorax. This involves feeling for things like the trachea's position, subcutaneous emphysema, chest wall symmetry, tenderness, crepitus, pulsations, and bulges.

Percussion (Chest)

A technique using tapping to assess lung density. Different sounds are produced depending on whether the lungs are filled with air, fluid, or solid matter.

Auscultation (Chest)

Listening to lung sounds using a stethoscope. A systematic approach is used, auscultating the anterior, posterior, and lateral aspects of the chest during inspiration and expiration.

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Physical Assessment (Chest)

An assessment method used to collect baseline data, identify changes, and determine appropriate nursing interventions. It includes inspection, palpation, percussion, and auscultation.

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Tactile Fremitus

Vibrations felt on the chest wall as a patient speaks, used to assess lung density and air movement.

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Tactile Fremitus Location

Tactile fremitus is stronger at the lung bases than the apex.

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Increased Tactile Fremitus

Increased tactile fremitus suggests consolidation or fluid in the lungs.

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Decreased Tactile Fremitus

Decreased tactile fremitus indicates air trapping, pneumothorax, or thick pleura.

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Tactile Fremitus Quality

The quality or character of tactile fremitus can be described as normal, increased, decreased, or absent.

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Tactile Fremitus Words

The words 'ninety-nine' are often used when assessing tactile fremitus because they are easily understood and produce consistent vibrations.

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Effective History Taking

Effective clinical history taking involves an open-ended, nonjudgmental approach to understand a patient's concerns, medical history, and current symptoms.

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Barriers to History Taking

Barriers to effective clinical history taking can include language barriers, patient anxiety or discomfort, time constraints, or interruptions.

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Inspecting the Chest Wall

Inspection of the chest wall involves observing the patient for any abnormalities in chest movement, symmetry, skin color, and lesions.

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Inspecting Tongue and Mucous Membranes

Inspection of the tongue and mucous membranes can reveal signs of dehydration, infection, or inflammation.

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Increased Chest Vibration

Increased vibration in the chest can be caused by various factors such as fluid buildup (pleural effusion), collapsed lung (pneumothorax), air trapping (COPD, asthma), or increased tissue density (consolidation).

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Reduced Chest Vibration

Reduced chest vibration can be caused by conditions that decrease air movement, such as a collapsed lung (atelectasis).

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Abnormal Chest Wall Movement

Abnormal chest wall movements can indicate issues with breathing or lung function. For example, chest wall retractions during inhalation can suggest airway obstruction.

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Increased Respiratory Effort

Increased respiratory effort can indicate difficulty breathing and may be a sign of underlying lung disease. This can include rapid breathing, labored breathing, or use of accessory muscles.

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General Observation (Chest)

This is a general observation for the chest that can include inspecting for any abnormalities like chest excursion, symmetry, skin color, or lesions.

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Chest Configuration

This refers to the configuration of the chest, which can be influenced by underlying conditions like COPD, asthma, or obesity.

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Increased Muscle Mass (Chest)

Increased muscle mass, commonly associated with obesity, can affect chest wall movement and breathing.

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Bronchial Breath Sounds

A breath sound heard over the trachea, described as loud, high-pitched, and hollow.

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Bronchovesicular Breath Sounds

A breath sound typically heard over major bronchi, characterized by a medium pitch and intensity.

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Vesicular Breath Sounds

A breath sound heard over the peripheral lung fields, described as soft, low-pitched, and breezy.

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Rales (Crackles)

An abnormal breath sound characterized by crackling or popping sounds during inspiration, often caused by fluid buildup or inflammation in the alveoli.

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Wheezing

An abnormal breath sound characterized by a high-pitched, whistling sound during inspiration or expiration, usually indicating narrowed airways.

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Pleural Friction Rub

An abnormal breath sound characterized by a harsh, grating sound heard during both inspiration and expiration, usually caused by inflammation or irritation of the pleura.

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Stridor

An abnormal breath sound characterized by a high-pitched, crowing sound during inspiration, usually caused by obstruction in the upper airways.

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Respiratory Assessment

A respiratory assessment involves systematically inspecting, palpating, percussing, and auscultating the chest to gather information about the patient's respiratory status.

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High Flow Oxygen Devices

Oxygen delivery systems that provide a consistent oxygen concentration regardless of the patient's breathing pattern.

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Reservoir Systems

Oxygen delivery systems that allow the patient to breathe in extra oxygen stored in a reservoir, especially during increased breathing effort.

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Venturi Mask

A type of high flow oxygen device that provides precise oxygen concentration.

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Humidified High Flow Nasal Cannula (HHFNC)

A specialized type of high flow nasal cannula used to deliver humidified oxygen and reduce dead space in patients with respiratory distress.

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Fraction of Inspired Oxygen (FiO2)

The percentage of oxygen in the air a patient breathes in, expressed as a fraction.

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Arterial Blood Gas Analysis (ABG)

The analysis of blood gases from an artery to assess oxygenation, carbon dioxide levels, and pH.

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Minute Volume

A measure of the volume of air breathed in and out per minute.

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Anatomical Dead Space

The space in the airways where gas exchange doesn't occur, leading to wasted ventilation.

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PaO2 (Partial Pressure of Oxygen)

A measurement that reflects the amount of oxygen dissolved in arterial blood. It indicates how well the lungs are transferring oxygen into the bloodstream.

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SaO2 (Oxygen Saturation)

A measurement that reflects the percentage of hemoglobin in your blood that is saturated with oxygen. It shows how well oxygen is binding to red blood cells.

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pH (Blood pH)

A measure of the acidity or alkalinity of the blood. It's crucial for maintaining bodily functions.

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PaCO2 (Partial Pressure of Carbon Dioxide)

A measure of the level of carbon dioxide (CO2) dissolved in the blood. It reflects the respiratory component of acid-base balance.

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HCO3 (Bicarbonate)

A measurement that reflects the amount of bicarbonate (HCO3-) in the blood. It represents the metabolic component of acid-base balance.

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Respiratory Acidosis

A condition where the blood is too acidic. It's often caused by lung problems that prevent the body from getting rid of CO2.

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Respiratory Alkalosis

A condition where the blood is too alkaline. It's often caused by hyperventilation (rapid breathing) that reduces the CO2 level in the blood.

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Metabolic Acidosis

A condition where the blood is too acidic. It's often caused by metabolic problems that affect the body's ability to properly balance acidity.

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Study Notes

Respiratory Monitoring

  • Respiratory assessment is crucial in emergency nursing, requiring practice
  • It's part of a complete assessment, highlighting deficits in airway, ventilation, and gas exchange.
  • Assessment guides nursing and medical interventions for optimal respiratory function.

Learning Objectives

  • Demonstrate respiratory assessment competency in the emergency department.
  • Document findings and initiate appropriate nursing interventions post-assessment.
  • Analyze assessment findings to select suitable oxygen therapy devices.
  • Analyze and interpret arterial blood gas (ABG) results.

Key Concepts

  • Respiratory health assessment
  • Pulse oximetry
  • Oxygen therapy
  • Maintaining an artificial airway
  • Arterial blood gas analysis

Respiratory Health Assessment

  • Identifying gas-exchange adequacy (tissue oxygenation and carbon dioxide excretion) is vital.
  • Identifying recent signs of respiratory dysfunction is paramount.

Physical Assessment

  • Effective physical examination provides baseline data for efficient interventions
  • Includes inspection, palpation, percussion, and auscultation
  • Using a systematic format minimizes missed assessment aspects.

Inspection

  • Direct observation of the chest, focusing on excursion, symmetry, skin colour, and lesions.

Palpation

  • Examining the neck and thorax, looking for trachea position, subcutaneous emphysema, chest wall tenderness, crepitus, pulsations, and bulges.

Percussion

  • Assessing underlying lung density based on sounds (resonance, hyperresonance, tympany, dullness, or flatness)

Auscultation

  • Listening to and interpreting lung sounds using a stethoscope (anterior, posterior, and lateral aspects of the chest).
  • Listening during both inspiration and expiration, comparing both sides of the chest.

Reading

  • Review current critical care texts, highlighting effective clinical history taking, including barriers to effective history gathering, chest-wall configuration (inspection), respiratory effort (inspection), general observations, tactile fremitus assessment (palpation), respiratory expansion (palpation), and resonance, hyperresonance, tympany, dullness, and flatness (percussion)
  • Auscultation findings (crackles, wheezes) should be noted

Activity 1

  • Find a YouTube video describing and demonstrating normal and abnormal breath sounds (bronchial, bronchovesicular, vesicular; crackles, pleural friction rub, stridor, wheeze)

Activity 2

  • Complete a respiratory assessment on a patient in the ED. Document and discuss findings including:
    • Patient history
    • General observations (inspection and palpation)
    • Auscultation findings

Diagnostic Data

  • Pulse oximetry
  • ABGs (arterial blood gases)
  • Chest X-ray
  • Pulmonary function tests
  • Capnography

Pulse Oximetry

  • A non-invasive method to measure arterial oxygen saturation (SpO2).
  • Indications: general monitoring, transport, procedures, oxygen therapy, sleep disorders, limb injury monitoring.
  • Application sites: finger, toe, earlobe, bridge of nose.
  • Limitations: nail polish, poor peripheral perfusion, peripheral vasoconstriction, anaemia.

Oxygen Therapy

  • Oxygen therapy uses various devices (low and high flow).
  • Consideration must be given before choosing a system/device.
  • The use, dosage and method should be based on true hypoxia and pulse oximetry.

Activity 3

  • Locate oxygen delivery devices in the facility.
  • Discuss advantages and disadvantages of each device with a clinical support person.

Arterial Blood Gas Analysis

  • ABGs are a valuable diagnostic tool in critical care and emergencies.
  • Used to analyze oxygenation (PaO2, SaO2), acid-base status (pH, PaCO2, HCO3), and respiratory components.

Activity 4

  • Accessing procedures and guidelines.
  • Demostarting and discussing collection, labelling, and transport procedures for Arterial Blood Gas (ABG) samples
  • Discussing the processing for arterial blood gas samples

6 Step Analysis

  • Determining if the pH is normal (7.35-7.45), acidic (<7.35), or alkaline (>7.45).
  • Analyzing PaCO2 (35-45 mmHg) to determine respiratory acidosis OR alkalosis.
  • Analyzing HCO3 (22-26 mmol/L) to determine metabolic acidosis or alkalosis.
  • Matching PaCO2 or HCO3 with the pH to identify a specific acid-base disorder (respiratory acidosis, respiratory alkalosis, metabolic acidosis, or metabolic alkalosis).
  • Addressing any compensation (if present) from PaCO2 OR HCO3 moving in opposite directions
  • Analyzing PaO2 and SaO2 for oxygenation (e.g., hypoxaemia).

Activity 5

  • Analyze provided ABG results and determine if they are normal, acidic or alkaline. Determine the oxygenation and acid-base status.

Chest X-Ray

  • Chest X-rays are critical diagnostic tools for evaluating the lungs.
  • Common abnormalities include atelectasis, barotrauma, pleural effusion, pulmonary edema, pulmonary embolism, pneumonia, pneumothorax, and rib fractures.

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