Respiratory Module Lower Respiratory Tract Infections Lecture 6 Atelectasis • Definition – Closure or collapse of alveoli Atelectasis: Pathophysiology • Can occur as a result of i alveolar ventilation or • any type of blockage • that impedes the passage of air to and from the alveoli Atelectasis: Etiology • #1 post-op • h secretions or mucus plug • Chronic airway obstruction – i.e. lung CA • Excessive pressure on the lungs Atelectasis: Risk Factors • • • • • • • Altered breathing patterns Retained secretions Pain i LOC Immobility Prolonged supine position Post-op Atelectasis: Clinical Manifestations • “The development of Atelectasis usually is insidious” – Cough – sputum production – low-grade fever Atelectasis: Clinical Manifestations • If Atelectasis involves a large amount of lung tissue S&S include – Marked resp. distress – Dyspnea (orthopnea) – Pulse? • Tachycardia – Respiratory rate? • Tachypnea – Pleural pain – Central cyanosis Atelectasis: Assessment and Diagnostic Findings • breath sounds – i – Crackles • Chest X-ray – patchy infiltrates – consolidated area Atelectasis: Assessment and Diagnostic Findings • SpO2 – < 90% • PaO2 – i < 80 • PaCO2 – h > 45 • HCO3– h to compensate • ABG analysis – Resp. acidosis Atelectasis: Prevention • • • Frequent turning Early mobilization Strategies to expand the lungs – Deep breathing – Incentive Spirometry (IS) Atelectasis: Prevention • Strategies to manage secretions – Directed cough – Suctioning – Nebulizer – Chest physical therapy – h fluids Atelectasis: Management • Goal: – to h ventilation and i secretions • Frequent turning • Early amb. • Lung volume expansion maneuvers Atelectasis: Management • Coughing • PEEP • Bronchoscope Atelectasis: Management • If due to bronchial obstruction – Coughing – Suctioning – Chest physiotherapy – Nebulizers – Bronchodilators – Endotracheal intubation & mechanical ventilation Atelectasis: Management • If due to compression of the lung tissue – Decrease the compression – Thoracentesis – Chest tubes Small Group Questions 1. What can a nurse due to prevent a patient from acquiring Atelectasis? 2. Which patients are most likely to acquire Atelectasis? 3. How is Atelectasis treated? 4. Describe the ABG’s of a patient with Atelectasis. 5. Name 4 S&S of Atelectasis. Acute Tracheobronchitis AKA • Bronchitis • Acute Bronchitis Acute Tracheobronchitis Pathophysiology • Inflammation of the mucous membranes of the trachea & bronchial tree • Follows URI Acute Tracheobronchitis • What pathogen is most commonly responsible for tracheobronchitis? A. Bacteria B. Virus C. Fungus D. Parasite Acute Tracheobronchitis Etiology/Contributing factors • Infection • Inhalation of irritants – Sulfur dioxide – Nitrogen dioxide – Air pollutants • May be a complication of bronchial asthma Acute Tracheobronchitis Clinical Manifestations • Usually self limiting • Durations – Several days • Sputum – Mucopurulent • Cough – Dry, irritation, dyspnea • Pain – Sternal soreness • Fever / chills • Headache / gen. malaise Acute Tracheobronchitis Diagnostic findings • Sputum C&S • Chest x-ray • Breath sounds – Sonorous wheezes – Stridor • Symptoms Acute Tracheobronchitis Treatment • Symptomatic • Bed rest • Cool vapor • Steam • Moist heat to chest • If bacterial – Antibiotics Acute Tracheobronchitis Nursing interventions • Enc bronchial hygiene • Enc TCDB / h fluids • Position – HOB h • Caution against over exertion relaps • Auscultate BS • Check V/S Acute Tracheobronchitis Prevention • Treat URI Complications • Bronchopneumonia Small group questions??? 1. 2. 3. 4. 5. 6. Describe the pathophysiology of tracheobronchitis? What is the usual causative agent for tracheobronchitis? What does self-limiting mean? What breath sounds are associated with Tracheobronchitis? Identify a nursing diagnosis for tracheobronchitis? Name for nursing comfort measures for a pt. with tracheobronchitis? Pneumonia Pathophysiology • An inflammatory process in which there is consolidation – caused by exudates filling the alveolar spaces. • Gas exchange cannot take place in consolidated area Pneumonia Causative agents • Viral pneumonia • Bacterial Pneumonia – Streptococcus pneumoniae – Pneumocystis Pneumonia • • • • • Fungal pneumonia Radiation pneumonia Chemical pneumonitis Aspiration pneumonia Hypostatis pneumonia Pneumonia Which of the following components of respiration would pneumonia affect? (there may be more than one answer) A. Ventilation B. Perfusion C. Diffusion Pneumonia FYI • Most common cause of death from infectious agents • 66,000 deaths / year • $$$ Pneumonia Progression of events • Inflammation • h Exudate • i movement of O2 and CO2 • WBC migrate into the alveoli • Fill air-containing spaces • i ventilation • PaO2 ? –i Pneumonia - Classifications • Community-acquired pneumonia – CAP – Community or < 48 hr after hospitalization • Hospital-acquired pneumonia – HAP – Nosocomial – (CDC: 15-20% all pt get HAP) • Immuno-compromised host – Pneumocystis pneumonia (PCP) • Aspiration • Mrs. Sickly is admitted to Sierra View District Hospital on Wednesday Morning at 0930 AM for severe back pain and general declining state. She is 82 years old. On Friday morning at 0600 AM the nurse notes decreased breath sounds in the left lung, a productive cough and crackles. The doctor orders a chest x-ray which shows consolidation in the base of the left lung. She has pneumonia. What type of pneumonia does she have? A. B. C. D. Community acquired pneumonia Nosocomial pneumonia Immuno-compromised host Aspiration Pneumonia: Risk factors • • • • • • • • Immunosuppressant Smoking Prolonged immobility Depressed cough reflex NPO Alcohol intoxication Gen. anesthetic or opiod Advanced age Pneumonia S&S: bacterial • • Onset: • – Sudden • Pain: – – – – Severe chest pain sharp Guarding i mobility (affected side) • Temperature – High temp (>106) – Chills • • • Cough – Painful Sputum – Rust colored Breathing – Shallow – Rapid rate – Wheezing & crackles – Decreased BS Peristaltic activity – Slows down PaO2 – i – Cyanotic Pneumonia: S&S: viral pneumonia • Blood cultures: – Sterile • Sputum – Copious • Temperature – Seldom chills • Respirations – Slow – Wheezing & crackles – Diminished BS • Pulse – Slow • PaO2 – i – Cyanotic • Viral less severe than bacterial • Mortality is low Pneumonia S&S Elderly • General deterioration • Weakness • Abd. Symptoms • Anorexia • Confusion • Tachycardia • Tachypnea • Do Not C/O – – – – Cough Pain Fever Sputum Pneumonia Dx • Sputum C&S • CBC / WBC –h • Bacteria –i • Viral • ABG’s • Chest x-ray • What is a normal WBC count? – 5,000 – 10,000 mm3 Pneumonia • What would you expect the ABG’s of a person with bacterial pneumonia to have? • PaO2? • PaCO2? • pH • HCO3- ? - Why? • Analysis? Pneumonia Treatment • Antibiotics? • Rest • Fluids –h – Humidifier • Antipyretic • Anti-tussive? • • • • • Analgesics Anti-histamines Nasal Decongestants O2 Mucolytic drug – Alivaire – Via – nebulizer Pneumonia: Nrs. diagnosis • • • • • Ineffective airway clearance: r/t copious secretions Activity intolerance: r/t impaired resp. function Risk for deficient fluid volume: r/t fever & dyspnea Imbalanced nutrition: less than body requirement Deficit knowledge: about the treatment regimen and preventive health measures Pneumonia – Nursing Interventions • Improve airway patency – Hydration • 2-3 L/day • Humidifier – TCDB – Lung expansion maneuvers • Incentive spirometer – Chest physiotherapy – O2 Pneumonia – Nursing Interventions • Promoting rest & conserving energy – Position • Semi-fowler • Affected side for pain – Turn frequently – Moderate activity only • Promoting fluid intake – 2 L/day Pneumonia – Nursing Interventions • Maintaining nutrition – Gatorade – Ensure • Promoting the patients knowledge Pneumonia Prevention • Vaccine – Pneumonia – Flu • Treat URI • Avoid irritants Pneumonia Complications • Shock • Respiratory failure • Atelectasis • Pleural effusion • Superinfection Pneumonia: Small Group Questions 1. Describe the pathophysiology of pneumonia. 2. What is the difference btw bacterial and viral pneumonia? 3. What causes pneumocystis carinii? 4. What leads to hypostatis pneumonia? 5. What lab values are associated with bacterial pneumonia? / viral pneumonia? Pneumonia: Small Group Questions 6. What is Nosocomial pneumonia 7. Identify 5 risk factors for developing pneumonia 8. What medications might be administered to treat a pt. with pneumonia? 9. What nursing education would you give to a patient with pneumonia? 10. What ABG’s are associated with pneumonia? 11. What are the gerontological considerations of caring for the elderly in regards to pneumonia? SARS • Severe Acute Respiratory Syndrome • Viral respiratory illness • Caused by a coronavirus SARS • FYI – First reported in Asia 2003 – 8098 people worldwide dx with SARS in 2003 – 774 died! SARS • Mode of transmission – Respiratory droplet • When infected person coughs or sneezes • The droplet gets on another's mucous membranes or • On a surface that is touch by another and then they touch their own mucous membranes SARS S&S • Initial – – – – – High fever H/A Body aches Mild resp. symptoms After 2-7 days • After 2-7 days – Dry cough – Progressive hypoexmia – Pneumonia SARS • Treatment – Same for viral pneumonia • Infection control – Limit transmission • Neg pressure rooms • Protective equipment • Good cleaning or hands and room • Contain secretions Tuberculosis • AKA – TB – Consumption Tuberculosis - FYI • Causes more death than any other disease. 2 billion world wide, 15 million in the US Tuberculosis - FYI • When it becomes active it kills 60% of those not treated. Amounts to about 3 million deaths each year. In the US about 20,000 TB cases become active each year. Tuberculosis - FYI • When treated, about 90% of those with active TB survive! Tuberculosis • Pathophysiology – Mycrobacterium tuberculosis – Tubercle bacillus Question? • TB is caused by a(n)? A. Bacteria B. Virus C. Fungus D.Parasite E. Little green bugs! Tuberculosis Pathophysiology • Mode of transmission – Air-borne • alveoli • Multiplies in alveoli Tuberculosis • Immune response phase – Macrophages attack TB – TB has waxy cell wall that protects it from macrophages – Immune system surrounds the infected macrophages – Forms a Lesion – Called a Tubercle Tuberculosis • Dormant /latent phase – Contagious? • No – Symptomatic? • No – PPD? • positive – chest x-ray? • Negative Tuberculosis • Active phase – If an infected person has a weakened immune system, – the TB escapes and infects the body Tuberculosis • 5-10% become active • Only contagious when active • Primarily affect lungs but… – – – – Kidneys Liver Brain Bone Tuberculosis Etiology • Assoc. w/ – – – – – Poverty Malnutrition Overcrowding Substandard housing Inadequate health care • Elderly • HIV • Prison Tuberculosis S&S (active phase) • NOC sweats • Low grade fever • Wt loss • Chronic productive cough – Rust colored sputum – Thick • Hemoptysis • SOB Tuberculosis Diagnostic exams • PPD – – – – Mantoux skin test > 10mm in diameter induration Indicates: • Latent TB – Read • 48-72 after – Intradermal: 15-degrees – Do not rub Tuberculosis • Diagnostic tests – X-ray • Cavities or lesions – Symptoms – Acid Fast Bacillus Tuberculosis Treatment • INH – isonicotinyl hydrazine – Isoniazid – Toxic to the liver • Rifampin – Turns urine red • Streptomycin – Causes 8th cranial nerve damage – Acoustic nerve Tuberculosis: treatment • Rx toxic to liver and CNS • Must take >6months • Usually take > one at a time • Not contagious after 2wks of treatment • INH - TUBERCULOSIS MEDICATION Your positive skin test reaction shows that you have been exposed to tuberculosis at some time in the past. The tuberculosis germ is still present in your body. If your chest x-ray is normal, you do NOT have active TB disease. • TB germs can live in your body without making you sick. This is called TB infection, and this is what you have. Your immune system has trapped the TB germs. However, if your immune system or body defenses go down, as can happen with stress, longterm illnesses, old age, or other stressors such as alcohol abuse, the TB germs may multiply and develop into active TB disease. TB germs can affect other organs besides the lungs. • We recommend that you take preventive medicine now, before your TB infection becomes active TB disease. This medicine, taken every day for six or nine months, will kill the TB germs in your body so that you will not develop active TB disease. The medicine you will be taking is Isoniazid - also called “INH.” This medicine may deplete your body’s stores of vitamin B6, so you will also be given additional vitamin B6, to counteract possible side effects from a lack of this vitamin. Tuberculosis Nursing Dx • Impaired gas exchange • Ineffective airway clearance • Anxiety • Knowledge deficit • Alt. nutrition Tuberculosis Preventative measures • Clean well ventilated living areas • Resp. isolation – Negative pressure room • Vaccine? – BCG – Does not prevent TB – Causes a + PPD • If exposed take – INH Tuberculosis Complications • Malnutrition • S/E of medication treatment • Multi-drug resistance • Spread of TB infection Small Group Questions 1. 2. 3. 4. 5. What type of pathogen is TB? What is the mode of transmission? What are the classic S&S of TB ? How to administer and read a PPD? If a pt is PPD +, what does that mean? Small Group Questions 6. What is the standard screening method of TB? 7. That medications are used to treat TB, what are their side effects? 8. Where in the US is TB most prevalent? Why? Lung Abscess Pathophysiology • Localized necrotic lesion of the lung parenchyma containing purulent material • Lesion collapses and forms a cavity Lung Abscess Etiology / contributing factors • Aspiration • Obstruction of the bronchi Risk Factors: • Any one at risk for aspiration is at risk for lung abscess! – – – – – Impaired cough reflex CNS disorders NGT Alcoholism i LOC Lung Abscess S&S • Most often Rt or left side? – Right • Varied – – – – Dyspnea Weakness Fever Malodorous sputum – Blood sputum – Pleurisy – Anorexia Lung Abscess Dx • Absent / decreased BS • Chest x-ray • Sputum culture • Bronchoscopy Lung Abscess Tx • IV antimicrobial – Lg amounts • Chest drainage – Chest physiotherapy – TCDB • Diet – Protein • ↑ – Calories • ↑ – Catabolic state • Bronchoscopy – Drain lesion • Long recovery Lung Abscess Prevention • Antibiotics with dental work • Tx pneumonia • HOB h w/ NGT Lung Abscess Complications • Broncho-pleural fistula Small Group Questions 1. 2. 3. 4. 5. Describe the pathophysiology of a lung abscess in your own words? What is the most common etiology of a lung abscess? How is a lung abscess treated? – nonpharmaceutical. What nursing education can a nurse give to patient at risk of developing a lung abscess? What diet is usually prescribed to a patient with a lung abscess? Pleurisy Pathophysiology • Pleural membranes become inflamed • ‘catch” or rub on I • The parietal pleura has nerve endings • The visceral pleura does not have nerve endings Pleurisy Etiology/Contributing factors • Usually related to another underlying respiratory problem/disease – – – – Pneumonia TB Tumor/cancer Trauma Pleurisy S&S • #1 pain – with respiration – movement – deep breath, cough, sneeze – localized (usually one side or the other) – Sharp pain on inspiration – i when hold their breath – i as fluid develops • Shallow-rapid breathing Pleurisy • Dx exams/procedures – – S&S Auscultation ? • • – – pleural friction rub lower, lateral, anterior X-ray Thoracentesis Pleurisy Tx • Underlying cause • Control pain – Analgesics – Topical application or heat or cold – Indomethacin (Indocin) (NSAID) – Narcotics • Nerve block • Antibiotics Pleurisy Nursing intervention • Rest • Pain sympathy • Lay on ______ side – • Affected Splint side when DB and cough – – Pillows Hands • Complications – – – Pleural effusion Atelectasis Empyema Pleural Effusion: AKA - Hydrothorax Pathophysiology • Excess fluid collects in the pleural space • h fluid • to compression of the lung tissue • atelectasis • Effusion can be – clear fluid – bloody – purulent Pleural Effusion • Pleural Fluid circulated by lymphatic system. • Can be cause be a break in either system – Respiratory – Lymphatic Pleural Effusion Etiology • Symptom rather than a disease • Generally caused by another disorder – – – – – Heart failure TB Pneumonia Pulmonary embolism Tumors / Carcinoma Pleural Effusion S&S • i or absent BS • SOB • Percussion – dull • Lg amts mediastinum to shift towards… – unaffected side. • Tracheal deviation away from… – affected side S&S assoc. w/ the underlying cause. • i.e. pneumonia: – fever, chills, dyspnea, cough etc. Pleural Effusion DX exams/procedures • Thoracentesis – C&S fluid – Gram stain, acid-fast bacillus stain • TB – Cytologic analysis • • X-ray malignant cells Pleural Effusion: treatment • • • • • • Thoracentesis Chest tube Prevent re-accumulation of fluid Relieve comfort, dyspnea and respiratory compromise pursed lip and diaphragmatic breathing Remove fluids Rx. – Lasix • Anti-inflammatory + analgesics – Toradol – NSAIDS – Corticosteroids • Treat underlying cause • Chemical pleurodesis Pleural Effusion Nursing intervention • Implement medical regime • Pain management • Monitor chest tubes • Assist with thoracentesis Empyema Pathophysiology • Collection of pus in the pleural space Etiology • Usually secondary to pneumonia, TB or lung abscess Clinical manifestations and treatment • Same as pleural effusion • Elevated WBC Hemothorax Pathophysiology • Do you want to take a stab at it? • Blood in the pleural space Etiology • Trauma – #1 • Lung CA • Pulm. emboli Symptoms: • Same as pneumothorax Treatment • Chest tube • Treat underlying issue Nursing Management • Monitor chest tube • Monitor resp. status Small Group Questions 1. Describe the difference between pleurisy, pleural effusion, hemothorax and empyema. 2. What is the etiology for each of the above disorders? 3. Describe the medical treatment for the above. 4. What is the Rx treatment for each of the above? Pneumothorax Pathophysiology: • “Accumulation of air or gas in the pleural cavity” • Left-sided pneumothorax (on the right side of the image) on CT scan of the chest with chest tube in place. Pneumothorax Anatomy Review- Pleural cavity • Visceral pleura • • – Encases lungs Pleural space/cavity – – – – Area between pleura Contains fluid (4ml) Fluid prevents friction Fluid circulated by… • lymph system Parietal pleura – Lines chest wall Pneumothorax Anatomy review - Breathing • Diaphragm i & accessory muscles move outward • Negative pressure in the thoracic cavity • Negative pressure pulls air into the lungs via the nose and mouth • Diaphragm & accessory muscle relax (h) • air exhaled Pneumothorax • If the visceral pleural is perforated or the chest wall & parietal pleural are perforated – air enters the pleural space – negative pressure is lost – Lung on the affected side collapses Pneumothorax Classifications of pneumothorax • Spontaneous pneumothorax – – – with out injury Air enters the pleural cavity via the airway Farther classified as: • • Primary Secondary Pneumothorax Spontaneous (Primary) Pneumothorax • Pt. with no known lung disease. • D/T a rupture of a bulla in the lung. • Most often tall, thin men between 20 and 40 years old. Pneumothorax Spontaneous Secondary Pneumothorax • occurs in pt. with known lung disease • • – most often COPD Other lung diseases commonly assoc. with – – – – – Tuberculosis Pneumonia Asthma cystic fibrosis lung cancer Often severe & life threatening Pneumothorax • Traumatic Pneumothorax – D/T injury to the chest wall – Further classified as Open or closed Pneumothorax Open Pneumothorax • Air enters pleural cavity via outside • A free communication between the exterior and the pleural space as through an open wound – blowing wound – sucking wound • may be caused by a penetrating injury – stab wound, – gunshot wound – impaled object Pneumothorax Closed pneumothorax • Air enters the pleural cavity via lungs • D/t/ blunt chest trauma – Car crash – Fall – Crushing chest injury Pneumothorax Iatrogenic pneumothorax • D/T procedure / treatment Pneumothorax Tension Peumothorax • air accumulates in the pleural space with each breath. • The remorseless increase in intrathoracic pressure • massive shifts of the mediastinum away from the affected lung • compressing intrathoracic vessels • cardiovascular collapse Pneumothorax Tension Pneumonthorax • a piece of tissue forms a one-way valve that allows air to enter the pleural cavity but not to escape, overpressure can build up with every breath Pneumothorax Etiology / Contributing factors • Spontaneous – – • Lung disease - COPD Tall, thin men Traumatic – – A penetrating chest wound Barotrauma • • scuba divers Iatrogenic Pneumothorax – – – – * insertion of a central line * thoracic surgery * thoracentesis * pleural or transbronchial biopsy. Pneumothorax Clinical Manifestations (all types) • • • • • Sudden sharp chest pain Asymmetrical chest expansion dyspnea Cyanosis Percussion – Hyper resonance or tympany • Breath sounds – diminished – Absent Pneumothorax Clinical Manifestations (all types) • Respiratory distress • O2 Sats – decreased • Tachypnea • Tachycardia • Restlessness/ Anxiety Pneumothorax S&S of open pneumothorax • Cripitus – (subcutaneous emphysema) • Sucking chest wound” Pneumothorax S&S Tension pneumothorax • i cardiac output • Hypotension • Tachycardia (compensatory) • Tachypnea • Mediastinal shift and tracheal deviation – • • To the unaffected side Cardiac arrest Distended neck veins Pneumothorax Dx exam and tests • HX & PE • Chest x-ray • ABG’s – Initial PaCO2 • • – Decreased respiratory alkalosis Later ABG’s • • • Hypoxemia Hypercapnia Acidosis Pneumothorax Treatment - First aid: Open pneumothorax • Cover immediately with an occulsive dressing, made airtight with petroleum jelly or clean plastic sheeting. Pneumothorax Tx: Small pneumothorax • Spontaneous recovery – Bed rest – resolve on its own in 1 to 2 weeks • Remove with small bore needle inserted into the pleural space Pneumothorax Tx: Larger pneumothorax • Chest tube • Surgery repair • Pleurodesis – – – • • “glue” Very painful Prep with analgesic O2 Surgery Pneumothorax Nursing interventions • Closely monitor resp status • Frequent assess • • • • • – – – – – LOC Color VS Chest pain? Restlessness? Chest Tube Rest/Activity Balance Sedation Provide a means for communicate Educate patient & family • Notify MD for: – SpO2 < 90% or Change Greater Than 5% – Extubation – Respiratory Distress – Inadequate Sedation – h Peak Airway Pressure (Especially with Pressure Control Mode) Pneumothorax Complications • Recurrent pneumothorax – D/C • • • • • smoking high altitudes scuba diving flying in unpressurized aircrafts Cardiac damage Question? A client who has been on a ventilator for two days experiences acute respiratory distress accompanied by distended neck veins. The best action of the nurse is to: A. hand ventilate the client. B. prepare for chest tube insertion. C. call the physician immediately. D. perform emergency chest decompression. • The question is asking what the nurse should do when a client on a ventilator has these symptoms. When acute respiratory distress occurs along with neck vein distension, cyanosis and tracheal shift are evident, a tension pneumothorax has probably occurred. The client should be removed from the machine and ventilated by hand. Then the physician should be notified (option c). Equipment for chest tube insertion should be gathered (option b) so it will be ready for immediate use by the physician. Emergency chest decompression (option d) should only be attempted after specific training and if the physician will be delayed. • A patient is being treated with chest tubes because of a pneumothorax. The nurse recognizes that chest tubes may be used to: – – – – – Prevent pleural irritation Regain positive intra-pleural pressure Remove air from the intra-pleural space All of the above None of the above Small Group Questions 1. 2. 3. 4. 5. What is the pathophysiology of a pneumothorax? Describe the anatomy of the pleural membrane (including nerves endings) What is a spontaneous pneumothorax? What are some examples of an iatrogenic pneumothorax? Define an open and closed pneumothorax. Small Group Questions 6. Describe the mediastial shift in an pneumothorax. 7. 7. What is the first aid treatment of a traumatic pneumothorax (include assessment) 8. What is Pleurodesis? 9. What ABG’s would you expect to see late in a patient with a pneumothorax?
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