Respiratory Emergencies

Chapter 11

Respiratory System:

Anatomy and Function of the Lung: Characteristics of Adequate Breathing:

• Normal rate and depth • Equal rise and fall of chest

• Regular breathing pattern • Pink, warm, dry skin

• Good breath sounds on both sides of the chest

• Causes of Inadequate Breathing:

• Pulmonary vessels become obstructed. • Blood flow to the lungs is obstructed.

• Alveoli are damaged. • Pleural space is filled.

• Air passages are obstructed.

• Signs of Inadequate Breathing:

• Slower than 12 breaths/min or faster than • Pale or cyanotic skin 20 breaths/min • Cool, damp (clammy) skin • Unequal chest expansion • Shallow or irregular respirations • Decreased breath sounds • Pursed lips • Muscle retractions • Nasal flaring

• Dyspnea:

• Shortness of breath or difficulty breathing

• Patient may not be alert enough to complain of shortness of breath.

• Upper or Lower Airway Infection:

• Infectious diseases may affect all parts of the airway.

• The problem is some form of obstruction to the air flow or the exchange of gases.

• Upper or Lower Airway Infection (treatment):

• Administer warm, humidified oxygen. • Do not attempt to suction the airway or insert an oropharyngeal airway in a patient with suspected epiglottitis.

• Transport patient in position of comfort.

• Acute Pulmonary Edema:

• Fluid build-up in the lungs

• Signs and symptoms

• Dyspnea

• Frothy pink sputum

• History of chronic congestive heart failure

• Recurrence high

• Acute Pulmonary Edema (treatment):

• Administer 100% oxygen.

• Suction secretions.

• Transport in position of comfort.

• Chronic Obstructive Pulmonary Disease (COPD):

• COPD is the result of direct lung and airway damage from repeated infections or inhalation of toxic agents.

• Bronchitis and emphysema are two common types of COPD.

• Abnormal breath sounds may be present.

• Rhonchi and wheezes

• COPD Patients:

• COPD patients cannot handle pulmonary infections well

• Usually age 50 or older

• History of recurring lung problems • Long-term smokers

• Tightness in chest/constant fatigue

• Chronic Obstructive Pulmonary Disease(treatment):

• Assist with prescribed inhaler if patient has one.

• Transport promptly in position of comfort.

• Asthma:

• Common but serious disease

• Asthma is an acute spasm of the bronchioles.

• Wheezing may be audible without a stethoscope.

• Asthma (treatment):

• Obtain history.

• Assess vital signs.

• Assist with inhaler if patient has one.

• Administer oxygen.

• Transport promptly.

• Spontaneous Pneumothorax:

• Accumulation of air in the pleural space

• Caused by trauma or some medical conditions

• Dyspnea and sharp chest pain on one side

• Absent or decreased breath sounds on one side

• • Spontaneous Pneumothorax (treatment):

• Transport in position of comfort.

• Monitor closely.

• Anaphylactic Reactions:

• An allergen can trigger an asthma attack.

• Asthma and anaphylactic (allergic) reactions can be similar.

• Hay fever is a seasonal response to allergens.

• Pleural Effusion:

• Collection of fluid outside lung

• Causes dyspnea

• Caused by irritation, infection, or cancer

• Decreased breath sounds over region of the

• chest where fluid has moved the lung away from the chest wall

• Eased if patient is sitting up

• Pleural Effusion (treatment):

• Definitive treatment is performed in a hospital.

• Administer oxygen and support measures.

• •

• Mechanical Obstruction of the Airway:

• Be prepared to treat quickly.

• Obstruction may result from the position of head, the tongue, aspiration of vomitus, or a foreign body.

• Opening the airway with the head tilt-chin lift maneuver may solve the problem.

• Obstruction of the Airway (treatment):

• Clear airway. • Administer oxygen.

• Pulmonary Embolism:

• A blood clot that breaks off and circulates through the venous system

• Dyspnea • Cyanosis

• Acute pleuritic pain • Tachypnea

• Hemoptysis • Varying degrees of hypoxia

• Pulmonary Embolism (treatment):

• Place patient in comfortable position, usually sitting.

• Assist breathing as necessary.

• Keep airway clear.

• Hyperventilation:

• Overbreathing resulting in a decrease in the level of carbon dioxide

• Anxiety • Dizziness

• Numbness • Tingling in hands and feet

• A sense of dyspnea despite rapid breathing

• Hyperventilation (treatment):

• Complete initial assessment and history of the event.

• Assume underlying problems.

• Do not have patient breathe into a paper bag. • Give oxygen.

• Reassure patient and transport.

• You are the provider:

• You and your EMT-B partner are dispatched to a 33-year-old woman with difficulty breathing.

• You arrive at the office building and an upset man identifies himself as the patient’s coworker.

• He tells you that the patient has had breathing problems before, but he’s never seen it this bad.

• He leads you to a woman who is standing with her arms outstretched on the desk with a metered-dose inhaler in hand.

• She acknowledges your presence with a nod. When you ask her what is wrong, she answers with a two- word response, “can’t breathe.”

• You hear audible wheezes.

• Scene size up:

• How significant is the person’s response to your question and why?

• What should you do next? Should you transport this patient or wait for ALS to arrive on scene?

• Initial Assessment:

• Perform initial assessment.

• Place the patient on oxygen.

• If patient is in respiratory distress, ventilate.

• Check pulse.

• Signs and Symptoms:

• Difficulty breathing • Increased heart rate • Abnormal breath sounds • Altered mental status • Irregular breathing • Difficulty speaking • Anxiety or restlessness • Cyanosis • Use of accessory • Increased or decreased • Pale conjunctivae muscles respirations • Coughing • Tripod position • Barrel chest

• You are the provider:

• You arrange to rendezvous with ALS.

• You apply high-flow oxygen and obtain the following vital signs:

– Respirations: 42 breaths/min

– Pulse oximetry: 90%

• The patient indicates that she has used the inhaler twice already.

• What can you do before you meet ALS?

• Another pulse oximetry reading reveals a reading of 72%.

• The patient is using accessory muscles to breathe.

• What do these signs indicate?

• Focused History and Physical Exam:

• Abnormal breath sounds are symptomatic of COPD

• Long history of dyspnea with sudden increase in shortness of breath

• Recent chest cold with fever

• Vital signs

– Normal blood pressure

– Rapid, occasionally irregular pulse

– Respirations rapid or very slow

• Interventions:

• Treat immediate life threats

• Possible interventions

– Oxygen via nonrebreathing mask at – Airway adjuncts 15 L/min – Positioning – Positive pressure ventilations – Respiratory medications

– Detailed Physical Exam:

• Performed only once life threats are addressed.

• May not be able to do if busy treating airway or breathing problems.

– Ongoing assessment:

• Carefully watch patients for shortness of breath.

• Reassess vital signs.

• Ask patient if treatment has made a difference.

• Check for accessory muscle use.

– Emergency Medical Care:

• Give supplemental oxygen at 10 to 15 L/min via nonrebreathing mask.

• Patients with longstanding COPD may be started on low-flow oxygen (2 L/min).

• Assist with inhaler if available.

• Consult medical control.

– Medications in MDI:

• Trade names • Generic names

– Proventil – Albuterol

– Ventolin – Metaproterenol

– Alupent – Terbutaline

– Metaprel •

– Brethine

• Prescribed Inhalers:

• Actions – Relax the muscles surrounding the bronchioles

– Enlarge the airways leading to easier passage of air

• Side effects

– Increased pulse rate

– Nervousness

– Muscle tremors

• Prior to Administration:

• Read label carefully.

• Verify it has been prescribed by a physician for this patient.

• Consult medical control.

• Make sure the medication is indicated.

• Check for contraindications.

• Contraindications for MDI:

• Patient unable to help coordinate inhalation

• Inhaler not prescribed for patient

• No permission from medical control

• Maximum dose prescribed has been taken.

• Administration of MDI:

• Obtain order from medical control or local protocol.

• Check for right medication, right patient, right route.

• Make sure the patient is alert.

• Check the expiration date.

• Check how many doses have been taken.

• Make sure inhaler is at room temperature or warmer.

• Shake inhaler.

• Stop administration of oxygen. • Ask the patient to exhale deeply and put lips around opening.

• If the inhaler has a spacer, use it.

• Have the patient depress the inhaler and inhale deeply.

• Instruct the patient to hold his or her breath.

• Continue administration of oxygen.

• Allow the patient to breathe a few times then repeat dose according to protocol.

• Reassessment:

• Carefully watch for shortness of breath.

• 5 minutes after administration:

– Obtain vital signs again.

– Perform focused reassessment.

– Transport and continue to assess breathing