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This article discusses the prevalence of asthma in New York City and the need for improved emergency medical services for asthmatic patients. It explores the benefits of expanded scope of practice for EMTs and provides guidelines for the assessment of asthmatic patients. The article also covers the triggers, signs and symptoms, and physical examination findings associated with asthma.
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Introduction • In 1996, asthma was the leading cause of hospitalizations in New York City for children (up to the age of 14 ). • In 1995, asthma hospitalizations for children of the same age group were 3 times the national average and 5 times the state average.
Introduction (cont.) • In New York City, EMTs & Paramedics treat approximately 50,000 asthmatics each year. • While these patients benefit from bronchodilator therapy, the availability of ALS response units cannot always be assured. • As a result, these patients are treated by EMTs.
Mortality from asthma is increasing worldwide From 1980 - 1987, the death rate has increased by 31% in the United States. 5,000 deaths per year.
Many studies have shown The efficacy and SAFETY of albuterol in the treatment of bronchospasm associated with asthma.
An expanded scope of practice for EMTs Could provide benefits to the population of asthmatics in New York City
May 1, 1998 - 2 new call types were implemented • ASTHMP - for patients under 15 years old • ASTHMA - for patients 15 years of age or older
Inclusion Criteria • Patients between the ages of 1 and 65 years old (with no ALS immediately available). • Patients complaining of difficulty breathing secondary to an exacerbation of their previously diagnosed asthma.
Exclusion Criteria • Patients with a history of hypersensitivity to albuterol sulfate. • Patients exhibiting signs of respiratory failure (a patient requiring ventilations).
Adult Respiratory Failure • Decreased level of consciousness • Too dyspneic to speak • Cyanosis (despite oxygen therapy) • Diminished breath sounds • Patient requires assisted ventilations
Pediatric Respiratory Failure • Ineffective respiratory effort with central cyanosis, agitation or lethargy, severe dyspnea or labored breathing, bobbing or grunting and marked intercostal & parasternal retractions.
Differential Diagnosis of Bronchospasm • COPD • Foreign body obstruction • Pulmonary Embolus • Anaphylactic reaction • Pulmonary Edema • Asthma
Pathology of Asthma • Reversible smooth muscle spasm of the airway associated with hypersensitivity of the airway to different stimuli. Primarily an inflammatory process. • Smooth muscle contractions • Mucosal edema • Mucous plugging
Triggers of Asthma Attacks • Allergies • Infection • Stress • Temperature changes • Seasonal changes
Dyspnea Wheezing Tachypnea Tachycardia Cyanosis Cough Accessory muscle use Inability to speak….. in complete… sentences. Anxiety (hypoxia) Prolonged expiratory phase Tripod positioning Nasal Flaring (infants) Signs and Symptoms
Respiratory Muscle Fatigue • Muscles are overworked to compensate for problem. • Increased work of breathing • Can lead to exhaustion and respiratory failure.
Assessment of the Asthmatic • Chief complaint • History of present illness • Past medical history
History of Present Illness • How long • Events leading up to… • How severe (Borg Scale) • Aggravating / Alleviating factors • Other complaints • Steroid use in last 24 hours (p.o. / inhaled) • Other medications
Past Medical History • Confirm asthma history • Other medical conditions (cardiac) • E.D. visits for asthma in the last 12 months • Hospital admissions for asthma in last 12 months • Previously intubated due to asthma? • Allergies to medications, etc.
Note: Do not delay treatment to solicit a patient’s medical history(except: asthma,allergies and cardiac history.)
Physical Examination • Respiratory distress vs. Respiratory failure • Posturing (tripod positioning) • Pursed lip breathing • Vital signs • Skin color, temperature and moisture • Ability to speak... in complete... sentences • Accessory muscle use
Physical Examination (cont.) • Borg Scale (0 - 10) • Peak flow • Height (you may ask patient)
Auscultation of Breath Sounds • General requirements for successful evaluation: • Patience • Effective technique • Good hearing • Knowledge of sounds
Physical Examination (cont.) • Assessing lung sounds • Rales • Rhonchi • Stridor • Wheezing
Lung Sounds Found In Common Emergency Conditions • C.O.P.D. • Diminished • Wheezes • Prolonged expiratory phase • Pneumonia • Rales (usually in one area)
Lung Sounds Found In Common Emergency Conditions • Pulmonary Edema • Diminished Sounds • Rales (usually bilateral) • Asthma • Diminished Sounds (may be on one side) • Wheezes • Prolonged expiratory phase
Wheezes • High pitched, continuous sounds • Occur on inspiration or expiration • Result of narrowed bronchioles
Wheezing Assessment • No Wheezing • Wheezing (audible with stethoscope) • Wheezing (audible without scope) • Poor air exchange (diminished lung sounds)
Absent or Diminished Sounds • Pneumothorax • Hemothorax • Obesity • Hypoventilation • Fluid or pus in pleura or lung • COPD or Asthma with poor airflow
Technique • Sit patient up • May not be possible to auscultate all areas • Place diaphragm firmly on chest wall • Avoid extraneous noise • Avoid prolonged examination of the chest
Technique • Have the patient open mouth and take deep breaths. • Avoid hyperventilation. • Listen at each location and note abnormalities.
Pharmacology: Albuterol Sulfate • Actions • Bronchodilator • Minimal side effects • Nervousness • Palpitations • Dizziness • Drowsiness • Flushing • Chest discomfort • Tachycardia • Muscle cramps • Dry mouth • Insomnia • Tremors • Weakness
Indications for Project Use • Relief of broncospasm due to exacerbation of asthma. • Use with caution for patients with: • Previous M.I. • C.H.F. You must contact • Angina Medical Control • Arrhythmias
Contraindications • Patients with known hypersensitivity to the medication or its components. • Patients in respiratory failure (those patients requiring ventilatory assistance)
Dosage • One unit dose, 3.0 cc or 0.083% Via nebulizer at 6 liters per minute or at a flow rate that will deliver the medication over 5 to 15 minutes. • Dose may be repeated if the symptoms persist for a total of 2 doses.
5 rights of Medication Administration • Right Patient • Right Drug (beware look alikes) • Right Dosage • Right Route • Right Time
Check 3 Times For: • Expiration Date • Discoloration and Clarity • Particulate matter
Administration (cont.) • Assemble nebulizer • Add medication • Attach to oxygen regulator • Set flow meter to 6 lpm • Instruct patient on use • inform adult patient • modify delivery for very young patients
Treatment of Asthma Patient • Assess breathing • Administer oxygen via non - rebreather or assist ventilations • Monitor Breathing • Do not permit physical activity • Place patient in position of comfort
Assess and Document prior to administration of albuterol • Patient is between 1 and 65 years of age • Dyspnea is secondary to previously diagnosed asthma • Vital signs • Ability to speak… in complete... sentences • Accessory muscle use • Wheezing assessment
Assess and Document prior to administration of albuterol (cont.) • Borg scale (0 - 10) • Peak flow • Contact medical control if patient has pertinent cardiac history • “The 5 rights” of medication administration