II. Evaluation: Vital Sign Monitoring
- See Pediatric Asthma Score
-
Vital Signs: Temp, Pulse, Blood Pressure, Respirations
- Start with every 4 hours for 12 hours
- Space to every 6 hours
-
Peak Expiratory Flow (PEFR)
- PEFR accurate age >7 years (may be helpful age > 5)
- Obtain at least twice daily Peak Flows at one hour following Bronchodilator
-
Oxygen Saturation Monitor
- Oxygen to keep Oxygen Saturation adequate
- Adults: >93%
- Children: >95%
- Discontinuation Criteria
- Oxygen Saturation adequate for 4 hours
- Patient on general ward
- Continue spot check Oxygen Saturation
- Perform with Vital Signs
- As needed for respiratory distress
- Oxygen to keep Oxygen Saturation adequate
- Telemetry monitor (cardiac monitor) Indications
- Albuterol Nebulizer more than every 4 hours
- Infant or young child
- Corroborate Oxygen Saturation monitor (match pulse)
- Child movement makes Oxygen Saturation inaccurate
III. Management: Medications
- See Emergency Management of Asthma Exacerbation
- See Status Asthmaticus
-
Bronchodilators
- See Albuterol
- Albuterol MDI or Albuterol Nebulizer every 4 to 6 hours as needed
- Consider adding Muscarinic Antagonist (Ipratropium Bromide, duonebs)
-
Corticosteroids
- Methylprednisolone (Solu-Medrol)
- Dose: 1 mg/kg/dose q6 hours
- Maximum Dose: 60 mg IV q6 hour OR 80 mg IV q8 hours
- Oral Prednisone
- Indications to switch from Solu-Medrol
- Albuterol Nebulizer spaced to 4 hours or more
- Tolerating oral intake (No Nausea or Vomiting)
- Dose
- Prednisone 1-2 mg/kg/day qd-bid
- Maximum: 40-60 mg/day for 5-10 days
- No tapering needed if use less than 2 weeks
- Indications to switch from Solu-Medrol
- Methylprednisolone (Solu-Medrol)
IV. Evaluation: Monitoring
-
Peak Expiratory Flow (PEF) or FEV1
- Obtain one hour after Bronchodilator doses
- Target improvement of >60% of predicted (or personal best)
-
Venous Blood Gas or Arterial Blood Gas Indications (on admission)
- Pulmonary Function Test Criteria
- PEFR < 30%
- Prior history of pCO2 > 40
- Failure to improve in 4 hours of therapy
- Clinical Asthma score >7
- Pulmonary Function Test Criteria
- Indications to monitor serum Electrolytes
- Nausea or Vomiting
- Intravenous Fluids for more than 24 hours
- Beta Agonists more than every 4 hours for 24 hours
- Chest XRay Indications
V. Findings
- Signs of Improvement
- Minimal or no Wheezing
- Caution that silent lungs also occurs in Status Asthmaticus prior to respiratory arrest
- Less than 2 night awakenings for Mild Asthma symptoms
- Good activity tolerance
- Peak Expiratory Flow (PEFR) or FEV1 > 60% of predicted or baseline
- Adequate Oxygen Saturation >93 to 94% (off Supplemental Oxygen)
- Pediatric Asthma Score (PAS): 5 to 7
- Minimal or no Wheezing
- Signs of Worsening (consider ICU transfer)
- See Status Asthmaticus
- Altered Level of Consciousness (e.g. drowsiness or confusion)
- Decreased breath sounds (quiet lungs) with decreased work of breathing despite clinical worsening
- Persistent or progressive Hypoxia
- Failure to improve after first 6-12 hours of management (including Corticosteroids)
- Pediatric Asthma Score (PAS): >7 (and esp. >11)
VI. Management: Discharge
- See Asthma-Related Death Risk Factors
- Indications
- Inhaled Beta Agonist no more then every 4 hours
- Parenteral Corticosteroids switched to Oral Corticosteroids
- Adequate Oxygen Saturation >93 to 94% (on room air)
- Peak Expiratory Flow (PEFR) or FEV1 > 60% of predicted or baseline
- Pediatric Asthma Score (PAS): 5 to 7
- Asthma Education: Medication use
- Inhaled Corticosteroid by bedside
- Respiratory Therapy or nurse to instruct use bid
- Peak Flow measurement at home
- Outpatient Management
- Continue short-acting Bronchodilator as needed (or advance SMART Asthma Management Protocol)
- Assess for proper Inhaler use with spacer
- Review Asthma Action Plan
- Start or step-up controller medication
- Continue oral Corticosteroids for 3 to 5 days in children (5 to 7 days in adults)
- Follow-up
- Clinic appointment within 7-10 days
VII. References
- (1997) Management of Asthma, NIH 97-4053
- (1995) Global Strategy for Asthma, NIH 95-3659
- Dabbs (2024) Am Fam Physician 109(1): 43-50 [PubMed]
- Pollart (2011) Am Fam Physician 84(1): 40-7 [PubMed]