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Helium and oxygen gas mixtures, commonly referred to as heliox, carry medications deeper and faster into the lungs when compared to oxygen or room air. This important property allows medication to get into the lungs quickly for patients with severe asthma attacks.

Emergency Department Asthma Pathway Incorporating Heliox Driven Albuterol Nebulization

12/18/2012 15:35

Children’s Hospital Emergency Department Asthma Pathway Guidelines

Clinical Asthma Score (1): for patients 1 year old and greater

 

Score

Wheezing

Air entry

Accesssory Muscle Use

RR 1-5 yr

RR 6-12 yr

RR >12 yr

0 for

Clear or end expiratory

Normal

None

18- 30

16 - 24

14-20

1 for

Mild, entire expiratory

Mildly decreased

Mild subcostal

31 - 45

24 - 35

21-30

2 for

Moderate, entire expiratory or inspiratory

Moderately decreased

Moderate subcostal substernal or intercostal

46 - 60

36 - 50

31-40

3 for

Wheeze audible w/o stethoscope

Severely decreased

Severe substernal

>60

> 50

> 40

 

 

 

Assigning an asthma score using above criteria is to be conducted before AND after each intervention by the Physician, RN, or RT caring for the patient and documented on the respiratory order sheet.

Practice Guideline Considerations for patients 1 year and older: 

Mild:             Asthma score 0-3: Recommend:

  • Albuterol 4-8 puffs metered dose inhaler (MDI) with spacer (See MDI dosing on

    respiratory order sheet) or albuterol nebulization x 1

  • Consider Prednisone/Prednisolone PO 2 mg/kg (max 60 mg) or Dexamethasone

    0.6mg/kg (max 16 mg) PO x 1

 

Moderate:    Asthma score 4-7: Recommend:

  • Albuterol hour long nebulization (See dosing on respiratory order sheet) with ipratropium bromide. Reassess after nebulization and may require 2nd hour long albuterol nebulization
  • Prednisone/Prednisolone PO 2 mg/kg (max 60 mg)

 

Severe:        Asthma score 8-10: Recommend:

  • Albuterol hour long nebulization (See dosing on respiratory order sheet) with ipratropium bromide. Reassess after nebulization and likely will require 2nd hour long albuterol nebulization
  • Prednisone/Prednisolone PO 2 mg/kg (max 60 mg) or methylprednisonlone IV (same

    dose)

Consider adjunctive therapies:

  • Magnesium sulfate 50 mg/kg IV (max 2 grams) over 20 minutes (max rate 150

    mg/minute) AND/OR

  • 70% helium: 30% oxygen (Heliox) driven continuous albuterol nebulization AND/OR
  • Terbutaline SQ/IV 10 mcgm/kg loading dose (max 0.3 mg, IV over 20 minutes) followed

    by continuous IV infusion of 0.5 mcgm/kg/min. Titrate upwards every 20 minutes until

    clinical improvement noted maximum 6 mcgm.kg/min. Monitor BPs (diastolics).Optimize

    intravascular volume status with NSS IVF bolus 20 mL/kg.

  • Consider PICU admission if no improvement with the above interventions

 

Extremely Severe (Life Threatening):        Asthma score 11-12: Recommend:

  • Albuterol hour long nebulization (See dosing on respiratory order sheet) with ipratropium bromide nebulized. Reassess after nebulization and likely will require large volume albuterol nebulization for several hours.
  • Methylprednisolone IV 2 mg/kg (max 60 mg), NPO
  • Consider rapid escalation to adjunctive therapies:
  • 70% helium: 30% oxygen (Heliox) driven continuous albuterol nebulization AND/OR
  • Magnesium sulfate 50 mg/kg IV (max 2 grams) over 20 minutes (max rate 150

    mg/minute) AND/OR

  • Terbutaline SQ/IV 10 mcgm/kg loading dose (max 0.3 mg, IV over 20 minutes) followed

    by continuous IV infusion of 0.5 mcgm/kg/min. Titrate upwards every 20 minutes until

    clinical improvement noted maximum 6 mcgm.kg/min. Monitor BPs (diastolics).Optimize

    intravascular volume status with NSS IVF bolus 20 mL/kg.

  • Consider PICU admission if no improvement with the above interventions

i This clinical guideline is a collaborative care plan and is not intended to be construed or to serve as a standard of medical care. Rather, it is intended to serve as a guideline and promote coordination and communication with respect to patient care and may be modified to meet individual care needs.