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Prepare the Patient

View video: Care prior to infusion

Explain the procedure
Before infusion, explain the procedure to the patient and/or parent.

Over time, patients and their caregivers will become familiar with the weekly infusion routine. During the first visit, however, you will want to go over each step.

Duration: 01:17

Obtain vital signs and weight

Prior to infusion, you will need to obtain the patient’s vital signs, including:

  • Blood pressure
  • Pulse
  • Respiration
  • Temperature
  • Pulse oximetry (Sp02) level
  • Weight (prior to dose preparation for accurate dosing)

For dosing, convert the patient’s weight from pounds to kilograms: (X lbs / 2.2 = X kg (or X lbs x 0.4536 = X kg)

Assess respiratory status, health history

To determine whether the patient is able to undergo the infusion, do the following:

View video: Infusion precautions

  • Assess the patient’s respiratory function
  • Review recent health history
  • Note any changes in the patient’s baseline health and respiratory function
  • Be aware that fever and respiratory symptoms may mask infusion-associated reactions
  • Consider postponing infusions in patients with acute febrile or respiratory illness

Duration: 00:55

Medications recommended prior to NAGLAZYME® (galsulfase) administration

Prior to IV insertion and 30 to 60 minutes before beginning infusion, the patient should be premedicated with antihistamines (with or without antipyretics) because of the potential for infusion-associated reactions.

Sleep apnea is common in patients with MPS VI. Be aware that antihistamine pretreatment may increase the risk of apneic episodes.

Obtain IV access

It is important to make sure the vein is accessed before mixing NAGLAZYME® (galsulfase) into the saline solution.

After completing venipuncture:

  • Draw blood work if needed, and flush the line with normal saline
  • Consider using plain 0.9% Sodium Chloride Injection, USP, with no drug added as the primary line, at the rate specified by the physician
    • Keeps the vein open prior to NAGLAZYME infusion
    • Provides immediate use in case of an infusion-associated reaction

Learn more about managing pain during IV access »

Step 3: Prepare NAGLAZYME »


Life-threatening anaphylactic reactions and severe allergic reactions have been observed in some patients during NAGLAZYME infusions and up to 24 hours after infusion. If these reactions occur, immediate discontinuation of NAGLAZYME is recommended and appropriate medical treatment should be initiated, which may include resuscitation, epinephrine, administering additional antihistamines, antipyretics or corticosteroids. In patients who have experienced anaphylaxis or other severe allergic reactions during infusion with NAGLAZYME, caution should be exercised upon rechallenge; appropriately trained personnel and equipment for emergency resuscitation (including epinephrine) should be available during infusions.

As with other enzyme replacement therapies, immune-mediated reactions, including membranous glomerulonephritis have been observed. In clinical trials, nearly all patients developed antibodies as a result of treatment with NAGLAZYME; however, the analysis revealed no consistent predictive relationship between total antibody titer, neutralizing or IgE antibodies, and infusion-associated reactions, urinary glycosaminoglycan (GAG) levels, or endurance measures.

Caution should be exercised when administering NAGLAZYME to patients susceptible to fluid volume overload because congestive heart failure may result. Consider a decreased total infusion volume and infusion rate when administering NAGLAZYME to these patients.

Consideration to delay NAGLAZYME infusion should be given when treating patients who present with an acute febrile or respiratory illness. Sleep apnea is common in MPS VI patients and antihistamine pretreatment may increase the risk of apneic episodes. Evaluation of airway patency should be considered prior to the initiation of treatment. Patients using supplemental oxygen or continuous positive airway pressure (CPAP) during sleep should have these treatments readily available during infusion in the event of an infusion reaction, or extreme drowsiness/sleep induced by antihistamine use.

Pretreatment with antihistamines with or without antipyretics is recommended prior to the start of infusion to reduce the risk of infusion reactions. If infusion reactions occur, decreasing the infusion rate, temporarily stopping the infusion, or administering additional antihistamines and/or antipyretics is recommended.

During infusion, serious adverse reactions included laryngeal edema, apnea, pyrexia, urticaria, respiratory distress, angioedema, and anaphylactoid reaction; severe adverse reactions included urticaria, chest pain, rash, abdominal pain, dyspnea, apnea, laryngeal edema, and conjunctivitis. The most common adverse events (≥10%) observed in clinical trials in patients treated with NAGLAZYME were rash, pain, urticaria, pyrexia, pruritus, chills, headache, nausea, vomiting, abdominal pain and dyspnea. The most common adverse reactions requiring interventions are infusion-related reactions.

Spinal/cervical cord compression is a known and serious complication that is expected to occur during the natural course of MPS VI. Signs and symptoms of spinal/cervical cord compression include back pain, paralysis of limbs below the level of compression, and urinary or fecal incontinence. Patients should be evaluated for spinal/cervical cord compression prior to initiation of NAGLAZYME to establish a baseline and risk profile. Patients treated with NAGLAZYME should be regularly monitored for the development or progression of spinal/cervical cord compression and be given appropriate clinical care.

To report SUSPECTED ADVERSE REACTIONS, contact BioMarin Pharmaceutical Inc. at 1-888-906-6100, or FDA at 1-800-FDA-1088 or

Please see full Prescribing Information.

NAGLAZYME® (galsulfase) is indicated for patients with mucopolysaccharidosis VI (MPS VI; Maroteaux-Lamy syndrome). NAGLAZYME has been shown to improve walking and stair-climbing capacity.