E-Z-HD

E-Z-HD- barium sulfate powder, for suspension
E-Z-EM Canada Inc

1   INDICATIONS AND USAGE

E-Z-HD is indicated for use in double-contrast radiographic examinations of the esophagus, stomach and duodenum to help visualize the gastrointestinal (GI) tract in patients 12 years and older.

2  DOSAGE AND ADMINISTRATION

2.1 Recommended Dosage

The recommended dose of reconstituted E-Z-HD for adults and pediatric patients 12 years and olderis between 65 and 135 mL given orally (155 to 321 grams of barium sulfate, respectively). Volumes closer to 65 mL are recommended for the examination of the esophagus and volumes up to 135 mL are recommended for examination of the entire upper GI tract.

2.2 Instructions for Reconstitution

The E-Z-HD powder must be reconstituted prior to administration by a healthcare provider according to the following instructions:

  • Accurately measure 65 mL of water and add this water to the bottle containing the supplied E-Z-HD powder
  • Replace cap securely on bottle and shake vigorously for 30 seconds
  • Wait 5 minutes and re-shake bottle thoroughly. Reconstitution yields approximately 140 mL of E-Z-HD for oral suspension containing 2.38 grams of barium sulfate per mL

2.3 Administration Instructions

  • Administer the reconstituted E-Z-HD for oral suspension immediately upon reconstitution
  • To use with a straw, remove the adhesive label from top of the cap. Remove cap and use straw to push out cap liner. Replace cap
  • Discard any unused suspension
  • Advise patients to hydrate following the barium sulfate procedure

3  DOSAGE FORMS AND STRENGTHS

For oral suspension: 334 grams of barium sulfate supplied as a fine, white to lightly colored powder (98 % w/w) in a single-dose HDPE plastic bottle for reconstitution. The suspension is 238% w/v when reconstituted and should be homogeneous and white to lightly colored.

4  CONTRAINDICATIONS

E-Z-HD is contraindicated in patients:

  • Known or suspected perforation of the GI tract
  • Known obstruction of the GI tract
  • At high risk of GI perforation such as those with a recent prior GI perforation, acute GI hemorrhage or ischemia, toxic megacolon, severe ileus, post GI surgery or biopsy, acute GI injury or burn, or recent radiotherapy to the pelvis
  • At high risk of aspiration such as those with prior aspiration, tracheo-esophageal fistula, or obtundation
  • With known severe hypersensitivity to barium sulfate or any of the E-Z-HD excipients

5  WARNINGS AND PRECAUTIONS

5.1 Hypersensitivity Reactions

Barium sulfate preparations contain a number of excipients, including natural and artificial flavors and may induce serious hypersensitivity reactions. The manifestations include hypotension, bronchospasm and other respiratory impairments, dermal reactions including rashes, urticaria, and itching. A history of bronchial asthma, atopy, or a previous reaction to a contrast agent may increase the risk for hypersensitivity reactions. Emergency equipment and trained personnel should be immediately available for treatment of a hypersensitivity reaction.

5.2 Intra-abdominal Barium Leakage

The use of E-Z-HD is contraindicated in patients at high risk of perforation of the GI tract [see Contraindications (4)]. Administration of E-Z-HD may result in leakage of barium from the GI tract in the presence of conditions such as carcinomas, GI fistula, inflammatory bowel disease, gastric or duodenal ulcer, appendicitis, or diverticulitis, and in patients with a severe stenosis at any level of the GI tract, especially if it is distal to the stomach. The barium leakage has been associated with peritonitis and granuloma formation.

5.3 Delayed Gastrointestinal Transit and Obstruction

Orally administered barium sulfate may accumulate proximal to a constricting lesion of the colon, causing obstruction or impaction with development of baroliths (inspissated barium associated with feces) and may lead to abdominal pain, appendicitis, bowel obstruction, or rarely perforation. Patients with the following conditions are at higher risk for developing obstruction or baroliths: severe stenosis at any level of the GI tract, impaired GI motility, electrolyte imbalance, dehydration, on a low residue diet, taking medications that delay GI motility, constipation, pediatric patients with cystic fibrosis or Hirschsprung disease, and the elderly [see Use in Specific Populations (8.4, 8.5)]. To reduce the risk of delayed GI transit and obstruction, patients should maintain adequate hydration during and in the days following a barium sulfate procedure. Consider the administration of laxatives.

5.4 Aspiration Pneumonitis

The use of E-Z-HD is contraindicated in patients at high risk of aspiration [see Contraindications (4)]. Oral administration of barium is associated with aspiration pneumonitis, especially in patients with a history of food aspiration or with compromised swallowing mechanism. Vomiting following oral administration of barium sulfate may lead to aspiration pneumonitis. In patients at risk for aspiration, begin the procedure with a small ingested volume of E-Z-HD. Discontinue administration of E-Z-HD immediately if aspiration is suspected.

5.5 Systemic Embolization

Barium sulfate products may occasionally intravasate into the venous drainage of the large bowel and enter the circulation as a “barium embolus” leading to potentially fatal complications which include systemic and pulmonary embolism, disseminated intravascular coagulation, septicemia and prolonged severe hypotension. Although this complication is exceedingly uncommon after oral administration of a barium sulfate suspension, monitor patients for potential intravasation when administering barium sulfate.

5.6 Risk with Hereditary Fructose Intolerance

E-Z-HD contains sorbitol which may cause severe reactions if ingested by patients with hereditary fructose intolerance, such as: vomiting, hypoglycemia, jaundice, hemorrhage, hepatomegaly, hyperuricemia, and kidney failure. Before administration of E-Z-HD assess patients for a history of hereditary fructose intolerance and avoid use in these patients.

6  ADVERSE REACTIONS

The following adverse reactions have been identified from spontaneous reporting or clinical studies of barium sulfate administered orally. Because the reactions are reported voluntarily from a population of uncertain size, it is not always possible to reliably estimate their frequency or to establish a causal relationship to drug exposure

  • Nausea, vomiting, diarrhea and abdominal cramping
  • Serious adverse reactions and fatalities include aspiration pneumonitis, barium sulfate impaction, intestinal perforation with consequent peritonitis and granuloma formation, vasovagal and syncopal episodes

8  USE IN SPECIFIC POPULATIONS

8.1 Pregnancy

Risk Summary

E-Z-HD is not absorbed systemically following oral administration, and maternal use is not expected to result in fetal exposure to the drug.

8.2 Lactation

Risk Summary
E-Z-HD is not absorbed systemically by the mother following oral administration, and breastfeeding is not expected to result in exposure of the infant to E-Z-HD.

8.4 Pediatric Use

Double-contrast radiographic examinations of the esophagus, stomach and duodenum may be used in pediatric patients 12 years and older.

E-Z-HD is contraindicated in pediatric patients with tracheo-esophageal fistula. [see Contraindications (4)]. Pediatric patients with a history of asthma or food allergies may be at increased risk for development of hypersensitivity reactions [see Warnings and Precautions (5.1)]. Pediatric patients with cystic fibrosis or Hirschsprung disease should be monitored for bowel obstruction after use [see Warnings and Precautions (5.3)]

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