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OMNIPAQUE
Overview
What is OMNIPAQUE?
Iohexol,N,N´ - Bis(2,3-dihydroxypropyl)-5-[N-(2,3-dihydroxypropyl)-acetamido]-2,4,6-triiodo-isophthalamide, is a nonionic, water-soluble radiographic contrast medium with a molecular weight of 821.14 (iodine content 46.36%). In aqueous solution each triiodinated molecule remains undissociated. The chemical structure is:
OMNIPAQUE is provided as a sterile, pyrogen-free, colorless to pale-yellow solution, in the following iodine concentrations: 140, 180, 240, 300, and 350 mgI/mL. OMNIPAQUE 140 contains 302 mg of iohexol equivalent to 140 mg of organic iodine per mL; OMNIPAQUE 180 contains 388 mg of iohexol equivalent to 180 mg of organic iodine per mL; OMNIPAQUE 240 contains 518 mg of iohexol equivalent to 240 mg of organic iodine per mL; OMNIPAQUE 300 contains 647 mg of iohexol equivalent to 300 mg of organic iodine per mL; and OMNIPAQUE 350 contains 755 mg of iohexol equivalent to 350 mg of organic iodine per mL. Each milliliter of iohexol solution contains 1.21 mg tromethamine and 0.1 mg edetate calcium disodium with the pH adjusted between 6.8 and 7.7 with hydrochloric acid or sodium hydroxide. All solutions are sterilized by autoclaving and contain no preservatives. Unused portions must be discarded. Iohexol solution is sensitive to light and therefore should be protected from exposure.
The available concentrations have the following physical properties:
OMNIPAQUE 140, OMNIPAQUE 180, OMNIPAQUE 240, OMNIPAQUE 300, and OMNIPAQUE 350 have osmolalities from approximately 1.1 to 3.0 times that of plasma (285 mOsm/kg water) or cerebrospinal fluid (301 mOsm/kg water) as shown in the above table and are hypertonic under conditions of use.
What does OMNIPAQUE look like?
What are the available doses of OMNIPAQUE?
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What should I talk to my health care provider before I take OMNIPAQUE?
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How should I use OMNIPAQUE?
See .
What interacts with OMNIPAQUE?
OMNIPAQUE should not be administered to patients with a known hypersensitivity to iohexol.
What are the warnings of OMNIPAQUE?
Urography should be performed with caution in patients with severely impaired renal function and patients with combined renal and hepatic disease.
What are the precautions of OMNIPAQUE?
See .
Orally administered hypertonic contrast media draw fluid into the intestines which, if severe enough, could result in hypovolemia. Likewise, in infants and young children, the occurrence of diarrhea may result in hypovolemia. Plasma fluid loss may be sufficient to cause a shock-like state which, if untreated, could be dangerous. This is especially pertinent to the elderly, cachectic patients of any age as well as infants and small children.
What are the side effects of OMNIPAQUE?
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What should I look out for while using OMNIPAQUE?
OMNIPAQUE should not be administered to patients with a known hypersensitivity to iohexol.
See .
What might happen if I take too much OMNIPAQUE?
See also .
The recommended dose of OMNIPAQUE 350 at a concentration of 350 mgI/mL for adult oral pass-thru examination of the gastrointestinal tract is 50 mL to 100 mL. In a Phase I study, 150 mL of OMNIPAQUE 350 was administered orally to 11 healthy male subjects. The incidence of diarrhea was 91% (10 of 11) and abdominal cramping was 27% (3 of 11). Despite all of these events being mild and transient the occurrences were more than double that seen at the recommended doses. It is apparent from this finding that larger volumes of hypertonic contrast media, like OMNIPAQUE, increase the osmotic load in the bowel which may result in greater fluid shifts.
How should I store and handle OMNIPAQUE?
Store at 20° to 25°C (68° to 77°F). [See USP Controlled Room Temperature.]Protect from light.Dispense in a tight, light-resistant container as defined in the USP using a child-resistant closure.PHARMACIST:Store at 20° to 25°C (68° to 77°F). [See USP Controlled Room Temperature.]Protect from light.Dispense in a tight, light-resistant container as defined in the USP using a child-resistant closure.PHARMACIST:Store at 20° to 25°C (68° to 77°F). [See USP Controlled Room Temperature.]Protect from light.Dispense in a tight, light-resistant container as defined in the USP using a child-resistant closure.PHARMACIST:Store at 20° to 25°C (68° to 77°F). [See USP Controlled Room Temperature.]Protect from light.Dispense in a tight, light-resistant container as defined in the USP using a child-resistant closure.PHARMACIST:OMNIPAQUE 240OMNIPAQUE 300OMNIPAQUE 350OMNIPAQUE 240OMNIPAQUE 300OMNIPAQUE 350OMNIPAQUE 240OMNIPAQUE 300OMNIPAQUE 350
Clinical Information
Chemical Structure
No Image foundClinical Pharmacology
For most body cavities, the injected iohexol is absorbed into the surrounding tissue and eliminated by the kidneys and bowel as previously described in . Examinations of the uterus (hysterosalpingography) and bladder (voiding cystourethrography) involve the almost immediate drainage of contrast medium from the cavity upon conclusion of the radiographic procedure.
Orally administered iohexol is very poorly absorbed from the normal gastrointestinal tract. Only 0.1 to 0.5 percent of the oral dose was excreted by the kidneys. This amount may increase in the presence of bowel perforation or bowel obstruction. Iohexol is well tolerated and readily absorbed if leakage into the peritoneal cavity occurs.
Visualization of the joint spaces, uterus, fallopian tubes, peritoneal herniations, pancreatic and bile ducts, and bladder can be accomplished by direct injection of contrast medium into the region to be studied. The use of appropriate iodine concentrations assures diagnostic density.
Orally administered OMNIPAQUE produces good visualization of the gastrointestinal tract. OMNIPAQUE is particularly useful when barium sulfate is contraindicated as in patients with suspected bowel perforation or those where aspiration of contrast medium is a possibility.
Non-Clinical Toxicology
OMNIPAQUE should not be administered to patients with a known hypersensitivity to iohexol.See .
See .
Orally administered hypertonic contrast media draw fluid into the intestines which, if severe enough, could result in hypovolemia. Likewise, in infants and young children, the occurrence of diarrhea may result in hypovolemia. Plasma fluid loss may be sufficient to cause a shock-like state which, if untreated, could be dangerous. This is especially pertinent to the elderly, cachectic patients of any age as well as infants and small children.
Reference
This information is obtained from the National Institute of Health's Standard Packaging Label drug database.
"https://dailymed.nlm.nih.gov/dailymed/"
While we update our database periodically, we cannot guarantee it is always updated to the latest version.
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