Approved Drug Label (PDF)
5
Warnings and Precautions
WARNINGS
Thyroid
Dysfunction in Pediatric Patients 0 to 3 Years of Age:
Thyroid
dysfunction characterized by hypothyroidism or transient thyroid suppression
has been reported after both single exposure and multiple exposures to
iodinated contrast media (ICM) in pediatric patients 0 to 3 years of age.
Younger
age, very low birth weight, prematurity, underlying medical conditions affecting
thyroid function, admission to neonatal or pediatric intensive care units,
and congenital cardiac conditions are associated with an increased risk of
hypothyroidism after ICM exposure. Pediatric patients with congenital
cardiac conditions may be at the greatest risk given that they often require
high doses of contrast during invasive cardiac procedures.
An
underactive thyroid during early life may be harmful for cognitive and
neurological development and may require thyroid hormone replacement
therapy. After exposure to ICM, individualize thyroid function monitoring
based on underlying risk factors, especially in term and preterm neonates.
PRECAUTIONS
Pediatric
Use
…
After
exposure to iodinated contrast media, individualize thyroid function monitoring
in
pediatric patients 0 to 3 years of age based on underlying risk factors,
especially in term and preterm neonates (see WARNINGS and ADVERSE
REACTIONS).
Approved Drug Label (PDF)
5
Warnings and Precautions
PRECAUTIONS
Information
for Patients
Newly added information:
7. Advise
parents/caregivers about the risk of developing thyroid dysfunction after
Conray administration. Advise parents/caregivers about when to seek medical
care for their child to monitor for thyroid dysfunction (see WARNINGS).
Pediatric
Use
Newly
added information:
Thyroid
function tests indicative of thyroid dysfunction, characterized by
hypothyroidism or transient thyroid suppression have been uncommonly reported
following iodinated contrast media administration in pediatric patients,
including term and preterm neonates; some patients were treated for
hypothyroidism. Monitor pediatric patients 0 to 3 years of age closely,
particularly those with one or more potential risk factors, for thyroid
dysfunction (see WARNINGS and ADVERSE REACTIONS).
WARNINGS
Newly added information:
Thyroid
Dysfunction in Pediatric Patients 0 to 3 Years of Age: Thyroid
dysfunction characterized by hypothyroidism or transient thyroid suppression
has been reported after both single exposure and multiple exposures to
iodinated contrast media. Among patients 0 to 3 years of age exposed to
iodinated contrast media, thyroid dysfunction has been reported in 1% to 15%
depending on the age of the patient and the dose of the iodinated contrast
agent.
Younger
age, very low birth weight, prematurity, and the presence of other conditions,
such as, admission to neonatal or pediatric intensive care units, and cardiac
conditions are associated with an increased risk. Pediatric patients with
cardiac conditions may be at the greatest risk given that they often require
high doses of contrast during invasive cardiac procedures, such as
catheterization and computed tomography (CT).
Pediatric
patients 0 to 3 years of age warrant closer monitoring because an underactive
thyroid during early life may be harmful for motor, hearing, and cognitive
development and may require transient T4 replacement therapy. Evaluate thyroid
function in all pediatric patients 0 to 3 years of age within 3 weeks following
exposure to iodinated contrast media, especially in term and preterm neonates.
If thyroid dysfunction is detected, treat and monitor thyroid function as
clinically needed.
6
Adverse Reactions
Additions
and/or revisions underlined:
Endocrine reactions: Hyperthyroidism,
hypothyroidism
Approved Drug Label (PDF)
4
Contraindications
(new section added)
Refer to PRECAUTIONS, General, concerning hypersensitivity.
Conray should not be used for myelography. Arthrography should not be performed
if infection is present in or near the joint. Percutaneous transhepatic
cholangiography is contraindicated in patients with coagulation defects and
prolonged prothrombin times. Endoscopic retrograde cholangiopancreatography is
contraindicated during an acute attack of pancreatitis or during severe
clinically evident cholangitis and in patients in whom endoscopy is prohibited.
5
Warnings and Precautions
PRECAUTIONS
General
…
General anesthesia may be indicated in the
performance of some procedures in young or uncooperative children and in
selected adult patients; however, a higher incidence of adverse reactions has
been reported in these patients. This may be attributable to the inability of
the patient to identify untoward symptoms, or to the hypotensive effect of
anesthesia, which can prolong the circulation time and increase the duration of
contact of the contrast agent.
WARNINGS
(Additions and/or revisions underlined)
…
SEVERE
ADVERSE EVENTS – INADVERTENT INTRATHECAL ADMINISTRATION:
Acute renal failure has been reported in diabetic
patients with diabetic nephropathy and in susceptible non-diabetic patients
(often elderly with pre-existing renal disease) following the
administration of iodinated
contrast agents. Therefore,
careful consideration of the potential risks should be given before
performing this radiographic procedure in these patients.
Caution should be exercised in performing contrast
medium studies in patients with endotoxemia and/or those with elevated body
temperatures.
…
Severe
Cutaneous Adverse Reactions: Severe
cutaneous adverse reactions (SCAR)may
develop from 1
hour to several
weeks after intravascular
contrast agentadministration.
These reactions include Stevens-Johnson syndrome and toxic and drug reaction
with eosinophilia and systemic symptoms (DRESS). Reaction severity may increase
and time to onset may decrease with repeat administration of contrast agent; prophylactic
medications may not prevent or mitigate severe cutaneous adverse reactions.
Avoid administering Conray to patients with a history of a severe cutaneous
adverse reaction to Conray.
6
Adverse Reactions
(addition underlined)
…
Skin and
Subcutaneous Tissue Disorders: Reactions
range from mild (e.g. rash, erythema, pruritus, urticaria and skin
discoloration) to severe: [e.g. Stevens-Johnson syndrome and toxic epidermal
necrolysis (SJS/TEN), acute generalized exanthematous pustulosis (AGEP) and
drug reaction with eosinophilia and systemic symptoms (DRESS)].
8
Use in Specific Populations
Pregnancy Category B
(subsection added)
Reproduction studies have been performed in mice,
rats, and rabbits at doses up to6.6 times the human dose and have revealed no
evidence of impaired fertility or harm to the fetus due to Conray. There are,
however, no adequate and well controlled studies in pregnant women. Because
animal reproduction studies are not always predictive of human response, this
drug should be used during pregnancy only if clearly needed.
17 PCI/PI/MG (Patient Counseling Information/Patient Information/Medication Guide)
Information for Patients
(addition underlined)
Patients receiving iodinated intravascular
contrast agents should be instructed to:
1. Inform
your physician if you are pregnant.
2. Inform your physician if you are diabetic or if
you have multiple myeloma, pheochromocytoma, homozygous sickle cell disease or
known thyroid disease.
3. Inform
your physician if you are allergic to any drugs, food or if you had any
reactions to previous injections of dyes used for x-ray procedures.
4. Inform your physician about any other medications
you are currently taking, including non-prescription drugs.
5. Consult
with your physician if, at some future date, any thyroid tests are planned. The
iodine in this agent may interfere with later thyroid tests.
6. Advise patients to inform their physician
if they develop a rash after receiving
Conray.