The incidence of side effects is based on data that was recorded during clinical trials, spontaneous reports described in the internal clinical documentation, published studies and included data on more than 9,000 patients, as well as clinical studies in the post-marketing period.
Classification of the incidence of side effects is defined as follows: very often (≥1 / 10),often (≥ 1/100 to <1/10), infrequently (≥ 1/1000 - <1/100), rarely (≥ 1/10000 - <1/1000), very rarely (<1/10000), with unknown frequency (which can not be estimated from the available data).
Common adverse reactions:
characteristic for all iodine containing contrast agents, as a rule, are always moderate and short-lived. Serious adverse reactions, as well as cases with a fatal outcome, are very rare. Yogexol - a drug with low osmolality and to a lesser degree causes dilation of veins, endothelial injuries, pain and complications.
From the immune system:
Rarely: hypersensitivity reactions (can occur regardless of dose and route of administration), which are usually manifested as moderate breathing disorders (dyspnea, bronchospasm, laryngospasm, laryngeal edema) or skin reactions such as rash, itching, erythema, urticaria; iodism or "iodine pig" - a reaction to the introduction of iodine-containing contrast agents, expressed in the increase and soreness of the salivary glands, up to 10 days after the test.
With unknown frequency: anaphylactic shock, angioedema, reactions may occur in the form of Stevens-Johnson syndrome or toxic epidermal necrosis.
Allergic reactions can develop immediately after the injection or a few days later.
From the nervous system:
Rarely: headache;
Rarely: dysgeusia (a transitory "metallic taste"), there may be an increase in temperature with the development of convulsive syndrome;
With unknown frequency: fainting.
From the cardiovascular system:
Rarely: arrhythmia, hemodynamic disorders, asthenia (including dysphoria, fatigue);
Rarely: arterial hypertension, vasovagal reactions may occur in the form of arterial hypotension and bradycardia, aggravation of myasthenia gravis;
Infrequently: there were "tides" of blood to the face.
Gastrointestinal disorders:
Rarely: a feeling of discomfort or pain in the abdomen, dry mouth, gastrointestinal reactions in the form of nausea, vomiting and diarrhea.
Mestno:
Often: in place of the introduction of a feeling of heat, pain;
Rarely: itching, redness.
Laboratory indicators:
All iodine-containing contrast agents distort the results of thyroid radioisotope studies (the iodine-binding capacity of the thyroid gland can be reduced for up to several weeks).
Often there is an increase in the activity of amylase in the blood serum.
On the day after the test, laboratory tests should not be carried out, since high concentrations of contrast medium in serum and urine can influence the laboratory indices of bilirubin, proteins or inorganic substances (iron, copper, calcium and phosphates). There is a temporary increase S-creatinine.
Adverse reactions associated with intravascular (intra-arterial and intravenous) administration:
Depending on the place of administration and dose, a different picture of adverse reactions to the use of intra-arterial administration of radiocontrast agents is observed. Very rarely, when injected into the coronary, cerebral or renal arteries, an arterial spasm can develop, leading to transient ischemia in the organ under examination.
In selective angiography and other studies, when the contrast preparation enters the target organ in a high concentration, abnormalities in the functions of the organ being examined can be observed.
With peripheral angiography - often there is soreness or a feeling of warmth.A transient increase in creatinine levels can often be observed in the blood serum, but it does not have clinical significance.
Rarely: perforation of the vessel; in patients from the high-risk group, severe manifestations with a fatal outcome are described;
Rarely: reduced platelets, hepatic dysfunction.
From the nervous system:
Rarely: In the form of convulsions, transient disorders of sensitivity or motor function, neurologic reactions may occur. In isolated cases, the contrast agent can penetrate the blood-brain barrier, resulting in accumulation of the drug in the cerebral cortex at CT. This phenomenon can persist throughout the day after the study, sometimes accompanied by a transient disruption of orientation in space or cortical blindness. There were tremors, drowsiness, nystagmus.
From the side of the cardiovascular system:
Rarely: arrhythmia (including bradycardia, tachycardia);
Rarely: hyperemia, severe reactions are observed in the form of rhythm disturbances, a decrease in myocardial contractility, coronary artery spasm, myocardial ischemia, respiratory arrest, cardiac arrest;
With unknown frequency: the development of thrombosis and post-venereal thrombophlebitis was observed.
From the respiratory system:
Rarely: can develop acute respiratory symptoms and signs (including dyspnea, bronchospasm, laryngospasm, noncardiogenic pulmonary edema), cough.
From the endocrine system:
With unknown frequency: possibly the development of thyrotoxicosis. Patients at risk for thyrotoxicosis should be carefully examined before using iodinated contrast medium; exacerbation of pancreatitis.
From the side of the urinary system:
Rarely: the introduction of a large dose of the drug in the renal artery can cause a decrease in kidney function, anuria, temporary proteinuria, hematuria, oliguria, the development of renal failure.
From the side of the musculoskeletal system:
With unknown frequency: single cases of arthralgia are described.
Locally:
Often: At the site of injection, fever, swelling, local soreness and radicular pain can be felt;
With unknown frequency: extravasation of the drug.
Adverse reactions associated with intrathecal injection:
Associated with intrathecal administration of radiocontrast agents, adverse reactions may be delayed and occur within a few hours or days after the examination. The frequency of occurrence of similar reactions is comparable with the frequency of complications after lumbar punctures without the introduction of a contrast agent.
From the nervous side systems:
Often: there is headache, nausea and dizziness; the reason for the appearance of such effects is in the reduction of pressure in the subarachnoid space due to leakage of the CSF through the puncture site. Some patients may experience severe headache, back pain, neck pain for several days.
Often: paresthesia and radicular pain at the puncture site, cramps and pain in the legs;
Rarely: in some cases signs of irritation of the dura mater can be manifested in the form of photophobia and meningism;
Rarely: aseptic meningitis for the administration of a contrast agent (including chemical meningitis);
With unknown frequency: transient dysfunction of the central nervous system, manifested in violations of orientation, aphasia, sensitivity disorders, impaired motor function and convulsions, confusion, dysarthria.Some of these patients may experience changes in the electroencephalogram (EEG).
From the sense organs:
With unknown frequency: cases of temporary hearing loss or deafness after myelography were noted, which may be due to a decrease in pressure of cerebrospinal fluid due to lumbar puncture; short-term loss of vision.
From the gastrointestinal tract:
Often: vomiting;
Rarely: diarrhea.
Adverse reactions with intracavitary injection:
General hypersensitivity reactions develop extremely rarely. The extravascular administration of contrast agents in rare cases can cause local pain and swelling, which usually pass without consequences. In the case of development of compression symptoms, surgical decompression is recommended.
Arthrography: often a feeling of pressure and pain may occur at the injection site.
From the side of the musculoskeletal system:
Rarely have there been cases of developing arthritis to administer the drug. There is a risk of developing infectious arthritis.
Hysterosalpingography (GHA): often - a moderate, transient pain in the lower abdomen.
Gerniography: often - locally: moderate pain after the study.
Inflammation and necrosis of tissues can rarely occur, cold and elevated limb position are recommended for medical activities. In the case of development of compression symptoms, surgical decompression is recommended.
Oral admission: often - there are disorders of the gastrointestinal tract (nausea, diarrhea); infrequently - pain in the abdomen.