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HYPAQUE - CYSTO
Overview
What is HYPAQUE - CYSTO?
HYPAQUE-CYSTO, brand of diatrizoate meglumine, is a water-soluble radiopaque diagnostic medium. It is a triiodinated benzoic acid derivative. It is constituted as a radiopaque iodinated anion (diatrizoate) and a radiolucent cation (meglumine). It is a colorless, microcrystalline solid which is readily soluble in water.
HYPAQUE-CYSTO is a sterile aqueous solution containing 30 g (w/v) of the meglumine salt of diatrizoic acid per 100 mL aqueous solution. The sterile solution is clear and colorless to pale yellow. The pH is adjusted between 6.5 and 7.7 with hydrochloric acid, or diatrizoic acid, or meglumine. It does not contain an antibacterial preservative. It is relatively thermostable and may be autoclaved. Edetate calcium disodium 1:10,000 has been added as a sequestering stabilizing agent. Each 1 mL contains approximately 141 mg of organically bound iodine.
It has an osmolality of 633 mosm/kg (determined by VPO) and is hypertonic to blood.
The viscosity of the solution is 1.94 cp at 25°C and 1.42 cp at 37°C.
HYPAQUE-CYSTO is a 30 percent solution of 1-Deoxy-l (methylamino)-D-glucitol 3,5-diacetamido-2,4,6-triiodobenzoate (CHINO • CHNO) with a molecular weight of 809.13, and has the following structural formula:
What does HYPAQUE - CYSTO look like?
What are the available doses of HYPAQUE - CYSTO?
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What should I talk to my health care provider before I take HYPAQUE - CYSTO?
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How should I use HYPAQUE - CYSTO?
HYPAQUE-CYSTO is indicated for retrograde cystourethrography in adult and pediatric patients.
After the bladder is emptied, HYPAQUE-CYSTO is gently instilled without force, often beyond the first desire to micturate, but not beyond the point of urgency or mild discomfort. The volume required to fill the bladder to slightly less than capacity may vary from patient to patient.
Bladder capacity in normal adults is generally 200 mL to 300 mL, and rarely, up to 600 mL. Capacity at birth is 20 mL to 50 mL, and increases about 400 percent in the first year. In children 3 to 5 years old, bladder capacity is 150 mL to 180 mL. In children older than 8 years, it is in the low adult range.
In disease, bladder capacity in adults may vary from 50 mL in a hypertonic reflex bladder to over 1000 mL in an atonic or sensory paralytic bladder or chronic lower urinary tract obstruction.
Repeat examination may be required to detect reflux, or in function studies.
The concentration varies with technique and equipment used. HYPAQUE-CYSTO may be diluted with sterile water or 5 percent dextrose solution, as indicated in the following table. A 10 percent solution is isotonic.
Note: To achieve the following concentrations some of the contrast agent must be removed prior to dilution
Dilution and withdrawal of the contrast agent should be accomplished under aseptic conditions with sterile syringes. The solution should be inspected visually for particulate matter and discoloration prior to administration.
What interacts with HYPAQUE - CYSTO?
HYPAQUE-CYSTO has no absolute contraindication in its recommended use.
What are the warnings of HYPAQUE - CYSTO?
SEVERE ADVERSE EVENTS—INADVERTENT INTRATHECAL USE
Serious adverse reactions have been reported due to the inadvertent intrathecal administration of iodinated contrast media that are not indicated for intrathecal use. These serious adverse reactions include: death, convulsions, cerebral hemorrhage, coma, paralysis, arachnoiditis, acute renal failure, cardiac arrest, seizures,
rhabdomyolysis, hyperthermia, and brain edema. Special attention must be given to insure that this drug product is not administered intrathecally.
Ionic iodinated contrast media inhibit blood coagulation, , more than nonionic contrast media.
Nonetheless, it is prudent to avoid prolonged contact of blood with syringes containing ionic contrast media.
Serious, rarely fatal, thromboembolic events causing myocardial infarction and stroke have been reported during angiographic procedures with both ionic and nonionic contrast media. Therefore, meticulous intravascular administration technique is necessary, particularly during angiographic procedures, to minimize thromboembolic events. Numerous factors, including length of procedure, catheter and syringe material, underlying disease state and concomitant medications may contribute to the development of thromboembolic events. For these reasons, meticulous angiographic techniques are recommended including close attention to guidewire and catheter manipulation, use of manifold systems and/or three-way stopcocks, frequent catheter flushing with heparinized saline solutions and minimizing the length of the procedure. The use of plastic syringe in place of glass syringes has been reported to decrease but not eliminate the likelihood of clotting.
Serious or fatal reactions have been associated with the vascular entry of radiopaque media. It is important that a course of action be carefully planned in advance for the treatment of possible serious reactions.
What are the precautions of HYPAQUE - CYSTO?
General
Diagnostic procedures which involve the use of radiopaque diagnostic agents should be carried out under the direction of personnel with the prerequisite training and with a thorough knowledge of the particular procedure
to be performed. Appropriate facilities should be available for the management of any complication of the procedure, as well as for emergency treatment of severe reactions to the contrast agent itself. Competent personnel and emergency facilities should be available for at least 30 to 60 minutes since severe delayed reactions have occurred (See ).
The possibility of a reaction, including serious, life-threatening, fatal, anaphylatic or cardiovascular reactions should always be considered (see ). It is of utmost importance that a course of action be carefully planned in advance for immediate treatment of serious reactions, and that adequate and appropriate personnel be readily available in case of any reaction.
Before injecting a contrast medium, the patient should be questioned for a history of allergy. A positive history does not arbitrarily contraindicate the use of a contrast agent where a diagnostic procedure is considered essential, but caution should be exercised (see ).
The possibility of an idiosyncratic reaction in susceptible patients should always be considered (see ). The susceptible population includes patients with a history of a previous reaction to a contrast media, patients with a known sensitivity to iodine per se, and patients with known clinical hypersensitivity (ie, bronchial asthma, hay fever, and food allergies).
Premedication with antihistamines or corticosteroids to avoid or minimize possible allergic reactions in such patients should be considered. Recent reports indicate that such pretreatment does not prevent serious life-threatening reactions, but may reduce both their incidence and severity.
The occurrence of severe idiosyncratic reactions has prompted the use of several pretesting methods. However, pretesting cannot be relied upon to predict severe reactions and may itself be hazardous for the patient. It is suggested that a thorough medical history with emphasis on allergy and hypersensitivity, prior to the injection of any contrast media, may be more accurate than pretesting in predicting adverse reactions.
Information for Patients
Patients receiving injectable radiopaque diagnostic agents should be instructed to:
Drug/Laboratory Test Interactions
Under certain circumstances (pH, temperature, concentrations, time), diatrizoate solutions are incompatible with promethazine hydrochloride, diphenhydramine hydrochloride, brompheniramine maleate, or papaverine hydrochloride solutions.
BENADRYL, brand of diphenhydramine hydrochloride, may cause precipitation when mixed in the same syringe with HYPAQUE-CYSTO.
Although interference with these laboratory tests have not been reported following cystography absorption (from the bladder or by pyelorenal back flow), they have occurred following direct injection.
Diatrizoate salts interfere with several laboratory urine and blood tests.
Coagulation:
Platelet aggregation:
Serum calcium:
Red cell counts:
Leukocyte counts:
Urea nitrogen (BUN):
Serum creatinine:
Urine osmolarity and specific gravity. Decreased due to induced diuresis.
Urine cultures. Diatrizoate in urine cultures may inhibit bacterial growth.
Protein-bound iodine (PBI) and total serum organic iodine:
3
Carcinogenesis, Mutagenesis, Impairment of Fertility
Long-term studies in animals have not been performed in order to evaluate carcinogenic potential, mutagenesis, or whether HYPAQUE-CYSTO can affect fertility in males or females.
Pregnancy Category C
Animal reproduction studies have not been conducted with diatrizoate meglumine. It is also not known whether it can cause fetal harm when administered to a pregnant woman or can affect reproduction capacity. Therefore, diatrizoate meglumine should be given to a pregnant woman only if clearly needed.
Labor and Delivery
It is not known whether use of these contrast agents during labor or delivery has immediate or delayed adverse effects on the fetus, prolongs the duration of labor or increases the likelihood that forceps delivery or other obstetrical intervention or resuscitation of the newborn will be necessary.
Nursing Mothers
Diatrizoate salts are excreted unchanged in human milk. Because of the potential adverse reactions, although it has not been established that serious adverse reactions occur in nursing infants, caution should be exercised when these contrast media are administered to a nursing woman.
What are the side effects of HYPAQUE - CYSTO?
Not For Intravascular Use
Because inadvertent intravascular entry of HYPAQUE-CYSTO is possible during urethrocystography (bladder absorption or pyelorenal back flow), the occurrence of systemic adverse effects is possible. However, the relative incidence and severity of the following reactions refer only to experience with direct injection.
Approximately 95 percent of adverse reactions accompanying the intravascular use of diatrizoate salts are of mild to moderate severity. However, life-threatening reactions and fatalities, mostly of cardiovascular origin, have occurred.
Adverse reactions to injectable contrast media fall into two categories: chemotoxic reactions and idiosyncratic
reactions.
Chemotoxic reactions result from the physicochemical properties of the contrast media, the dose, and the speed of injection. All hemodynamic disturbances and injuries to organs or vessels perfused by the contrast medium are included in this category.
Idiosyncratic reactions include all other reactions. They occur more frequently in patients 20 to 40 years old. Idiosyncratic reactions may or may not be dependent on the amount of dose injected, the speed of injection, the mode of injection, and the radiographic procedure. Idiosyncratic reactions are subdivided into minor,
intermediate, and severe. The minor reactions are self-limited and of short duration; the severe reactions are life-threatening and treatment is urgent and mandatory.
The reported incidence of adverse reactions to contrast media in patients with a history of allergy are twice that of the general population. Patients with a history of previous reactions to a contrast medium are three times more susceptible than other patients. However, sensitivity to contrast media does not appear to increase with repeated examinations.
Most adverse reactions to injectable contrast media appear within one to three minutes after the start of injection, but delayed reactions may occur.
Adverse reactions are grouped by organ system and listed below by decreasing order of occurrence and with an approximate incidence of occurrence. Significantly more severe reactions are listed before the other reactions regardless of frequency.
What should I look out for while using HYPAQUE - CYSTO?
HYPAQUE-CYSTO has no absolute contraindication in its recommended use.
What might happen if I take too much HYPAQUE - CYSTO?
Sorry No Records found
How should I store and handle HYPAQUE - CYSTO?
Store at controlled room temperature 20° to 25°C (68° to 77°F)Rx onlyManufactured by:Yung Shin Pharmaceutical Industrial Co., Ltd.Tachia, TaichungTaiwan, ROCRevision: April 2007Store at controlled room temperature 20° to 25°C (68° to 77°F)Rx onlyManufactured by:Yung Shin Pharmaceutical Industrial Co., Ltd.Tachia, TaichungTaiwan, ROCRevision: April 2007Store at controlled room temperature 20° to 25°C (68° to 77°F)Rx onlyManufactured by:Yung Shin Pharmaceutical Industrial Co., Ltd.Tachia, TaichungTaiwan, ROCRevision: April 2007Store at controlled room temperature 20° to 25°C (68° to 77°F)Rx onlyManufactured by:Yung Shin Pharmaceutical Industrial Co., Ltd.Tachia, TaichungTaiwan, ROCRevision: April 2007Store at controlled room temperature 20° to 25°C (68° to 77°F)Rx onlyManufactured by:Yung Shin Pharmaceutical Industrial Co., Ltd.Tachia, TaichungTaiwan, ROCRevision: April 20073 mL (100 mg/mL) ampules, box of 10 (NDC 11098-526-03).
Clinical Information
Chemical Structure
No Image foundClinical Pharmacology
HYPAQUE-CYSTO which gains inadvertent intravascular entry is not metabolized but excreted unchanged in the urine, each diatrizoate molecule remaining "obligated" to its cation moiety.
Diatrizoate solutions may be excreted either through the kidneys or the liver. These two excretory pathways are not mutually exclusive, but the main route of excretion seems to be governed by the affinity of the contrast medium for serum albumin. From 0% to 10% of diatrizoate meglumine is bound to serum protein.
Diatrizoate salts are excreted unchanged predominantly through the kidneys by glomerular filtration. The amount excreted during any period of time is determined by the filtered load; ie, the product of plasma contrast media concentration and glomerular filtration rate.
The liver and small intestine provide the major alternate route of excretion for diatrizoate. In patients free of severe renal disease, the fecal recovery is less than 2 percent. In patients with severe renal impairment the
excretion of these contrast media through the gallbladder and into the small intestine sharply increases; up to 20 percent in the feces in 48 hours.
Saliva is a minor secretory pathway for injectable radiopaque diagnostic agents. In patients with normal renal function, minimal amounts of contrast media are secreted unchanged.
Non-Clinical Toxicology
HYPAQUE-CYSTO has no absolute contraindication in its recommended use.Anticoagulants (oral)
ß-adrenergic blocking agents
Digitalis glycosides
Theophylline
Diagnostic procedures which involve the use of radiopaque diagnostic agents should be carried out under the direction of personnel with the prerequisite training and with a thorough knowledge of the particular procedure to be performed. Appropriate facilities should be available for the management of any complication of the procedure, as well as for emergency treatment of severe reactions to the contrast agent itself. Competent personnel and emergency facilities should be available for at least 30 to 60 minutes since severe delayed reactions have occurred (See ).
The possibility of a reaction, including serious, life-threatening, fatal, anaphylatic or cardiovascular reactions should always be considered (see ). It is of utmost importance that a course of action be carefully planned in advance for immediate treatment of serious reactions, and that adequate and appropriate personnel be readily available in case of any reaction.
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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