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Albumin, Microspheres (Human)  (3215)

Ingredients: Albumin, Microspheres (Human)
Indications: Echocardiography, adjunct
Pregnancy Category: B
FDA Approved: 1994- 08- 01
Classes: Plasma expanders
HCFA Jcodes: P9045, P9047
Brand Names: Albumarc - US ; Albumin-Alpine - US ; Albuminar-25 - US; Taiwan ; Albuminar-5 - US; Taiwan ; Alburx - US ; Albutein - US ; Buminate - US ; Plasbumin-20 - US ; Plasbumin-25 - US ; Plasbumin-5 - US ;
DEA schedules: (none)

DESCRIPTION

 
Note: The trade name has been used throughout this monograph for clarity.
Albunex microspheres are produced by sonication of Albumin (Human), 5% Solution. The human albumin used to manufacture Albunex is US Food and Drug Administration (FDA) licensed and is derived from plasma collected from donors who have been previously screened and tested according to the methods specified by the FDA. The human albumin solution is held at 60°C for 10 hours. The following stabilizers are added per gram of albumin: 0.08 millimole sodium acetyl tryptophanate, and 0.08 millimole sodium caprylate.
The protein in the Albunex microspheres makes up approximately 1% (w/ w) of the total protein in the liquid, and the remaining 99% (w/ w) is unchanged 5% human albumin.
Albunex is a sterile, non- pyrogenic liquid. Prior to inversion it appears as a clear amber liquid with an upper white layer containing the air- filled microspheres. Upon resuspension, the liquid is opaque (milky).
Parameters:
pH: 6.4- 7.4
Microsphere concentration: 3- 5 × 108/ ml
Microsphere diameter (mean): 3.0- 5.0 μm
Size distribution: 92.5% less than 10 μm
Maximum diameter: 32 μm
Volume per vial: 10 ml
Single unit dose. Contains no preservatives.


Storage: Store Albunex in the refrigerator (2° to 8°C). Do not freeze .

CLINICAL PHARMACOLOGY

  No human pharmacokinetic studies have been performed with Albunex. For animal pharmacology refer to the animal data section.

INDICATIONS AND USAGE

  Albunex is intended as an aid for ultrasound contrast enhancement of ventricular chambers, and improves endocardial border definition in patients with suboptimal echoes undergoing ventricular function and regional wall motion studies.

CONTRAINDICATIONS

  Albunex should not be administered to patients with known or suspected hypersensitivity to blood products.

WARNINGS

  The safety and effectiveness of Albunex have not been studied in children.
Inspect Albunex before resuspending:
DO NOT USE if lower level of product is turbid or cloudy.
DO NOT USE if white upper level of product is absent.
DO NOT USE if the container has been damaged or protective seal and/ or rubber cap have been entered.
DO NOT USE if after resuspending the Albunex, the product remains clear amber instead of changing to milky white.
DO NOT INFUSE Albunex into a patient at rates faster than 1 ml/ sec.

Aspiration of blood back into the Albunex containing syringe prior to administration is not recommended as this may promote the formation of clots.

PRECAUTIONS

 

General

  Albunex should be administered with caution to patients with confirmed or suspected severe liver disease or adult respiratory distress syndrome (ARDS). See Animal Toxicology section.
Diagnostic echocardiography procedures that involve the use of Albunex should be carried out under the direction of a licensed practitioner having a thorough knowledge of the procedure and the safe use of the product.
As in all non- contrast echocardiography studies, Albunex contrast echocardiography should be accompanied by ECG monitoring to detect and document changes in cardiac cycles and wave patterns.
Hypersensitivity reactions should be anticipated whenever protein- containing materials such as Albunex are used in humans. Epinephrine, antihistamines, and corticosteroids should be kept available for immediate treatment of the patient's symptoms.
Use an angiocatheter with a 20 Gauge or larger needle, and a three- way stopcock. The catheter should be inserted into as large a vein as possible to avoid potential under- delivery of contrast agent to the heart chambers. Avoid the use of hand or wrist veins.
Albunex administration should be followed immediately by flushing with normal saline for injection or dextrose (5%) in water. It is advisable to maintain an open (TKO) intravenous line. The safety of other intravenous solutions has not been studied when used with an intravenous Albunex injection.
Albunex may not enhance endocardial borders in echocardiographic views in which there is a poor acoustic window.
Albunex contains no bacteriostatic preservative and should not be used for more than one patient. Discard unused product.

Carcinogenesis, Mutagenesis, and Impairment of Fertility

  No long- term studies in animals have been performed to evaluate carcinogenesis, mutagenesis or impairment of fertility. An in vitro assay (Ames test) was negative for mutagenesis.

Pregnancy Category B

  Albunex may be given to a woman who may be pregnant only if the benefits to the patient outweigh the unknown risk to the fetus.
Animal reproduction studies have been performed in rats and in rabbits at doses up to 4 times the maximum cumulative dose to humans and revealed no evidence of impaired fertility or harm to the fetus due to Albunex. There are, however, no adequate and well- controlled studies in pregnant women. Because animal reproduction studies are not always predictive of human response, Albunex should be given to a woman who may be pregnant only if the benefits to that patient outweigh the unknown risks to the fetus.

Nursing Mothers

  It is not known whether Albunex is excreted in human milk. Because many administered substances are excreted in human milk, caution should be exercised when Albunex is to be administered to nursing women.

Pediatric Use

  Safety and effectiveness have not been established in children.

ADVERSE REACTIONS

  Since Albunex is sterile when coming from the manufacturer, bacterial contamination with the risk of post- infusion septicemia can only occur if the container has been damaged or following puncture of the rubber cap (see WARNINGS .)
Rare life- threatening and fatal anaphylactoid reactions have been associated with the administration of human albumin products. Infusion of 5% human albumin has been associated with nausea, flushing, rash, headache, vomiting, chills and fever.
The reported adverse effects following the use of Albunex in human clinical studies of 370 subjects have been mild to moderate, of short duration and have resolved without treatment. The most frequently reported adverse effect associated with the administration of Albunex was transient altered taste (4.3%). Other reported adverse events were post- administration headache (1.9%), dizziness (1.1%) and palpitations (1.1%). The remaining adverse events occurred in less than 1% of patients either coincidental to the injection or within 24 hours following the study.
Adverse effects greater than 1%: Transient altered taste, headache, dizziness, palpitations.
Adverse effects less than 1%: Calming sensation, chest discomfort*, depression, diarrhea, diaphoresis, dyspnea, epigastric burning, flashing lights, flushing/ warmth, hand cramping, hematoma (mild), hypoglycemia, increased thirst, injection site tingling/ soreness, IV infiltration, lightheadedness, low mid- back discomfort, malaise, fatigue, muscular/ body ache, nausea, numbness (hand/ finger), rash/ pruritus, skin eruptions, tachycardia, transient blurred vision.
*Reported in 2 patients with angina and reocclusion following PTCA.


Safe Medical Devices Act of 1990 (SMDA) Device User: As of November 28, 1991, device user facilities ( i.e., hospitals, nursing homes, ambulatory surgical facilities and outpatient treatment facilities) are required to report incidents "that reasonably suggest that a medical device has caused or contributed to a death of a patient, or serious injury or serious illness of a patient".
Report only those deaths, serious injuries or serious illnesses which occur in your facility and for which it is probable that Albunex may have caused or contributed to the event. Reports of deaths must be made to the Food and Drug Administration (FDA) and to Mallinckrodt Medical, Inc. by telephone at 800- 696- 3636. Reports of serious injury and serious illness must be made to Mallinckrodt Medical, Inc.

Please use Test Form Part I (Form FDA 3375- TEST), which is available from FDA.
Division of Surveillance Systems (HFZ- 533), Center for Devices and Radiological Health, Food and Drug Administration, 1350 Piccard Drive, Rockville, MD 20850 TEL: 301- 594- 2735

DOSAGE AND ADMINISTRATION

 
Special Handling Precautions
Allow the vials to come to room temperature before use.
Inspect all vials prior to injection.
DO NOT USE if the bottom layer appears cloudy or turbid before resuspension.
DO NOT USE if the white top layer is absent as this is indicative of destroyed microspheres and may result in poor or no echo contrast.
The Albunex vial must be inverted and gently rotated for approximately 3 minutes to completely resuspend the microspheres. Failure to suspend the microspheres in this way may result in under- delivery of microspheres and inadequate contrast. If after resuspension, Albunex appears clear amber instead of milky white, DO NOT USE.
Albunex microspheres are FRAGILE. Never shake or drop the vial. To avoid destroying the microspheres, follow these precautions after resuspension:
ALWAYS VENT THE VIAL WITH A STERILE SPIKE OR STERILE NEEDLE BEFORE SLOWLY withdrawing Albunex suspension into the injection syringe using a vent spike such as Burron Medical Inc.'s Mini- Spike Dispensing Pin (DP- 1000) or an 18 Gauge or larger gauge needle.
ALWAYS WITHDRAW OR INJECT Albunex no faster than 1 ml/ second.
Albunex must be infused at a rate NOT TO EXCEED 1 ml/ second.
The time from resuspension of the Albunex microspheres to injection must not exceed 1 minute.

Prior to administration, place a 20 G or larger angiocatheter needle in a large antecubital arm vein and attach a sterile three- way stopcock. Avoid use of hand or wrist veins. Start intravenous infusion of normal saline for injection or dextrose (5%) in water, at a "to keep open, or TKO" rate.

Left Heart Studies

  For left heart studies, the initial recommended dose is 0.08 ml/ kg. If left ventricular opacification is inadequate ( i.e., if moderate to full ventricular opacification is not visualized), a second dose up to 0.22 ml/ kg may be given. The total procedural dose should not exceed 0.30 ml/ kg. For equivalent Albunex doses in ml, see conversion chart.
Immediately after each injection, turn the stopcock to "wide open". The patient's infused arm may be raised until contrast appears in the left cardiac chambers. At such time, the patient's arm may be lowered; return the infusion rate of the Normal Saline or D5W to "TKO".

Right Heart Studies

  For right heart studies, the initial recommended dose is 2.0 ml. If the right ventricular endocardial borders cannot be well visualized due to attenuation caused by the excessive backscatter of the Albunex microspheres, continue to decrease the dose by 0.5 ml to a minimum of 0.5 ml or until endocardial border visualization is optimized. The total procedural dose should not exceed 0.30 ml/ kg.
Immediately after each injection, turn the stopcock to "wide open" until contrast is seen in the patient's right cardiac chambers. Return the infusion rate of the Normal Saline or D5W to "TKO". (See TABLE 1. )
TABLE 1    Conversion Chart For Left Heart Echocardiography
  Recommended Dose
Patient Weight 0.08 ml/ kg 0.22 ml/ kg
50 kg 110 lb 4.0 ml 11.0 ml
60 kg 132 lb 4.8 ml 13.2 ml
70 kg 154 lb 5.6 ml 15.4 ml
80 kg 176 lb 6.4 ml 17.6 ml
90 kg 198 lb 7.2 ml 19.8 ml
100 kg 220 lb 8.0 ml 22.0 ml
110 kg 242 lb 8.8 ml 24.2 ml
120 kg 264 lb 9.6 ml 26.4 ml
130 kg 286 lb 10.4 ml 28.6 ml
140 kg 308 lb 11.2 ml 30.8 ml
150 kg 330 lb 12.0 ml 33.0 ml

ANIMAL PHARMACOLOGY

  Biodistribution studies were performed in rats using radioiodinated Albunex microspheres. Albunex initially distributes in the body following intravenous injection according to blood flow. The apparent mechanism for clearance of the Albunex microspheres is from the blood into the Kupffer cells of the liver by phagocytosis. The plasma half- life (T½ ) of the radiolabeled microspheres was less than 1 minute. At 3 minutes post- injection, approximately 58% of the injected dose was measured in the liver (maximum), 14% was in the blood, 3% was in the lungs and 6% in the spleen. Lung activity was maximal at 10 minutes post- injection and did not exceed 5% of the injected dose in any of the rats tested. Blood radioactivity was nearly all bound to protein (Albunex microspheres).
At 24 hours post- injection, 75% of radioactivity had been excreted as free iodide in the urine, and 1% cumulatively in the feces. At 24 hours post- injection, 2% of the injected radioactivity was measured in blood and less than 1% remained in each of the following organs: liver, spleen, kidney, and lung.
An acute intravenous limit study was performed in rats using up to 5 ml Albunex per kg body weight or 16 times the maximum recommended cumulative dose to humans (0.3 ml/ kg) (MRCD). No signs of toxicity or abnormalities in gross anatomy or histopathology were observed.
A subacute toxicity study in monkeys demonstrated that doses up to 2.8 times the maximum recommended cumulative dose to humans administered 3 times per week for 3 weeks was not toxic in any way.
In pigs, intravenous Albunex caused pulmonary hypertension and systemic hypotension. Experimental evidence has revealed this mechanism to be the phagocytosis of Albunex microspheres by pulmonary intravascular macrophages with subsequent release of thromboxane A2, a vasoconstrictor hormone. This phenomenon is believed to be species- specific in that it has been confirmed repeatedly in pigs using as little as one- tenth the recommended dose; thromboxane metabolite levels were found to be elevated in blood in pigs but not in humans given intravenous Albunex compared to baseline levels; the adverse hemodynamic events in pigs have been blocked using cyclooxygenase pathway inhibitors; and marginated monocytic phagocytic cells have not been observed in normal human lung. 1, 2
The significance of this finding for humans is unknown. However, evidence of lung phagocytic activity has been found in patients with severe liver disease undergoing liver/ spleen scans. 3- 5 Although similar events have not been observed in humans studied in clinical trials, caution is urged in patients with severe liver disease or adult respiratory distress syndrome.
A safety study was performed in monkeys using doses up to 2.8 times the MRCD and did not produce any abnormal pulmonary hemodynamic effects, i.e., Albunex did not increase mean pulmonary arterial pressure, pulmonary arterial systolic or diastolic pressure.
Studies conducted in humans and primates showed Albunex to be non- immunogenic.

References

 

1. Gehr, P. et al. The normal lung: Ultrastructure and morphometric estimation of diffusion capacity. Respir Physiol. 32: 121- 140. 1978.

2. Zeltner T.B., et al. The postnatal development and growth of the human lung: I. Morphometry. Respir Physiol. 67: 247- 267, 1987.

3. Klingensmith, W.C. Ryerson, T.W. Lung uptake of Tc 99m sulfur colloid. J. Nucl, Med. 14: 201- 204, 1973.

4. Keyes, J.W., et al. An evaluation of lung uptake of colloid during liver imaging. J. Nucl. Med. 14: 687- 691. 1973.

5. Garty, I., et al. Tc 99m colloid lung uptake in rare case of toxoplasmosis with liver involvement. Clin Nucl Med. 9: 310- 313, 1984.

PRODUCT IDENTIFICATION

  None Available

PATIENT DRUG CONSULT HANDOUT

  Albumin, Microspheres (Human) (injection)

PRODUCT LISTING - EQUIVALENTS NOT AVAILABLE

 
solution - intravenous - 5% -
50.0 ml $18.13 Plasbumin- 5
Bayer Pharmaceutical Inc
00026068520
50.0 ml $24.75 Albuminar- 5
Aventis Behring LLC
00053767006
50.0 ml $31.25 Plasbumin- 5
Bayer Pharmaceutical Inc
00192068520
250.0 ml $61.88 Alburx
ZLB Bioplasma Inc
44206031025
250.0 ml $87.50 Plasbumin- 5
Bayer Pharmaceutical Inc
00192068525
250.0 ml $99.00 Albumin- Alpine
Alpine Biologics Inc
63546031025
250.0 ml $123.75 Albumarc
American National Red Cross
52769045025
250.0 ml $123.75 GENERIC
Baxter Healthcare/ Hyland Immuno
64193021825
250.0 ml $123.75 GENERIC
Baxter Healthcare Corporation
00944060326
250.0 ml $123.75 Albuminar- 5
Aventis Behring LLC
00053767031
250.0 ml $123.75 Albuminar- 5
Aventis Behring LLC
00053767001
250.0 ml $123.75 Albutein
Alpha Therapeutic Corporation
49669521101
250.0 ml $123.75 Plasbumin- 5
Bayer Pharmaceutical Inc
00026068525
250.0 ml x 12.0 $132.00 Buminate
Baxter Healthcare Corporation
00944049101
500.0 ml $123.75 GENERIC
Baxter Healthcare/ Hyland Immuno
64193021850
500.0 ml $123.75 Alburx
ZLB Bioplasma Inc
44206031050
500.0 ml $175.00 Plasbumin- 5
Bayer Pharmaceutical Inc
00192068527
500.0 ml $198.00 Albumin- Alpine
Alpine Biologics Inc
63546031050
500.0 ml $247.50 Albumarc
American National Red Cross
52769045050
500.0 ml $247.50 GENERIC
Baxter Healthcare Corporation
00944049202
500.0 ml $247.50 Albuminar- 5
Aventis Behring LLC
00053767002
500.0 ml $247.50 Albutein
Alpha Therapeutic Corporation
49669521102
500.0 ml $247.50 Buminate
Baxter Healthcare Corporation
00944049102
500.0 ml $247.50 Plasbumin- 5
Bayer Pharmaceutical Inc
00026068527
500.0 ml $1249.99 Albuminar- 5
Aventis Behring LLC
00053767032
1000.0 ml $360.00 Albuminar- 5
Aventis Behring LLC
00053767003
solution - intravenous - 20% -
50.0 ml $58.21 Plasbumin- 20
Bayer Pharmaceutical Inc
00026069102
50.0 ml $58.21 Plasbumin- 20
Bayer Pharmaceutical Inc
00026069120
solution - intravenous - 25% -
20.0 ml $36.00 Albutein
Alpha Therapeutic Corporation
49669521301
20.0 ml $47.52 Albuminar- 25
Aventis Behring LLC
00053768001
20.0 ml $49.50 GENERIC
Baxter Healthcare Corporation
64193022802
20.0 ml $74.25 Buminate
Baxter Healthcare Corporation
00944049001
20.0 ml $125.00 Plasbumin- 25
Bayer Pharmaceutical Inc
00026068416
50.0 ml $61.88 Alburx
ZLB Bioplasma Inc
44206025105
50.0 ml $87.50 Plasbumin- 25
Bayer Pharmaceutical Inc
00026068420
50.0 ml $99.00 Albumin- Alpine
Alpine Biologics Inc
63546025105
50.0 ml $123.75 Albumarc
American National Red Cross
52769045105
50.0 ml $123.75 GENERIC
American National Red Cross
52769025105
50.0 ml $123.75 Albuminar- 25
Aventis Behring LLC
00053768002
50.0 ml $123.75 Albuminar- 25
Aventis Behring LLC
00053768032
50.0 ml x 12.0 $123.75 Buminate
Baxter Healthcare Corporation
00944049002
50.0 ml $124.99 GENERIC
Aventis Behring LLC
14362011601
50.0 ml x 12.0 $702.47 Albutein
Alpha Therapeutic Corporation
49669521302
100.0 ml $74.41 Albuminar- 25
Aventis Behring LLC
00053768033
100.0 ml $123.75 Alburx
ZLB Bioplasma Inc
44206025110
100.0 ml $175.00 Plasbumin- 25
Bayer Pharmaceutical Inc
00026068471
100.0 ml $198.00 Albumin- Alpine
Alpine Biologics Inc
63546025110
100.0 ml $247.50 Albumarc
American National Red Cross
52769045110
100.0 ml $247.50 GENERIC
Baxter Healthcare Corporation
00944060470
100.0 ml $247.50 Albuminar- 25
Aventis Behring LLC
00053768003
100.0 ml $247.50 Albutein
Alpha Therapeutic Corporation
49669521303
100.0 ml $247.50 Buminate
Baxter Healthcare Corporation
00944049003
100.0 ml $247.80 GENERIC
American National Red Cross
52769025110

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