Wednesday, October 19, 2016

Lovenox




Generic Name: enoxaparin sodium

Dosage Form: injection
FULL PRESCRIBING INFORMATION
WARNING: SPINAL/EPIDURAL HEMATOMAS

Epidural or spinal hematomas may occur in patients who are anticoagulated with low molecular weight heparins (LMWH) or heparinoids and are receiving neuraxial anesthesia or undergoing spinal puncture. These hematomas may result in long-term or permanent paralysis. Consider these risks when scheduling patients for spinal procedures. Factors that can increase the risk of developing epidural or spinal hematomas in these patients include:


  • Use of indwelling epidural catheters

  • Concomitant use of other drugs that affect hemostasis, such as non-steroidal anti-inflammatory drugs (NSAIDs), platelet inhibitors, other anticoagulants.

  • A history of traumatic or repeated epidural or spinal punctures

  • A history of spinal deformity or spinal surgery

Monitor patients frequently for signs and symptoms of neurological impairment. If neurological compromise is noted, urgent treatment is necessary.


Consider the benefits and risks before neuraxial intervention in patients anticoagulated or to be anticoagulated for thromboprophylaxis [see Warnings and Precautions (5.1) and Drug Interactions (7)].




Indications and Usage for Lovenox



Prophylaxis of Deep Vein Thrombosis


Lovenox® is indicated for the prophylaxis of deep vein thrombosis (DVT), which may lead to pulmonary embolism (PE):


  • in patients undergoing abdominal surgery who are at risk for thromboembolic complications [see Clinical Studies (14.1)].

  • in patients undergoing hip replacement surgery, during and following hospitalization.

  • in patients undergoing knee replacement surgery.

  • in medical patients who are at risk for thromboembolic complications due to severely restricted mobility during acute illness.


Treatment of Acute Deep Vein Thrombosis


Lovenox is indicated for:


  • the inpatient treatment of acute deep vein thrombosis with or without pulmonary embolism, when administered in conjunction with warfarin sodium.

  • the outpatient treatment of acute deep vein thrombosis without pulmonary embolism when administered in conjunction with warfarin sodium.


Prophylaxis of Ischemic Complications of Unstable Angina and Non-Q-Wave Myocardial Infarction


Lovenox is indicated for the prophylaxis of ischemic complications of unstable angina and non-Q-wave myocardial infarction, when concurrently administered with aspirin.



Treatment of Acute ST-Segment Elevation Myocardial Infarction


Lovenox, when administered concurrently with aspirin, has been shown to reduce the rate of the combined endpoint of recurrent myocardial infarction or death in patients with acute ST-segment elevation myocardial infarction (STEMI) receiving thrombolysis and being managed medically or with percutaneous coronary intervention (PCI).



Lovenox Dosage and Administration


All patients should be evaluated for a bleeding disorder before administration of Lovenox, unless the medication is needed urgently. Since coagulation parameters are unsuitable for monitoring Lovenox activity, routine monitoring of coagulation parameters is not required [see Warnings and Precautions (5.9)].


For subcutaneous use, Lovenox should not be mixed with other injections or infusions. For intravenous use (i.e., for treatment of acute STEMI), Lovenox can be mixed with normal saline solution (0.9%) or 5% dextrose in water.


Lovenox is not intended for intramuscular administration.



Adult Dosage



Abdominal Surgery: In patients undergoing abdominal surgery who are at risk for thromboembolic complications, the recommended dose of Lovenox is 40 mg once a day administered by SC injection with the initial dose given 2 hours prior to surgery. The usual duration of administration is 7 to 10 days; up to 12 days administration has been administered in clinical trials.



Hip or Knee Replacement Surgery: In patients undergoing hip or knee replacement surgery, the recommended dose of Lovenox is 30 mg every 12 hours administered by SC injection. Provided that hemostasis has been established, the initial dose should be given 12 to 24 hours after surgery. For hip replacement surgery, a dose of 40 mg once a day SC, given initially 12 (±3) hours prior to surgery, may be considered. Following the initial phase of thromboprophylaxis in hip replacement surgery patients, it is recommended that continued prophylaxis with Lovenox 40 mg once a day be administered by SC injection for 3 weeks. The usual duration of administration is 7 to 10 days; up to 14 days administration has been administered in clinical trials.



Medical Patients During Acute Illness: In medical patients at risk for thromboembolic complications due to severely restricted mobility during acute illness, the recommended dose of Lovenox is 40 mg once a day administered by SC injection. The usual duration of administration is 6 to 11 days; up to 14 days of Lovenox has been administered in the controlled clinical trial.



Treatment of Deep Vein Thrombosis with or without Pulmonary Embolism: In outpatient treatment, patients with acute deep vein thrombosis without pulmonary embolism who can be treated at home, the recommended dose of Lovenox is 1 mg/kg every 12 hours administered SC. In inpatient (hospital) treatment, patients with acute deep vein thrombosis with pulmonary embolism or patients with acute deep vein thrombosis without pulmonary embolism (who are not candidates for outpatient treatment), the recommended dose of Lovenox is 1 mg/kg every 12 hours administered SC or 1.5 mg/kg once a day administered SC at the same time every day. In both outpatient and inpatient (hospital) treatments, warfarin sodium therapy should be initiated when appropriate (usually within 72 hours of Lovenox). Lovenox should be continued for a minimum of 5 days and until a therapeutic oral anticoagulant effect has been achieved (International Normalization Ratio 2.0 to 3.0). The average duration of administration is 7 days; up to 17 days of Lovenox administration has been administered in controlled clinical trials.



Unstable Angina and Non-Q-Wave Myocardial Infarction: In patients with unstable angina or non-Q-wave myocardial infarction, the recommended dose of Lovenox is 1 mg/kg administered SC every 12 hours in conjunction with oral aspirin therapy (100 to 325 mg once daily). Treatment with Lovenox should be prescribed for a minimum of 2 days and continued until clinical stabilization. The usual duration of treatment is 2 to 8 days; up to 12.5 days of Lovenox has been administered in clinical trials [see Warnings and Precautions (5.2) and Clinical Studies (14.5) ].



Treatment of Acute ST-Segment Elevation Myocardial Infarction: In patients with acute ST-segment elevation myocardial infarction, the recommended dose of Lovenox is a single IV bolus of 30 mg plus a 1 mg/kg SC dose followed by 1 mg/kg administered SC every 12 hours (maximum 100 mg for the first two doses only, followed by 1 mg/kg dosing for the remaining doses). Dosage adjustments are recommended in patients ≥75 years of age [see Dosage and Administration (2.3)]. All patients should receive aspirin as soon as they are identified as having STEMI and maintained with 75 to 325 mg once daily unless contraindicated.


When administered in conjunction with a thrombolytic (fibrin-specific or non-fibrin specific), Lovenox should be given between 15 minutes before and 30 minutes after the start of fibrinolytic therapy. In the pivotal clinical study, the Lovenox treatment duration was 8 days or until hospital discharge, whichever came first. An optimal duration of treatment is not known, but it is likely to be longer than 8 days.


For patients managed with percutaneous coronary intervention (PCI): If the last Lovenox SC administration was given less than 8 hours before balloon inflation, no additional dosing is needed. If the last Lovenox SC administration was given more than 8 hours before balloon inflation, an IV bolus of 0.3 mg/kg of Lovenox should be administered [see Warnings and Precautions (5.2)].



Renal Impairment


Although no dose adjustment is recommended in patients with moderate (creatinine clearance 30–50 mL/min) and mild (creatinine clearance 50–80 mL/min) renal impairment, all such patients should be observed carefully for signs and symptoms of bleeding.


The recommended prophylaxis and treatment dosage regimens for patients with severe renal impairment (creatinine clearance <30 mL/min) are described in Table 1 [see Use in Specific Populations (8.6) and Clinical Pharmacology (12.3)].






















Table 1
Dosage Regimens for Patients with Severe Renal Impairment

(creatinine clearance <30mL/minute)
IndicationDosage Regimen
Prophylaxis in abdominal surgery30 mg administered SC once daily
Prophylaxis in hip or knee replacement surgery30 mg administered SC once daily
Prophylaxis in medical patients during acute illness30 mg administered SC once daily
Inpatient treatment of acute deep vein thrombosis with or without pulmonary embolism, when administered in conjunction with warfarin sodium1 mg/kg administered SC once daily
Outpatient treatment of acute deep vein thrombosis without pulmonary embolism, when administered in conjunction with warfarin sodium1 mg/kg administered SC once daily
Prophylaxis of ischemic complications of unstable angina and non-Q-wave myocardial infarction, when concurrently administered with aspirin1 mg/kg administered SC once daily
Treatment of acute ST-segment elevation myocardial infarction in patients <75 years of age, when administered in conjunction with aspirin30 mg single IV bolus plus a 1 mg/kg SC dose followed by 1 mg/kg administered SC once daily.
Treatment of acute ST-segment elevation myocardial infarction in geriatric patients ≥75 years of age, when administered in conjunction with aspirin1 mg/kg administered SC once daily (no initial bolus)

Geriatric Patients with Acute ST-Segment Elevation Myocardial Infarction


For treatment of acute ST-segment elevation myocardial infarction in geriatric patients ≥75 years of age, do not use an initial IV bolus. Initiate dosing with 0.75 mg/kg SC every 12 hours (maximum 75 mg for the first two doses only, followed by 0.75 mg/kg dosing for the remaining doses) [see Use in Specific Populations (8.5) and Clinical Pharmacology (12.3)].


No dose adjustment is necessary for other indications in geriatric patients unless kidney function is impaired [see Dosage and Administration (2.2)].



Administration


Lovenox is a clear, colorless to pale yellow sterile solution, and as with other parenteral drug products, should be inspected visually for particulate matter and discoloration prior to administration.


The use of a tuberculin syringe or equivalent is recommended when using Lovenox multiple-dose vials to assure withdrawal of the appropriate volume of drug.


Lovenox must not be administered by intramuscular injection. Lovenox is intended for use under the guidance of a physician.


For subcutaneous administration, patients may self-inject only if their physicians determine that it is appropriate and with medical follow-up, as necessary. Proper training in subcutaneous injection technique (with or without the assistance of an injection device) should be provided.



Subcutaneous Injection Technique: Patients should be lying down and Lovenox administered by deep SC injection. To avoid the loss of drug when using the 30 and 40 mg prefilled syringes, do not expel the air bubble from the syringe before the injection. Administration should be alternated between the left and right anterolateral and left and right posterolateral abdominal wall. The whole length of the needle should be introduced into a skin fold held between the thumb and forefinger; the skin fold should be held throughout the injection. To minimize bruising, do not rub the injection site after completion of the injection.


Lovenox prefilled syringes and graduated prefilled syringes are for single, one-time use only and are available with a system that shields the needle after injection.


 Remove the prefilled syringe from the blister packaging by peeling at the arrow as directed on the blister. Do not remove by pulling on the plunger as this may damage the syringe.


  1. Remove the needle shield by pulling it straight off the syringe (see Figure A). If adjusting the dose is required, the dose adjustment must be done prior to injecting the prescribed dose to the patient.

    Figure A



  2. Inject using standard technique, pushing the plunger to the bottom of the syringe (see Figure B).

    Figure B



  3. Remove the syringe from the injection site keeping your finger on the plunger rod (see Figure C).

    Figure C



  4. Orient the needle away from you and others, and activate the safety system by firmly pushing the plunger rod. The protective sleeve will automatically cover the needle and an audible "click" will be heard to confirm shield activation (see Figure D).

    Figure D



  5. Immediately dispose of the syringe in the nearest sharps container (see Figure E).

    Figure E



NOTE:


  • The safety system can only be activated once the syringe has been emptied.

  • Activation of the safety system must be done only after removing the needle from the patient's skin.

  • Do not replace the needle shield after injection.

  • The safety system should not be sterilized.

Activation of the safety system may cause minimal splatter of fluid. For optimal safety activate the system while orienting it downwards away from yourself and others.



Intravenous (Bolus) Injection Technique: For intravenous injection, the multiple-dose vial should be used. Lovenox should be administered through an intravenous line. Lovenox should not be mixed or co-administered with other medications. To avoid the possible mixture of Lovenox with other drugs, the intravenous access chosen should be flushed with a sufficient amount of saline or dextrose solution prior to and following the intravenous bolus administration of Lovenox to clear the port of drug. Lovenox may be safely administered with normal saline solution (0.9%) or 5% dextrose in water.



Dosage Forms and Strengths


Lovenox is available in two concentrations:



100 mg/mL Concentration








-Prefilled Syringes30 mg/0.3 mL, 40 mg/0.4 mL
-Graduated Prefilled Syringes60 mg/0.6 mL, 80 mg/0.8 mL, 100 mg/1 mL
-Multiple-Dose Vials300 mg/3 mL

150 mg/mL Concentration




-Graduated Prefilled Syringes120 mg/0.8 mL, 150 mg/1 mL

Contraindications


  • Active major bleeding

  • Thrombocytopenia associated with a positive in vitro test for anti-platelet antibody in the presence of enoxaparin sodium

  • Known hypersensitivity to enoxaparin sodium (e.g., pruritus, urticaria, anaphylactic/anaphylactoid reactions) [see Adverse Reactions (6.2)]

  • Known hypersensitivity to heparin or pork products

  • Known hypersensitivity to benzyl alcohol (which is in only the multi-dose formulation of Lovenox) [see Warnings and Precautions (5.8)]


Warnings and Precautions



Increased Risk of Hemorrhage


Cases of epidural or spinal hematomas have been reported with the associated use of Lovenox and spinal/epidural anesthesia or spinal puncture resulting in long-term or permanent paralysis. The risk of these events is higher with the use of post-operative indwelling epidural catheters, with the concomitant use of additional drugs affecting hemostasis such as NSAIDs, with traumatic or repeated epidural or spinal puncture, or in patients with a history of spinal surgery or spinal deformity [see Boxed Warning, Adverse Reactions (6.2) and Drug Interactions (7)].


Lovenox should be used with extreme caution in conditions with increased risk of hemorrhage, such as bacterial endocarditis, congenital or acquired bleeding disorders, active ulcerative and angiodysplastic gastrointestinal disease, hemorrhagic stroke, or shortly after brain, spinal, or ophthalmological surgery, or in patients treated concomitantly with platelet inhibitors.


Major hemorrhages including retroperitoneal and intracranial bleeding have been reported. Some of these cases have been fatal.


Bleeding can occur at any site during therapy with Lovenox. An unexplained fall in hematocrit or blood pressure should lead to a search for a bleeding site.



Percutaneous Coronary Revascularization Procedures


To minimize the risk of bleeding following the vascular instrumentation during the treatment of unstable angina, non-Q-wave myocardial infarction and acute ST-segment elevation myocardial infarction, adhere precisely to the intervals recommended between Lovenox doses. It is important to achieve hemostasis at the puncture site after PCI. In case a closure device is used, the sheath can be removed immediately. If a manual compression method is used, sheath should be removed 6 hours after the last IV/SC Lovenox. If the treatment with enoxaparin sodium is to be continued, the next scheduled dose should be given no sooner than 6 to 8 hours after sheath removal. The site of the procedure should be observed for signs of bleeding or hematoma formation [see Dosage and Administration (2.1)].



Use of Lovenox with Concomitant Medical Conditions


Lovenox should be used with care in patients with a bleeding diathesis, uncontrolled arterial hypertension or a history of recent gastrointestinal ulceration, diabetic retinopathy, renal dysfunction and hemorrhage.



History of Heparin-Induced Thrombocytopenia


Lovenox should be used with extreme caution in patients with a history of heparin-induced thrombocytopenia.



Thrombocytopenia


Thrombocytopenia can occur with the administration of Lovenox.


Moderate thrombocytopenia (platelet counts between 100,000/mm3 and 50,000/mm3) occurred at a rate of 1.3% in patients given Lovenox, 1.2% in patients given heparin, and 0.7% in patients given placebo in clinical trials.


Platelet counts less than 50,000/mm3 occurred at a rate of 0.1% in patients given Lovenox, in 0.2% of patients given heparin, and 0.4% of patients given placebo in the same trials.


Thrombocytopenia of any degree should be monitored closely. If the platelet count falls below 100,000/mm3, Lovenox should be discontinued. Cases of heparin-induced thrombocytopenia with thrombosis have also been observed in clinical practice. Some of these cases were complicated by organ infarction, limb ischemia, or death [see Warnings and Precautions (5.4)].



Interchangeability with Other Heparins


Lovenox cannot be used interchangeably (unit for unit) with heparin or other low molecular weight heparins as they differ in manufacturing process, molecular weight distribution, anti-Xa and anti-IIa activities, units, and dosage. Each of these medicines has its own instructions for use.



Pregnant Women with Mechanical Prosthetic Heart Valves


The use of Lovenox for thromboprophylaxis in pregnant women with mechanical prosthetic heart valves has not been adequately studied. In a clinical study of pregnant women with mechanical prosthetic heart valves given enoxaparin (1 mg/kg twice daily) to reduce the risk of thromboembolism, 2 of 8 women developed clots resulting in blockage of the valve and leading to maternal and fetal death. Although a causal relationship has not been established these deaths may have been due to therapeutic failure or inadequate anticoagulation. No patients in the heparin/warfarin group (0 of 4 women) died. There also have been isolated postmarketing reports of valve thrombosis in pregnant women with mechanical prosthetic heart valves while receiving enoxaparin for thromboprophylaxis. Women with mechanical prosthetic heart valves may be at higher risk for thromboembolism during pregnancy, and, when pregnant, have a higher rate of fetal loss from stillbirth, spontaneous abortion and premature delivery. Therefore, frequent monitoring of peak and trough anti-Factor Xa levels, and adjusting of dosage may be needed [see Use in Specific Populations (8.6)].



Benzyl Alcohol


Lovenox multiple-dose vials contain benzyl alcohol as a preservative. The administration of medications containing benzyl alcohol as a preservative to premature neonates has been associated with a fatal "gasping syndrome". Because benzyl alcohol may cross the placenta, Lovenox multiple-dose vials, preserved with benzyl alcohol, should be used with caution in pregnant women and only if clearly needed [see Use in Specific Populations (8.1)].



Laboratory Tests


Periodic complete blood counts, including platelet count, and stool occult blood tests are recommended during the course of treatment with Lovenox. When administered at recommended prophylaxis doses, routine coagulation tests such as Prothrombin Time (PT) and Activated Partial Thromboplastin Time (aPTT) are relatively insensitive measures of Lovenox activity and, therefore, unsuitable for monitoring. Anti-Factor Xa may be used to monitor the anticoagulant effect of Lovenox in patients with significant renal impairment. If during Lovenox therapy abnormal coagulation parameters or bleeding should occur, anti-Factor Xa levels may be used to monitor the anticoagulant effects of Lovenox [see Clinical Pharmacology (12.3)].



Adverse Reactions



Clinical Trials Experience


The following serious adverse reactions are also discussed in other sections of the labeling:


  • Spinal/epidural hematoma [see Boxed Warning and Warnings and Precautions (5.1)]

  • Increased Risk of Hemorrhage [see Warnings and Precautions (5.1)]

  • Thrombocytopenia [see Warnings and Precautions (5.5)]

Because clinical studies are conducted under widely varying conditions, adverse reaction rates observed in the clinical studies of a drug cannot be directly compared to rates in the clinical studies of another drug and may not reflect the rates observed in practice.


During clinical development for the approved indications, 15,918 patients were exposed to enoxaparin sodium. These included 1,228 for prophylaxis of deep vein thrombosis following abdominal surgery in patients at risk for thromboembolic complications, 1,368 for prophylaxis of deep vein thrombosis following hip or knee replacement surgery, 711 for prophylaxis of deep vein thrombosis in medical patients with severely restricted mobility during acute illness, 1,578 for prophylaxis of ischemic complications in unstable angina and non-Q-wave myocardial infarction, 10,176 for treatment of acute ST-elevation myocardial infarction, and 857 for treatment of deep vein thrombosis with or without pulmonary embolism. Enoxaparin sodium doses in the clinical trials for prophylaxis of deep vein thrombosis following abdominal or hip or knee replacement surgery or in medical patients with severely restricted mobility during acute illness ranged from 40 mg SC once daily to 30 mg SC twice daily. In the clinical studies for prophylaxis of ischemic complications of unstable angina and non-Q-wave myocardial infarction doses were 1 mg/kg every 12 hours and in the clinical studies for treatment of acute ST-segment elevation myocardial infarction enoxaparin sodium doses were a 30 mg IV bolus followed by 1 mg/kg every 12 hours SC.



Hemorrhage


The incidence of major hemorrhagic complications during Lovenox treatment has been low.


The following rates of major bleeding events have been reported during clinical trials with Lovenox [see Tables 2 to 7].















Table 2 Major Bleeding Episodes Following Abdominal and Colorectal Surgery*
Dosing Regimen
IndicationsLovenox

40 mg q.d. SC
Heparin

5000 U q8h SC

*

Bleeding complications were considered major: (1) if the hemorrhage caused a significant clinical event, or (2) if accompanied by a hemoglobin decrease ≥ 2 g/dL or transfusion of 2 or more units of blood products. Retroperitoneal, intraocular, and intracranial hemorrhages were always considered major.

Abdominal Surgeryn = 555

23 (4%)
n = 560

16 (3%)
Colorectal Surgeryn = 673

28 (4%)
n = 674

21 (3%)



























Table 3 Major Bleeding Episodes Following Hip or Knee Replacement Surgery*
IndicationsDosing Regimen
Lovenox

40 mg q.d. SC
Lovenox

30 mg q12h SC
Heparin

15,000 U/24h SC

*

Bleeding complications were considered major: (1) if the hemorrhage caused a significant clinical event, or (2) if accompanied by a hemoglobin decrease ≥ 2 g/dL or transfusion of 2 or more units of blood products. Retroperitoneal and intracranial hemorrhages were always considered major. In the knee replacement surgery trials, intraocular hemorrhages were also considered major hemorrhages.


Lovenox 30 mg every 12 hours SC initiated 12 to 24 hours after surgery and continued for up to 14 days after surgery


Lovenox 40 mg SC once a day initiated up to 12 hours prior to surgery and continued for up to 7 days after surgery

§

Lovenox 40 mg SC once a day for up to 21 days after discharge

Hip Replacement Surgery without Extended Prophylaxisn = 786

31 (4%)
n = 541

32 (6%)
Hip Replacement Surgery with Extended Prophylaxis
Peri-operative Periodn = 288

4 (2%)
Extended Prophylaxis Period§n = 221

0 (0%)
Knee Replacement Surgery without Extended Prophylaxisn = 294

3 (1%)
n = 225

3 (1%)

NOTE: At no time point were the 40 mg once a day pre-operative and the 30 mg every 12 hours post-operative hip replacement surgery prophylactic regimens compared in clinical trials.


Injection site hematomas during the extended prophylaxis period after hip replacement surgery occurred in 9% of the Lovenox patients versus 1.8% of the placebo patients.













Table 4 Major Bleeding Episodes in Medical Patients with Severely Restricted Mobility During Acute Illness*
IndicationsDosing Regimen
Lovenox

20 mg q.d. SC
Lovenox

40 mg q.d. SC
Placebo

*

Bleeding complications were considered major: (1) if the hemorrhage caused a significant clinical event, (2) if the hemorrhage caused a decrease in hemoglobin of ≥ 2 g/dL or transfusion of 2 or more units of blood products. Retroperitoneal and intracranial hemorrhages were always considered major although none were reported during the trial.


The rates represent major bleeding on study medication up to 24 hours after last dose.

Medical Patients During Acute Illnessn = 351

1 (<1%)
n = 360

3 (<1%)
n = 362

2 (<1%)












Table 5 Major Bleeding Episodes in Deep Vein Thrombosis with or without Pulmonary Embolism Treatment *
Dosing Regimen
IndicationLovenox

1.5 mg/kg q.d. SC
Lovenox

1 mg/kg q12h SC
Heparin

aPTT Adjusted IV Therapy

*

Bleeding complications were considered major: (1) if the hemorrhage caused a significant clinical event, or (2) if accompanied by a hemoglobin decrease ≥ 2 g/dL or transfusion of 2 or more units of blood products. Retroperitoneal, intraocular, and intracranial hemorrhages were always considered major.


All patients also received warfarin sodium (dose-adjusted according to PT to achieve an INR of 2.0 to 3.0) commencing within 72 hours of Lovenox or standard heparin therapy and continuing for up to 90 days.

Treatment of DVT and PEn = 298

5 (2%)
n = 559

9 (2%)
n = 554

9 (2%)









Table 6 Major Bleeding Episodes in Unstable Angina and Non-Q-Wave Myocardial Infarction
IndicationDosing Regimen
Lovenox*

1 mg/kg q12h SC
Heparin*

aPTT Adjusted IV Therapy

*

The rates represent major bleeding on study medication up to 12 hours after dose.


Aspirin therapy was administered concurrently (100 to 325 mg per day).


Bleeding complications were considered major: (1) if the hemorrhage caused a significant clinical event, or (2) if accompanied by a hemoglobin decrease by ≥ 3 g/dL or transfusion of 2 or more units of blood products. Intraocular, retroperitoneal, and intracranial hemorrhages were always considered major.

Unstable Angina and Non-Q-Wave MI,n = 1578

17 (1%)
n = 1529

18 (1%)
















Table 7 Major Bleeding Episodes in Acute ST-Segment Elevation Myocardial Infarction
Dosing Regimen
IndicationLovenox*

Initial 30 mg IV bolus followed by 1 mg/kg q12h SC
Heparin*

aPTT Adjusted IV Therapy

*

The rates represent major bleeding (including ICH) up to 30 days


Bleedings were considered major if the hemorrhage caused a significant clinical event associated with a hemoglobin decrease by ≥ 5 g/dL. ICH were always considered major.

Acute ST-Segment Elevation Myocardial Infarctionn = 10176

n (%)
n = 10151

n (%)
- Major bleeding (including ICH) 211 (2.1)138 (1.4)
- Intracranial hemorrhages (ICH)84 (0.8)66 (0.7)

Elevations of Serum Aminotransferases


Asymptomatic increases in aspartate (AST [SGOT]) and alanine (ALT [SGPT]) aminotransferase levels greater than three times the upper limit of normal of the laboratory reference range have been reported in up to 6.1% and 5.9% of patients, respectively, during treatment with Lovenox. Similar significant increases in aminotransferase levels have also been observed in patients and healthy volunteers treated with heparin and other low molecular weight heparins. Such elevations are fully reversible and are rarely associated with increases in bilirubin.


Since aminotransferase determinations are important in the differential diagnosis of myocardial infarction, liver disease, and pulmonary emboli, elevations that might be caused by drugs like Lovenox should be interpreted with caution.



Local Reactions


Mild local irritation, pain, hematoma, ecchymosis, and erythema may follow SC injection of Lovenox.



Adverse Reactions in Patients Receiving Lovenox for Prophylaxis or Treatment of DVT, PE:


Other adverse reactions that were thought to be possibly or probably related to treatment with Lovenox, heparin, or placebo in clinical trials with patients undergoing hip or knee replacement surgery, abdominal or colorectal surgery, or treatment for DVT and that occurred at a rate of at least 2% in the Lovenox group, are provided below [see Tables 8 to 11].


























Table 8 Adverse Reactions Occurring at ≥2% Incidence in Lovenox-Treated Patients Undergoing Abdominal or Colorectal Surgery
Adverse ReactionDosing Regimen
Lovenox

40 mg q.d. SC

n = 1228

%
Heparin

5000 U q8h SC

n = 1234

%
SevereTotalSevereTotal
Hemorrhage<17<16
Anemia<13<13
Ecchymosis0303













































































Table 9 Adverse Reactions Occurring at ≥2% Incidence in Lovenox-Treated Patients Undergoing Hip or Knee Replacement Surgery
Adverse ReactionDosing Regimen
Lovenox

40 mg q.d. SC
Lovenox

30 mg q12h SC
Heparin

15,000 U/24h SC
Placebo

q12h SC
Peri-operative Period

n = 288 *

%
Extended Prophylaxis Period

n = 131

%
n = 1080

%
n = 766

%
n = 115

%
Severe TotalSevere TotalSevere TotalSevere TotalSevere Total

*

Data represent Lovenox 40 mg SC once a day initiated up to 12 hours prior to surgery in 288 hip replacement surgery patients who received Lovenox peri-operatively in an unblinded fashion in one clinical trial.


Data represent Lovenox 40 mg SC once a day given in a blinded fashion as extended prophylaxis at the end of the peri-operative period in 131 of the original 288 hip replacement surgery patients for up to 21 days in one clinical trial.

Fever0800<15<1403
Hemorrhage<11305<141403
Nausea<13<1202
Anemia0160<2<1225<17
Edema<12<1202
Peripheral edema0600

No comments:

Post a Comment