Metalyse is indicated in adults for the thrombolytic treatment of suspected myocardial infarction with
persistent ST elevation or recent left Bundle Branch Block within 6 hours after the onset of acute
myocardial infarction (AMI) symptoms.

 

Posology

 

Metalyse should be prescribed by physicians experienced in the use of thrombolytic treatment and with the facilities to monitor that use.

 

Treatment with Metalyse should be initiated as soon as possible after onset of symptoms.

 

Metalyse should be administered on the basis of body weight, with a maximum dose of 10,000 units (50 mg tenecteplase). The volume required to administer the correct dose can be calculated from the following scheme:

 

Patients’ body weight category (kg)	Tenecteplase (U)	Tenecteplase (mg)	Corresponding volume of reconstituted solution (ml)
< 60	6,000                                  30		6
≥ 60 to < 70	7,000                                  35		7
≥ 70 to < 80	8,000                                  40		8
≥ 80 to < 90	9,000                                  45		9
≥ 90	10,000                                 50		10
For details see section 6.6: Special precautions for disposal and other handling

 

Elderly (≥ 75 years)

Metalyse should be administered with caution in the elderly (_≥ 75 years) due to a higher bleeding risk (see information on bleeding in section 4.4 and on the STREAM study in section 5.1).

 

Paediatric population

The safety and efficacy of Metalyse in children (below 18 years) have not been established. No data are available.

 

Method of administration

 

The required dose should be administered as a single intravenous bolus over approximately 10 seconds.

 

A pre-existing intravenous line may be used for administration of Metalyse in sodium chloride 9 mg/ml (0.9%) solution only. Metalyse is incompatible with glucose solution.

 

No other medicinal product should be added to the injection solution.

 

For instructions on reconstitution of the medicinal product before administration, see section 6.6.

Adjunctive therapy

Antithrombotic adjunctive therapy with platelet inhibitors and anticoagulants should be administered according to the current relevant treatment guidelines for the management of patients with ST-elevation myocardial infarction.

For coronary intervention see section 4.4.

 

Unfractionated heparin and enoxaparin have been used as antithrombotic adjunctive therapy in clinical studies with Metalyse.

 

Acetylsalicylic acid should be initiated as soon as possible after symptom onset and continued with lifelong treatment unless it is contraindicated.

Metalyse must not be administered to patients with a history of an anaphylactic (i.e. life-threatening) reaction to any of the constituents (i.e. tenecteplase or any excipient) or gentamicin (a trace residue from the manufacturing process). If treatment with Metalyse is nevertheless considered to be necessary, facilities for resuscitation should be immediately available in case of need. Furthermore, Metalyse is contraindicated in the following situations because thrombolytic therapy is associated with a higher risk of bleeding: 16 - Significant bleeding disorder either at present or within the past 6 months - Patients receiving effective oral anticoagulant treatment, e.g. warfarin sodium (INR > 1.3) (see section 4.4, subsection “Bleeding”) - Any history of central nervous system damage (i.e. neoplasm, aneurysm, intracranial or spinal surgery) - Known haemorrhagic diathesis - Severe uncontrolled hypertension - Major surgery, biopsy of a parenchymal organ, or significant trauma within the past 2 months(this includes any trauma associated with the current AMI) - Recent trauma to the head or cranium - Prolonged cardiopulmonary resuscitation (> 2 minutes) within the past 2 weeks - Acute pericarditis and/or subacute bacterial endocarditis - Acute pancreatitis - Severe hepatic dysfunction, including hepatic failure, cirrhosis, portal hypertension (oesophageal varices) and active hepatitis - Active peptic ulceration - Arterial aneurysm and known arterial/venous malformation - Neoplasm with increased bleeding risk - Any known history of haemorrhagic stroke or stroke of unknown origin - Known history of ischaemic stroke or transient ischaemic attack in the preceding 6 months

Coronary intervention
If primary percutaneous coronary intervention (PCI) is scheduled according to the current relevant
treatment guidelines, tenecteplase (see section 5.1 ASSENT-4 study) should not be given.
Patients who cannot undergo primary PCI within one hour as recommended by guidelines and receive
tenecteplase as primary coronary recanalization treatment should be transferred without delay to a
coronary intervention capable facility for angiography and timely adjunctive coronary intervention
within 6-24 hours or earlier if medically indicated (see section 5.1 STREAM study).
Bleeding
The most common complication encountered during tenecteplase therapy is bleeding. The concomitant
use of heparin anticoagulation may contribute to bleeding. As fibrin is lysed during tenecteplase
therapy, bleeding from recent puncture site may occur. Therefore, thrombolytic therapy requires careful
attention to all possible bleeding sites (including catheter insertion sites, arterial and venous
puncture sites, cutdown sites and needle puncture sites). The use of rigid catheters as well as
intramuscular injections and non-essential handling of the patient should be avoided during treatment
with tenecteplase.
Most frequently haemorrhage at the injection site, and occasionally genitourinary and gingival
bleeding were observed.
Should serious bleeding occur, in particular cerebral haemorrhage, concomitant heparin administration
should be terminated immediately. Administration of protamine should be considered if heparin has
been administered within 4 hours before the onset of bleeding. In the few patients who fail to respond
to these conservative measures, judicious use of transfusion products may be indicated. Transfusion of
cryoprecipitate, fresh frozen plasma, and platelets should be considered with clinical and laboratory
reassessment after each administration. A target fibrinogen level of 1 g/l is desirable with
cryoprecipitate infusion. Antifibrinolytic agents are available as a last alternative. In the following
conditions, the risk of tenecteplase therapy may be increased and should be weighed against the
anticipated benefits:
17
- Systolic blood pressure > 160 mm Hg
- Cerebrovascular disease
- Recent gastrointestinal or genitourinary bleeding (within the past 10 days)
- High likelihood of left heart thrombus, e.g., mitral stenosis with atrial fibrillation
- Any known recent (within the past 2 days) intramuscular injection
- Advanced age, i.e. over 75 years
- Low body weight < 60 kg
- Patients receiving oral anticoagulants: The use of Metalyse may be considered when dosing or
time since the last intake of anticoagulant treatment makes residual efficacy unlikely and if
appropriate test(s) of anticoagulant activity for the product(s) concerned show no clinically
relevant activity on the coagulation system (e.g. INR ≤ 1.3 for vitamin K antagonists or other
relevant test(s) for other oral anticoagulants are within the respective upper limit of normal).
Arrhythmias
Coronary thrombolysis may result in arrhythmias associated with reperfusion. It is recommended that
antiarrhythmic therapy for bradycardia and/or ventricular tachyarrhythmias (pacemaker, defibrillator)
is available when tenecteplase is administered.
GPIIb/IIIa antagonists
Concomitant use of GPIIb/IIIa antagonists increases bleeding risk.
Hypersensitivity/Re-administration
No sustained antibody formation to the tenecteplase molecule has been observed after treatment.
However there is no systematic experience with re-administration of tenecteplase. Caution is needed
when administering tenecteplase to persons with a known hypersensitivity (other than anaphylactic
reaction) to the active substance, to any of the excipients, or to gentamicin (a residue from the
manufacturing process). If an anaphylactoid reaction occurs, the injection should be discontinued
immediately and appropriate therapy should be initiated. In any case, tenecteplase should not be readministered
before assessment of haemostatic factors like fibrinogen, plasminogen and alpha2-
antiplasmin.
Paediatric population
Metalyse is not recommended for use in children (below 18 years) due to a lack of data on safety and
efficacy.

No formal interaction studies with tenecteplase and medicinal products commonly administered in
patients with AMI have been performed. However, the analysis of data from more than 12,000 patients
treated during phase I, II and III did not reveal any clinically relevant interactions with medicinal
products commonly used in patients with AMI and concomitantly used with tenecteplase.
Medicinal products that affect coagulation or those that alter platelet function (e.g. ticlopidine,
clopidogrel, LMWH) may increase the risk of bleeding prior to, during or after tenecteplase therapy.
Concomitant use of GPIIb/IIIa antagonists increases bleeding risk.

Pregnancy
There is a limited amount of data from the use of Metalyse in pregnant women.
Nonclinical data performed with tenecteplase have shown bleeding with secondary mortality of dams
due to the known pharmacological activity of the active substance and in a few cases abortion and
resorption of the foetus occurred (effects only have been observed with repeated dose administration).
Tenecteplase is not considered to be teratogenic (please see section 5.3).
The benefit of treatment must be evaluated against the potential risks in case of myocardial infarction
during pregnancy.
Breast-feeding
It is not known if tenecteplase is excreted in human milk. Breast-feeding should be discarded within
the first 24 hours after thrombolytic therapy.
Fertility
Clinical data as well as nonclinical studies on fertility are not available for tenecteplase (Metalyse).

Not relevant.

Summary of the safety profile

 

Haemorrhage is a very common undesirable effect associated with the use of tenecteplase. The type of haemorrhage is predominantly superficial at the injection site. Ecchymoses are observed commonly but usually do not require any specific action. Death and permanent disability are reported in patients who have experienced stroke (including intracranial bleeding) and other serious bleeding episodes.

 

Tabulated list of adverse reactions

 

Adverse reactions listed below are classified according to frequency and system organ class.

Frequency groupings are defined according to the following convention: Very common (≥1/10), Common (≥1/100 to <1/10), Uncommon (≥1/1,000 to <1/100), Rare (≥1/10,000 to <1/1,000), Very rare (<1/10,000), Not known (cannot be estimated from the available data).

 

Table 1 displays the frequency of adverse reactions.

System organ class	Adverse reaction
Immune system disorders
Rare	Anaphylactoid reaction (including rash, urticaria, bronchospasm, laryngeal oedema)
Nervous system disorders
Uncommon	Intracranial haemorrhage (such as cerebral haemorrhage, cerebral haematoma, haemorrhagic stroke, haemorrhagic transformation stroke, intracranial haematoma, subarachnoid haemorrhage) including associated symptoms as somnolence, aphasia, hemiparesis, convulsion
Eye disorders
Uncommon	Eye haemorrhage

 

Cardiac disorders
Uncommon	Reperfusion arrhythmias (such as asystole, accelerated idioventricular arrhythmia, arrhythmia, extrasystoles, atrial fibrillation, atrioventricular first degree to atrioventricular block complete, bradycardia, tachycardia, ventricular arrhythmia, ventricular fibrillation, ventricular tachycardia) occur in close temporal relationship to treatment with tenecteplase. Reperfusion arrhythmias may lead to cardiac arrest, can be life threatening and may require the use of conventional antiarrhythmic therapies.
Rare	Pericardial haemorrhage
Vascular disorders
Very common	Haemorrhage
Rare	Embolism (thrombotic embolisation)
Respiratory, thoracic and mediastinal disorders
Common	Epistaxis
Rare	Pulmonary haemorrhage
Gastrointestinal disorders
Common	Gastrointestinal haemorrhage (such as gastric haemorrhage, gastric ulcer haemorrhage, rectal haemorrhage, haematemesis, melaena, mouth haemorrhage)
Uncommon	Retroperitoneal haemorrhage (such as retroperitoneal haematoma)
Not known	Nausea, vomiting
Skin and subcutaneous tissue disorders
Common	Ecchymosis
Renal and urinary disorders
Common	Urogenital haemorrhage (such as haematuria, haemorrhage urinary tract)
General disorders and administration site conditions
Common	Injection site haemorrhage, puncture site haemorrhage
Investigations
Rare	Blood pressure decreased
Not known	Body temperature increased
Injury, poisoning and procedural complications
Not known	Fat embolism, which may lead to corresponding consequences in the organs concerned

 

As with other thrombolytic agents, the following events have been reported as sequelae of myocardial infarction and/or thrombolytic administration:

-                very common: hypotension, heart rate and rhythm disorders, angina pectoris

-                common: recurrent ischaemia, cardiac failure, myocardial infarction, cardiogenic shock, pericarditis, pulmonary oedema

-                uncommon: cardiac arrest, mitral valve incompetence, pericardial effusion, venous thrombosis, cardiac tamponade, myocardial rupture

-                rare: pulmonary embolism

These cardiovascular events can be life-threatening and may lead to death.

Reporting of suspected adverse reactions

Reporting suspected adverse reactions after authorisation of the medicinal product is important. It allows continued monitoring of the benefit/risk balance of the medicinal product. Healthcare professionals are asked to report any suspected adverse reactions via the national reporting system 

 

 

 

To report any side effect(s):

•                      Saudi Arabia:

− National Pharmacovigilance Center (NPC)

•                      Fax: +966-11-205-7662

•                      Call NPC at +966-11-2038222 - Exts: 2317-2356-2353-2354-2334-2340

•                      Toll-free: 8002490000 

•                      E-mail: npc.drug@sfda.gov.sa 

•                      Website: www.sfda.gov.sa/npc  • Other countries:

•                      Please contact the relevant competent authority.

In the event of overdose there may be an increased risk of bleeding. In case of severe prolonged
bleeding substitution therapy may be considered (plasma, platelets), see also section 4.4.

Pharmacotherapeutic group: Antithrombotic agents, enzymes; ATC code: B01A D11

Mechanism of action

Tenecteplase is a recombinant fibrin-specific plasminogen activator that is derived from native t-PA by modifications at three sites of the protein structure. It binds to the fibrin component of the thrombus (blood clot) and selectively converts thrombus-bound plasminogen to plasmin, which degrades the fibrin matrix of the thrombus. Tenecteplase has a higher fibrin specificity and greater resistance to inactivation by its endogenous inhibitor (PAI-1) compared to native t-PA.

 

Pharmacodynamic effects

 

After administration of tenecteplase dose dependent consumption of _α2-antiplasmin (the fluid-phase inhibitor of plasmin) with consequent increase in the level of systemic plasmin generation have been observed. This observation is consistent with the intended effect of plasminogen activation. In comparative studies a less than 15% reduction in fibrinogen and a less than 25% reduction in plasminogen were observed in subjects treated with the maximum dose of tenecteplase (10,000 U, corresponding to 50 mg), whereas alteplase caused an approximately 50% decrease in fibrinogen and plasminogen levels. No clinically relevant antibody formation was detected at 30 days.

 

Clinical efficacy and safety

 

Patency data from the phase I and II angiographic studies suggest that tenecteplase, administered as a single intravenous bolus, is effective in dissolving blood clots in the infarct-related artery of subjects experiencing an AMI on a dose related basis.

 

ASSENT-2

A large scale mortality trial (ASSENT-2) in approx. 17,000 patients showed that tenecteplase is therapeutically equivalent to alteplase in reducing mortality (6.2% for both treatments, at 30 days, upper limit of the 95% CI for the relative risk ratio 1.124) and that the use of tenecteplase is associated with a significantly lower incidence of non-intracranial bleedings (26.4% vs. 28.9%, p=0.0003). This translates into a significantly lower need of transfusions (4.3% vs. 5.5%, p=0.0002). Intracranial haemorrhage occurred at a rate of 0.93% vs. 0.94% for tenecteplase and alteplase, respectively.

 

Coronary patency and limited clinical outcome data showed that AMI patients have been successfully treated later than 6 hours after symptom onset.

 

ASSENT-4

The ASSENT-4 PCI study was designed to show if in 4000 patients with large myocardial infarctions pre-treatment with full dose tenecteplase and concomitant single bolus of up to 4,000 IU  unfractionated heparin administered prior to primary PCI to be performed within 60 to 180 minutes leads to better outcomes than primary PCI alone. The trial was prematurely terminated with 1667 randomised patients due to a numerically higher mortality in the facilitated PCI group receiving tenecteplase. The occurrence of the primary endpoint, a composite of death or cardiogenic shock or congestive heart failure within 90 days, was significantly higher in the group receiving the exploratory regimen of tenecteplase followed by routine immediate PCI: 18.6% (151/810) compared to 13.4% (110/819) in the PCI only group, p=0.0045. This significant difference between the groups for the primary endpoint at 90 days was already present in-hospital and at 30 days.

 

Numerically all of the components of the clinical composite endpoint were in favour of the PCI only regimen: death: 6.7% vs. 4.9% p=0.14; cardiogenic shock: 6.3% vs. 4.8% p=0.19; congestive heart failure: 12.0% vs. 9.2% p=0.06 respectively. The secondary endpoints re-infarction and repeat target vessel revascularisation were significantly increased in the group pre-treated with tenecteplase: re- infarction: 6.1% vs. 3.7% p=0.0279; repeat target vessel revascularisation: 6.6% vs. 3.4% p=0.0041. The following adverse events occurred more frequently with tenecteplase prior to PCI: intracranial haemorrhage: 1% vs. 0% p=0.0037; stroke: 1.8% vs. 0% p<0.0001; major bleeds: 5.6% vs. 4.4% p=0.3118; minor bleeds: 25.3% vs. 19.0% p= 0.0021; blood transfusions: 6.2% vs. 4.2% p=0.0873; abrupt vessel closure: 1.9% vs. 0.1% p=0.0001.

 

STREAM study

The STREAM study was designed to evaluate the efficacy and safety of a pharmaco-invasive strategy versus a strategy of standard primary PCI in patients presenting with ST elevation acute myocardial infarction within 3 hours of onset of symptoms not able to undergo primary PCI within one hour of first medical contact. The pharmaco-invasive strategy consisted of early fibrinolytic treatment with bolus tenecteplase and additional antiplatelet and anticoagulant therapy followed by angiography within 6-24 hours or rescue coronary intervention.

 

The study population consisted of 1,892 patients randomised by means of an interactive voice response system. The primary endpoint, a composite of death or cardiogenic shock or congestive heart failure  or re-infarction within 30 days, was observed in 12.4% (116/939) of the pharmaco-invasive arm  versus 14.3% (135/943) in the primary PCI arm (relative risk 0.86 (0.68-1.09)).

 

Single components of the primary composite endpoint for the pharmaco-invasive strategy versus primary PCI respectively were observed with the following frequencies:

 

	Pharmaco-invasive (n=944)	Primary PCI (n=948)	p
Composite death, shock, congestive heart failure, re-infarction	116/939 (12.4%)	135/943 (14.3%)	0.21
All-cause mortality	43/939 (4.6%)	42/946 (4.4%)	0.88
Cardiogenic shock	41/939 (4.4%)	56/944 (5.9%)	0.13
Congestive heart failure	57/939 (6.1%)	72/943 (7.6%)	0.18
Re-infarction	23/938 (2.5%)	21/944 (2.2%)	0.74
Cardiac mortality	31/939 (3.3%)	32/946 (3.4%)	0.92

 

The observed incidence of major and of minor non-ICH bleeds were similar in both groups:

 

	Pharmaco-invasive (n=944)	Primary PCI (n=948)	p
Major non-ICH bleed	61/939 (6.5%)	45/944 (4.8%)	0.11
Minor non-ICH bleed	205/939 (21.8%)	191/944 (20.2%)	0.40

 

Incidence of total strokes and intracranial haemorrhage

 

	Pharmaco-invasive (n=944)	Primary PCI (n=948)	p
Total stroke (all types)	15/939 (1.6%)	5/946 (0.5%)	0.03*
Intracranial haemorrhage	9/939 (0.96%)	2/946 (0.21%)	0.04**
Intracranial haemorrhage after protocol amendment to half dose in patients ≥ 75 years :	4/747 (0.5%)	2/758 (0.3%)	0.45

 

* the incidences in both groups are those expected in STEMI patients treated by fibrinolytics or primary PCI (as observed in previous studies).

** the incidence in the pharmaco-invasive group is as expected for fibrinolysis with tenecteplase (as observed in previous studies).

 

After the dose reduction of tenecteplase by half in patients _≥ 75 years there was no further intracranial hemorrhage (0 of 97 patients) (95% CI: 0.0-3.7) versus 8.1% (3 of 37 patients) (95% CI: 1.7-21.9) prior to dose reduction. The bounds of the confidence interval of the observed incidences prior and after dose reduction are overlapping.

 

In patients _≥ 75 years the observed incidence of the primary efficacy composite end point for the pharmaco-invasive strategy and primary PCI were as follows: before dose reduction 11/37 (29.7%) (95% CI: 15.9- 47.0) versus 10/32 (31.3%) (95% CI: 16.1-50.0), after dose reduction: 25/97 (25.8%) (95% CI: 17.4-35.7) versus 25/88 (24.8%) (95% CI: 19.3-39.0). In both groups the bounds of the confidence interval of the observed incidences prior and post dose reduction are overlapping.

 

Absorption and distribution
Tenecteplase is an intravenously administered, recombinant protein that activates plasminogen.
Following intravenous bolus administration of 30 mg tenecteplase in patients with acute myocardial
infarction, the initially estimated tenecteplase plasma concentration was 6.45 ± 3.60 μg/mL (mean ±
SD). The distribution phase represents 31% ± 22% to 69% ± 15% (mean ± SD) of the total AUC
following the administration of doses ranges from 5 to 50 mg.
Data on tissue distribution were obtained in studies with radioactively labelled tenecteplase in rats. The
main organ to which tenecteplase distributed was the liver. It is not known whether and to which
extent tenecteplase binds to plasma proteins in humans. The mean residence time (MRT) in the body is
approximately 1 h and the mean (± SD) volume of distribution at the steady-state (Vss) ranged from
6.3 ± 2 L to 15 ± 7 L.
Biotransformation
Tenecteplase is cleared from circulation by binding to specific receptors in the liver followed by
catabolism to small peptides. Binding to hepatic receptors is, however, reduced compared to native t-
PA, resulting in a prolonged half-life.
Elimination
After single intravenous bolus injection of tenecteplase in patients with acute myocardial infarction,
tenecteplase antigen exhibits biphasic elimination from plasma. There is no dose dependence of
tenecteplase clearance in the therapeutic dose range. The initial, dominant half-life is 24 ± 5.5 (mean
±SD) min, which is 5 times longer than native t-PA. The terminal half-life is 129 ± 87 min, and
plasma clearance is 119 ± 49 ml/min.
Increasing body weight resulted in a moderate increase of tenecteplase clearance, and increasing age
resulted in a slight decrease of clearance. Women exhibit in general lower clearance than men, but this
can be explained by the generally lower body weight of women.
Linearity/Non-Linearity
The dose linearity analysis based on AUC suggested that tenecteplase exhibits non-linear
pharmacokinetics in the dose range studied, i.e. 5 to 50 mg.
23
Renal and hepatic impairment
Because elimination of tenecteplase is through the liver, it is not expected that renal dysfunction will
affect its the pharmacokinetics. This is also supported by animal data. However, the effect of renal and
hepatic dysfunction on pharmacokinetics of tenecteplase in humans has not been specifically
investigated. Accordingly, there is no guidance for the adjustment to tenecteplase dose in patients with
hepatic and severe renal insufficiency.

Intravenous single dose administration in rats, rabbits and dogs resulted only in dose-dependent and
reversible alterations of the coagulation parameters with local haemorrhage at the injection site, which
was regarded as a consequence of the pharmacodynamic effect of tenecteplase. Multiple-dose toxicity
studies in rats and dogs confirmed these above-mentioned observations, but the study duration was
limited to two weeks by antibody formation to the human protein tenecteplase, which resulted in
anaphylaxis.
Safety pharmacology data in cynomolgus monkeys revealed reduction of blood pressure followed by
changes of ECG, but these occurred at exposures that were considerably higher than the clinical
exposure.
With regard to the indication and the single dose administration in humans, reproductive toxicity
testing was limited to an embryotoxicity study in rabbits, as a sensitive species. Tenecteplase induced
total litter deaths during the mid-embryonal period. When tenecteplase was given during the mid- or
late-embryonal period maternal animals showed vaginal bleeding on the day after the first dose.
Secondary mortality was observed 1-2 days later. Data on the foetal period are not available.
Mutagenicity and carcinogenicity are not expected for this class of recombinant proteins and
genotoxicity and carcinogenicity testing were not necessary.
No local irritation of the blood vessel was observed after intravenous, intra-arterial or paravenous
administration of the final formulation of tenecteplase.

Powder
L-arginine
Phosphoric acid
Polysorbate 20.
Trace residue from manufacturing process: Gentamicin
Solvent
Water for injections.

Metalyse is incompatible with glucose infusion solutions.

Shelf life as packaged for sale 3 years Reconstituted solution Chemical and physical in-use stability has been demonstrated for 24 hours at 2-8°C and 8 hours at 30°C. From a microbiological point of view, the reconstituted solution should be used immediately. If not used immediately, in-use storage times and conditions prior to use are the responsibility of the user and would normally not be longer than 24 hours at 2-8°C.

Do not store above 30°C. Keep the container in the outer carton in order to protect from light.
For storage conditions of the reconstituted medicinal product, see section 6.3.

20 ml glass vial type I, with a coated (B2-42) grey rubber stopper and a flip-off cap filled with powder for solution for injection. Each vial 50 mg tenecteplase.

10 ml plastic pre-filled syringe with 10 ml of solvent. Sterile vial adapter.

Metalyse should be reconstituted by adding the complete volume of water for injections from the pre- filled syringe to the vial containing the powder for injection.

 

1.           Ensure that the appropriate vial size is chosen according to the body weight of the patient.

 

Patients’ body weight category (kg)	Volume of reconstituted solution (ml)	Tenecteplase (U)	Tenecteplase (mg)
< 60	6	6,000	30
³ 60 to < 70	7	7,000	35
³ 70 to < 80	8	8,000	40
³ 80 to < 90	9	9,000	45
³ 90	10	10,000	50

 

2.           Check that the cap of the vial is still intact.

3.           Remove the flip-off cap from the vial.

4.           Remove the tip-cap from the syringe. Then immediately screw the pre-filled syringe on the vial adapter and penetrate the vial stopper in the middle with the spike of the vial adapter.

5.           Add the water for injections into the vial by pushing the syringe plunger down slowly to avoid foaming.

6.           Reconstitute by swirling gently.

7.           The reconstituted preparation results in a colourless to pale yellow, clear solution. Only clear solution without particles should be used.

8.           Directly before the solution will be administered, invert the vial with the syringe still attached, so that the syringe is below the vial.

9.           Transfer the appropriate volume of reconstituted solution of Metalyse into the syringe, based on the patient’s weight.

10.        Disconnect the syringe from the vial adapter.

11.        Metalyse is to be administered to the patient, intravenously in about 10 seconds. It should not be administered in a line containing glucose.

12.        Any unused solution should be discarded.

 

Alternatively the reconstitution can be performed with a needle instead of the included vial adapter.

 

Any unused medicinal product or waste material should be disposed of in accordance with local requirements.