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Medications

Streptokinase

Last Updated on February 13, 2023

Introduction

  • Not fibrin-specific, hence less effective than fibrin-specific agent

Dose

1.5 MU diluted in 100 mL normal saline, given over 1 hour

Notes: Make sure no bubble in the solution

Contraindications

Contraindications to thrombolysis

Absolute contraindications

Risk of intracranial haemorrhage

• History of intracranial bleed

• History of ischaemic stroke within 3 months

• Known structural cerebral vascular lesion (e.g. ateriovenous malformation)

• Known intracranial neoplasm

Risk of bleeding

• Active bleeding / bleeding diathesis (excluding menses)

• Suspected aortic dissection

• Significant head trauma within 3 months

Relative contraindications

Risk of intracranial haemorrhage

• History of ischaemic stroke >3 months

• Severe uncontrolled HTN on presentation (BP >180 / 110 mmHg)

• Chronic, severe uncontrolled hypertension

Risk of bleeding

• Current use of anticoagulant in therapeutic doses (INR >2) or DOAC

Recent major surgery <3 weeks

Recent internal bleeding (GI / urinary tract haemorrhage)

• Active peptic ulcer

• Non-compressible vascular puncture

• Traumatic / prolonged CPR >10 minutes 

Others

• Pregnancy

• Prior exposure (>5 days and within 12 months of first usage) to streptokinase (if planning to use streptokinase)

High risk patients

• Large infarcts

• Anterior infarcts

• Hypotension / cardiogenic shock

• Significant arrhythmias

• Elderly

• Post-revascularization (post-CABG / post-PCI)

• Post-infarct angina

Notes

• Streptokinase should not be given again between 3 days – 12 months after initial treatment with streptokinase

• Streptokinase is antigenic; it’s is a bacterial product which promotes production of antibodies. It will be less effective in the above mentioned period body has the ability to build up an immunity to it.
Further info: WikipediaMyokinase

Q&A

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