Stroke IVT Window

Ready

Enter stroke times

The app will calculate IV thrombolysis windows and the next step.

Scenario

LKWT>4.5hr Wake-up

Times

Last known well

Symptom recognition

Decision / planned bolus

Sleep

Sleep start

Wake up with symptoms

Sleep midpoint Not calculated

Clinical Pathway

CT head with extensive hypodensity Disabling deficit Known/suspected LVO Immediate EVT available/appropriate

Calculated Windows

Enter times to show timeline

Next Step

Awaiting inputs

Guideline Reference

Enter times to show the matching 2026 guideline reference.

Decision support only. Confirm hemorrhage exclusion, IV thrombolysis contraindications, blood pressure, glucose, anticoagulant status, dose, deficit severity, and local stroke protocol separately.

About & Disclaimer

About

IVT Calculator

Based on

2026 Guideline for the Early Management of Patients With Acute Ischemic Stroke: A Guideline From the American Heart Association/American Stroke Association

Version

1.2 Beta

Feedback

This calculator is currently in beta. We welcome feedback, corrections, and suggestions at neurologyai.net@gmail.com.

Please do not include patient-identifiable or protected health information in your message.

Disclaimer

This calculator is a beta tool intended solely to support clinical decision-making and education. It is under active development and may contain errors, omissions, or incomplete features. It is not a substitute for independent clinical judgment, current guidelines, or institutional protocols. Clinicians are responsible for verifying all patient information, confirming the applicability and accuracy of the results, and making final treatment decisions. The developers assume no responsibility for decisions made based on the use of this calculator.