Lithuanian Vital Signs Implementation Guide, published by Lithuanian Medical Library. This guide is not an authorized publication; it is the continuous build for version 0.0.1 built by the FHIR (HL7® FHIR® Standard) CI Build. This version is based on the current content of https://github.com/HL7LT/ig-lt-vitalsigns/ and changes regularly. See the Directory of published versions

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Official URL: https://hl7.lt/fhir/vitalsigns/ImplementationGuide/lt.hl7.fhir.vitalsigns				Version: 0.0.1	Highlight text changes?
					Computable Name: LTVitalSigns

Lithuanian Vital Signs Implementation Guide

Introduction and Purpose

This Implementation Guide (IG) specifies how to consistently represent and exchange core patient physiological and anthropometric measurements using the Fast Healthcare Interoperability Resources (FHIR) standard. Accurate, structured, and machine-readable vital signs data is essential for patient assessment, emergency care, long-term monitoring, diagnosis, and secondary use across healthcare settings.

This guide supports the standardized exchange of vital signs data between clinical systems, medical devices, telemedicine solutions, and national health data infrastructures, enabling reliable interpretation by both clinicians and digital systems.

Audience

This guide is intended for implementation guide authors, system vendors, integrators, healthcare solution developers, and other stakeholders involved in exchanging vital signs data using FHIR. Readers are expected to have at least a basic familiarity with FHIR and to refer to the core FHIR specification where additional background is needed.

Scope and Key Content

This guide provides structured FHIR profiles and implementation guidance for core vital signs and associated anthropometric data, including:

• Arterial Blood Pressure (ABP): Systolic, diastolic, and mean arterial pressure represented as a panel, including relevant measurement context such as body position, measurement location, and device details.
• Heart Rate (HR): Pulse or heart rate measurements, with support for body location and measurement method where relevant.
• Anthropometric Data: Body height, body weight, and Body Mass Index (BMI), supporting growth assessment and risk evaluation related to obesity and chronic disease.
• Head Circumference: Head circumference measurements, primarily used in paediatric and growth assessment contexts.
• Waist Circumference: Waist circumference measurements used in metabolic and cardiovascular risk assessment.

Supporting artifacts also include Device profiles (for example, blood pressure monitors, scales, height-length devices, and heart rate devices), a BodyStructure profile for blood pressure measurement site, and extensions for body position, sleep status, exercise association, measurement setting, and associated situations.

Why Use This Guide?

By adopting these profiles and guidance, implementers can support a standardized approach to:

• Interoperability: Facilitate seamless, semantic exchange of vital signs data between medical devices, Electronic Health Record (EHR) systems, hospital systems, telemedicine platforms, and national health information infrastructures.
• Data Quality: Improve the consistency, completeness, and reliability of measurements through standardized structures, terminology bindings, and units of measure, reducing ambiguity and supporting accurate interpretation.
• Clinical Utility: Support safer and more effective clinical workflows, including longitudinal monitoring, risk assessment, automated calculations, alerting, and clinical decision support based on structured vital signs data.

How to Navigate This Guide

This guide is organized into several sections that support implementation from overview to detailed conformance artifacts. All conformance and example resources are listed on the Artifacts page. Key sections include:

• Artifacts — Complete list of profiles, extensions, terminology resources, and example instances defined by this guide.
• Profiles — StructureDefinitions for vital signs observations, devices, supporting resources, and extensions.
• Terminology — ValueSets and terminology bindings used by the profiles.
• Examples — Example instances for observations, devices, and related resources.
• Guidance — Additional implementation guidance and modelling recommendations.
• Changelog — Summary of notable changes across versions of the guide.

IP Statements

Contributors

Name	Role	Organization
Igor Bossenko	Primary Author	HELEX Solutions
Kati Laidus	Co-Author	HELEX Solutions
Peeter Ross	Reviewer	TalTech
Martynas Bieliauskas	Reviewer	LMB