Vital Signs

A clinical pathway is a structured, multidisciplinary care plan that translates guideline recommendations into steps of care for a specific condition or procedure. This post explains what pathways contain, what a 2025 Cochrane review of 58 studies found for complications and length of stay, how a hip replacement pathway performed, and how EHR tools and nurses support them.

An advanced persistent threat is a sophisticated, well-resourced adversary that gains a foothold in an organization’s systems and stays for a long time to steal information or disrupt operations. This post explains how APT campaigns work, why health care and research data attract them, which defenses matter most, and how clinicians and informaticists contribute.

Universal health coverage means that all people can get the health services they need, from prevention to palliative care, without financial hardship. This post explains how WHO measures UHC with two indicators, what recent global and country-level studies show about progress and out-of-pocket spending, and the role of health information systems and nurses.

SQL is the standard language for querying and managing data in relational databases, the engine behind many EHR reports and research data warehouses. This post explains what SQL does, how clinical analysts use it, what two recent studies of AI text-to-SQL tools found, and why SQL injection prevention and least privilege protect patient data.

The Omaha System is a research-based, standardized taxonomy for documenting client problems, interventions, and outcomes. This post explains its three components, why it is used in public health nursing and home visiting, what studies of Omaha System data have found about interventions and social determinants of health, and what informaticists should consider when building it into an EHR.

MedDRA is the international medical terminology used by regulators and manufacturers to document, report, and monitor the safety of medical products. This post explains its hierarchy, how the FDA’s adverse event reporting system uses it, what a registry study that coded post-vaccination symptoms with MedDRA shows, and where clinicians and informaticists encounter it.

The Hype Cycle is a five-stage model of how visible and how inflated expectations become as an emerging technology matures. This post explains the stages, how researchers have used the model for telehealth, radiology, and endoscopy AI, what the model cannot do, and how nurses and informaticists can judge new technology without being swept up in the hype.

An episode of care is a group of services given for a specific medical problem over a set time period. This post explains how episodes are defined, how Medicare’s CJR and TEAM bundled payment models use them, what a systematic review of CJR found for spending and outcomes, and what clinical and data teams must do to support episode-based care.

ChatGPT is a large language model chatbot that generates fluent text from patterns learned in massive training data. This post explains what it is, what studies found when it drafted answers to patient questions, where accuracy, privacy, and bias risks arise, and how nurses and informaticists can help govern its use.

Amendments and corrections are the controlled ways to clarify or fix a health record after documentation is complete. This post explains the difference, the HIPAA right to amend and its 60-day timeline, the EHR certification criterion for amendments, and what studies found about patient-initiated requests and errors patients find in open notes.

XML, the Extensible Markup Language, is a W3C specification that lets designers create their own tags to describe data so that different systems can share it. This post explains elements, attributes, and schemas, where XML appears in CDA, FHIR, and CDISC standards, how it compares with JSON, and why secure parsing matters.

Scrum is an iterative and incremental framework mainly used in agile software development. This post explains Scrum’s roles, events, and artifacts from the Scrum Guide, how health IT teams have used sprints to optimize the EHR and build clinical tools, and how nurses and informaticists can take part effectively.

OASIS is a standardized set of assessment items collected for adult home health patients and used to measure outcomes and quality. This post explains the Medicare conditions of participation that govern it, the current OASIS-E1 and OASIS-E2 versions, what a recent national analysis found about linking OASIS to claims, and how home health nurses and informaticists protect data accuracy.

LWBS describes a patient who leaves a healthcare facility without being examined or treated. This post explains how LWBS is counted, what four recent studies found about who leaves and when, how it relates to crowding and equity, and how nurses and informaticists use triage workflow and data to reduce it.

A Gantt chart is a bar chart that shows planned work against time, usually with the people responsible for each activity. This post explains how to read one, how health IT and clinical quality teams have used them, where a chart alone falls short, and how nurses and informaticists can keep a schedule honest.

A digital twin is a virtual representation of a real-world entity or system that can be static, like a simulation, or dynamic, linked to live data. This post explains how twins are built, what reviews and an emergency department study found about hospital use, what the National Academies report says about rigor, and how nurses and informaticists can judge claims.

The HL7 Clinical Document Architecture, or CDA, is an XML-based standard for the structure and semantics of clinical documents so they can be exchanged and read by both machines and people. This post explains the six characteristics of a clinical document, how CDA relates to C-CDA and FHIR, what research found about real-world document quality, and why nurses and informaticists should care.

Access control is the process of granting or denying requests to use information and information services and to enter physical facilities. This post explains the HIPAA technical safeguard for access control, the NIST control family behind it, how least privilege, separation of duties, and emergency access work in clinical settings, and what studies show about inappropriate access to records.

ASC X12 is the ANSI-accredited standards body that develops the electronic data interchange transaction sets used in health care claims, eligibility, claim status, referral authorization, enrollment, and payment. This post explains how X12 transactions are structured, which ones HIPAA adopted, what version 5010 and operating rules add, and how clinical documentation and registration connect to these files.

Section 508 of the Rehabilitation Act requires federal agencies to make electronic and information technology accessible to people with disabilities. This post explains the 508 standards, how they relate to the Web Content Accessibility Guidelines and the HHS Section 504 web and mobile app rule, what studies show about accessibility gaps in health websites, and how nurses and informaticists can help close them.