Other Articles

Apr 13, 2026

Breath Alcohol Testing Devices (Breathalyzers)

This article provides a comprehensive overview of breath alcohol testing devices, commonly known as breathalyzers. It explains the fundamental differences between fuel cell and semiconductor sensor technologies, discusses their accuracy and reliability, and reviews the legal standards for blood alcohol concentration (BAC) in driving enforcement. The article also covers factors affecting measurement validity and concludes with frequently asked questions.

By Dr. Felipe Torres

Apr 13, 2026

Mechanical Ventilators

This article explains what a mechanical ventilator is, how it functions, and how it is used in clinical settings. It covers noninvasive and invasive ventilation modes, including CPAP and BiPAP, and discusses the physiology of positive pressure support. The article also reviews risks and complications, and concludes with a question-and-answer section.

By Anjali Deshpande

Apr 10, 2026

Ultrasound Diagnostic Systems: Principles, Imaging Mechanisms, and Clinical Interpretation

This article examines ultrasound diagnostic systems as non-invasive imaging technologies that use high-frequency sound waves to visualize internal structures. It defines the concept, explains the underlying physics, and explores how images are generated and interpreted. The discussion also covers system components, accuracy considerations, limitations, and future developments, followed by a structured question-and-answer section.

By Grace Nwoye, MPH