Sample collection is the first step in the laboratory investigation process. It involves obtaining biological specimens from patients or subjects. Correct sample collection is crucial for accurate and reliable results.
Lecture Description: This lecture explores the OSI (Open Systems Interconnection) Model and the TCP/IP Model, which are fundamental frameworks in network communication. We begin by discussing the OSI model, developed by the International Standards Organization (ISO), which standardizes how different systems communicate over a network. The OSI model divides network communication into seven distinct layers: Physical, Data Link, Network, Transport, Session, Presentation, and Application.
Atelectasis happens when lung sacs (alveoli) can’t inflate properly, so blood, tissues, and organs may not get oxygen. It can be caused by pressure outside your lung, a blockage, low airflow, or scarring. The most common cause of atelectasis is surgery with anesthesia. Atelectasis usually resolves after treating the underlying cause.