This lesson moves from the categories of isolation to the harder bedside decisions: transporting an isolated patient, cohorting during outbreaks, managing PPE shortages, and knowing when precautions can safely stop. Implementing isolation is only the first step; sustaining it across transport, procedures, and competing priorities is where transmission is actually prevented or allowed to occur. The RN coordinates many moving parts. Radiology, dialysis, and the operating room all need advance notice. Visitors and ancillary staff need teaching at the door. Roommates and unit flow must be managed when private rooms are scarce. Each handoff is an opportunity for a breach. Consider a realistic stem: you are the charge nurse with one negative-pressure room and three new admissions, a client with suspected pulmonary tuberculosis, a client with influenza, and a client with a draining MRSA wound. Which client receives the negative-pressure room? The tuberculosis patient, because only airborne disease requires negative pressure, while the others are safely managed with droplet and contact precautions in standard rooms. Prioritization questions like this reward understanding why each transmission route needs the controls it does,...