An in-laboratory polysomnography (PSG) at Pulmovista Clinics is an overnight study — patients typically arrive at 8–9pm and are discharged the following morning. During the study, multiple sensors are attached to monitor brain activity, eye movements, muscle tone, breathing effort, airflow, oxygen levels, heart rhythm, and body position. The sensors are non-invasive and do not cause pain — the main adjustment required is simply sleeping with them in place. Most patients sleep acceptably in the sleep laboratory, and even a few hours of recordable sleep is sufficient for diagnosis. Results are reviewed by Dr. Dixit Kumar Thakur and a follow-up appointment is scheduled within 1–2 weeks.
