A Patient Monitor is a medical device used to continuously measure and display a patient's vital signs in real time. It monitors parameters such as heart rate, blood pressure, oxygen saturation (SpO₂), respiratory rate, body temperature, and electrocardiogram (ECG). This information helps healthcare professionals assess the patient's condition and make timely clinical decisions. Patient monitors are widely used in hospitals, intensive care units (ICUs), emergency departments, operating rooms, and recovery wards. They feature a clear display, audible and visual alarms, and user-friendly controls for easy operation. Many modern monitors also support data storage, networking, and central monitoring systems for improved patient management. The device is designed to provide accurate and continuous monitoring, ensuring early detection of any changes in a patient's condition. Regular maintenance, calibration, and proper use of sensors help maintain reliable performance. Patient monitors play a vital role in improving patient safety, supporting effective treatment, and enhancing the overall quality of healthcare.