A patient monitor is a medical device used in healthcare settings to continuously observe and record a patient's vital signs. These vital signs typically include heart rate, blood pressure, respiratory rate, and oxygen saturation levels. The monitor provides real-time data, allowing healthcare professionals to quickly assess a patient's condition and respond to any changes. Patient monitors can be found in various environments, such as hospitals, emergency rooms, and intensive care units. They often feature alarms that alert staff to critical changes in a patient's status, ensuring timely intervention. This technology plays a crucial role in enhancing patient safety and improving outcomes.