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Remote patient monitoring or telehealth is healthcare service for patients and doctors, which use IoT devices to track and analyze health status [25].

The work becomes easy for the doctors and nurses in the hospital because of the application of big data. According to researchers at IBM Watson [2], “Above one million gigabytes of medical associated data is likely to be generated by an average person in their lifetime.” With the new innovations in technology, there is a prevalent use of wearable health monitors. The wearable devices collect data such as temperature, oxygen level, heartbeat, calories burned, BP, water intake, and distance walked. These data can be used by the healthcare professional for the clinical research, monitoring and tracking patients’ health. The sensors are also used with in-patients to continuously monitor the patients. For example, the Fitbit smart watches are used by the patients for self-tracking of their health status. All these monitoring systems are connected to hospitals and physicians through the IoT concept for medical assistance. Table 3.5 lists various remote patient monitoring devices with its features.