Cardiac Monitor:

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It is a blood pressure recording app. It helps a user to measure systolic pressure, diastolic pressure and heart rate.

This app should allow users to:

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• Show a list of measurements.
• Users can add new measurements(which always appends to the bottom end of the list).
• View and edit the details of an added measurement.
• Delete a existing measurement.
• See unusual blood pressure highlighted.

Each measurements has the following field:

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• Date measured (presented in dd-mm-yyyy format).
• Time measured (presented in hh:mm format).
• Systolic pressure in mm Hg.(non-negative integer)
• Diastolic pressure in mm Hg.(non-negative integer)
• Heart rate in beats per minute.(non-negative integer)
• Comment.Only the comment field may be left blank for a measurement.

Normal pressures are systolic between 90 and 140 and diastolic between 60 and 90.