The system currently allows users to enter and save a Systolic Blood Pressure (BP) value that is lower than the Diastolic BP value. This is incorrect, as Systolic BP should always be greater than Diastolic BP.

Steps to Reproduce:

1. Navigate to the Blood Pressure input screen.
2. Enter a Systolic BP value that is lower than the Diastolic BP value (e.g., Systolic = 80, Diastolic = 90).
3. Save the values.
4. Observe that the system accepts and saves the incorrect values without validation.

Expected Result:
The system should validate the input and prevent saving when the Systolic BP value is less than the Diastolic BP value. An appropriate error message should be displayed to the user.

Actual Result:
The system allows saving incorrect BP values where Systolic BP is lower than Diastolic BP.