FYP2 : Week 14

Writing Second Results 
(Relationship between Heart Rate and Blood Pressure)

Objective : 

• To identify the relationship between the heart rate and blood pressure

• To continue writing chapter 4 for final project report

Activity: As this project is focusing on about blood pressure but the pulse sensor only can detect the heart rate so this is to investigate their relationship. As mentioned from heart.org, there could be variation in the relationship between the blood pressure and heart rate. If the heart rate increase, the blood pressure may also increase but the increase rate might not rise at the same rate. So, this experiment use patient monitor which used two part of it which are the pulse oximeter to measure the heart rate and non-invasive blood pressure to measure blood pressure(NIBP). Pulse oximeter need to clip the sensor on fingertip while NIBP use a cuff to measure blood pressure. The normal heart rate is from 60 to 100 heart beat per minute (bpm). Meanwhile, the normal range of blood pressure is from 120 for systolic and 80 for diastolic.Blood pressure reading unit in melimeters mercury (mmHg).

As can be seen below in Figure 1 which is the result for person 1, the heart rate is 57 which is lower than normal range of heart rate. Then, the blood pressure reading is 97/55 which 97 represent the systolic value and 55 for diastolic. This blood pressure is in low blood pressure category or known as hypotension in medical terms. The other results can be seen from Figure 2 which for person 3, the heart rate more than 100 which is higher than normal rate and the blood pressure produced in high blood pressure category or known as hypertension. The blood pressure will increases when the heart rate increases and vice versa. This shows that when heart rate lower than 60 will cause the low blood pressure and when the heart rate above 100 will produce high blood pressure category.

Figure 1 Resuls display on the patient monitor

Figure 2 Graph blood pressure versus heart rate

Conclusion : As conclusion, abnormal reading of heart rate will produce abnormal blood pressure. Fall alarm will be send out after it detect fall threshold and abnormality of blood pressure.