DESIGN AND BUILD THE ANGLE METER FOR THE BED OF TRAUMATIC BRAIN INJURY PATIENTS TO PREVENT INCREASED INTRACRANIAL PRESSURE

Abstract

This research aimed to design and build the angle meter for the bed of traumatic brain injury patients to prevent increased intracranial pressure. The objective is to facilitate the nurses to adjust the bed head angle to 30 degrees, according to the medical guideline for preventing increased intracranial pressure. The angle meter consists of 2 main parts: the angle measuring device and the angle reading device. The first part is attached to the head of the bed to measure angles. The second part is divided into 2 units depending on the connection types, connected by wiring system and by smartphone with the application installed and Bluetooth enabled. Therefore, users can choose to use the angle meter in 2 ways. The research method was divided into 2 steps. The first step was to test the performance of the angle meter, which consists of the Bluetooth signal strength test at a distance of 3 meters. Accuracy percentage test with calibration was conducted by calibrating meter from a calibration laboratory according to ISO 17025. Precision test was performed by repeating measurements at a 30-degree angle for 5 times The second step was a survey of the satisfaction of 10 nurses after using an angle meter. It was found that the angle meter has a Bluetooth signal strength of more than -86 dBm. It has a 100% accuracy percentage and the precision of 1. In addition, the nurses had the highest level of satisfaction at the average score of 4.615 after using the angle meter.