Closed Loop Anesthesia

Abstract

Anesthetization or the practice of anesthesia in hospitals, mainly involves giving
anesthetic drugs to patients to produce temporary loss of sensation for medical purposes.
Amongst all the difficulties that arise during the surgery, one of the most feared is
complication in injection of anesthesia drugs (Examples: Propofol, Fentanyl). This
complication is common for all age groups undergoing major surgeries. During major
surgeries, an anesthesia specialist is always needed at that place. The process which are
monotonous and requires constant attention of anesthetist are vulnerable to errors. The
focus of this paper is to design a delivery system that is closed loop, cost efficient and not
time-consuming. This can be done by measuring all the parameters from human body using
different sensors. The various sensors used for this purpose are ECG sensor, Pulse sensor,
Blood pressure sensor and Temperature sensor. The Measurable parameters from these
sensors are ECG waveform (Amplitude/Time period), Pulse Rate (pulse/min),
Systolic/Diastolic Pressure (mmHg), Body Temperature. The system detects the output
level, feedback this information and compares it to a fixed point that defines the desired
output level. This is called Feedback Loop System. Thus, this paper elaborates on the
measurement of ECG waveform, Pulse rate, Blood Pressure and Body Temperature which
could help us in controlling the flow of anesthesia induced in a given period of time during
major surgeries.