System and method for monitoring health using exhaled breath

An anesthetic agent delivery system or apparatus for delivering a desired dose of anesthetic agent to a patient comprising:

• (a) an anesthetic supply;
• (b) a breath analyzer for analyzing the patient's breath for concentration of at least one substance indicative of the anesthetic agent concentration in the patient's bloodstream, and for providing a signal to indicate the anesthetic agent concentration delivered to the patient;
• and
• (c) a system controller connected to the anesthetic supply which receives the signal and controls the amount of anesthetic agent based on the signal;
• wherein the breath analyzer comprises a collector for sampling the patient's expired breath, a sensor for analyzing the breath for concentration of at least one substance indicative of the anesthetic agent concentration, a processor for calculating the effect of the agent based on the concentration and determining depth of anesthesia.

An anesthetic agent delivery system or apparatus for delivering a desired dose of anesthetic agent to a patient comprising:

• (a) an anesthetic supply;
• (b) a breath analyzer for analyzing the patient's breath for concentration of at least one substance indicative of the anesthetic agent concentration in the patient's bloodstream, and for providing a signal to indicate the anesthetic agent concentration delivered to the patient;
• and
• (c) a system controller connected to the anesthetic supply which receives the signal and controls the amount of anesthetic agent based on the signal;
• wherein said anesthetic agent supply comprises an anesthetic gas supply, an intravenous agent supply;
• further comprising an inspired gas analyzer for analyzing the concentration of anesthetic gas in the breathing circuit;
• wherein said controller is connected to both an intravenous anesthetic supply and an anesthetic gas supply and which receives signals from both an inspired gas analyzer and an expired gas analyzer and controls the amount of anesthetic agents administered based on the signals or wherein a first controller receives a signal from an inspired gas analyzer and a second controller receives a signal from an expired gas analyzer, and each of said first and second controllers control the amount of anesthetic agent delivered to a patient based on said signals;
• wherein the inspired gas analyzer and expired gas analyzer each comprise a sensor for analyzing the gas for concentration of at least one substance indicative of anesthetic agent concentration and a processor for calculating the effect of the agent based on the concentration and determining depth of anesthesia.

An anesthetic agent delivery system or apparatus for delivering a desired dose of anesthetic agent to a patient comprising:

• (a) an anesthetic supply;
• (b) a breath analyzer for analyzing the patient's breath for concentration of at least one substance indicative of the anesthetic agent concentration in the patient's bloodstream, and for providing a signal to indicate the anesthetic agent concentration delivered to the patient;
• and
• (c) a system controller connected to the anesthetic supply which receives the signal and controls the amount of anesthetic agent based on the signal;
• said system for intravenously delivering a desired dose of anesthetic agent to a patient comprising:
• an intravenous anesthetic supply having a controller for controlling the amount of anesthetic agent provided intravenously by the supply;
• a breath analyzer for analyzing the patient's breath for concentration of at least one substance indicative of the free anesthetic agent concentration in the patient's bloodstream that provides a signal to indicate the free anesthetic agent concentration produced by the anesthetic agent intravenously delivered to the patient;
• and
• a system controller connected to the anesthetic supply which receives the signal and controls the amount of anesthetic agent delivered intravenously based on the signal;
• wherein the breath analyzer comprises a collector for sampling the patient's expired breath, a sensor for analyzing the breath for concentration of at least one substance indicative of the free anesthetic agent concentration in the patient's blood, a processor for calculating the effect of the agent based on the concentration and determining depth of anesthesia.