A breathing apparatus (1) is disclosed that is adapted to determine a transpulmonary pressure in a patient (125) when connected to said breathing apparatus. A control unit (105) is operable to set a first mode of operation for ventilating said patient with a first Positive End Expiratory Pressure (PEEP) level; set a second mode of operation for ventilating said patient with a second PEEP level starting from said first PEEP level; and determine said transpulmonary pressure (Ptp) based on a change in end-expiratory lung volume (ΔEELV) and a difference between said first PEEP level and said second PEEP level (ΔPEEP). Furthermore, a method and computer program are disclosed.

There is provided a method that includes receiving pulse-oximetry measurements (SpO.sub.2) of a patient's peripheral arterial blood oxygen saturation during a first time period, and receiving breathing samples of the patient. The method further includes determining, using breathing samples of the patient, oxygen partial pressure measurements (P.sub.AO.sub.2) and carbon dioxide partial pressure measurements (P.sub.ACO.sub.2) from exhaled air of the patient during a steady-state breathing of the patient during the first time period. The method also includes determining an arterial oxygen partial pressure (P.sub.aCO.sub.2), an oxygen deficit (P.sub.AO.sub.2−P.sub.aO.sub.2) and a respiratory exchange ratio (RQ) of the patient using the pulse-oximetry measurements (SpO.sub.2), the oxygen partial pressure measurements (P.sub.AO.sub.2) and the carbon dioxide partial pressure measurements (P.sub.ACO.sub.2), and generating one or more signals based on the determining of the arterial oxygen partial pressure (P.sub.aO.sub.2), the oxygen deficit (P.sub.AO.sub.2−P.sub.aO.sub.2) and the respiratory exchange ratio (RQ) of the patient.

Active auscultation may be used to determine organ (e.g., lung or heart) characteristics of users. An acoustic or piezo-electric signal (e.g., a pulse, a tone, and/or a broadband pulse) may be projected into an animal (typically human) body or thorax. The signal interacts with the body, or lungs, and in some cases may induce resonance within the body/lungs. A resultant signal may be emitted from the body which may be analyzed to determine, for example, a lung's resonant frequency or frequencies and/or how the sound is otherwise absorbed, reflected, or modified by the body. This information may be indicative of lung characteristics such as lung capacity, a volume of air trapped in the lungs, and/or the presence of COPD.

Active auscultation may be used to determine organ (e.g., lung or heart) characteristics of users. An acoustic or piezo-electric signal (e.g., a pulse, a tone, and/or a broadband pulse) may be projected into an animal (typically human) body or thorax. The signal interacts with the body, or lungs, and in some cases may induce resonance within the body/lungs. A resultant signal may be emitted from the body which may be analyzed to determine, for example, a lung's resonant frequency or frequencies and/or how the sound is otherwise absorbed, reflected, or modified by the body. This information may be indicative of lung characteristics such as lung capacity, a volume of air trapped in the lungs, and/or the presence of COPD.

A system of treating atelectasis is provided that includes a tracheal tube positioned within an airway of a ventilated patient and an acoustic sensor coupled to the tracheal tube. The system also includes a monitor communicatively coupled to the acoustic sensor. The monitor includes a processor configured to receive a baseline signal from the acoustic sensor. The processor is configured to provide control instructions to adjust a pressure of a gas mixture delivered to the airway through the tracheal tube. The processor is also configured to receive an updated signal from the acoustic sensor after the adjustment and identify a change in airway openness of lungs of the ventilated patient caused by the adjustment of the pressure. Further, identifying the change is based on the baseline signal and the updated signal.

A rhinomanometry device including: a measurement device for measuring at least one set of values of one or more parameters relating to a respiratory function of the nose of a patient; a memory for storing measurement values; a processing and control device for processing an output of the measurement device, the processing and control device to: determine if the set of measured values satisfies at least a first predetermined criterion; control the memory to store the set of measured values, and control the measurement device to stop the measurement in response to determining that the set of measured values satisfies at least a second predetermined criterion.

This invention relates to a method or system for providing an indication or establishment of airway patency of a patient comprising monitoring of at least one targeted gas (e.g. CO2, N2 or may be other gases capable of being detected, monitored, and measured) that is being expired or being expelled from an airway of a patient (e.g. an apnoeic or non-spontaneously breathing patient), and based on measurements of the at least one targeted gas for a period of time, providing an indicator as to an output of the measurements of the at least one targeted gas for the period of time, or a determination as to airway patency, or a determination as to a location of a blockage or obstruction in the airway, or combinations of these.

A system and method for monitoring resuscitation and respiratory mechanics of a patient is provided. A pressure sensor detects air pressure within an air-flow path of a resuscitator and generates a first detection signal in response thereto. A flow-rate sensor detects the flow-rate within the air-flow path and generates a second detection signal In response thereto. A processor receives and processes the first and second detection signals using an algorithm to identify a ventilation rate, a lung pressure, and an air volume corresponding to the respiratory air. A report is generated of real-time feedback about respiration of the patient that includes the ventilation rate, lung pressure, and air volume.

A system and method for monitoring resuscitation and respiratory mechanics of a patient is provided. A pressure sensor detects air pressure within an air-flow path of a resuscitator and generates a first detection signal in response thereto. A flow-rate sensor detects the flow-rate within the air-flow path and generates a second detection signal In response thereto. A processor receives and processes the first and second detection signals using an algorithm to identify a ventilation rate, a lung pressure, and an air volume corresponding to the respiratory air. A report is generated of real-time feedback about respiration of the patient that includes the ventilation rate, lung pressure, and air volume.

A method for determining a respiratory condition or for assessing the efficacy of a treatment for a respiratory condition or for optimizing a treatment protocol for a respiratory condition in a subject comprising the steps of: a) obtaining image data concerning two or more three-dimensional images of the subject's respiratory system, which images have been previously acquired during an assessment period; b) calculating a specific three-dimensional structural model of the subject's respiratory system for each of the two or more three-dimensional images of step a); c) comparing the three-dimensional structural models of step b) with each other to determine a respiratory condition or to assess the efficacy of a treatment for a respiratory condition or to optimize a treatment protocol for a respiratory condition.