Abstract: A ventilator (1) determines states with cough attacks and an operating method for a ventilator determines cough attacks. It is determined on the basis of pressure measured values (13, 21, 19) and flow measured values (11, 15, 17) whether consecutive elevations of an airway pressure in a ventilator (1) are due to one cough event or due to a plurality of cough events. A plurality of cough events indicates a state of a cough attack. An output (41, 42, 44) of a warning (44) or alarm (42) is issued indicating the state.

Abstract: A device and process generates an alarm during a machine-assisted ventilation of a patient. A minute volume is measured and a median of the minute volume and a lower critical limit value of the minute volume and a time delay are determined and are recorded in a control device. A reference signal is determined as a function of the lower critical limit value for the minute volume and the time delay based on the median of the minute volume. From the reference signal an alarm limit value located below the lower critical limit value as well as a value for a maximum tolerated duration of apnea of the patient are derivable. An alarm signal is generated both during an undershooting of the lower critical limit value over a period of time that is longer than the established time delay and during an undershooting of the alarm limit value.

Abstract: A medical device is provided with an alarm organization. A process for alarm organization of a medical device is also provided. Based on pressure measured values (99) and flow measured values (97) and with a comparison criterion it is determined whether an elevation of an airway pressure (105) of an anesthesia device or of a ventilator is caused by a coughing event. A visual and/or acoustic output (117, 121) of a warning or alarm (42) is adapted, indicating the elevated airway pressure PAW_High (105).

Abstract: A method for generating an alarm during the monitoring of a patient with the step of determining a minute volume (MVpat) of the patient, setting a minute volume lower limit (MVlow) and/or a minute volume upper limit (MVhigh), wherein the minute volume (MVpat) is cumulated by means of an increment function into a volume (Vdeficit_kum) when the measured value drops below the minute volume lower limit (MVlow) or exceeds the minute volume upper limit (MVhigh), and an alarm is triggered when the cumulated volume (Vdeficit_kum) exceeds a maximum allowable volume (Vdeficit_apn). Furthermore, the present invention pertains to a device for reducing clinically irrelevant alarms during the monitoring of a patient for carrying out the method according to the present invention.

Abstract: A method for generating an alarm during the monitoring of a patient with the step of determining a minute volume (MVpat) of the patient, setting a minute volume lower limit (MVlow) and/or a minute volume upper limit (MVhigh), wherein the minute volume (MVpat) is cumulated by means of an increment function into a volume (Vdeficit_kum) when the measured value drops below the minute volume lower limit (MVlow) or exceeds the minute volume upper limit (MVhigh), and an alarm is triggered when the cumulated volume (Vdeficit_kum) exceeds a maximum allowable volume (Vdeficit_apn). Furthermore, the present invention pertains to a device for reducing clinically irrelevant alarms during the monitoring of a patient for carrying out the method according to the present invention.

Abstract: A device and process generates an alarm during a machine-assisted ventilation of a patient. A minute volume is measured and a median of the minute volume and a lower critical limit value of the minute volume and a time delay are determined and are recorded in a control device. A reference signal is determined as a function of the lower critical limit value for the minute volume and the time delay based on the median of the minute volume. From the reference signal an alarm limit value located below the lower critical limit value as well as a value for a maximum tolerated duration of apnea of the patient are derivable. An alarm signal is generated both during an undershooting of the lower critical limit value over a period of time that is longer than the established time delay and during an undershooting of the alarm limit value.