13 results about "Fluid balance" patented technology

The present invention provides a system and method for measuring the effective circulating volume (ECV), and for estimating changes in total body water (TBW) during the dehydration and rehydration phases. This invention is applicable in clinical and non-clinical settings, including but not limited to sports performance monitoring, medical diagnostics, and managing fluid balance in patients with cardiovascular or renal conditions.

The disclosed subject matter relates to extracorporeal blood processing or other processing of fluids. Volumetric fluid balance, a required element of many such processes, may be achieved with multiple pumps or other proportioning or balancing devices which are to some extent independent of each other. This need may arise in treatments that involve multiple fluids. Safe and secure mechanisms to ensure fluid balance in such systems are described.

An embodiment of the present invention discloses a method for constructing a sepsis clinical decision-making model assisted by reinforcement learning, including: using multiple physiological indicators of sepsis patients in historical clinical data as state variables, and using the dose combination of intravenous infusion and vasopressor actually taken by doctors as action variables to construct training samples for the reinforcement learning model; building an agent model based on reinforcement learning according to the training samples, and the model includes a feature extraction layer, an embedding processing layer and a Q-value calculation layer; using the training samples to train the model in a reinforcement learning manner, and the trained model is used to recommend the best dose combination according to multiple physiological indicators of a patient at a certain moment; during the training process, the role of fluid balance and blood pressure in dose selection is enhanced through a reward function, and the role of blood protein and lactic acid is inhibited. This embodiment uses agent learning to assist sepsis clinical decision-making.

The disclosed subject matter relates to extracorporeal blood processing or other processing of fluids. Volumetric fluid balance, a required element of many such processes, may be achieved with multiple pumps or other proportioning or balancing devices which are to some extent independent of each other. This need may arise in treatments that involve multiple fluids. Safe and secure mechanisms to ensure fluid balance in such systems are described.

Systems and methods are disclosed for performing online extracorporeal photopheresis in which the needs of a particular patient as to the fluid balance to be achieved and the time allotted to perform the procedure can be prioritized. Whole blood is removed from a patient and introduced through a processing set into a separation chamber to separate the desired cell population from the blood. The separated cell population is processed through the set which is associated with a treatment chamber where the cells are treated. Once treated, the cells are returned to the patient.

A fluid balance management system includes: a detection device configured to output a detection signal corresponding to a load applied to a bed in which a subject is present; a prediction device configured to acquire load variation information indicating a variation over time of the load based on the detection signal, and predict an event that causes variation in fluid balance of the subject from the load variation information; and an output device configured to output prediction information corresponding to a prediction result of the event.

Various examples are provided related to fluid balance management and monitoring. The system can monitor a fluid balance based at least in part on an analysis of fluid intake data, fluid output data, physiological data points, target balance data, or any combination thereof. The system can also continuously or periodically adjust at least one of: a restoration fluid flow rate or a fluid removal flow rate based at least in part on the monitored fluid balance. The system generates a fluid balance graph that indicates fluid balance over time using the fluid intake data, the fluid output data, and at least one of: the restoration fluid flow rate, the fluid removal flow rate, or any combination thereof. The system can further include alerts, projected fluid balance and fluid balance path, and the ability to incorporate manual and clinical data to identify a fluid balance path to adhere to.

The utility model discloses a plate heat exchanger with a fluid distribution function and a fluid balance function, which comprises a first heat exchange plate and a second heat exchange plate which are alternately arranged, each of the first heat exchange plate and the second heat exchange plate is of a corrugated plate structure with a ridge part and a groove part, and each of the first heat exchange plate and the second heat exchange plate is provided with a first corner hole; the refrigerant side spaces and the heat exchange side spaces are alternately arranged; the first heat exchange plate is provided with a first boss as high as the ridge part corresponding to the first corner hole, and the second heat exchange plate is provided with a first sinking platform as deep as the groove part corresponding to the first corner hole; a fluid distribution structure is formed in the refrigerant side space corresponding to the first boss and the first sinking table; and at least one fluid balance structure communicated with the adjacent refrigerant side space is arranged at the position, corresponding to the relative total energy smaller than 50% of the pressure potential energy, in the refrigerant side space. According to the utility model, the fluid distribution structure and the fluid balance structure are matched to balance the flow and the pressure among the refrigerant side spaces, and the heat transfer effect is improved.

Calculating fluid balance of patient 10 during predefined reference time-period (RTP). When patient 10 is in bed 30, bed scale 32 weighs bed 30 at first and second time points within RTP. Reader 74 ha

The present application relates to the technical field of peritoneal dialysis monitoring, and discloses a peritoneal dialysis fluid balance monitoring system and method based on dynamic weighing and data fusion. The system comprises dynamic weighing, multi-source data acquisition, data fusion processing, balance monitoring and early warning output modules. The dynamic weighing module acquires the input and output amounts of dialysis fluid in real time and generates weight data; the multi-source data acquisition module obtains dialysis fluid composition, treatment time and patient physiological parameters; the data fusion processing module fuses the above data to generate dialysis fluid balance characteristic data; the balance monitoring module calculates the net ultrafiltration amount and the fluid balance state according to the above data, and identifies the risk of abnormal leakage or fluid retention; and the early warning output module generates early warning information when the risk is identified. The system does not require manual intervention, can acquire and fuse multi-source data in real time, accurately judges the fluid balance state and timely generates early warning information, and is suitable for hospital and home peritoneal dialysis scenarios.

A system for perioperative fluid management is provided. The system includes a plurality of sensors configured to generate measurement data representing fluid input to and output from a subject. A monitoring device generates hemodynamic data representing the subject's cardiac output. A computing device receives the measurement data, computes a fluid balance, and determines, based on the fluid balance and the hemodynamic data, whether adjustment to the infusion rate is required to achieve or maintain the subject's cardiac output. If adjustment is required, the computing device generates a control signal representing an adjusted infusion rate. An infusion pump receives the control signal and delivers fluids to the subject according to the adjusted infusion rate.