The present invention provides systems and methods for monitoring whole blood drawn from a mammalian subject, the system including a fluid delivery device in fluid connection, at a first end, with a vein (or other blood vessel) of the subject, a valve device at a second end of the fluid delivery device, a whole blood monitoring apparatus for measuring a hemoglobin count for example in a blood sample conveyed by the fluid delivery device from the mammalian subject and a processor adapted to analyze data received from the hemoglobin monitoring apparatus to monitor the subject and further to detect if the subject is suffering from internal bleeding.

A regional oximetry sensor can have a sensor head configured to secure to skin of a user and a stem extending from the sensor head. The sensor head can include an emitter configured to transmit optical radiation into the skin and at least one detector configured to receive the optical radiation after attenuation by blood flow within the skin. The stem can be configured to transmit electrical signals from the sensor head to a cable. A plurality of notches can extend from a perimeter of the sensor head towards an interior thereof. The plurality of notches can form a plurality of independently flexible cutouts in the sensor head configured to allow for movement of at least a portion of the skin of the user underlying the sensor head when the regional oximetry sensor is in use.

A hemodialysis system includes: a hemodialysis machine configured to provide hemodialysis treatment to a patient, wherein the hemodialysis treatment includes circulating extracorporeal blood of the patient through an extracorporeal blood circuit; a first oxygen saturation sensor device configured to measure oxygen saturation corresponding to the extracorporeal blood of the patient in the extracorporeal blood circuit; a second oxygen saturation sensor device configured to measure oxygen saturation corresponding to blood flowing within the patient; and at least one controller configured to determine one or more oxygen saturation phase shift (OSPS) values or one or more transcutaneous travel time values corresponding to the patient based on oxygen saturation measurements from the first oxygen saturation sensor device and the second oxygen saturation sensor device.

This application relates to earbuds configured with one or more biometric sensors. At least one of the biometric sensors is configured to be pressed up against a portion of the tragus for making biometric measurements. In some embodiments, the housing of the earbud can be symmetric so that the earbud can be worn interchangeably in either a left or a right ear of a user. In such an embodiment, the earbud can include a sensor and circuitry configured to determine and alter operation of the earbud in accordance to which ear the earbud is determined to be sitting in.

Dialysis patients may be affected by renal failure and may be affected by other health conditions, such as hypertension. During and between dialysis sessions, it may be advantageous to monitor various characteristics of the patient and of the dialysis system. As such, a system and method for dialysis biomarker monitoring is provided.

Techniques and apparatuses for determining an estimated cardiac output for a patient during dialysis treatment are described. In one embodiment, for example, an apparatus may include a memory and logic coupled to the memory. The logic may be configured to determine an upper body oxygen consumption for a patient, determine, during a dialysis process: a hemoglobin concentration and a venous oxygen saturation measured via an optical blood monitor operably coupled to an extracorporeal circuit of a dialysis system performing the dialysis process; an arterial oxygen saturation measured via a pulse oximeter operably coupled to the extracorporeal circuit; an arterial-venous oxygen content difference based on the arterial oxygen saturation and the venous oxygen saturation; and an upper body blood flow (UBBF) as (upper body oxygen consumption)/(arterial-venous oxygen content difference), and determine a treatment recommendation based on the upper body blood flow. Other embodiments are described.

The invention relates to a device for treating an individual suffering from cardiac or circulatory arrest or from a stroke, comprising a blood withdrawal device (BE) that is applied to the individual (P), an analysis unit (BA) which is directly or indirectly connected to the blood withdrawal device for detecting a blood analysis result (BAE) providing at least one characteristic of the blood, directly or indirectly connected to a blood return device (BR) that is applied to the individual (P) and is designed to deliver a substance to the individual via the return device (BR).

Systems and methods for monitoring sleep are disclosed. According to an aspect, a method includes emitting light into tissue. The method also includes detecting light backscattered from the tissue. Further, the method includes determining a sleep pattern based on the backscattered light.

Embodiments described herein relate to a catheter configured to detect at least one blood gas parameter present in blood in an artery of a patient, including, but not limited to, a catheter wall forming at least one lumen configured for umbilical arterial catheterization, at least one optical fiber incorporated in the catheter wall, wherein the at least one optical fiber is configured to detected the at least one blood gas parameter.

A blood analysis system for analysis and correction of blood of a subject includes a centrifugation unit to receive blood of a subject. The centrifugation unit is configured to hold capturing molecules for chemical capture of molecules and/or ions that deactivate at least one of coagulation and complement pathways in the blood and centrifuge to suspend cellular components with a minimal plasma along with the capturing molecules. The blood analysis system includes a correction unit coupled to the centrifugation unit to receive the minimal plasma having the capturing molecules and the cellular components from the centrifugation unit. The correction unit is configured to extract the capturing molecules from the minimal plasma, prior to infusing the minimal plasma having the cellular components along with replaced captured molecules and/or ions back to the subject and discarding the extracted capturing molecules.