Surgical and post-surgical fluid management to prevent low hematocrit

Abstract

Methods, devices and systems provide information regarding fluid capacity of a patient; i.e., the amount of hematocrit free fluid that can be added to the system to avoid reaching, or to just reach but not fall below, a predetermined low hematocrit limit before, during or after surgeries in which hemodilution may be a concern, such as cardiopulmonary bypass, rather than providing only information regarding hematocrit levels. The fluid capacity of the patient may be displayed to allow a health care provider to make decisions regarding effects of addition of fluid to the blood compartment of the patient.

Description

[0001] field [0002] The present disclosure generally relates to devices, systems, methods, and the like for managing a patient's blood fluid volume and hematocrit before, during, or after a procedure, such as cardiopulmonary bypass. Background technique [0003] Hemodilution can lead to numerous perioperative and postoperative morbidity and mortality. For example, hemodilution can lead to inadequate oxygen delivery and ischemic organ damage, renal failure, heart failure, etc. During procedures such as cardiopulmonary bypass (CPB), a patient is connected to a device with a fluid circuit typically primed with a crystalloid solution with and without red blood cells (RBC). The volume of the circuit filled with the RBC-free solution serves to dilute the hematocrit of the patient's blood. [0004] Therefore, a patient's blood fluid volume and hematocrit level are typically determined prior to performing CPB. In addition to the patient's blood fluid volume, the volume of the CPB...

AI Technical Summary

Problems solved by technology

Although useful, real-time monitoring of hematocrit levels often leads to conservative planning (determining hematocrit levels after changes have occurred) rather than predictive planning for preventing excessive hemodilution during CPB (knowing how changes will affect hematocrit)

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