Novel Strategy to Monitor Fluid Absorption and Blood Loss during Urological Endoscopic Surgery: An Advanced Approach

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Novel Strategy to Monitor Fluid Absorption and Blood Loss during Urological Endoscopic Surgery: An Advanced Approach

September 11, 2021 Health Research 0

Background: An ideal method for detecting fluid absorption and haemorrhage during urological endoscopic surgery is lacking. We created an endoscopic surgical monitoring system (ESMS) and evaluated its efficacy in order to create a practical equipment that can accurately and non-invasively monitor blood loss and fluid absorption during urological endoscopic surgery.

Our system used strain gauge transducers to monitor irrigating solution inflows and outflows, as well as a photoelectric sensor to quantify the haemoglobin concentration in the collected irrigating fluid. A computer programme could calculate the amount of blood lost and the volume of fluid absorbed during endoscopic surgery. In a simulated experiment and clinical investigation of 200 patients who underwent transurethral resection of the prostate, the accuracy and validity of this approach were validated (TURP).

The relative errors for fluid absorption detection varied from 0.07 to 1.00 percent, with the coefficient of variation in serial analysis ranging from 0.78 to 3.86 percent. Furthermore, relative errors for blood loss detection ranged from 0.06 percent to 1.33 percent, while serial analysis coefficients of variation ranged from 0.86 percent to 3.94 percent. The mean fluid intake was 644 mL and the blood loss was 238 mL in a TURP clinical investigation.

Conclusions: We show that ESMS is accurate and reliable. It detects and warns of irrigation fluid absorption and blood loss early and in real time, making endoscopic surgery safer for the patient.

Author (S) Details

Yunxin Zhang
Department of Urology, The Second Hospital of Lanzhou University, Lanzhou, China and Institute of Urology, The Second Hospital of Lanzhou University, Lanzhou, Gansu, China and Key Laboratory of Urological Diseases in Gansu Province, Gansu Nephro-Urological Clinical Center, Lanzhou, China.

Ning Fan
Department of Urology, The Second Hospital of Lanzhou University, Lanzhou, China and Institute of Urology, The Second Hospital of Lanzhou University, Lanzhou, Gansu, China and Key Laboratory of Urological Diseases in Gansu Province, Gansu Nephro-Urological Clinical Center, Lanzhou, China.

Lixiu Zhang
Institute of Urology, The Second Hospital of Lanzhou University, Lanzhou, Gansu, China and Key Laboratory of Urological Diseases in Gansu Province, Gansu Nephro-Urological Clinical Center, Lanzhou, China.

Xuemei Hu
Institute of Urology, The Second Hospital of Lanzhou University, Lanzhou, Gansu, China and Key Laboratory of Urological Diseases in Gansu Province, Gansu Nephro-Urological Clinical Center, Lanzhou, China.

Li Wang
Department of Pharmacology, School of Basic Medical Sciences, Lanzhou University, Lanzhou, China.

Hanzhang Wang
Department of Urology, University of Texas Health Science Center, San Antonio, TX, USA.

Dharam Kaushik
Department of Urology, University of Texas Health Science Center, San Antonio, TX, USA.

Ronald Rodriguez
Department of Urology, University of Texas Health Science Center, San Antonio, TX, USA.

Zhiping Wang
Department of Urology, The Second Hospital of Lanzhou University, Lanzhou, China and Institute of Urology, The Second Hospital of Lanzhou University, Lanzhou, Gansu, China and Key Laboratory of Urological Diseases in Gansu Province, Gansu Nephro-Urological Clinical Center, Lanzhou, China.

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