Open AccessThe intra‐arterial selective cooling infusion system: A mathematical temperature analysis and in vitro experiments for acute ischemic stroke therapy
Author(s) -
Jiang Miaowen,
Li Ming,
Gao Yuan,
Wu Longfei,
Zhao Wenbo,
Li Chuanhui,
Hou Chengbei,
Qi Zhengfei,
Wang Kun,
Zheng Shiqiang,
Yin Zhichen,
Wu Chuanjie,
Ji Xunming
Publication year - 2022
Publication title -
cns neuroscience and therapeutics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.403
H-Index - 69
eISSN - 1755-5949
pISSN - 1755-5930
DOI - 10.1111/cns.13883
Subject(s) - hematocrit , hypothermia , perfusion , medicine , stroke (engine) , hyperthermia , anesthesia , biomedical engineering , core (optical fiber) , autologous blood , core temperature , neuroprotection , cardiology , materials science , mechanical engineering , engineering , composite material
The neuroprotection of acute ischemic stroke patients can be achieved by intra‐arterial selective cooling infusion using cold saline, which can decrease brain temperature without influencing the body core temperature. This approach can lead to high burdens on the heart and decreased hematocrit in the scenario of loading a high amount of liquid for longtime usage. Therefore, autologous blood is utilized as perfusate to circumvent those side effects. Methods In this study, a prototype instrument with an autologous blood cooling system was developed and further evaluated by a mathematical model for brain temperature estimation. Results Hypothermia could be achieved due to the adequate cooling capacity of the prototype system, which could provide the lowest cooling temperature into the blood vessel of 10.5°C at 25 rpm (209.7 ± 0.8 ml/min). And, the core body temperature did not alter significantly (−0.7 ~ −0.2°C) after 1‐h perfusion. The cooling rate and temperature distributions of the brain were analyzed, which showed a 2°C decrease within the initial 5 min infusion by 44 ml/min and 13.7°C perfusate. Conclusion This prototype instrument system could safely cool simulated blood in vitro and reperfuse it to the target cerebral blood vessel. This technique could promote the clinical application of an autologous blood perfusion system for stroke therapy.