Open AccessPortable system for monitoring of regional cerebral oxygen saturation during prehospital cardiopulmonary resuscitation: a pilot study
Author(s) -
Tajima Goro,
Shiozaki Tadahiko,
Izumino Hiroo,
Yamano Shuhei,
Hirao Tomohito,
Inokuma Takamitsu,
Yamashita Kazunori,
Nagatani Atsuko,
Onishi Mitsuo,
Hirose Tomoya,
Shimazu Takeshi,
Hamasaki Toshimitsu,
Tasaki Osamu
Publication year - 2015
Publication title -
acute medicine and surgery
Language(s) - English
Resource type - Journals
ISSN - 2052-8817
DOI - 10.1002/ams2.71
Subject(s) - cardiopulmonary resuscitation , medicine , resuscitation , oxygen saturation , saturation (graph theory) , anesthesia , emergency medicine , oxygen , cardiology , chemistry , organic chemistry , mathematics , combinatorics
Aim We aimed to create a system for monitoring of regional cerebral oxygen saturation (r SO 2 ) in patients with prehospital cardiopulmonary arrest and clarify the changes in r SO 2 during cardiopulmonary resuscitation. Methods We measured r SO 2 in cardiopulmonary arrest patients who were transferred by the emergency response vehicle of N agasaki U niversity H ospital. We developed a portable r SO 2 monitor ( HAND ai TOS ), which is small enough to carry during prehospital treatment. The sensor is attached to the forehead of the patient and monitors r SO 2 continuously during treatment and transfer. Results No difficulties were experienced in monitoring r SO 2 during patient treatment and transfer. Median time (interquartile range) from the emergency medical service call to emergency response vehicle arrival was 15.0 min (11.0–19.5 min). Median r SO 2 on emergency response vehicle arrival at the scene was 46.3% (44.0–48.2%) ( n = 9; median age, 74.0 years; four men, five women). Median r SO 2 showed significant increase within 5 min after return of spontaneous circulation ( n = 6, 46.6% versus 58.7%, P < 0.05). There was no significant increase in r SO 2 during prehospital cardiopulmonary resuscitation until return of spontaneous circulation was established. Conclusions We developed an r SO 2 monitoring system for use during prehospital cardiopulmonary resuscitation. The monitoring system showed a significant increase in r SO 2 after return of spontaneous circulation, whereas there was no significant increase in r SO 2 during cardiopulmonary resuscitation after intubation but before return of spontaneous circulation.