Effects of spinal immobilization at 20° on end-tidal carbon dioxide.
Am J Emerg Med
; 38(6): 1180-1184, 2020 06.
Article
em En
| MEDLINE
| ID: mdl-32122717
ABSTRACT
OBJECTIVE:
The aim was to determine the effect on end-tidal carbon dioxide (ETCO2) of spinal immobilization (SI) at a conventional 0° angle and to investigate the usefulness of immobilization at a 20° angle for preventing possible hypoventilation.METHODS:
The study included 80 healthy volunteers, randomly divided into two groups. Spinal backboards and cervical collars were applied in Group 1 using a 0° angle and in Group 2 using a 20° angle, with the head up. SI was continued for 1â¯h, and ETCO2 values were measured at the 0th, 30th and 60th minute.RESULTS:
There were no significant differences between the groups in 0th and 30th minute ETCO2. However, after 60th minute, results showed a statistically significant increase in ETCO2 in Group 1 (35.5â¯mmHg [IQR 25-7535-38]) compared to Group 2 (34â¯mmHg [IQR 25-7533-36]) (pâ¯<â¯0.001). During SI, there was a statistically significant increase in ETCO2 in Group 1 (35â¯mmHg [IQR 25-7534-36], 35.5â¯mmHg [IQR 25-7534-37] and 36â¯mmHg [IQR 25-7535-38] respectively at the 0th, 30th and 60th minute after SI) (pâ¯<â¯0.001) and no change in Group 2. Also, we found statistically significant differences between ΔETCO2 levels in Groups 1 and 2 at all 3 time intervals.CONCLUSION:
Conventional SI with an angle of 0° led to an increase in ETCO2 while subjects immobilization at a 20° angle maintained their initial ETCO2 values. Immobilization at 20° may prevent decompensation in patients who have thoracic trauma or lung diseases or those who are elderly, pregnant, or obese.Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Restrição Física
/
Dióxido de Carbono
/
Volume de Ventilação Pulmonar
Tipo de estudo:
Etiology_studies
/
Observational_studies
Limite:
Adult
/
Female
/
Humans
/
Male
Idioma:
En
Revista:
Am J Emerg Med
Ano de publicação:
2020
Tipo de documento:
Article