Effects of carbohydrate use on preoperative thirst: a randomized clinical trial

to evaluate the effectiveness of carbohydrate popsicles, carbohydrate solution, and usual care (fasting) on the intensity and discomfort of preoperative thirst.

Methods:

a randomized clinical trial with 60 preoperative patients aged between 18 and 60 years, randomized into three groups: control (fasting), carbohydrate solution (100 ml), and carbohydrate popsicle (100 ml). The outcomes were thirst intensity and discomfort.

Results:

there was a difference between groups for final thirst intensity (p = 0.01) and final thirst discomfort (p = 0.001). The effect size for both the Solution Group and the Popsicle Group was robust: 0.99 and 1.14, respectively.

Conclusions:

the groups that received the carbohydrate fasting abbreviation showed a reduction in thirst discomfort compared to the control group. The carbohydrate popsicle proved more effective in reducing the intensity of thirst. NCT: 3.209.283

Descriptors:
Fasting; Thirst; Carbohydrates; Perioperative Nursing; Controlled Clinical Trial.

Variáveis	Control Group(n = 20) Median (1^st and 3^rd quartile)	Solution Group (n = 20) Median (1^st and 3^rd quartile)	Popsicle Group (n = 19) Median (1^st and 3^rd quartile)	p value
Age (years)	50.0 (40.3. 52.0)	41.0 (35.0. 49.0)	43.0 (28.0. 43.0)	0.120^* * Kruskal-Wallis.
Full fasting (hours)	12.9 (11.16. 14.5)	13.25 (12.06. 14.3)	11.5 (10.66. 13)	0.124^* * Kruskal-Wallis.
Liquid fasting (hours)	11.8 (10.38. 13.53)	12.18 (10.46. 13.25)	10.91 (10.5. 12.58)	0.800^* * Kruskal-Wallis.
	n (%)	n (%)	n (%)	p value
Gender
Male	9 (29.0)	9 (29.0)	13 (42.0)	0.242^ Chi-square.
Female	11 (39.3)	11 (39.3)	6 (21.4)
ASA
I	11 (34.4)	10 (31.2)	11 (34.4)	0.882^ Chi-square.
II	9 (33.3)	10 (37.0)	8 (29.7)

Outcomes	Control Group Median (1^st and 3^rd quartile)	Carbohydrate Solucion Group Median (1^st and 3^rd quartile)	Carbohydrate Popsicole Group Median (1^st and 3^rd quartile)	p value	CSG vs CG^‡	CPG vs CG^‡
Initial Intensity	8.0 (6.0. 10.0)	7.5 (6.0. 8.0)	8.0 (6.0. 10.0)	0.499	0.20	-0.16
Final Intensity	8.0 ^a (3.0. 10.0)	5.0^ab (2.3. 5.0)	3.0^b (2.0. 5.0)	0.010	0.91	0.94
Intensity Variation	0.0 ^a (-2.8. 0.0)	-3.0^b (-4.0. -1.3)	-4.0^b (-6.0. -1.0)	< 0.001	1.08	1.76
Initial EDESP	6.5 (4.0. 12.3)	8.0 (5.3. 12.8)	10.0 (7.0. 12.0)	0.298	0.66	-0.49
Final EDESP	6.5 ^a (3.0. 12.5)	3.0^b (1.0. 5.8)	2.0^b (1.0. 4.0)	0.001	0.99	1.14
EDESP Variation	0.0 ^a(-0.5. 0.0)	-5.0^b (-8.0. -2.0)	-7.0^b (-9.0. -5.0)	< 0.001	1.48	3.76

*Attributes^ * To calculate the percentage of the attributes, responses 1 or 2 were considered, that is, the presence or absence of the attribute.**	Control Group		Solution Group		Popsicle Group
	Before (%)	After (%)	Before (%)	After (%)	Before (%)	After (%)
Dry mouth	65.0	55.0	90.0	40.0	94.7	15.8
Dry lips	65.0	65.0	65.0	45.0	78.9	10.5
Thick tongue	45.0	45.0	70.0	15.0	57.9	26.3
Thick saliva	90.0	90.0	95.0	55.0	100.0	47.4
Dry throat	70.0	55.0	75.0	20.0	73.7	21.1
Bad taste in the mouth	55.0	55.0	65.0	25.0	57.9	15.8
Desire to drink water	90.0	90.0	95.0	55.0	100.0	47.4

Associação Brasileira de Enfermagem SGA Norte Quadra 603 Conj. "B" - Av. L2 Norte 70830-102 Brasília, DF, Brasil, Tel.: (55 61) 3226-0653, Fax: (55 61) 3225-4473 - Brasília - DF - Brazil
E-mail: reben@abennacional.org.br

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[1] Corresponding author: Carla Brandão de Oliveira carlabvp@hotmail.com