Pressure versus volume-controlled ventilation with BASKA mask airway in laparoscopic cholecystectomy: A randomized clinical study

Figures & data

Figure 1. Participant flow diagram.

Table 1. Demographic data and operative details.

Baseline data	VCV (n = 28)	PCV (n = 28)	P-value
Age (years)	34.68 ± 10.94	31.43 ± 1.21	0.256
Sex: No. (%)
Male	3 (10.7%)	2 (7.1%)	1.000
Female	25 (89.3%)	26 (92.9%)
Weight (Kg)	77.54 ± 11.54	72.18 ± 11.54	0.088
Height (meter)	160.57 ± 4.36	158.89 ± 6.16	0.244
BMI (kg/m2)	30.11 ± 4.58	28.53 ± 3.85	0.169
ASA: No. (%)
I	26 (92.9%)	25 (89.3%)	1.000
II	2 (7.1%)	3 (1.7%)
Operative time (min.)	46.68 ± 11.40	43.32 ± 1.15	0.250
Pneumoperitoneum time (min.)	39.71 ± 10.27	36.89 ± 1.25	0.308
Anesthesia time (min.)	57.75 ± 12.53	53.25 ± 11.75	0.171
Insertion time (sec.)	40.61 ± 12.24	39.00 ± 12.05	0.623
Attempt no. (1/2)	21/7	22/6	1.000

Data are expressed as Mean ± SD, number, and percentage. ASA; American society of anesthesiologists, VCV=Volume controlled ventilation, PCV=Pressure controlled ventilation. P < 0.05.

Figure 2. (a) the oropharyngeal leak pressure (OLP) between groups (Mean±sd), P < 0.05 significant difference. (b) the peak inflation pressure (PIP) between groups (Mean±sd), P < 0.05 significant difference. (c) the oropharyngeal leak pressure and Peak inflation pressure difference (OLP-PIP).

Figure 3. Calculated Leak Fraction (LF) in the two groups (Median and range), P < 0.05 significant difference.

Figure 4. Calculated dynamic compliance (Cdyn) in the two groups (Mean±sd) P < 0.05 significant difference.

Table 2. Arterial blood gas analysis (ABG) in the two studied groups.

ABG	VCV (n = 28)	PCV (n = 28)	P-value^1
PH:
Sample I	7.48 ± 0.06	7.50 ± .04	0.091
Sample II	7.43 ± 0.05	7.44 ± .09	0.686
P-value^2	0.001	0.000
Sample III	7.41 ± 0.05	7.42 ± .08	0.642
P-value^2	0.000	0.000
PaO2:
Sample I	372.96 ± 67.48	417.61 ± 97.00	0.051
Sample II	369.75 ± 103.36	361.04 ± 113.70	0.765
P-value^2	0.875	0.038
Sample III	363.07 ± 98.92	382.54 ± 93.89	0.453
P-value^2	0.626	0.139
PaCO2:
Sample I	27.36 ± 7.42	25.29 ± 6.49	0.271
Sample II	31.61 ± 6.17	26.64 ± 7.68	0.010
P-value^2	0.009	0.354
Sample III	31.86 ± 5.66	27.21 ± 7.14	0.009
P-value^2	0.011	0.238

Data are expressed as Mean ± SD, VCV=Volume controlled ventilation, PCV=Pressure controlled ventilation. Sample I; 5 min. after stabilizing of controlled ventilation, Sample II; 15 minutes after pneumoperitoneum insufflation, and sample III; 15 minutes after pneumoperitoneum deflation. P-value¹ < 0.05 significant difference between groups.

P-value² < 0.05 significant difference inside each group.