May Renal Resistive Index Be an Early Predictive Tool of Postoperative Complications in Major Surgery? Preliminary Results

Table 3

Outcome results and RRI.

	Global population			Cardiothoracic population
	RRI<0.7	RRI>0.7	𝑃	RRI<0.7	RRI>0.7	𝑃
𝑁	145	60		80	42
Global complications	27 (18.62%)	19 (31.67%)	0.042	14 (17.50%)	15 (35.71%)	0.042
Suture leak	2 (1.38%)	2 (3.33%)	0.582	0	0
Bleeding	4 (2.76%)	1 (1.67%)	1.000	3 (3.75%)	0	0.550
ARDS	1 (0.69%)	3 (5.00%)	0.076	1 (1.25%)	3 (7.14%)	0.117
Pneumonia	4 (2.76%)	7 (11.67%)	0.016	1 (1.25%)	6 (14.29%)	0.007
Atelectasis	3 (2.07%)	3 (5.00%)	0.361	1 (1.25%)	3 (7.14%)	0.117
SIRS/Sepsis	2 (1.38%)	4 (6.67%)	0.062	2 (2.50%)	4 (9.52%)	0.180
Septic shock	1 (0.69%)	6 (10.00%)	0.003	0	4 (9.52%)	0.013
ARF	2 (1.38%)	8 (13.33%)	0.001	2 (2.50%)	7 (16.67%)	0.008
Pulmonary embolism	0	1 (1.67%)	0.293	0	1 (2.38%)	0.344
Acute respiratory failure	4 (2.76%)	2 (3.33%)	1.000	1 (1.25%)	2 (4.76%)	0.272
Hepatic insufficiency	1 (0.69%)	0	1.000	0	0
Arrhythmia	8 (5.52%)	5 (8.33%)	0.530	6 (7.50%)	4 (9.52%)	0.735
ICU admission (𝑛)	56 (38.62%)	24 (40.00%)	0.854	33 (41.25%)	18 (42.86%)	0.864
ICU staying (days)	1 (1–36)	4 (1–38)	0.001	3 (1–36)	5.5 (2–38)	0.006
Mechanical ventilation (𝑛)	53 (36.55%)	19 (31.67%)	0.505	33 (41.25%)	17 (40.48%)	0.934
Mechanical ventilation (hours)	12 (1–240)	32 (6–300)	0.004	12 (1–240)	32 (6–300)	0.001
Length-of-stay (days)	8 (1–37)	8 (4–40)	0.246	8 (1–22)	8 (4–24)	0.023
Death (𝑛)	2 (1.38%)	3 (5.00%)	0.151	1 (1.25%)	2 (4.76%)	0.272

Complications that did not occur are not reported. Some patients experienced more than 1 adverse event.