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

Table 1

Population characteristics.

Age (years)	61.7±14.6
BMI (Kg/m^2 body surface area)	25.4±3.9
ASA 3-4 (𝑛)	102 (49.76%)
Smoking (𝑛)	98 (47.80%)
Diabetes (𝑛)	26 (12.68%)
Hypertension (𝑛)	100 (48.78%)
COPD (𝑛)	43 (20.98%)
Myocardiopathy (𝑛)	94 (45.85%)
Serum creatinine (mg/dL)	0.855 (0.44–2.0)
EF (%)*	54.6±8.4
EDV (mL)*	154 (55–180)
Urine albumin (𝑛)	16 (7.80%)
Systolic arterial pressure (SAP) mmHg^§	130±19
Diastolic arterial pressure (DAP) mmHg^§	72±12
Mean arterial pressure (MAP) mmHg^§	88±15
Heart Rate (bpm)^§	75±12
Haematocrit (%)	39.3±5.4

∗Only 96 patients underwent preoperative echocardiogram.
§Blood pressure and heart rate were recorded when patient arrived in operative room before any drug administration.
BMI: Body Mass Index; COPD: chronic obstructive pulmonary disease;
EF: ejection fraction; EDV: end-diastolic volume.