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. Author manuscript; available in PMC: 2019 Aug 14.
Published in final edited form as: Eur Urol. 2011 Dec 2;61(3):593–599. doi: 10.1016/j.eururo.2011.11.040

Table 2 –

Perioperative characteristics of partial nephrectomies for 4–7 cm renal cortical tumors

OPN MIPN P
n = 226 % n = 54 %
Median estimated blood loss, ml, median (IQR) 400 (200–600) - 300 (144–438) - 0.03
Transfusion 33 15 3 6 0.1
Renal artery clamped 184 81 50 93 0.06
Renal artery clamp time, min, median (IQR) 42 (35–50) - 37 (31–41) - 0.006
Hypothermic ischemia 177 78 4 7 <0.001
Conversion
 To open - - 3 6
 To radical 27 12 4 7 0.5
Length of stay, d, median (IQR) 4 (3–5) - 3 (2–5) - 0.007
6-mo eGFR, ml/min per 1.73 m2, median (IQR) 55 (43–65) 56 (51–74) 0.1
6-mo eGFR change in baseline, ml/min per 1.73 m2, median (IQR) −10 (−18 to −0.8) - −5 (−13 to +4) - 0.5

OPN = open partial nephrectomy, MIPN = minimally invasive partial nephrectomy, IQR = interquartile range, eGFR = estimated glomerular filtration rate.