Wang et al reported a nomogram for predicting postoperative hyperlactatemia following cardiac surgery. This can help to recognize a patient who may require more aggressive management. The authors are from multiple institutions in Wuhan, China.
Patient selection: elective cardiac surgery
Parameters:
(1) age in years, from 15 to 85
(2) renal insufficiency
(3) history of previous cardiac surgery
(4) left ventricular ejection fraction (LVEF) in percent, from 25 to 80 percent
points for age =
= (1.4286 * (age)) - 21.4286
points for LVEF =
= 133.3818 - (1.6673 * (percent))
Parameter
Finding
Points
renal insufficiency
no
0
yes
34.65
previous cardiac surgery
no
0
yes
48.51
total score =
= SUM(points for all of the parameters)
Interpretation:
• minimum score: 0
• maximum score: 274.84
value of X =
= (0.02772 * (score)) - 4.841
probability of hyperlactatemia =
= 1 / ( 1 + EXP((-1) * X))
To read more or access our algorithms and calculators, please log in or register.
