Nomogram of Fang et al for Predicting Prolonged Stay in the Post-Anesthesia Care Unit After Elective Surgery

Description

Fang et al reported a nomogram for predicting prolonged stay in the post-anesthesia care unit (PACU) following an elective surgery. The authors are from Zhejiang University, Ningbo Women and Children's Hospital, Shulan Hangzhou Hospital, and Yale University.

Patient selection: elective surgery

Prolonged PACU stay was defined as a stay greater than the third quartile.

Parameters:

(1) blood transfusion

(2) naloxone

(3) pain

(4) delirium

(5) chill

(6) PLOD (prolonged length of operation duration)

(7) level of surgery

(8) ASA status

(9) body mass index (BMI) in kg per square meter

(10) age in years

Parameter	Finding	Points
blood transfusion	no	0
	yes	0.324
naloxone	no	0
	yes	1.974
pain	no	0
	yes	0.965
delirium	no	0
	yes	1.903
chill	no	0
	yes	0.726
operation duration	< 110 minutes	0
	>= 110 minutes	0.556
level of surgery	minor	0
	moderate	0.949
	major	1.77
ASA status	ASA 1	0
	ASA 2	0.442
	ASA 3	0.849
	ASA 4	2.053
BMI	< 21 kg per sq m	0.265
	>= 21 kg per sq m	0
age	< 55 years	0
	>= 55 years	0.832

total score =

= SUM(points for all of the parameters)

Interpretation:

• minimum score: 0

• maximum score: 11.367

value of X =

= (1.004 * (score)) - 3.772

risk of prolonged length of stay in PACU =

= 1 / (1 +EXP((-1) * X))

Performance:

• The area under the ROC curve is 0.78 in the development and 0.76 in the validation cohorts.

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Nomogram of Fang et al for Predicting Prolonged Stay in the Post-Anesthesia Care Unit After Elective Surgery

Description

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