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Model of Hartmann et al for Hypotension Following Spinal Anesthesia Induction

Purpose: To estimate the risk of hypotension following the induction of spinal anesthesia using the model of Hartmann et al.

Description

Hartmann et al developed a model for predicting hypotension following spinal anesthesia induction. This can help identify patients who should undergo closer monitoring and early intervention. The authors are from Justus-Liebig University in Giessen, Germany.


Parameters identified on logistic regression analysis:

(1) chronic alcohol consumption

(2) history of hypertension

(3) body mass index (BMI)

(4) spinal level of sensory block

(5) urgent surgery

 

Parameter

Finding

Points

chronic alcohol consumption

no

0

 

yes

1

history of hypertension

no

0

 

yes

1

BMI

 

sensory block

below T6

0

 

at or above T6

1

urgent surgery

no

0

 

yes

1

 

X =

= (1.114 * (points for chronic alcohol consumption)) + (0.791 * (points for hypertension)) + (0.078 * (BMI)) + (0.841 * (points for sensory block)) + (1.044 * (points for urgent surgery)) - 6.339

 

probability of hypotension =

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


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Specialty

Objective

ICD-10