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Prognostic Score of Bahamondes et al for the Infertile Couple

Purpose: To estimate the probability of a couple achieving pregnancy within 3 years of initial evaluation using the equation of Bahamondes et al.

Description

Bahamondes et al developed a prognostic score for the infertile couple, giving the probability of conception within 3 years of initial evaluation. The intent was to give the couple an accurate estimate of their chances to conceive, thereby reducing the dropout rate due to discouragement. The study was performed in Cordoba, Argentina; the authors are from Campinas, Brazil.


Parameters for score:

(1) type of infertility

(2) history of pelvic surgery in the woman

(3) normalcy of the woman's menstrual cycle

(4) age of the woman in years

(5) duration of infertility

(6) normal sperm morphology

 

Parameter

Finding

Points

type of infertility

primary

0

 

secondary

1

history of pelvic surgery in the woman

absent

0

 

present

1

menstrual cycle

normal

0

 

abnormal

1

age of the woman

 

age in years

duration of infertility

 

duration in years

percent of normal sperm in sperm morphology

 

percent as whole number from 0 to 100

 

Y =

= 0.0822 + (0.0836 * (percent for sperm morphology)) - (0.1075 * (woman's age in years)) + (0.8971 * (points for type of infertility)) - (0.1623 * (duration of infertility)) - (0.9775 * (points for pelvic surgery)) + (0.8554 * (points for menstrual cycle))

 

probability of fertility within 36 months of the initial visit =

= EXP(Y) / (1 + EXP(Y))

 

Interpretation:

• The best prognosis is for the couple with a high percent normal sperm in the male, a young age for the woman, secondary infertility, few years of infertility, no history of pelvic surgery and abnormal menstrual cycles.


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Specialty

Objective

ICD-10