Title: Analysis of mortality Perinatal II
r correlation between weeks of amenorrhoea and
weight of newborn.
Pizarro , A: Department of
Pathology. Hospital General SSA
Díaz, R: Department of Pathology. Hospital
Contact Person: Alberto
G Pizarro (email@example.com)
A retrospective clinical study
of all the II perinatal deaths from Hospital
General SSA de Tepic Nayarit, Mexico ocurring
from January 1990 to December of 1997. All the
deaths of 1990 to 1997 were registered in
specific questionnaires of mortality. Our alone
study were included all the cases with clinical
complete registrations and certificate of death.
We attempted to arrive at an apparent cause for
each death after evaluation obstetric history,
maternal medical illnesses, laboratory tests,
autopsy findings, and placental pathologic
findings. A stillbirth was defined by an
estimated gestational age >20 weeks'
gestational age or fetal weight >500 gm.
Epidemiology department of my
institution during the years 1990 to 1997 was
undertaken to study the relationship between
birthweight and amenorrhoea.
Patients were stratified as
fetal o neonatal deaths.Information was obtained
by review of medical records.(b) Univariate
analyses of potential risk factors, only six
factors remained significantly associated with II
The causes of fetal deaths were
analysed on the basis of maternal complications
and pathologic findings.
The deaths selectionated was
captured the following variables: [Number(n)]
1.- weeks´gestational age or
2.- Maternal age. (n)
3. Paridity (n).
4.- Low maternal education.
(< six years)
5.- prenatal care consultation
(n). ( < 5 )
6.- Route of delivery. (
vaginal, cesarean, prematurely ruptured
7.- Maternal disease
associates: pregnancy loss, toxemia,
hypertension, diabetes, anemia, hyperemesis,
ectopic pregnancy, infection.
8. birth Weigh (n) (Kg.)
9.- Fetal or neonatal death. (F
10. Sex. (F or M)
11. Lenght of stay in hospital.
12.- Primary cause of death.
(Diagnosis or undiagnosis)
13.- secondary Diagnosis.
14.- professional Risk. (yes or
14. Placenta pathology:
abruptio placentae, infarcts, toxemia, placenta
15. Cord pathology: umbilical
knots, loops, torsion and constriction, umbilical
prolapse and velamentous insertion.
16. Congenital anomalies.
The data were captured 97 in
software of Microsoft Access and Excel 97. The
statistical analysis corresponded descriptive
statisticses (avaluating chi square and Student t
test) of all the variables and to the r
correlation and lineal regression of amenorrhoea
The r correlation coefficient
between amenorrhoea and weight in fetuses and
neonatos of the II perinatal mortality is strong
ro: r1-r2= 0
r1: r1-r2= <> 0 alpha:
coefficient of confiance : 95%
Statistical study: r
correlation and lineal regression.
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