Definitions Flashcards
OBSTETRICS
A branch of medicine that specialises in the care of women during pregnancy and childbirth
GYNECOLOGY
A branch of medicine that specialises in diagnosis and treatment of diseases of the female reproductive system
GRAVIDA
The total number of pregnancies including the current one regardless of the outcome
PARITY
The number births that have passed the period of viability(22 weeks)
PRIMIGRAVIDA
A woman who conceives for the first time
MULTIPARA
A woman who has given birth at least once before
PARTURIENT
A woman who is in labour or in the process of delivery is
called a parturient.
LABOUR
A series of events that take place in the genital organs as an
effort to expel the viable products of conception out of the uterus through the vagina into the outer world, accompanied by 2 or more strong uterine contractions within 10 minutes of each other with each lasting more than 20 seconds at regular intervals and with cervical changes.
or
Onset of true labour contractions of 2 or more within 10 minutes, each lasting for 20 seconds with cervical changes (dilation, effacement,show)
EARLY LABOUR
From onset of regular uterine contractions to 4cm cervical dilatation.
ACTIVE LABOUR
From 4 cm cervix dilatation till complete expulsion of the baby.
1ST STAGE OF LABOUR
- From onset of regular contractions until complete dilatation of cervix
- average duration of first stage of labour is 12 hours in primigravida & 6 hours in multigravida.
2ND STAGE OF LABOUR
- starts from full cervical dilation to delivery of the baby
- average duration ONE HOUR in primigravida & 30 minutes in multigravida
3RD STAGE OF LABOUR
- starts from delivery of the baby to expulsion of placenta and membranes and contraction & retraction of the uterus
- its duration is usually 5-15 minutes.
4TH STAGE OF LABOUR
- it is stage of observation after third stage for one hour to detect any post- delivery problems , which are more likely within a short duration after delivery
MECHANISM OF LABOUR
the various movements that the fetus goes through while negotiating the birth canal during labour
- cardinal movements of fetus during delivery
- engagement → descent → flexion → internal rotation (to OA position ideally) → extension (delivery of head) → restitution → external rotation (head rotates in line with shoulders) → expulsion (delivery of shoulders and body).
QUICKENING
The first perception of fetal movements by the pregnant mother.
ATTITUDE
relationship of fetal parts to one another
LIE
relation between longitudinal axis to the spine of the mother
PRESENTATION
part of the fetus that occupies the lower pole of uterus.
PRESENTING PART
part of presentation overlying the internal os.
DENOMINATOR
A bony fixed point on the presenting part which comes in
relation with various quadrants of maternal pelvis.
POSITION
Relation of denominator to different quadrants of the pelvis.
STATION
Descent of foetal presenting part in the pelvis. Distance between
the leading bony portion to the interspinous line.
PROM (Premature rupture of membrane)
Spontaneous rupture of
membrane, beyond 37th week of pregnancy but before onset of labour,
without labour pain, contractions or cervical changes.
PPROM (Preterm premature rupture of membrane)
Rupture of
membrane prior to 37th week of gestation.
ABORTION
Expulsion or extraction of an embryo or a fetus weighing
500g or less when it is not capable of independent survival.