Generations Flashcards
Eclampsia
Eclampsia
This fit begins with restlessness, the face twitches and the eyes roll. This stage is followed by a tonic phase where the body goes completely rigid, the jaw is clenched, the head thrown back, the eyes turn up and the back arches. Due to the spasm of the respiratory muscles, respiration is stopped.
The tonic stage is followed by rapid convulsions that affect the whole body. The convulsions usually only last two or three minutes, after which the patient will subside into coma. Due to the fact that the patient is unconscious during the fit they may be incontinent.
During the fit, the patient should be prevented from hurting themselves, not by restraint, but by guiding the limbs and head away from harmful objects. The patient should not be moved during this time, although this may be necessary if danger is imminent.
Once the convulsive stage is over the patient must be kept warm, quiet and away from bright lights, as these things can provoke another fit.
The patient should only be moved on the authority of a doctor. If this is not possible, then movement should be extremely careful and not rushed. Oxygen therapy can be administered if available
Postpartum haemorrhage
what is it
Postpartum haemorrhage
This excessive bleeding, up to 24 hours after the birth, can vary from patient to patient and from as much as half a litre in a large woman to just a little from a smaller woman. In any event the outcome will be signs of shock and eventual collapse.
Bleeding after this time is known as secondary postpartum haemorrhage.
Normal bleeding is controlled by the contractions and retraction of the uterine muscles, coupled with contractions of the arteries themselves, clotting of blood in torn vessels and opposition of the anterior and posterior walls of the uterus.
It is only when these natural processes are hindered, eg not all the placenta has been expelled from the uterus, that postpartum haemorrhage occurs.
What kinds of haemorrhage can happen with pregnancy
Accidental haemorrhage
This usually occurs as a result of toxaemia, but can be caused by strenuous exercise, stress or falling. It is more common in hypertensive (high blood pressure) patients and in multiparae (those who have had more than one pregnancy).
It can be divided into three main types:
Revealed haemorrhage
This is when all the blood passes via the vagina - it is the least dangerous type.
Concealed haemorrhage
This is the most dangerous condition, the only symptoms being sudden severe pain, shock and collapse. The womb is very hard and tender, there is no vaginal bleeding and the pulse is thready and rapid.
Combined haemorrhage
This is bleeding that starts out as concealed, but later becomes revealed. This too is a very serious cond
Unavoidable haemorrhage
Sometimes called placenta praevia and exists when the placenta develops in the lower uterine segment, partially covering the internal os.
As the lower uterine segment stretches in the later weeks, the placenta is prematurely separated from the uterine wall.
There is no pain and the only symptom is vaginal bleeding and a history of bleeding during pregnancy
ition
Abortion
Sometimes called miscarriage, abortion is the termination of the pregnancy before the 24th week of development. It can be threatened, incomplete or complete abortion.
The actual haemorrhage of an abortion usually stems from the decidua but ends up as revealed haemorrhage via the vagina
How does the female reproductive system work
Fallopian tubes
Fallopian tubes
There are two fallopian tubes extending from either side of the uterus. They are around 10cm long and lie in the upper margin of the broad ligament. The outer end of each tube is trumpet like and enters the peritoneal cavity where the fimbrae on the end surround the ovaries. The fimbrae collect the ovum as it is released from the ovary.
The tubes have muscular walls continuous with that of the uterus. The outer coat is of peritoneum and the inner is of ciliated epithelium. The cilia wave back and forth in order to move the ovum along the length of the tube until it reaches the uterus.
The fertilisation of the ovum with spermatozoa usually takes place within the fallopian tubes
How does the female reproductive system work
Uterus
Uterus
The uterus is a pear-shaped organ that is approximately 8cm long and 5cm wide. The organ lies between the bladder and the rectum. The uterus receives its blood supply from the following arteries:
Ovarian arteries - branches off the abdominal aorta
Uterine arteries - branches off the internal iliac artery
The accompanying veins drain back into the inferior vena cava.
Although the uterus does receive some stimulus from the sympathetic nervous system, its own individual stimulus means that it can contract totally independently of both spinal and sympathetic systems.
The uterus has several major functions:
To receive fertilised ovum and retain and nourish the foetus throughout pregnancy
To expel the foetus at full term by muscle contraction
To play a part in menstruation
How does the female reproductive system work
Vagina
Vagina
This is the canal that leads downwards and forwards from the cervix to its lower orifice in the vulva. It is lined by a thin type of skin that is thrown into a number of folds and is kept moist by the secretion of the mucous glands that are present in the cervix.
This secretion is slightly acid due to lactic acid.
How does the female reproductive system work
Ovaries
Ovaries
There are two ovaries, one attached to the posterior aspect of the broad ligament on either side of the uterus. They lie directly below each fallopian tube, as they form an arch over them. The ovary can be described as having a medulla in the centre, mainly of fibrous tissue, a cortex of epithelium, and a number of cystic sacks called graafian follicles. These contain the ova surrounded by a little fluid.
The graafian follicle gradually works its way to the surface of the ovary where it ruptures. After it has ruptured, the ovum is released into the peritoneal cavity , but is almost immediately captured by the fimbrae of the fallopian tubes. Fimbrae are fringe-like processes that surround the ovary. The ruptured graafian follicle then develops into a solid yellowish body called the corpus luteum, which is responsible for the secretion of progesterone.
If the ovum is fertilised, the corpus luteum continues to develop throughout the duration of the pregnancy.
Progesterone is responsible for sensitising the mucous membrane of the uterus in preparation for the reception of the fertilised ovum and also for restricting the growth of further graafian follicles during the pregnancy. If the ovum is not fertilised the corpus luteum continues to develop only until the next menstrual period, when it gradually disappears to be replaced by fibrous tissue.
The graafian follicles secrete oestrogen, which plays an important part in the regulation of menstruation
What should I know about child birth?
Child birth or labour can be divided into three stages:
Malpresentation
Both right and left-occipito posterior, although still head-down positions, are classed as malpresentations, as more rotation of the baby is required to achieve a delivery and therefore complications may occur.
The most common is a delay in the second stage of labour
Foetal presentations
There are several ways that a baby can present itself
Normal presentation
The normal presentation, left-occipito anterior, or first vertex has the head as the presenting part, this is the most common presentation.
Right-occipito anterior is also considered to be a normal presentation
What should I know about child birth?
Breech Presentation
Breech presentation
Breech presentations occur when the baby has its buttocks instead of its head as the presenting part.
A complete breech means the baby has its knees bent.
A frank breech means that the baby’s legs are straight, doubled back to its head.
A prolapsed leg or knee can accompany a breech.
What should I know about child birth
Face presentation
Face presentation
A face presentation is a head-down presentation but it is the face that presents instead of the occipital bone.
Persistent mento-posterior is again a head-down presentation, but the baby’s chin lodges in the hollow of the maternal sacrum , therefore the head cannot be fully extended making a normal birth impossible.
What should I know about child birth
Brow presentation
Brow presentation
A brow presentation occurs when the head is in such a position that the widest diameter of the skull is presented as the baby enters the pelvic brim, a normal birth is most unlikely.
What should I know about child birth
Transverse lie presentation
Transverse lie
A transverse lie can be diagnosed by abdominal examination, as the uterus is very irregular.
There is no presenting part and early rupture of the membrane will occur, resulting in the impossibility of spontaneous delivery.
A prolapsed arm can also accompany a transverse lie, whereas a prolapsed leg or knee can accompany a breech.
umbilical cord prolapse
An umbilical cord prolapse may accompany any presentation and this is a dire emergency for the baby. A loop of umbilical cord will be visible at the entrance to the vagina. It is important to handle this as little as possible to reduce the possibility of spasm of the cord. The loop should be covered in a warm moist sterile dressing and re-inserted into the vagina. The mother should be placed in the left lateral position and urgently transported to hospital.
There are two more things to be aware of:
There are two more things to be aware of:
Obstetric shock, which is a condition of collapse that can follow a difficult delivery or haemorrhage
Eclampsia. This can occur in the last stage of pregnancy, in labour, or after the actual delivery. It is potentially life threatening for both mother and baby and takes the form of a fit followed by coma.