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Welcome to this module in which we will be discussing obstetrics and gynecology.
Upon completion of this module, you should be able to: Define terms associated with female
reproductive anatomy; define terms associated with the process of labor; discuss cultural
values affecting pregnancy; identify special considerations of adolescent pregnancy; summarize
the normal physiology of pregnancy; list and describe signs and stages of labor; list components
of assessment for an obstetrical patient; identify the contents of an obstetrics kit;
state indications of an imminent delivery; list steps for a normal delivery; discuss
initial care of the newborn; summarize neonatal resuscitation procedures; describe complications
of pregnancy, labor, delivery, and postpartum; discuss gynecological emergencies; and, describe
the age-related variations for pediatric and geriatric assessment and management of the
female patient. You should also be able to appreciate the
emotions that a sexual assault victim may be experiencing.
Lastly, as a portion of a subsequent classroom lab, you should be able to: Demonstrate the
steps to assist in the normal delivery of a baby; demonstrate the steps to assist in
complicated deliveries; demonstrate infant neonatal procedures; demonstrate post-delivery
care of an infant; demonstrate the post-delivery care of the mother; demonstrate the steps
in management of the mother with excessive bleeding; and, demonstrate completing a prehospital
care report for patients with obstetrical or gynecological emergencies.
A women�s external genitalia, referred to as the vulva, consists of four major structures:
the labia minora, labia majora, clitoris, and vaginal vestibule or orifice.
The labia minora consists of two thin inner folds of skin within the vestibule of the
vagina. The labia majora is comprised of the outer
folds of skin and adipose tissue surrounding the vaginal opening; this structure defines
the lateral boundaries, if you will, of the external female genitalia.
The clitoris is a small, elongated erectile organ located anteriorly on the vulva.
The vaginal vestibule or orifice is the opening to the vagina. The opening is protected by
the labia minor and majora. These structures are all contained within
an area known as the perineum. The perineum is a diamond-shaped area corresponding to
the outlet of the pelvis. Both men and women have a perineum. In women, the area encompasses
the vulva as well as the anus. It is bounded by the coccyx posterior, the pubic arch anterior,
and the inside of the thighs laterally. Also located within this are is the urethra,
a membranous tube that extends from the urinary bladder to the exterior of the body for the
voiding of urine. Moving to the internal female reproductive
organs, the uterus is a muscular, hollow organ located along the midline in most women�s
lower abdominal quadrants. The organ is designed for implantation of a fertilized egg where
it can develop into a fetus. During the final stages of pregnancy, the uterus is also responsible
for labor and muscular contractions for expulsion of the baby.
Ovaries are small, round organs located on either side of most women�s lower abdominal
quadrants. These organs are responsible for producing ova (eggs) for conception. The ovaries
also produce many of the hormones necessary for the process of reproduction.
The ovaries and uterus are connected via fallopian tubes. When an egg is released from an ovary,
it travels down the fallopian tube into the uterus. If fertilization of an egg occurs,
it commonly does so while in a fallopian tube. In a normal pregnancy, the fertilized egg
will continue its journey down the fallopian tube into the uterus for implantation and
continued development. Given a pregnancy, the woman is carrying a
fetus and other supportive structures. The fetus is simply the developing baby within
the uterus. At eight weeks of development, the fetal stage officially begins. From that
point, until delivery, the developing baby is referred to as a fetus.
The placenta is attached to the wall of the uterus and exchanges oxygen, nutrients, and
wastes between the mother and the fetus through the umbilical cord.
The umbilical cord contains blood vessels that carry blood containing oxygen and nutrients
to the baby, as well as vessels that transport blood with fetal waste products back to the
placenta and the mother. Some additional terms and definitions as they
relate to labor and delivery are as follows: Labor is the process of having (or delivering)
a baby. While various resources define labor as consisting of either three or four stages,
it is commonly held to begin with the first uterine muscle contraction and it ends once
the placenta is expelled from the woman. Bloody show is mucus and blood that may be
expelled from the vagina as labor begins. Presenting part is the body part of the baby
that exits the labor canal first. While this is commonly the head, given a typical delivery,
it can also be an arm, leg, or buttocks. Crowning is the appearance of the fetal scalp
at the vaginal orifice during delivery. Spontaneous abortion, also known as a miscarriage,
is the delivery of the product of conception early in pregnancy (before the 20th week).
While EMS providers must be culturally sensitive in all patient interactions, calls involving
obstetrics and gynecology are even more critical in this regard. Women in all cultures have
a value system that will affect their pregnancy. This can include how the woman cares for herself
during the pregnancy as well as how they have planned the childbirth process. In some cultures,
for instance, it is not permissible for the woman to have a male healthcare provider assisting
in the delivery. These cultural differences may also involve social, psychological, and
emotional factors. In some cultures, being pregnant is associated with achieving status
and recognition within their family unit. For some women, on the other hand, being pregnant
results in a lower self-esteem. As an EMS provider, respect these differences and honor
the patient�s requests, remembering that any competent adult has the legal right to
refuse any part of assessment or care. Adolescent pregnancy is rampant in the United
States with UNICEF reporting in 2001 a birth rate of 52.1 per 1,000, the highest in the
developed world and more than twice the European average. As of 2011, the CDC has reported
a teen birth rate of 31.3. While this rate has decreased over the course of 10 years,
the CDC also recognizes a tremendous disparity in teen birth rates between racial and ethnic
groups with rates anywhere from approximately 10 to 50 per 1,000 based upon the race or
ethnicity of the group. In many instances, socioeconomic factors seem to be involved
and one reason why teen pregnancy is deemed socially undesirable is illustrated by the
CDC statistic that one-half of pregnant teenagers do not finish high school. The trickle-down
effect of that is an inability for the mother to find employment and earn a livable wage
without that basic level of education. Regardless the factors surrounding a teenage pregnancy,
the EMS provider assessing a pregnant teenage female must be professional and non-judgmental
at all times. Depending on the age of the patient, providing care may be complicated
by the level of physical and psychological maturity and development of the patient. Additionally,
a pregnant minor is still a minor, meaning that her parents may still have the legal
authority to authorize or decline healthcare for her. (Remember from the legal module of
this course that Wisconsin does not commonly recognize emancipated minors as other states
do.) It can also be common, depending on how long the patient has been pregnant, for her
to not know about the pregnancy, to be in denial about the pregnancy, or to have not
told her parents about the pregnancy. When assessing female patients, especially those
with gastrointestinal or abdominal complaints, always consider the possibility of the patient
being pregnant. Also keep in mind the patient�s need for independence and privacy. If possible,
it may be better for the teenage patient if any assessment is performed or history is
obtained away from her parents. If you have not covered it yet, one of the
modules within this course will discuss the legal obligation of an EMT to report to law
enforcement any suspected child abuse or neglect. This becomes pertinent when discussing adolescent
pregnancies because it is considered sexual abuse of a child in Wisconsin for a person
to have sex with a minor under the age of 16 (meaning 15 years of age or younger). If
the minor is either 16 or 17 years of age, the crime is a misdemeanor that is not considered
sexual abuse of a child and is not subject to the mandatory reporting requirements of
state statute 48 (sections 48.02 and 48.981). If the sex was nonconsensual, it is considered
sexual abuse of a child, regardless of the victim�s age. Remember as well that it takes
time for a pregnancy to show. Just because a pregnant female is 16, 17, or 18 years of
age at the time of an EMS contact does not mean she was that age at conception. The law
also does not consider the age of the individual who had sex with the pregnant female, so just
because the father is also a minor does not necessarily mean a crime did not occur.
If providing care to a pregnant, minor female, it is recommended that the EMT contact law
enforcement to report the incident and law enforcement can then make a determination
as to whether or not the statutory requirements for sexual assault of a minor were met.
For the woman who becomes pregnant, she is about to experience numerous, significant
changes to her body. Her reproductive system begins producing increased
hormones to support fetal development. These hormones will commonly impact the woman�s
emotional status. The respiratory system must begin handling
greater oxygen demand while pressure on the diaphragm from the developing fetus results
in a decreased minute volume. As a result, the mother�s respiratory rate is commonly
faster than it would be if she were not pregnant. The cardiovascular system must meet the demand
for oxygen and other nutrients for the fetus, which results in an increase in both blood
volume as well as the heart rate. The fetus commonly places pressure on the mother�s
vena cava, which can impact the effectiveness of circulation to her lower extremities and
clotting factor changes occur to accommodate the fetus.
The musculoskeletal system must adapt to changes in the woman�s center of gravity given the
addition of a developing fetus, which can result in back pain, leg pain, and fatigue,
especially in the later stages of fetal development. The body also must prepare for the process
of delivery and the joints loosen, especially in the hips, which can cause instability for
the mother. The gastrointestinal system is also impacted
by the pregnancy. Digestion slows, which can lead to nausea and vomiting. The fetus also
places pressure on the bladder and intestines, which results in increased need to urinate
and possible incontinence. For the purposes of providing emergency medicine,
it is important to understand the timeline associated with conception and fetal development
as medical emergencies associated with pregnancy can vary in terms of type and severity over
the duration of a pregnancy. The process begins with ovulation in which
the ovaries discharge an egg. Fertilization occurs if a male sperm is introduced to the
female egg. Once the egg is fertilized, it must then implant itself into the lining of
the uterus. (If this implantation takes place someplace else, an ectopic pregnancy will
result. This type of medical emergency will be discussed a little later in this module.)
The next stage is called the embryonic stage, which is the period of time from fertilization
to about eight weeks afterward. The last stage is the fetal stage, which begins approximately
eight weeks after fertilization (after the embryonic stage) until delivery, approximately
40 weeks after fertilization. Before discussing the delivery of a baby,
the EMT must be able to recognize the signs of labor.
Lightening, also referred to as the baby dropping, is a sensation of pressure caused by the descent
of the uterus into the pelvic cavity. This occurs as the fetus changes position within
the uterus to prepare for delivery. In first-time mothers, this is commonly noticeable a few
weeks prior to delivery. For women who have delivered before, this sensation may not be
noticeable until just prior to delivery. Braxton Hicks contractions are sporadic uterine
contractions that occur during pregnancy. These can start as early as six weeks into
the pregnancy for some women. Typically, most women will not notice them, even if they are
occurring, until sometime in the mid- to late-second trimester. As the delivery date nears, Braxton
Hicks contractions may increase in frequency, becoming rhythmic and relatively close together.
They may also produce pain, which can lead some women to believe they are entering labor.
The difference between Braxton Hicks contractions and true labor contractions is that these
false labor contractions do not grow consistently longer, stronger, and closer together. If
the woman has not reached her 37th week yet and the contractions are becoming more frequent,
rhythmic, or painful, that may be a sign of preterm labor. If the woman is past 36 weeks,
contractions that last longer than a minute and occur within five minutes of each other
for at least an hour may be indicative of the start of labor.
Cervical dilation begins to occur as the woman nears labor. Because the cervix cannot be