In the second trimester, all women under the
age of 35 should be offered a triple screen test. This is also sometimes called
“multiple marker screening” and “AFP plus.” During the test, the mother’s blood
is tested for three substances. These are:
·AFP, which is a
protein produced by the fetus
·hCG, which is a
hormone that’s produced in the placenta
·estriol, which is a
type of estrogen produced by both placenta and fetus
Ultrasound with a method called the “maximum
vertical pocket.”
Tests for 3rd Trimester of
pregnancy
vGroup B Streptococcus Screening
vUltra sound
vTarget scan
vSTI Tests
vDuring the third trimester, your doctor might
also check for sexually transmitted infections (STIs). Depending on your risk
factors, your doctor might test for:
The U.S. Public Health Service
recommends that all women of childbearing age consume 400 micrograms (0.4 mg)
of folic acid each day. Folic acid, a nutrient found in some green leafy
vegetables, most berries, nuts, beans, citrus fruits, fortified breakfast
cereals, and some vitamin supplements can help reduce the risk for birth
defects of the brain and spinal cord (called neural tube defects). The most
common neural tube defect is spina bifida, in which the vertebrae do not fuse
together properly, causing the spinal cord to be exposed. This can lead to
varying degrees of paralysis, incontinence, and sometimes mental retardation.
Folic acid is most beneficial during the first 28 days after conception, when
most neural tube defects occur. Unfortunately, many women do not realize they
are pregnant before 28 days. Therefore, folic acid intake should begin prior to
conception and continue through pregnancy. Your healthcare provider or midwife
will recommend the appropriate amount of folic acid to meet your individual
needs.
Most healthcare providers or midwives will prescribe a prenatal supplement
before conception, or shortly afterward, to ensure all of the woman's
nutritional needs are met. However, a prenatal supplement does not replace a
healthy diet.
Exercise during Pregnancy
Regular exercise, with the approval of
your physician or midwife, can often help to minimize the physical discomforts
of pregnancy and help with the recovery after the baby is born. There is
evidence that physical activity may be especially beneficial for women with
gestational diabetes.
According to the American College of Obstetricians and Gynecologists, women who
exercised and were physically fit before pregnancy can safely continue
exercising throughout pregnancy. Women who were inactive before pregnancy or
who have medical or pregnancy complications should consult with their physician
or midwife before beginning any exercise during pregnancy.
All women should be evaluated by their
physician or midwife before beginning or continuing an exercise program during
pregnancy.
Exercise may not be safe if the pregnant woman has any of the following
conditions:
The
first trimester lasts for the first 12 weeks of the pregnancy and is crucial
for the baby's development. At conception, the egg and sperm combine to form a
zygote, which will implant in the uterine wall.
The
zygote becomes an embryo as the cells divide and grow. All of the major organs
and structures begin to form.
At
4–5 weeks, the embryo is only 0.04 inches long but will grow to around 3 inches
long by the end of the first trimester. The embryo is now looking a lot more
like a human baby.
The
fetus's heart rate can be heard as early as 8 weeks on a doppler in the
doctor's office, but more likely closer to 12 weeks. During the eighth week the
eyelids remain closed to protect its eyes. The fetus can also make a fist at
this stage. Also, external genitalia will have formed and may be visible during
an ultrasound, meaning that a doctor can tell
someone whether the fetus is male or female.
A
woman will experience many changes during the first trimester, too. Many women
will start to feel morning sickness, or nausea and vomiting due
to pregnancy, at 6–8 weeks.
Despite
its name, this nausea does not just occur in the morning. Some pregnant women
get sick at night, while others are sick all day.
A
pregnant woman might also feel very tired and notice that she is more emotional
than usual due to hormonal changes.
Many
also report experiencing food cravings or aversions during early pregnancy,
alongside a stronger sense of smell. Breast tenderness is also very common.
The
second trimester lasts between week 13 and 26 of pregnancy. The fetus will go
through a lot of changes during this time and grow from approximately 4–5
inches long to around 12 inches long.
During
the second trimester, the fetus will also go from weighing about 3 ounces to
weighing 1 pound (lb) or more.
In addition
to the major structures and organs, other important parts of the body will also
form during the second trimester, including:
the skeleton
muscle
tissue
skin
eyebrows
eyelashes
fingernails
and toenails
blood cells
taste buds
footprints
and fingerprints
hair
If
the fetus is male, the testes begin to drop into the scrotum. If the fetus is
female, the ovaries begin to form eggs.
The
fetus now has regular sleeping and waking patterns. They can also hear sounds
from outside the womb, and they will begin to practice swallowing, which is an
important skill after delivery.
The
woman will also likely begin to feel better. In most cases, morning sickness
and fatigue start
to go away at the beginning of the second trimester. Food cravings and
aversions can continue, however.
A
woman may notice that her belly is starting to grow and that she is beginning
to "look pregnant." She should also start to feel the
baby moving, which is called "quickening."
Braxton–Hicks
contractions may start toward the end of the second trimester.
A
woman may also begin to experience other symptoms in the second trimester,
including:
Share on PinterestDuring
the third trimester, a growing fetus will move more regularly.
The third trimester lasts from week 27 until delivery, which is
usually around week 40. During this trimester, a developing baby will grow from
around 12 inches long and 1.5 lbs in weight to about 18–20 inches long and 7–8
lbs in weight.
Most of the organs and body systems have formed by now, but they
will continue to grow and mature during the third trimester.
The fetus's lungs are not fully formed at the beginning of this
trimester, but they will be by the time of delivery.
A growing baby will start practicing breathing motions to help
prepare for life after birth. Kicks and rolls become stronger, and a pregnant
woman should feel the baby move regularly.
A pregnant woman may also begin to feel uncomfortable during
this trimester, as her belly starts to grow. Most women start to feel
Braxton–Hicks contractions getting stronger, and they may have back pain from carrying a heavy belly.
Other symptoms that a pregnant woman may experience during the
third trimester include:
·Motor neuron diseases are a group of conditions
that cause the nerves in the spine and brain to lose function over time. They
are a rare but severe form of neurodegenerative disease.Motor neurons are nerve
cells that send electrical output signals to the muscles, affecting the
muscles' ability to function.
·Motor neuron disease (MND) can appear at any
age, but symptoms usually appear after the age of 40 years.
It affects more men than women.
·The most common type of MND, amyotrophic lateral sclerosis (ALS),
probably affects up to 30,000 Americans
at any given time, with over 5,600 diagnoses each year, according to the ALS
Association.
·The
renowned English physicist Stephen Hawking lived with ALS for many decades
until his death in March 2018. Guitar virtuoso Jason Becker is another example
of someone who has been living with ALS for several years.
·There are several types of
MND. Doctors classify them according to whether they are hereditary or not, and
which neurons they affect.
·ALS, or Lou Gehrig's disease, is the most common
type, affecting both the upper and lower motor neurons (neurons in the brain
and spinal cord). It affects the muscles of the arms, legs, mouth, and
respiratory system. A person with ALS will live, on average, another 3–5 years, but,
with supportive care, some people live 10 years or more.
·Primary lateral sclerosis affects the
neurons in the brain. It is a rare form of
MND that advances more slowly than ALS. It is not fatal, but it can affect a
person's quality of life. Juvenile primary lateral sclerosis can affect
children.
·Progressive bulbar palsy (PBP) involves the
brain stem. People with ALS often have PBP too. The condition causes frequent
choking spells, difficulty speaking, eating, and swallowing.
·Progressive muscular atrophy (PMA) is a rare
condition that affects the lower motor neurons in the spinal cord. It causes
slow but progressive muscle wasting, especially in the arms, legs, and mouth.
·Spinal muscular atrophy (SMA) is an
inherited MND that affects children. There are three types, all caused by a
genetic change known as SMA1. It tends to affect the trunk, legs, and arms. The
long-term outlook depends on the type.
·The different types of MND share similar
symptoms, but they progress at different speeds and vary in severity. Symptoms
·MND has three stages — early, middle, and
advanced.
·Early
stage signs and symptoms
·In the early stage, symptoms develop slowly and
can resemble those of other conditions. The symptoms will depend on the type of
MND a person has and which part of the body it affects.
·Typical symptoms begin
in one of the following areas:
the arms
and legs
the mouth
the
respiratory system
·They include:
a weakening
grip, which makes it hard to pick up and hold things
inappropriate
emotional responses, such as laughing or crying
weight
loss, as muscles lose their mass
·Middle
stage signs and symptoms
condition progresses, the early symptoms remain
and become more severe.
·People may also experience:
muscle
shrinkage
difficulty
moving
joint pain
drooling
due to problems with swallowing
uncontrollable
yawning, which can lead to jaw pain
changes in
personality and emotional state
difficulty
breathing
·Studies suggest that up to 50% of
people with ALS may experience brain involvement, including memory and language
problems. Around 12–15% of people with ALS may develop dementia.
·Motor neurons instruct the muscles to move by
sending signals from the brain. They play a role in both conscious and
automatic movements, such as swallowing and breathing.
·Experts believe that around 10% of
MNDs are hereditary. The other 90% happen randomly.
·MNDs can occur in adults or children, depending
on the type. They are more likely to affect men than women. Inherited forms of
the condition may be present at birth. They are most likely to appear after the
age of 40 years.
·The various types may have different risk
factors. SMA is always hereditary, but this is not true for all forms of MND.
·According to NINDS, around 10% of
ALS cases in the United States are hereditary. It is most likely to appear at
the age of 55–75 years.
·They also note that veterans appear to have a
1.5–2 times higher chance of developing ALS than non-veterans. This may
indicate that exposure to certain toxins increases the risk of having ALS.
·A 2012 study found
that footballers have a higher risk of dying from ALS, Alzheimer's disease, and other
neurodegenerative diseases, compared with other people. Experts think that this
could indicate a link with recurrent head trauma.
·Doctors often find it difficult to diagnose MND
in the early stages as it can resemble other conditions, such as multiple sclerosis (MS).
·If a doctor suspects someone has MND, they will
refer them to a neurologist, who will take a medical history, do a thorough
examination, and may suggest other tests, such as:
·Blood and urine tests: These can help a doctor
rule out other conditions and detect any rise in creatinine kinase, a substance
that muscles produce when they break down.
·MRI brain scan: An MRI cannot detect an MND, but it can help
rule out other conditions, such as stroke, brain tumor, or unusual brain structures.
·Electromyography (EMG) and nerve conduction study (NCS):
An EMG tests the amount of electrical activity within muscles, while a NCS
tests the speed at which electricity moves through muscles.
·Spinal tap, or lumbar puncture: A doctor will
look for changes in the cerebrospinal fluid, which surrounds the brain and
spinal cord. It can help rule out other conditions.
·Muscle biopsy: This can help detect or rule out a
muscle disease.
·The doctor will normally monitor the individual
for some time after the tests before confirming that they have MND.
There is no cure for MND, but treatment may slow
progression and maximize the individual's independence and comfort.
·Techniques include the use of supportive devices
and physical therapy.
·The correct choice will depend on factors such
as:
the type of
MND a person has
the type
and severity of symptoms
personal
choice
the
availability and affordability of drugs
·Slowing
disease progression
·Drugs appear to be effective at slowing the
progress of some types of MND.
·For example, the Food and Drug Administration
(FDA) have approved Radicava (Edaravone)
for the treatment of ALS and Spinraza and Zolgensma to
treat SMA.
·Muscle
cramps and stiffness
·Medications, such as botulinum toxin (Botox)
injections. Botox blocks the signals from the brain
to the stiff muscles for about 3 months.
·Baclofen, a muscle relaxer, may help relieve
muscle stiffness, spasms, and yawning. A doctor can surgically implant a small
pump outside the body to deliver regular doses to the space around the spinal
cord, from where it can reach the nervous system.
·Some people may find physical therapy helps
alleviate cramps and stiffness.
