My 47 year old aunt Dora considered herself healthy. She is
a non-smoker. Two years ago she felt stabbing pains in her back on the right
side under her ribs cage and the pain got worst every time she took a deep
breath. She was quickly rushed to the ER. The first thought of the ER doctors
was that she had pneumonia for which she was started on antibiotics, even
though she had not been sick with a cold or even a fever. They did take a blood
test to find out whether her symptoms might possible related to blood clot, and
after seven hours in the ER, the test came back positive.
She was then send for a CAT scan, which showed definitely
that she had pulmonary emboli. Multiple blot clot was detected in both her
lungs. She was started on blood thinner injections and stayed in the hospital
for six days.
Further testing reveled a deep vein thrombosis (DVT) in her
left leg behind her knee. On top of this her heart started to race 160/180 for
an hour. It was a super ventricular trachycardia, a fast heart rate she had at
times all her adult life. Of course, rapid heart rate is also a symptom of
pulmonary emboli.
Prior to her DVT and PEs, she flew from Florida to
Washington State where she stayed for four days to help take care of her
mother, so she had a quick turn around between the long coast to coast flights.
She did not notice any swelling, discoloration, or any pain in her leg. A week
later she did feel severe back pain while she was cleaning her house. Suddenly
she was unable to breathe and her heart rate was rapid.
My aunt was also on birth control pills for more than 20
years, but immediately after her DVT and PEs was diagnosed. Apparently the
combination of travel over four hours and birth control pills may have trigger
her clots as it seems that there are a lot of variables that influence blood
clot formation.
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What
Is DVT?
Deep vein thrombosis is a blood clot
that forms inside a vein, usually deep within your leg. The danger is that part
of the clot can break off and travel through your bloodstream. It could get
stuck in your lungs and block blood flow, causing organ damage or death.
Symptoms
Notice how the leg on the left here
is swollen below the knee. That's a common symptom of DVT. So are redness and
tenderness or pain in the area of the clot. But you won't always have these.
Unfortunately, about half of people with DVT get no warning signs.
Pulmonary
Embolism
This is a clot that moves into your
lungs and blocks the blood supply. It can cause trouble breathing, low blood
pressure, fainting, a faster heart rate, chest pain, and coughing up blood. If
you have any of these, call 911 and get medical care right away.
What
Causes DVT?
Anything that damages the inner
lining of a vein may cause DVT -- surgery, an injury, or your immune system. If
your blood is thick or flows slowly, it's more likely to form a clot,
especially in a vein that's already damaged. People who have certain genetic
disorders or more estrogen in their system are more at risk for blood clots,
too.
Who
Is Likely to Get DVT?
Some people with a higher risk are
those who:
- Have cancer
- Have had surgery
- Are on extended bed rest
- Are older
- Smoke
- Are overweight or obese
- Sit for long times, like on a long airplane flight
Pregnancy
Women are more likely to develop DVT
during pregnancy and the 4 to 6 weeks after giving birth. That's when they have
higher levels of estrogen, which may make blood clot more easily. The pressure
of their expanding uterus can slow blood flow in the veins as well. Certain
blood disorders can boost their risk even more.
Hormone
Therapy
Like pregnancy, birth control pills
and some treatments for postmenopausal symptoms raise the amount of estrogen in
a woman's blood. That can increase her risk of DVT, even if she doesn't have a
blood disorder.
Trapped
in Your Seat
Traveling to new and faraway places
can be exciting! Squishing into a coach seat for a long international flight is
not. Studies show long-distance travel, a trip that lasts more than 4 hours,
doubles the risk of developing DVT. It doesn't matter if you go by air, bus,
train, or car. When you're in a cramped seat and don't move around, your blood
flow slows.
Get
a Diagnosis
Your doctor will check you for signs
of DVT. He may also ask about your medical history, medications you're taking,
medical problems of close relatives, and things that put you at risk. An
ultrasound is the most common way to confirm a diagnosis. It uses sound waves
to "see" the blood flow and reveal a clot. You might also need other
tests, such as a blood test called a d-dimer.
Blood
Thinners
Drugs called anticoagulants are the
most common way to treat DVT. Although they're known as blood thinners, they
don't really thin your blood. They make it less "sticky" to prevent
new blood clots from forming. They can't break up a clot you already have, but
they will give your body time to dissolve it on its own. You take these
medications in a pill or by needle.
Side
Effects of Blood Thinners
People who take these may get
bruises often or bleed more easily. When you take certain ones, you'll need to
watch what you eat. And you'll need to go to a lab regularly to get your blood
checked to make sure you've got the right amount of the drug in your body. You
don't have to do that for newer medications, but they make it harder to stop
bleeding if you have an accident.
Let your doctor know if you bleed a
lot from minor injuries.
Internal
Bleeding
Blood thinners can also make it
easier to bleed inside your body, where you can't see it. Bleeding in your belly
can cause pain, vomit that's red or looks like coffee grounds, and bright red
or black stools. Bleeding in your brain can cause severe headaches, vision
changes, unnatural movements, and confusion. Call 911 and go to the emergency
room if you notice any of these symptoms.
Vena
Cava Filter
If you can't take blood thinners or
they aren't working, your doctor may recommend putting a filter into your
biggest vein, called the vena cava. This filter catches breakaway clots and
stops them from getting into your lungs and heart. It won't stop new clots from
forming or cure DVT, but it can help prevent a dangerous pulmonary embolism.
Clot
Busters
Medications that dissolve blood
clots are called thrombolytics. They can cause sudden, severe bleeding, so
doctors use them only in emergencies -- to dissolve a life-threatening blood
clot in your lung, for example. You get thrombolytics by IV in a hospital.
Compression
Stockings
These special socks put gentle
pressure on your legs to keep your blood moving. They can help prevent clots
from forming as well as reduce swelling and relieve discomfort in a leg where a
clot has already formed. You can get compression stockings over the counter,
but your doctor will need to write a prescription for ones with more pressure.
Wear them even at home.
Keep
Your Feet Up
When you can, sit with your feet
resting off the floor to raise your legs. You'll make it easier for the blood
in your veins to flow up toward your heart. This can lessen the swelling and
discomfort in the leg with DVT.
Long-Term
Effects
Once a blood clot is gone, DVT
sometimes leaves behind an unpleasant reminder. You may see long-term swelling
or changes in skin color where the clot was. Or it could hurt. These symptoms,
known as post-thrombotic syndrome, sometimes show up as much as a year after
the clot.
Exercise
Use your muscles to promote blood
flow. Work your lower leg muscles especially. When you're not active -- at your
desk, for example -- take breaks to stretch your legs. Stand up. Step away for
a bit. Regular exercise also helps keep you at a healthy weight, and that
lowers your risk, too.
Travel
Tips
When you travel for more than 4
hours, avoid tight clothing and drink plenty of water. Get up and walk around
at least every couple of hours. If you have to stay in your seat, stretch and
move your legs. Try clenching and releasing your calves and thighs, or lifting
and lowering your heels with your toes on the floor. Do plenty of sightseeing
by foot once you arrive!