Treating the Obstetric Patient Flashcards
what are the three main changes that influence somatic dysfunction in pregnant patients
structural and biomechanic
body fluid/circulation
hormones
what are effects of pregnancy on pre-existing scoliosis
the curvature does not increase
can be more painful and there is an increased risk of premature birth
what are the effects of pregnancy on rheumatoid arthritis
improved symptoms due to hormonal changes (conception to 6 weeks post partum)
what are the effects of pregnancy on ankylosing spondylitis?
aggravated by pregnancy with an increase in pain caused by stress on sacroiliac joint
HLA B27
what is the mechanical stress caused by pregnancy
1 Low back pain
what are the physiological stresses the body causes during pregnancy
2 lymphatic, 3 venous, 4 hormonal
what MSK changes happen during pregnancy
12 weeks-
20 weeks-
28 weeks-
36 weeks-
40 weeks-
12 weeks; lordosis of lower back, anterior tilt of the pelvis, compression of structure due to fluid retention
20 weeks- widening of joints with increased mobility of SI and pubic symphysis
28 weeks- flexion of the upper back and lower neck (this is compensatory to changes in the pelvis and lower back)
36 weeks- laxity of anterior and posterior longitudinal ligament (surrounding the vertebrae)
40 weeks- ligament lacity, weakness/seperatin of abdominal muscles, internal shoulder rotation
normally _ and and disc balance give you posture; in pregnancy the center of _ changes which leads to increased _ of the lumbar spine as counterbalance. This causes increased stress across the _ _ and increased shear forces across the _ _ _ . There is a shift to _ controlled balance for posutre which leads to _ dissuse and reliance on _
ligaments
gravity
lordosis
veterbral facets
across the intervertebral discs
muscle controlled
extensor dissuse
and reliance on ligaments
if the pain goes down the leg but doesnt pass the knee, is better with rest, and is worse at night what is this indicative of
probably a mechanical issue you could expect a decreased range of motion
what are some causes og LBP in pregnancy
postural changes, muscle weakness, stretching of connectice tissue and microtrauama, posterior pelvic pain, visceral disease, radicular pain, peripheral n. compression
LBP in pregnancy is usually in the _ region and the trunk _ attempt to blanace increased pelvic tilt
microtauma/extensive connective tissue stretching
SI
extensors
posterior pelvic pain signs
pain distal and lateral to the lumbosacral junction
radiated down posterior thigh to the knee ( not past the knee)
no muscle weakness, no sensory impairment
normal reflexes 2/4
pain due to relaxatio of ligaments
usually starts second trimester , mechanical strain from walking/weight on the SI joint
what are some red flags when a patient presents with LBP
severe pain that is not positional, increased pain with cough, sneezing, or valsalva (increased abdominal pressure)
neurological deficits: bladder incontinence, loss of strength, weakness, sensory defectis, abnormal reflexes and strength
what are the causes of radicular pain
herniated disc, bulging disc
peripheral nerve compression presents as?
what is the nerve distribution?
parathessias in the ilioinguinal and genitofermoral nerve distribution with lightening pains (shooting pains)
decreased muscle strenght, loss of sensation
what are the risk factors of LBP during pregnancy
previous history of LBP
multiparity
higher BMI
smoking (literally complicates everything)
age (old)
strenuous work
painful periods
LBP resolves in 80-95% OF CASES IN POST PARTUM BUT???
dont fall into the complacency trap because we want to address this issue
in pregnancy there is an increase in _ fluids, there is a _ L increase over the course of pregnancy due to the pelvic organs and metabolic needs of the fetus
intersitial fluids
6.5 L increase
there is an increase in _ , _ , and _ hormonas in pregnancy. They all promote _ retention leading to _ edema.
estrogen, progesterone, and adrenal hormones
fluid
tissue
lymphatics- contributes to fluid rentention
in pregnancy trends:
cardiac output:
blood volume:
systemic vascular resistance:
blood pressure:
plasma volume:
hematocrit:
cardiac output: up
blood volume: up
systemic vascular resistance: down
blood pressure: down
plasma volume: up
hematocrit: down
cardiovascular changes in the first trimester
maternal systemic vasodilation SVR decreases and CO increases
cardiovascular changes in the second trimester
SVR drops 40%, CO continues to increase
cardiovascular changes in third trimester
CO peaks, HR peaks, BP returns to normal levels
cardiovascular changes in the supine position during the thrid trimester
CO
SV
HR
CO: down
SV: down
HR: up
cardiovascular changes intepartum
CO increases 50% during pushing/contractions
cardiovascular changes post partum
Hr and BP return to normal
lymphatic stresses in pregnancy results in reduced interstitial fluid _
removal
6.5 L fluid increase with decreased removal
why is intersitial fluid not removed as quickly in pregnancy
due to decreased lymphatic flow causes by diaphragm restrictions, organ hypertophy, fasical torsions
LESS EFFECTIVE PRESSURE GRADIENT
closing of lymphatic channels
when supine the uterus can compress on the IVC leading to ?
lower CO
reduced preload
reduced SVR
increased HR (compensatory)
supine complications on the IVC and cardiac output is most pronounced after _ weeks
20 weeks
when pregnanct cardiac output is higher lying on _ side
left
the spinal cord, the veterbral column, the chest and abdominal walls all drain into ?
venous plexuses that have no valves it is a closed system that relies on pressure gradients
blood normally drains into the _ veins to the _ system then to the _
communicating veins
to the azygous/hemiazyous system
to the SVC
_ cage motion helps drives pressure gradient of venous system
thoracic