Final exam Flashcards
secondary factors from marrow infiltration and decreased marrow production
anemia, thrombocytopenia, leukopenia/neutropenia, bone or joint pain
factors secondary to extramedullary infiltration
hepatosplenomegaly, lymphadenopathy, stridor and orthopnea, cranial nerve palsies, retinal exudates, testicular enlargement
common laboratory findings at diagnosis
low hemoglobin
low platelet count
abnormal WBC- some very high, some lower
treatment stages for leukemia
induction- puts into remission- 4 weeks
consolidation- treatment to spine 4-8 weeks
interim maintenance- rest phase 6-8 weeks
delayed intensification: reduces hiding cells- 8 weeks
maintenance: 2 yrs females 3 males
common side effects w/ chemotherapy
bone pain, muscle weakness, avascular necrosis, peripheral neuropathy
differential diagnosis for lymphadenopathy
infection
cyst
systemic disease- rheumatic
tumor- benign/malgnant
when to biopsy lymph node
supraclavicular node, increasing size over 2-4 weeks, constitutional symptoms, asymptomatic enlarged node-not decreasing in size over 6 weeks or not normal after 8-12 seeks
important factor to remember w/ non-hodgkinds lymphoma
can present w/ spinal cord compression and weakness
wilms tumor
peak age 2-3 years
spreads to contralateral kidney, lungs
asymptomatic abdominal mass
increased risk w/ african americans
overgrowth syndromes
beckwith-wiedemann syndrome
perlman
simpson-golabibehmel
sporadic hemihypertrophy
neuroblastoma
tumor of sympathetic nervous tissue majority in adrenal or paraspinal or cervical
median age- 22 months
therapy: chemo, stem cell
when to be concerned about bone pain
persistent pain
progressive pain
occurs at night
associated w/ swelling/mass/limitation of mvmt
osteosarcoma
peak incidence in 2nd decade of life
occurs ealier in females- associated w/ growth spurt
occur in metaphyseal portion of long bones
pain, mass
most occur in distal femur, proximal tibia, proximal humerus while in swings, there is even split between extremities dn axial skeleton
ewings sarcoma
most common in 2nd decade, also young children equally in extremities and central more constitutional symptoms no associations onion peel on xray
therapy os and es
OS0 chemo, no radiation, surgical resection
ES- chemo and/or radiation, surgical resection if not axial
most common pediatric brain tumor
supratentorial astrocytoma
clinical features brain tumors
increased ICP irritability, lethargy early morning HA which improves vomiting- usually in AM unexplained changes in personality/behavior papilledema
functions of renal system
filters waste regulates ion levels in plasma regulates blood pH conserves valuable nutrients regulates blood volume regulates RBC production
functions of nephron
filtration
tubular reabsorption
tubular secretion
urinary excretion
causes of acute renal failure
pre-renal: conditions that decrease renal blood flow (HF, sepsis, shock)
post-renal: conditions that obstruct urine output (kidney stones, prostatic hypertrophy, cancers of the bladder)
intra-renal: injury and/or inflammation within kidneys (interstitial nephritis, acute glomerulonephritis, ischemia)
oliguria
daily urine output
anuria
no urine production
pyelonephritis
when a UTI progresses to involve the upper urinary system
s/s: back pain, flank pain, fever/chills, feeling sick, n/v, confusion, changes in urine
urinary tract calculi (stones)
increased concentration of salts in good, UTI,
treatment: manage pain, hydration, cytoscope, lithotripsy