Chapter 1 Flashcards
What is ascites?
A collection of abdominal fluid within the peritoneal cavity
Define chromaffin cells?
the cells in the adrenal medulla that secrete epinephrine and norepinephrine
Define endoscopy?
a means of looking inside the human body by utilizing an endoscope
Define exudate ascites?
a collection of abdominal fluid within the peritoneal cavity that may be associated with cancer
Define hematocrit?
the lab. value that indicates the amount of RBC’s in blood
Define leukocytosis?
an elevated WBC count
Define nuclear medicine?
a diagnostic imaging modality that utilizes the administration of radionuclides into the human body for analysis of the function of organs, or the treatment of various abnormalities
Define oncocytes?
large cells of glandular origin
Define paracentesis?
procedure that uses a needle to drain fluid from the abdominal cavity for diagnostic/therapeutic reasons
Define parietal peritoneum?
portion of the peritoneum that lines the abdominal and pelvic cavity
Define radiography?
a diagnostic imaging modality that uses ionizing radiation for imaging bones, organs, and some soft tissue structures
Define thoracentesis?
procedure that uses a needle to drain fluid from the pleural cavity for diagnostic/therapeutic reasons
Define transudate ascites?
a collection of abdominal fluid within the peritoneal cavity often associated with cirrhosis.
Define visceral peritoneum?
a portion of the peritoneum that is closely applied to each organ
Clinical indications for an abdominal/ retroperitoneal scan?
- abdominal, flank, and/or back pain
- signs/symptoms like jaundice or hematuria
- palpable abnormalities (mass or organomegaly)
- abnormal lab values/abnormal previous imaging exams
- follow-up of known/suspected abnormality
- search for metastatic disease/occult primary neoplasm
- eval. of suspected congenital abnormalities
- abdominal trauma
- pre/post-transplant eval.
- planning/guidance of invasive procedure
- search for free/loculated fluid (retro & peritoneal)
Patient prep for gallbladder/abdominal procedure?
NPO ATLEAST 4 hours, 8 hours optimal
Why should patients be NPO before abdominal exams?
can eliminate presence of bowel gas, prevents contracted gallbladder due to recent food intake
T/F: Most renal exams can be performed without the patient fasting?
True, though some labs may want patient well-hydrated
When should diabetic patients be scanned?
Early in the morning to prevent hypoglycemic incidents
What is universally obtained prior to invasive procedures?
patient consent
What are common invasive procedures performed in sonography departments?
- thoracentesis
- paracentesis
- organ biopsies
- mass biopsies
- abscess drainages
True/False: Biopsies can be performed free-handed?
True
What previous exams should be reviewed by the sonographer before the exam begins?
All previous relatable imaging and lab evals.
What does leukocytosis indicate?
presence of infection