Sonography-Guided Interventional Procedures Flashcards
which of the following is NOT a contraindication to needle biopsy?
lesion deeper than 5cm
which of the following is NOT included in a coagulation study?
WBC
which test standarizes the results of the other coagulation studies as it adjusts for variations in processing and is expressed as a number?
INR
which of the following CANNOT cause a coagulopathy?
vitamin k
which of the following is a procedure that uses aa 20 to 27 gauge needle attached to a syringe to obtain a sample of cells for cytologic examination?
fine-needle aspiration
which of the following size needle gauges will produce the largest specimen size?
14 gauge
which of the following statements regarding needle visualization is FALSE?
the more parallel the needle is to the transducer, the easier it is to visualize
what is the purpose of the time-out during a procedure?
verify the correct patient is present and confirm the procedure and procedure site
which of the following is NOT one of the most common complications to occur following a biopsy?
infection
which of the following procedures is performed to remove an accumulation of serious fluid in the peritoneal cavity?
paracentesis
What is the greatest advantage of sonography-guided biopsy procedures over other imaging modalities?
real-time visualization of the needle tip
what is the contraindication to a needle biopsy?
unsafe biopsy route
what laboratory test should be documented prior to biopsy procedure?
coagulation study
what is the range of needle gauges used for a core biopsy?
14-16 gauge
what determines if the sonographic appearance of a needle is a hyperechoic line or hypoechoic dot?
imaging plane
what procedure is used to remove infected fluid?
abscess drainage
what sonography-guided biopsy procedure is easier to complete using a transhepatic approach?
right adrenal gland
what condition is an indication for the patient to have a prostate biopsy?
palpable nodule
what can occur when an arterial puncture site fails to seal?
pseudoaneurysm
what does prostate cancer occur most frequently?
peripheral zone
what is the term used to describe a fluid collection round the lung?
pleural effusion
which of the following procedures is performed to remove an accumulation of serous fluid in the peritoneal cavity?
paracentesis
a biopsy site is scanned before the biopsy to determine the best ___ with the shortest ____ and the ___ angle.
point of entry; distance; least
the term percutaneous means
to perform through the skin
ultrasound-guided aspirations assist needle placement for
fluid sampling
a percutaneous cholangiogram is an ultrasound-guided procedure for
bile drainage
endoluminal ultrasound is
used to evaluate vessels and grafts druing surgery
chronic villus sampling is
the optimal transducer to use during intraoperative ultrasound when the near field is the area of is a
linear array probe
which of the following is an advantage of interventional and intraoperative procedures?
needle or tube tracking
intraoperative ultrasound is NOT limited by
the need for ionizing radiation
a biopsy site scanned before the biopsy to determine the best point of entry with the shortest distance and the
smallest angle
during an ultrasound-guided aspiration
any change in the shape or size of a fluid-filled structure can be visualized
ultrasound is used during __ to determine accurate needle placement for tissue sampling
percutaneous biopsies
percutaneous aspirations obtain tissue samples by applying suction through a needle attached to a syringe.
true
ultrasound-guided biopsies use ultrasound to determine accurate needle placement for fluid suction.
false
an option for a sterile transducer sheath during interventional ultrasound is an alcohol bath.
false
ultrasound-guided aspirations assist needle placement for small organ or stone extraction.
false
chorionic villus sampling is considered a percutaneous biopsy procedure.
true
Sonographic guidance allows for real time visualization of the needle tip as it passes through tissue planes to target the area.
true
Color Doppler is used to prevent complications by identifying and helping the clinician to avoid ___
that may be in the needle path.
vascular structures
A biopsy can help distinguish between
benign and malignant lesions, and metastatic diseases
Three tests that measure the time it takes for blood to form a clot
prothrombin time(PT), partial prothrombin time(PTT), international normalized ratio(INR)
Patients with coagulopathy may be given what prior to the procedure if the need for the procedure outweighs the risk of bleeding?
fresh frozen plasma, K
When planning a biopsy route, what must be avoided?
vessels, bowel, trachea, adjacent organs
what procedure involves removing small samples of tissue using an automated hollow core needle commonly referred to as a
core needle biopsy, biopsy gun
The sonographer’s role is to recommend the __ and __ approach to the lesion.
best, safest
What is a contraindication to a needle biopsy?
unsafe biopsy route
A procedure performed to remove fluid from the pleural space is called__. Patients
are typically positioned leaning over a table.
thoracentesis, upright
The most common causes of ascites are
cirrhosis and malignancy
A paracentesis can be performed for
diagnostic and therapeutic reasons
