Chapter 3: Diagnostic Imaging and Testing Flashcards Preview

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Flashcards in Chapter 3: Diagnostic Imaging and Testing Deck (16)
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1

x-ray

Aka radiographs.
Radiographs are ordered when there is the possibility of:
Fracture
Dislocation
Bony abnormality/deformity
Tumor
Arthritis
Bone cancer
Foreign object
Infection
Dental caries

2

Radionuclide Bone Scan

Radionuclide Bone Scans are used to identify:
Stress fractures
Bone infections
Bone cancer
Arthritis

3

Fluroscopy

Fluroscopy is a type of radiography that can be performed when the clinician wants to see a "live" image to determine the size, shape and movement of tissue. These are commonly found in AT facilities because they are non invasive.

Fluroscopes can be used to look at:
Blood flow
tumors
Fractures
Organs
Foreign bodies
Some soft tissue

Fluroscopes can assist with:
Biopsy
Injections
Catheter insertion and Pacemaker insertion

4

Computed Tomography Scan (CT Scan)

CT scans are performed to look at cross-sections of:
Internal organs
Bone
Soft tissue
Blood vessels.

5

Positron Emission Tomography Scan (PET Scan)

A PET scan is ordered by a physician to examine the cell metabolism and biochemistry of tissue and organs. This imaging mode is used to identify certain types of:
Cancer
Thyroid conditions
Infections
Bleeding
Evaluate kidney function

6

Magnetic Resonance Imaging (MRI)

An MRI is a test that applies a magnetic field to the body. MRIs are used to identify:
Tumors
Musculoskeletal injuries
Soft tissue conditions
Fractures
Bleeding
Infection

7

Diagnostic Ultrasound (Sonography)

Ultrasound consists of high frquecy sound waves that penetrate the body to produce images of internal structures in "real" time.
Ultrasound is used to identify:
Tumors
Enlarged lymph nodes
Heart abnormalities
Soft tissue injury
Bleeding
Fetal development

8

Electromyography and Nerve Conduction Studies

Electromyography is done to measure the electrical activity in a muscle. The result is recorded on an electromyogram (EMG). Taking an EMG involves inserting a needle into a muscle and recording the electrical activity. A nerve conduction study (NCS) is typically performed in conjunction with EMGs. It measures the electrical signals of a muscle's nerve.

EMG's are used to determine the cause of muscle weakness and abnormal nerve conduction, which may be due to medical conditions such as muscular dystrophy, myasthenia gravis or amyotrophic lateral sclerosis (ALS)

9

Electrocardiography

Electrocardiography is done to determine whether the electrical activity of the heart is normal. The results are recorded onto an electrocardiogram (ECG).

An ECG is used to determine:
Ischemia (inadequate blood supply to an organ, especially the heart muscles).
Heart Attack
Pericarditis (Inflammation of the pericardium).
Valvular Disorders
Electrolyte imbalances
Palpitations (irregular heartbeat)
Angina (Chest Pain)
Other heart related problems

10

Holter Monitor

A Holter Monitor is a device that is worn by a pt to monitor the heart's electrical activty. It works in the same manner as an ECG.

A Hotler Monitor is used to identify:
Arrythmias (irregular heartbeat)
Ischemia
Cardiomyopathies
Premature ventricular contractions
Monitors pacemakers

11

Cardiac Stress Test

A cardiac stress test is used to look at the heart's rythm during exercise in a controlled environment.

It is used to identify:
Coronary artery disease (Damage or disease in the hearts major blood vessels).
Ischemia
Angina
Monitor the functional capacity of patients with heart disease.

12

Laparoscopy

A laparoscopy is an invasive procedure in which a small incision is made in the abdomen and a scope is inserted into the incision to view the inside of the abdomen. It allows the surgeon to see the internal structures of the abdomen and to determine any abnormalities.

It is used to diagnose conditions of the abdomen to provide a venue for surgical procedures for:
Gallbladder
Appendix
Uterus
Colon
Biopsies

13

Colonoscopy

An invasive procedure done to examine the colon and rectum for abnormalities.

Used to examine the patient for any early indication of colon cancer or polyps and to help explain bleeding or changes in normal bowel habits.

14

Urinalysis

A Diagnostic Test to determine:
pH
Protein
Glucose
Ketone
Bilirubin
Hemoglobin
Nitrate
Leukocytes
Urobilinogen
Specific Gravity

15

Complete Blood Count (CBC)

a diagnostic test used to examine specific components of whole blood and expresses those components in designated unites (per volume of blood).

It is frequently ordered by physicians as a basic screening test to indicate the overall health of a person and to provide information regarding the ratios of cells per volume of blood.

Determine the number and types of:
WBC
RBC
Hematocrit (volume of RBC's in whole blood)
Hemoglobin level
Platelets per unit is also estimated.

16

Pulse Oximeter

A noninvasive device that quickly measures the amount of oxygen saturation in a person's blood. It is used to determine if the pt would benefit from supplemental oxygen.

Limitations that may lead to inaccurate reading in oxygen saturation include external interference (motion, bright light) hypo-tension, hypothermia, carbon monoxide poisoning and dark nail polish.