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Chronic Renal Failure (CRF) Learning Center

High blood pressure is almost always present during all stages of chronic kidney disease. A neurologic examination may show signs of nerve damage. The health care provider may hear abnormal heart or lung sounds with a stethoscope.
Source:ADAM
Date:August 12, 2009
Kidney failure is typically diagnosed and treated by a nephrologist, a doctor that specializes in treating the kidneys. The patient that is suspected of having chronic kidney failure will undergo an extensive blood work-up. A blood test will asses...
Source:Gale Encyclopedia of Medicine
Kidney failure is typically diagnosed and treated by a nephrologist, a physician specializing in kidney dis- ease. The patient suspected of having chronic kidney failure will undergo an extensive blood work-up, usually performed by a laboratory te...
Source:Gale Encyclopedia of Nursing and Allied Health
During a physical examination, a health care provider studies a patient's body to determine the presence or absence of physical problems. A typical physical examination includes: Inspection (looking at the body; Palpation (feeling the body with ha...
Source:ADAM
Date:February 23, 2009
The health status of populations and of individuals is assessed for many reasons. Assessing needs for care helps guide the allocation of resources— diagnostic assessments guide treatment, prognostic assessments contribute to planning, and assessin...
Source:Gale Encyclopedia of Public Health
The basic metabolic panel is a group of blood tests that provides information about your body's metabolism. See also: Blood chemistry; Comprehensive metabolic panel.
Source:ADAM
Date:May 7, 2009
24-hour urine protein measures the amount of protein excreted in urine over a 24-hour period. See also: Bence-Jones protein test
Source:ADAM
Date:August 7, 2009
The creatinine clearance test compares the level of creatinine in urine with the creatinine level in the blood. (Creatinine is a breakdown product of creatine, which is an important part of muscle) The test helps provide information on kidney func...
Source:ADAM
Date:August 10, 2009
BUN stands for blood urea nitrogen. Urea nitrogen is what forms when protein breaks down. A test can be done to measure the amount of urea nitrogen in the blood.
Source:ADAM
Date:May 13, 2009
The blood urea nitrogen (BUN) test measures the level of urea nitrogen in a sample of the patient's blood. Urea is a substance that is formed in the liver when the body breaks down protein. Urea then circulates in the blood in the form of urea nit...
Source:Gale Encyclopedia of Medicine
This test measures the amount of potassium in the blood. Potassium (K) helps nerves and muscles communicate. It also helps move nutrients into cells and waste products out of cells. Potassium levels in the body are mainly controlled by the hormone...
Source:ADAM
Date:May 13, 2009
Creatinine is a breakdown product of creatine, which is an important part of muscle. This article discusses the laboratory test to measure the amount of creatinine in the blood. Creatinine can also be measured with a urine test. See: Creatinine - ...
Source:ADAM
Date:August 7, 2009
Electrolytes are positively and negatively charged molecules, called ions, that are found within cells, between cells, in the bloodstream, and in other fluids throughout the body. Electrolytes with a positive charge include sodium, potassium, calc...
Source:Gale Encyclopedia of Medicine
Electrolytes are positively or negatively charged particles that readily dissolve in water. The predominant positively charged electrolytes in the body are sodium, potassium, calcium , and magnesium, while negatively charged electrolytes include c...
Source:Gale Encyclopedia of Nursing and Allied Health
Electrolytes are positively and negatively charged molecules called ions, that are found within the body's cells and extracellular fluids, including blood plasma. A test for electrolytes includes the measurement of sodium, potassium, chloride, and...
Source:Gale Encyclopedia of Surgery
Electrolytes are positively and negatively charged ions that are found within the cells and extracellular fluids, including blood plasma. A test for electrolytes includes the measurement of sodium, potassium, chloride, and bicarbonate. These ions ...
Source:Gale Encyclopedia of Nursing and Allied Health
Creatine is an important compound produced by the body. It combines with phosphorus to make a high-energy phosphate compound in the body. Creatine phosphate is used in skeletal muscle contraction.
Source:Gale Encyclopedia of Medicine
All cells need calcium in order to work. Calcium helps build strong bones and teeth. It is important for heart function, and helps with muscle contraction, nerve signaling, and blood clotting. This article discusses the test to measure the total a...
Source:ADAM
Date:November 15, 2009
Blood glucose monitoring refers to the ongoing measurement of blood sugar (glucose. Monitoring can be done at any time using a portable device called a glucometer. See also: Glucose test - blood; Glucose test - urine; Glucose tolerance test.
Source:ADAM
Date:June 17, 2008
Glucose tests are used to determine the concentration of glucose in blood , urine, cerebrospinal fluid, and other body fluids. These tests are used to detect an increased blood glucose (hyperglycemia), a decreased blood glucose (hypoglycemia), inc...
Source:Gale Encyclopedia of Nursing and Allied Health
Chloride is a type of electrolyte. It works with other electrolytes such as potassium, sodium, and carbon dioxide (CO2) to help keep the proper balance of body fluids and maintain the body's acid-base balance. This article discusses the laboratory...
Source:ADAM
Date:May 13, 2009
CO2 is carbon dioxide. This article discusses the laboratory test to measures the amount of carbon dioxide in the liquid part of your blood, called the serum. In the body, most of the CO2 is in the form of a substance called bicarbonate (HCO3. The...
Source:ADAM
Date:May 7, 2009
A serum magnesium test is a measurement of how much magnesium there is in the blood.
Source:ADAM
Date:March 14, 2009
Abdominal ultrasound is an imaging procedure used to examine the internal organs of the abdomen, including the liver, gallbladder, spleen, pancreas, and kidneys. The blood vessels that lead to some of these organs can also be looked at with ultras...
Source:ADAM
Date:October 29, 2008
Abdominal ultrasound uses high frequency sound waves to produce two-dimensional images of the body's soft tissues, which are used for a variety of clinical applications, including diagnosis and guidance of treatment procedures. Ultrasound does not...
Source:Gale Encyclopedia of Nursing and Allied Health
Abdominal ultrasound uses high frequency sound waves to produce two-dimensional images of the body's soft tissues, which are used for a variety of clinical applications, including diagnosis and guidance of treatment procedures. Ultrasound does not...
Source:Gale Encyclopedia of Surgery
Ultrasound technology allows doctors to "see" inside a patient without resorting to surgery. A transmitter sends high frequency sound waves into the body, where they bounce off the different tissues and organs to produce a distinctive pattern of e...
Source:Gale Encyclopedia of Medicine
An abdominal CT scan is an imaging method that uses x-rays to create cross-sectional pictures of the belly area. CT stands for computed tomography. See also: CT scan
Source:ADAM
Date:February 23, 2009
A magnetic resonance imaging (MRI) scan of the abdomen is a noninvasive method to create detailed pictures of the inside of the belly area. Unlike x-rays and computed tomographic (CT) scans, which use radiation, MRI uses powerful magnets and radio...
Source:ADAM
Date:February 23, 2009
Magnetic resonance imaging (MRI) scanners rely on the principles of atomic nuclear-spin resonance. Using strong magnetic fields and radio waves, MRI collects and correlates deflections caused by atoms into images. MRIs (magnetic resonance imaging ...
Source:Gale Encyclopedia of Neurological Disorders
A renal scan is a nuclear medicine exam in which a small amount of radioactive material (radioisotope) is used to measure the function of the kidneys.
Source:ADAM
Date:October 2, 2008
A kidney nuclear medicine scan, or study, is a simple outpatient test that involves administering small amounts of radioactive substances, called tracers, into the body and then imaging the kidneys and bladder with a special camera. The images obt...
Source:Gale Encyclopedia of Medicine
A kidney radionuclide scan, also called a kidney scan or renal scan, is a diagnostic imaging test that involves administering a small amount of radionuclide, also called a radioactive tracer, into the body and then imaging the kidneys with a gamma...
Source:Gale Encyclopedia of Nursing and Allied Health
PTH stands for parathyroid hormone. It is a protein hormone released by the parathyroid gland. PTH is the most important regulator of the body's calcium and phosphorus levels. Release of PTH is controlled by the level of calcium in the blood. Low ...
Source:ADAM
Date:October 14, 2009
The parathyroid hormone (PTH) test is a blood test performed to determine the serum levels of a hormone secreted by the parathyroid gland in response to low blood calcium levels. PTH works together with vitamin D to maintain healthy bones. The par...
Source:Gale Encyclopedia of Medicine
The parathyroid hormone (PTH) test is a blood test performed to determine the serum levels of a hormone secreted by the parathyroid gland. The parathyroid glands are small paired glands located near the thyroid gland at the base of the neck. Most ...
Source:Gale Encyclopedia of Nursing and Allied Health
Urinalysis is the physical, chemical, and microscopic examination of urine. It involves a number of tests to detect and measure various compounds that pass through the urine.
Source:ADAM
Date:March 14, 2009
Urinalysis is a diagnostic physical, chemical, and microscopic examination of a urine sample (specimen). Specimens can be obtained by normal emptying of the bladder (voiding) or by a hospital procedure called catheterization.
Source:Gale Encyclopedia of Medicine
A urinalysis is a group of manual and/or automated qualitative and semi-quantitative tests performed on a urine sample. A routine urinalysis usually includes the following tests: color, transparency, specific gravity, pH, protein, glucose, ketones...
Source:Gale Encyclopedia of Surgery
The urine specimen collection is a procedure used to obtain a sample of urine from a patient for diagnostic tests.
Source:Gale Encyclopedia of Nursing and Allied Health
A urinalysis is a group of manual and/or automated qualitative and semi-quantitative tests performed on a urine sample. A routine urinalysis usually includes the following tests: color, transparency, specific gravity, pH, protein, glucose, ketones...
Source:Gale Encyclopedia of Nursing and Allied Health
A urine dipstick is a colorimetric chemical assay that can be used to determine the pH, specific gravity, protein, glucose, ketone, bilirubin, urobilinogen, blood, leukocyte, and nitrite levels of an individual's urine. It consists of a reagent st...
Source:Gale Encyclopedia of Public Health
Urine typically contains epithelial cells shed from the urinary tract. Urine cytology evaluates this urinary sediment for the presence of cancerous cells from the lining of the urinary tract, and it is a convenient noninvasive technique for follow...
Source:Gale Encyclopedia of Public Health
Urinalysis is an important test used in diagnosing diseases of the genitourinary tract. Urine is examined for pH and specific gravity by chemical and direct microscopic methods. The presence and concentration of various chemicals such as proteins,...
Source:Gale Encyclopedia of Public Health
Magnetic resonance imaging (MRI) is a noninvasive way to take pictures of the body. Unlike x-rays and computed tomographic (CT) scans, which use radiation, MRI uses powerful magnets and radio waves. The MRI scanner contains the magnet. The magneti...
Source:ADAM
Date:October 29, 2008
MRI produces a map of hydrogen atoms distributed in the body. Hydrogen is the simplest element known, the most abundant in biological tissue, and one that can be magnetically polarized. It will align itself within a strong magnetic field, like the...
Source:Gale Encyclopedia of Surgery
Magnetic resonance imaging (MRI) is a unique and versatile medical imaging modality. Doctors can obtain highly refined images of the body's interior using MRI. By using strong magnetic fields and pulses of radio waves to manipulate the natural mag...
Source:Gale Encyclopedia of Nursing and Allied Health
Magnetic resonance imaging (MRI) is one of the newest diagnostic medical imaging technologies that uses strong magnets and pulses of radio waves to manipulate the natural magnetic properties in the body to generate a visible image. In the field of...
Source:Gale Encyclopedia of Mental Disorders
Magnetic resonance imaging (MRI) is the newest, and perhaps most versatile, medical imaging technology available. Doctors can get highly refined images of the body's interior without surgery, using MRI. By using strong magnets and pulses of radio ...
Source:Gale Encyclopedia of Medicine
Magnetic resonance imaging (MRI) is a diagnostic imaging procedure that uses radio waves, a magnetic field, and a computer to generate images of the anatomy.
Source:Gale Encyclopedia of Children's Health
Magnetic resonance imaging (MRI) is one of the newest, and perhaps most versatile, medical imaging technology available. Doctors can get highly refined images of the body's interior without surgery using MRI. By using strong magnets and pulses of ...
Source:Gale Encyclopedia of Cancer
Ultrasound involves the use of high-frequency sound waves to create images of organs and systems within the body.
Source:ADAM
Date:March 27, 2009
Ultrasonography is a diagnostic technique that involves directing high frequency sound waves at tissues in the body to generate images of anatomical structures. Ultrasonography is also called sonography, diagnostic sonography, and echocardiography...
Source:Gale Encyclopedia of Neurological Disorders
A thyroid ultrasound, or sonogram, is a diagnostic imaging technique used to evaluate the structure of the thyroid gland . The thyroid is an endocrine gland, which means that it releases its secretions directly into the bloodstream or lymph. It co...
Source:Gale Encyclopedia of Nursing and Allied Health
Diagnostic medical sonography, or ultrasound, is a technique using high frequency sound to create images of specific areas of the body to diagnose various pathologies. The diagnostic medical sonographer performs examinations, records anatomic cond...
Source:Gale Encyclopedia of Nursing and Allied Health
Ultrasonography is the study of internal organs or blood vessels using high-frequency sound waves. The actual test is called an ultrasound scan or sonogram. Duplex ultrasonography uses Doppler technology to study blood cells moving through major v...
Source:Gale Encyclopedia of Cancer
The use of ultrasound to obtain diagnostic images is referred to as diagnostic sonography. Since diagnostic sonography utilizes a nonionizing form of energy, there are no known bioeffects. Thus, diagnostic sonography is applied to a large spectrum...
Source:Gale Encyclopedia of Public Health
A computed tomography (CT) scan is an imaging method that uses x-rays to create cross-sectional pictures of the body. See also: Cranial CT scan; Lumbosacral spine CT scan; Orbit CT scan; Thoracic CT scan.
Source:ADAM
Date:October 29, 2008
Computed tomography (also known as CT, CT scan, CAT, or computerized axial tomography) scans use x rays to produce precise cross-sectional images of anatomical structures.
Source:Gale Encyclopedia of Neurological Disorders
Computed tomography scanning, also called CT scan, CAT scan, or computerized axial tomography, is a diagnostic tool that provides views of internal body structures using x rays. In the field of mental health, a CT scan may be used when a patient s...
Source:Gale Encyclopedia of Mental Disorders
Computed tomography (CT) scans are completed with the use of a 360-degree x-ray beam and computer production of images. These scans allow for cross-sectional views of body organs and tissues.
Source:Gale Encyclopedia of Medicine
Computed tomography (CT), formerly referred to as computerized axial tomography (CAT), is a common diagnostic imaging procedure that uses x rays to generate images (slices) of the anatomy.
Source:Gale Encyclopedia of Children's Health
Computed tomography (CT) scanning is a valuable diagnostic tool that provides physicians with views of internal body structures. During a CT scan, multiple x rays are passed through the body, producing cross-sectional images, or "slices, " on a ca...
Source:Gale Encyclopedia of Cancer
A biopsy is the removal of a small piece of tissue for laboratory examination.
Source:ADAM
Date:November 11, 2008
A biopsy describes the procedure that is used to obtain a very small piece of the target tissue. For some tissues, like the lining of the cheek, cells can be obtained just by scrapping the tissue surface. Other samples are collected using forceps ...
Source:Gale Encyclopedia of Neurological Disorders
Biopsy is a diagnostic procedure in which a piece of tissue and/or cells are removed to be examined under a microscope by a pathologist.
Source:Gale Encyclopedia of Cancer
A medical procedure used to diagnose a condition. Most biopsies involve taking a small piece of skin or muscle under a local anesthetic. When the cells to be analyzed are accessible by needle, the biopsy specimen may be removed with a hollow aspir...
Source:Gale Encyclopedia of Childhood and Adolescence
A renal biopsy is the removal of a small piece of kidney tissue for laboratory examination.
Source:ADAM
Date:October 22, 2007
Kidney biopsy is a medical procedure in which a small piece of tissue is removed from the kidney for microscopic examination.
Source:Gale Encyclopedia of Medicine
Blood pressure measurement is the non-invasive measurement of the pressure exerted by the circulating blood on the walls of the body's arteries.
Source:Gale Encyclopedia of Surgery
Measurement of the pressure exerted by the circulating blood on the walls of the blood vessels , especially the arteries.
Source:Gale Encyclopedia of Nursing and Allied Health
Erythropoietin, also called EPO, is a type of protein called a glycoprotein that is formed mainly in the kidneys to stimulate the production of red blood cells.
Source:Gale Encyclopedia of Medicine
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