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h--Hour
HA--Hepatic Artery, Hepatitis
A, Hyperalimentation
HAA--Hepatitis Associated Antigen
HAAA--Hepatitis-associated
aplastic anemia
Haemagglutination-Inhibition--An
assay used for certain types of viruses which are able to agglutinate red blood
cells. Haemagglutination-inhibition records blocking
Half-Life--The time required
for half the amount of a drug to be eliminated from the body
HAP--High Amplitude Peristalsis
H&P--History & Physical
Harris' Band--Anomalous peritoneal
folds which extend from the gallbladder to the inferior surface of the liver
to the proximal duodenum, sometimes traversing the mesocolon near the hepatic
flexure
HAV--Hepatitis A Virus
Hawthorne Berry--Crataegus
Laevigata. Also known as Mayblossom and Whitehorn. Apparently causes a direct
dilation of the smooth muscles of the coronary vessels which lowers their resistance
and increasing blood flow. Said to have a direct, favorable effect on the heart
as well as increase nerve conductivity. Used as a mild astringent for treating
sore throats, as well as treating hypertension, nervous disorders and insomnia
Hazardous Material--Substances
that are dangerous. i.e. Things that have come into contact with the hepatitis
C virus through use, such as needles, syringes, alcohol swabs, bandaids
Hb--Hemoglobin
HB--Hepatitis B
HBc--Hepatitis B Core (antigen)
HBe--Hepatitis B e Surface
(antigen)
HBF--Hepatic Blood Flow
HBs--Hepatitis B Surface (antigen)
HBcAb--Antibody to the Hepatitis
B Core Antigen
HBcAb--Antibody to the Hepatitis
B Core Antigen
HBeAb--Antibody to the Hepatitis
B e Antigen
HB-Ag--Hepatitis B Antigen
HBcAg--Hepatitis v Core Antigen
HBeAg--Hepatitis B e Antigen
HBsAg--Hepatitis B Surface
Antigen. This is the outer surface of the hepatitis B virus that triggers an
antibody response. HBsAg "positive" or "reactive" means that the person is infected
with HBV and can possibly pass it on to others with whom they come into contact
with
HbCV--Hepatitis B Conjugate
Vaccine
HBIG--Hepatitis V Immune Globulin
HBV--Hepatitis B Virus
HC--High Calorie
HCD--High Carbohydrate Diet
HCI--Hydrochloric Acid
HCO3Bicarbonate
HCS--Hematocystic
Hct--Hematocrit
HCV--Hepatitis C Virus
HCV-RNA--(Hepatitis C Virus
Ribonucleic Acid)--Fragments of the replicating hepatitis C virus. These can
be detected using highly sophisticated testing to determine the level of the
hepatitis C virus present in the body
HCV-RNA (qPCR)-Negative-- Is
defined as less than 100 copies/ml of hepatitis C viral RNA as measured by the
National Genetics Institute assay. Considered a Sustained Response
HDL--High Density Lipoprotein.
Known as "good" cholesterol, HDL's are large, dense, protein-fat particles that
circulate in the blood picking up already used and unused cholesterol and taking
them back to the liver as part of a recycling process. Higher levels of HDL's
are associated with a lower risk of cardiovascular disease because the cholesterol
is cleared more readily from the blood
HDL(1)--Lp(a) Lipoprotein
HDL(2)--High Density Lipoprotein
HDL(3)--High Density Lipoprotein
HDL-C--HDL-Cholesterol
HDLP--High Density Lipoprotein
HDV--Hepatitis D Virus, Human
Delta Virus
HE--Human Enteric
H&E--Hematoxlin and Eosin
(Stain)
Heartburn--A sensation of warmth
or burning behind the sternum or in the epigastrium. Sometimes there is a acidic
taste associated with heartburn
Heartsease--Viola Tricolor--also
known as Wild Pansy. Used in the form of an ointment and poultice in eczema
and other skin troubles, and internally for bronchitis
HELLP Syndrome--Hemolysis elevated
liver enzymes, and low platelet count: a serious disorder of pregnancy of unknown
etiology that occurs between the 23rd and 39th weeks, that is characterized
by a great reduction in the number of platelets per cubic millimeter, by hemolysis,
by abnormal liver function tests, and sometimes by hypertension, and that requires
termination of pregnancy
Helminth--Aparasitic worm such
as a ascarid, liver fluke, tapeworm, or leech
Helper Cell--A type of lymphocyte
which aids the recognition of specific antigens and the production of an immune
response
Helper T Cell (HTL)--Helper
T Cells are activated by binding to an HTL specific epitope presented by cells
in a similar fashion as CTL epitopes are presented. When activated, HTLs help
expand the immune response by releasing chemicals which stimulate the CTL response
and the B-cell antibody responses
Hematemesis--Vomiting of blood
Hematochezia--The passage of
bright red blood from the rectum. It is often due to bleeding from the colon,
rectum or hemorrhoids
Hematocrit--The percentage
of the volume of a blood sample occupied by cells
Hematogenous--Concerned with
the production of blood or of one or more of its constituents. Taking place
or spread by way of the blood
Hematoma--Bruising. Accumulation
of blood trapped within the tissues of the body
Hematuria--Blood in the Urine.
Gross hematuria can be observed with the naked eye and indicate severe hemorrhage.
Microscopic hematuria is either observed with microscope or by testing for the
presence of blood with chemical strips
Hemeproteins--Proteins that
contain an iron porphyrin, or heme, prosthetic group resembling that of hemoglobin
Hemlock--Conium Maculatum--POISON.
Because of its peculiar sedative action on the motor centers, Hemlock juice
(Succus conii) is prescribed as a remedy in cases of undue nervous motor excitability,
acute mania, spasms of the larynx and gullet, teething in children, epilepsy
from dentition cramp, in the early stages of paralysis agitans, etc. As an inhalation
it is said to relieve cough in bronchitis, whooping cough, asthma, etc. Hemlock
has to be administered with care, as narcotic poisoning may result from internal
use, and overdoses produce paralysis. In poisonous doses it produces complete
paralysis with loss of speech, the respiratory function is at first depressed
and ultimately ceases altogether and death results from asphyxia. The mind remains
unaffected to the last. In the account of the death of Socrates, reference is
made to loss of sensation as one of the prominent symptoms of his poisoning,
but the dominant action is on the motor system. It is placed in Table II of
the Poison Schedule
Hemobilia--Bleeding into the
biliary passages
Hemodialysis--A method of dialysis
in which blood is purified by circulating through an apparatus outside the body.
Sometimes called an "artificial kidney." A process of removing blood from an
artery, purifying it, and returning it to the body
Hemoglobin--The red blood pigment
which carries oxygen in the blood. A protein in red blood cells that transports
oxygen from the lungs
Hemolysis--May
be caused by bacterial hemolysins, by antibodies that cause complement dependent
lysis, by placing red cells in a hypotonic solution or by defects in the red
cell membrane
Hemolytic Anemia--A group of
disorder in which anemia occurs due to destruction of red cells. In hemolytic
anemia, serum haptoglobin levels is decreased
Hemolytic Jaundice--A type
of jaundice, where the skin takes on a yellowish hue, which occurs when red
blood cells have been destroyed (by hemolysis)
Hemophiliac--A person who does
not produce all of the proteins necessary for clotting blood
Hemopoiesis--The body function
in producing blood products. It includes: erythropoiesis: production of red
blood cells and leucopoiesis: production of white blood cells
Hemorrhoids--Dilation of veins
in the anal area. Problems associated with hemorrhoids occur when these veins
become enlarged, prolapsed, or become inflamed or plugged
Hemochromatosis--Disorder of
iron metabolism characterized by excess deposition of iron in the tissues, especially
the liver. It is characterized by pigmentation of the skin, hepatic cirrhosis,
decreased carbohydrate tolerance, cardiomyopathy and endocrinopathy (especially
hypogonadism). Mainly seen in men over the age of 40 years. It has an associated
arthropathy distinguished by involvement of the metacarpophalangeal joints (particularly
the second and third), wrists, knees, shoulders, and hips. There is often an
associated chondrocalcinosis
Hemoglobin--The iron containing
protein in red blood cells that carries oxygen
Hemoglobins--Oxygen-carrying
pigments of the erythrocytes, formed by the developing erythrocyte in bone marrow.
Hemoglobin is a conjugated protein containing four heme groups and globin. A
molecule of hemoglobin contains four globin polypeptide chains, designated alpha,
beta, gamma, delta in the adult. Each is composed of several hundred amino acids
Hemolysis--Destruction of red
blood cells, resultant escape of hemoglobin
Hemolytic Anemia--Anemia caused
by excessive destruction of red blood cells
Hemoperfusion--Dialysis of
the blood to remove foreign substances such as poisons or drugs
Hemophilia--Hereditary blood
disease where the blood fails to clot and abnormal bleeding occurs. It is found
only in males and is treated by injections of Factor VIII
Hemopoietic--Blood cell formation
Hemoptysis--Coughing up blood
Hemorrhage--Rupture of a blood
vessel or leakage of blood from a vessel. Significance of hemorrhage depends
upon the volume of blood loss, rate of loss, and site of hemorrhage. Rapid losses
of greater than 20% of the blood volume may induce hypovolemic shock. Hemorrhage
that might be insignificant in the subcutaneous tissue can be fatal when located
within the brain
Hemosiderosis--A focal or general
increase in tissue iron stores without associated tissue damage
Hemostasis--Stopping the flow
of bleeding, stopping or slowing circulation. the ability to control bleeding
following trauma to the tissue. It is affected by vascular reaction, platelet
function, and coagulation factors
Hemostatic--Agent that arrests
bleeding and hemorrhages
Hemothorax--When blood accumulates
in one of the chest cavity. Blood in the pleural space of the chest
Hematochezia--Maroon stools,
usually from a lower GI bleed
HEN--Home Enteral Nutrition
Henna--Lawsonia Alba--Widely
used in Europe for tinting the hair, usually in the form of a shampoo. There
has been found in Henna a brown substance of a resinoid fracture, having the
chemical properties much like the tannins, and therefore named Hennotannic acid.
It has been used both internally and locally in jaundice, leprosy, smallpox,
and affections of the skin
HEP--Hepatic
Hepar--Liver
Heparin--A glycosaminoglycan
sulfuric acid ester that occurs esp. in the liver and lungs, that prolongs the
clotting time of blood by preventing the formation of fibrin, and that is administered
parenterally in the form of its sodium salt in vascular surgery and in the treatment
of postoperative thrombosis and embolism. In other words-A medication which
quickly produces anticoagulation and which must be given by injection
Hepat, Hepato--Combining form
meaning liver, hepatic
Hepatalgia--Pain in the Liver
Hepatatrophia--Atrophy of the
liver
Hepatectomize--To deprive of
the liver by surgical removal
Hepatectomy--Excision of the
liver or a part of it
Hepatic--Pertaining to the
liver, involving the liver
Hepatic Arteriole--Proposed
but controversial supply arteriole from terminal hepatic artery into parenchymal
sinusoids in the periportal region
Hepatic Artery--Branch of the
celiac artery that supplies the liver with arterial blood
Hepatitic Calculi--Stones originating
in extrahepatic biliary tract or solely in the liver. Also found in liver cysts
Hepatic Cell--Hepatocyte
Hepatic Coma--State of unconsciousness
seen in patients severely ill with liver disease. Sometimes the precomatose
state of hepatic encephalopathy. A coma that is induced by severe liver disease
Hepatic Duct--Common bile duct.
A duct conveying the bile away from the liver and uniting with the cystic duct
to form the common bile duct
Hepatic Encephalopathy--All
stages in the onset and development of coma, Changes in consciousness, behavior,
mental state. Occurs in advanced liver disease. A group of symptoms that may
occur when there is damage to the brain and nervous system as a complication
of liver disorders, characterized by various neurologic symptoms including changes
in behavior changes, consciousness, and personality changes. Abnormal brain
function caused by passage of toxic substances from the liver to the blood
Hepatic Flexure--Also called
Right Colic Flexure, the right-angle bend in the colon on the right side of
the body near the liver that marks the junction of the ascending colon and the
transverse colon
Hepaticoduodenostomy--Anastomosis
of the hepatitic duct to the duodenum
Hepaticoenterostomy--Anastomosis
of the hepatitic duct to the intestine
Hepaticogastrostomy--Anaastomosis
of the hepatitic duct to the stomach
Hepaticojejunostomy--Anastomosis
of the hepatic duct to the jejunum
Hepaticojejunostomy Roux-en-Y--The
surgical fashioning of a direct connection between hepatic duct and jejunum
to drain bile directly from the liver when disease or injury has damaged the
bile ducts
Hepaticolithotomy--Incision
of the hepatic duct with removal of calculi
Hepaticolithotripsy--The crushing
of a calculus in the hepatitic duct
Hepaticostomy--Fistulization
of the hepatitc duct
Hepaticotomy--Incision of the
hepatitic duct
Hepatic Necrosis--Destruction
of functional liver tissue
Hepatic Portal SystemGroup
of veins that carry blood from the capillaries of the stomach, spleen, intestine,
and pancreas to the sinusoids of the liver
Hepatic Portal Vein--A portal
vein carrying blood from the digestive organs and spleen to the liver where
the nutrients carried by the blood are altered by hepatocytes before passing
into the systemic circulation
Hepatic Siderosis--The deposit
of an abnormal quantity of iron in the liver
Hepatitc Trauma--Liver injury
resulting from blunt trauma or penetrating wounds
Hepatic Tuberculosis--Infection
of the liver with tubercle bacilli producing localized granulomata, miliary
lesions, or tuberculoma
Hepatic Vein--Any of a group
of veins that transports blood from the liver to the inferior vena cava, which
carries the blood to the right atrium of the heart. In the ascent to the heart,
the inferior vena cava passes along a groove in the posterior side of the liver,
it is there that the hepatic veins joins it. Blood transported by the hepatic
veins comes not only from the liver but also from most of the abdominal organs.
This blood flows to the liver by way of the aportal vein. Veins which drain
the liver
Hepatic Vein Thrombosis--Occlusion
of the hepatic veins caused by thrombi or fibrous obliteration of the veins
Hepatitis--Inflammation of
the liver, Swollen Liver, liver disease involving degenerative or necrotic alterations
of hepatocytes
Hepatitis A--Self-limited viral
disease of worldwide distribution caused by the hepatitis A virus, more common
in areas of poor hygiene and low socioeconomic standards, transmitted almost
exclusively by the fecal-oral route, although parenteral transmission is possible;
no carrier state. Incubation period is approximately 30 days, with a range of
15 to 50 days. Most cases are clinically inapparent or have mild flulike symptoms;
jaundice, if present, is usually mild. Massive hepatic necrosis (fulminant hepatitis)
can occur but much less commonly than with hepatitis B or non-A, non-B hepatitis.
Previously called epidemic hep., MS-1 hep., jaundice infectious hep., and short-incubation
hepatitis
Hepatitis A Virus, Human--Species
of Hepatovirus which causes human hepatitis A. The virus replicates in
hepatocytes and is thought to reach the intestine via the bile duct. Transmission
occurs by the fecal-oral route
Hepatitis Agents, GB--Proposed
members of the family Flaviviridae. GBV-B causes hepatitis in tamarins
and possibly humans, and is the putative etiological agent of a non-(A-E) hepatitis,
GB hepatitis
Hepatitis A Virus, VP3 Protein (62-75)--Synthetic
peptide
Hepatitis--Alcoholic--Acute
or chronic degenerative and inflammatory lesion of the liver in the alcoholic
which is potentially progressive or reversible; it does not necessarily include
steatosis, fibrosis, or cirrhosis of alcoholics, although it is frequently associated
with these conditions. Liver inflammation resulting from alcoholism, often a
precursor of cirrhosis of the liver
Hepatitis Antibodies--Immunoglobulins
raised by any form of viral hepatitis; some of these antibodies are used to
diagnose the specific kind of hepatitis
Hepatitis Antigens--Antigens
from any of the hepatitis viruses including surface, core, and other associated
antigens
Hepatitis B--Viral disease
caused by the hepatitis B virus that is endemic worldwide, the areas of highest
endemicity being China and Southeast Asia, subSaharan Africa, most Pacific islands,
and the Amazon basin. The virus is shed in all body fluids by individuals with
acute or chronic infections and by asymptomatic carriers, and is transmitted
primarily by parenteral routes, such as by blood transfusion or by sharing of
needles among drug users; oral transmission can occur but has low efficiency,
and it can be spread by intimate personal contact, especially sexual contact,
and by vertical transmission from mother to neonate. Incubation period averages
about 90 days, with a range of 40 to 180 days, the clinical course is more variable
than in hepatitis A. During the prodromal phase there may be fever, nausea,
malaise, anorexia, and vomiting, which lessens with the onset of clinical jaundice,
and urticaria, angioedema, arthritis, or, rarely, glomerulonephritis or a serum
sickness like syndrome may occur. Most patients recover completely and become
HBS Ag-negative in 3 to 4 months, some will remain chronic carriers or develop
chronic active hepatitis or chronic persistent hepatitis. Massive hepatic necrosis
(fulminant hepatitis) is an infrequent complication. In areas of high endemicity
a relationship has been shown between hepatitis and virus infection, cirrhosis,
and primary hepatocellular carcinoma, with the latter being one of the most
common neoplasms. Previously called inoculation hepatitis, long incubation hepatitis,
MS2 hepatitis, serum hepatitis, and homologous serum hepatitis or jaundice
Hepatitis B Antibodies--Antibodies
to the hepatitis B antigens, including antibodies to the surface (Australia)
and core of the Dane particle and those to the "e" antigens
Hepatitis B Antigens--Antigens
of the virion of the Hepatitis B Virus or the Dane particle, its surface, core
and other associated antigens, like the HBe antigen
Hepatitis B Core Antigens--Core
protein antigen of the hepatitis B virus present inside complete virions (Dane
particles) and in free core particles in the nuclei of infected cells; the antigen
is not present in the blood of infected individuals, but anti-HBc antibodies
appear during the acute infection; they do not protect against reinfection
Hepatitis B e Antigens--Core
protein antigen of hepatitis B virus present in the blood in some infected individuals.
Anti-HBe antibodies appear transiently during convalescence; they do not protect
against reinfection
Hepatitis B Hyperimmune Globulin--has
high antibody titre against HBsAg; given in conjunction with vacine for passive
immunization
Hepatitis B Surface Antigens--Viral
antigen of the hepatitis B virus detected by radioimmunoassay. An antigen that
resembles a virus and is found in the sera especially of patients with hepatitis
B -- alsoc called Australia antigen; abbr. HBsAg
Hepatitis B Vaccines--Vaccines
or candidate vaccines containing inactivated hepatitis B or some of its component
antigens and designed to prevent hepatitis B. Some vaccines may be recombinantly
produced
Hepatitis B Virus--Unclassified
DNA virus having complex, double-layered virions 42 nm in diameter, double-stranded
genome, and three major antigens, the hepatitis B core antigen (HBcAg), surface
antigen (HBsAg), and e antigen (HBeAg). Etiologic agent of hepatitis B
Hepatitis B Virus, Duck--DNA
virus that closely resembles human hepatitis B virus. It has been recovered
from naturally infected ducks
Hepatitis B Virus Large Envelope Protein--Required
for hepatitis B virion maturation; amino acid sequence has been determined
Hepatitis B Virus, Woodchuck--Orthohepadnavirus
causing chronic liver disease and hepatocellular carcinoma in woodchucks. It
closely resembles the human hepatitis B virus
Hepatitis C--Viral disease
caused by the hepatitis C virus, most common form of post-transfusion hepatitis;
also follows parenteral drug abuse and is a common acute sporadic hepatitis,
with approximately 50% of acutely infected persons developing chronic hepatitis.
Chronic infection is generally mild and asymptomatic, but cirrhosis may occur
Hepatitis C Antibodies--Antibodies
to the Hepatitis C antigens including antibodies to envelope, core, and non-structural
proteins
Hepatitis C Antigens--Antigens
of the virions of hepatitis C-like viruses, their, core, surface or other associated
antigens
Hepatitis, Chronic Active--Chronic
inflammation of the liver occurring as a sequel to hepatitis B or non-A, non-B
hepatitis. The same disease may occur in congenital or acquired hypogammaglobulinemia,
or in association with the administration of certain drugs. It is characterized
by infiltration of portal areas by plasma cells and macrophages, piecemeal necrosis
(destruction of hepatocytes in the periphery of lobules), and fibrosis. The
course is highly variable; there may be long asymptomatic periods interspersed
with periods of symptomatic hepatitis with malaise, jaundice fever, and anorexia;
there may be extrahepatic manifestations, including amenorrhea, arthritis, thyroiditis,
skin rashes, vasculitis, glomerulonephritis ulcerative colitis, and Sjogren's
syndrome; or the disease may progress to cirrhosis and liver failure. Autoimmune
pathogenesis is suspected. Also called autoimmune hepatitis, chronic aggressive
hepatitis, plasma cell hepatitis, lupoid hepatitis, subacute hepatitis, and
acute juvenile cirrhosis
Hepatitis C-Like Viruses--Genus
of Flaviviridae causing parenterally transmitted non-A, non-B hepatitis
(Hepatitis C) which is associated with transfusions and drug abuse. Hepatitis
C virus is the type species
Hepatitis C Virus Envelope 2 Protein--RN
refers to quasispecies 4E; amino acid sequence known
Hepatitis C Virus Nucleocapsid Protein--Antibodies
against the above protein are found in patients with hepatocellular carcinoma;
amino acid sequence has been determined
Hepatitis E--Acute form of
hepatitis caused by a virus serologically distinct from the agents of hepatitis
A, B, and C. Hepatitis E is associated with fecally contaminated water, is enterically
transmitted, commonly found in tropical or subtropical countries
Hepatitis E Virus--Positive-stranded
RNA virus species in the genus Calicivirus, causing enterically-transmitted
non-A, non-B hepatitis (Hepatitis C)
Hepatitis, Infectious Canine--Adenovirus
infection causing fever, edema, vomiting, and diarrhea in dogs, especially puppies.
In foxes it causes acute encephalitis with coma, convulsions, paralysis, and
death
Hepatitis, Lupoid--Chronic
active hepatitis associated with Lupus Erythematosus
Hepatitis, Non A Non B--Hepatitis
clinically and immunologically similar to hepatitis A and hepatitis B but caused
by different viruses
Hepatitis, Peliosis--An abnormal
condition characterized by the occurrence of numerous small blood-filled cystic
lesions throughout the liver
Hepatitis, Toxic--Hepatitis
caused by true hepatotoxins and drugs which induce a hypersensitivity reaction
Hepatitis, Viral, Animal--Viral
hepatitis in animals
Hepatitis, Viral, Human--Viral
hepatitis in man
Hepatitis Virus, Duck--Highly
fatal, rapidly spreading picornavirus disease of waterfowl ducklings,
characterized primarily by hepatitis marked by an enlarged, mottled, hemorrhagic
liver
Hepatitis Viruses--Any of the
viruses that cause inflammation of the liver. Includes both RNA and DNA viruses
as well viruses from humans and animals
Hepatization--Conversion of
tissue (such as the lungs in pneumonia) into a substance which resembles liver
tissue
© Vikki Shaw |