Hydr Health Dictionary

Hydr: From 1 Different Sources


Hydrophobia

Exaggerated fear of water as in rabies... hydrophobia

Hydrocele

A circumscribed collection of fluid in the tunica vaginalis testis... hydrocele

Hydrocephalus

An abnormal accumulation of CEREBROSPINAL FLUID, or CSF, within the skull, as a result of one or more of three main causes: (i) excessive CSF production; (ii) defective CSF absorption;

(iii) blockage of the circulation of CSF. Such disturbances in the circulation of the ?uid may be due to congenital reasons (most commonly associated with SPINA BIFIDA), to MENINGITIS, or to a tumour.

Symptoms In children, the chief symptoms observed are the gradual increase in size of the upper part of the head, out of all proportion to the face or the rest of the body. The head is globular, with a wide anterior FONTANELLE and separation of the bones at the sutures. The veins in the scalp are prominent, and there is a ‘crackpot’ note on percussion. The normal infant’s head should not grow more than 2·5 cm (1 inch) in each of the ?rst two months of life, and much more slowly subsequently; growth beyond this rate should arouse suspicions of hydrocephalus, so medical professionals caring for infants use centile charts for this purpose.

The cerebral ventricles are widely distended, and the convolutions of the brain ?attened, while occasionally the ?uid escapes into the cavity of the cranium, which it ?lls, pressing down the brain to the base of the skull. As a consequence of such changes, the functions of the brain are interfered with, and in general the mental condition of the patient is impaired. Untreated, the child is dull and listless, irritable and sometimes suffers from severe mental subnormality. The special senses become affected as the disease advances, especially vision, and sight is often lost, as is also hearing. Towards the end, paralysis is apt to occur.

Treatment Numerous ingenious operations have been devised for the treatment of hydrocephalus. The most satisfactory of these utilise unidirectional valves and shunts (tubes), whereby the cerebrospinal ?uid is bypassed from the brain into the right atrium of the heart or the peritoneal cavity. The shunt may have to be left in position inde?nitely.... hydrocephalus

Hydrochloric Acid

A colourless, pungent, fuming liquid. Secreted by the parietal cells in the lining of the stomach, it aids in the digestion of the food.... hydrochloric acid

Hydronephrosis

See KIDNEYS, DISEASES OF.... hydronephrosis

Hydrotherapy

Treatment using water in the form of baths, douches, etc.... hydrotherapy

Hydramnios

A condition characterised by excess of ?uid in the amniotic cavity (see AMNION).... hydramnios

Hydrochlorothiazide

See THIAZIDES.... hydrochlorothiazide

Hydrogen Peroxide

A thick colourless liquid with the formula H2O2 (water is H2O, possessing only one oxygen atom in its molecule). Available in solution with water and as a cream, it is readily reduced to water – giving up oxygen in the process, which causes the characteristic frothing seen when used. H2O2 has antiseptic and deodorising properties; thus it is used as a mouthwash, to clean wounds and ulcers, and occasionally to disinfect body cavities at operation. It is also a bleach.... hydrogen peroxide

Hydrocortisone

Hydrocortisone has the chemical formula, 17hydroxycorticosterone. It is closely allied to CORTISONE both in its structure (cortisone is an oxidation product of hydrocortisone) and in its action. Available in tablet, topical or injection form, hydrocortisone is used in adrenocortical insu?ciency, for the suppression of local and systemic in?ammatory and allergic disorders, and in the treatment of shock. Its mineralocorticoid effects – control of salt and water balance – mean that the drug should not be used long term except as replacement therapy in the treatment of ADDISON’S DISEASE or following adrenalectomy when hydrocortisone should be given with the mineral corticoid

?udrocortisone (see ADRENAL GLANDS; CORTICOSTEROIDS).... hydrocortisone

Hydrops Fetalis

See HAEMOLYTIC DISEASE OF THE NEWBORN.... hydrops fetalis

Hydrothorax

A collection of ?uid in the pleural cavities of the lungs.... hydrothorax

Hydroxocobalamin

Hydroxocobalamin, or vitamin B12, has now replaced CYANOCOBALAMIN in the treatment of pernicious ANAEMIA. It has the practical advantage that fewer injections are required than in the case of cyanocobalamin. Like cyanocobalamin, it belongs to the group of substances known as cobalamins which have an ENZYME action in practically every metabolic system in the body and are essential for normal growth and nutrition. (See APPENDIX 5: VITAMINS.)... hydroxocobalamin

Chloral Hydrate

This drug is now rarely used but chloral betaine (Welldorm) is occasionally used in the elderly and in newborns with ?ts or cerebral irritation after a di?cult delivery.... chloral hydrate

Hydrangea

Hex Breaking... hydrangea

Hydralazine

An antihypertensive drug used principally as an emergency treatment for hypertension.

Hydralazine may cause nausea, headache, dizziness, irregular heartbeat, loss of appetite, rash, and joint pain.

Taken long term in high doses it may cause lupus erythematosus.... hydralazine

Hydrops

An abnormal accumulation of fluid in body tissues or in a sac.... hydrops

Cyclizine Hydrochloride

One of the ANTIHISTAMINE DRUGS which is mainly used for the prevention of sickness, including sea-sickness.... cyclizine hydrochloride

Hydra

(Greek) A constellation; in mythology, a monster killed by Hercules... hydra

Hydradenitis Suppurativa

A chronic in?ammatory disease of the apocrine sweat glands (see PERSPIRATION). It is more common in women – in whom it usually occurs in the armpit – than in men, in whom it is most common in the perineum of the drivers of lorries and taxis. It occurs in the form of painful, tender lumps underneath the skin, which burst often in a week or so. Treatment consists of removal by operation.... hydradenitis suppurativa

Hydragogue

Promoting expulsion of water or serum... hydragogue

Hydrallazine

A vasodilator hypotensive drug, useful as an adjunct to other treatment for HYPERTENSION.... hydrallazine

Hydrocarbamide

A drug used to treat chronic myeloid leukaemia (see MYELOID; LEUKAEMIA).... hydrocarbamide

Hydrocoele

A collection of ?uid connected with the testis (see TESTICLE) or spermatic cord. When there is no obvious cause, it is classi?ed as primary: such hydrocoeles are usually large and tense, and are commonly found in middle-aged and younger men, presenting as a large, painless scrotal swelling. Congenital hydrocoeles may occur in infants, when they are often associated with a hernial sac (see HERNIA). Hydrocoele of the cord is rare. Secondary hydrocoele is generally smaller and lax; it is usually secondary to a tumour or in?ammation of the underlying testis or epididymis.

Treatment Congenital hydrocoeles usually disappear spontaneously and may be safely watched; surgery is only indicated when there is a hernia, or if the condition persists after the ?rst year. Hydrocoeles in adults should be tapped and the testis palpated to exclude primary lesions. Primary hydrocoeles may be managed by intermittent tapping, or, preferably, by surgical removal. Secondary hydrocoeles require treatment of the underlying condition.... hydrocoele

Hydroid

A plant-like member of the class Hydrozoa.... hydroid

Hydrolea Zeylanica

Vahl.

Family: Hydrophyllaceae.

Habitat: Throughout India, in moist and swampy places.

Ayurvedic: Wrongly equated with Laangali. (Laangali is equated with Gloriosa superba Linn.) Known as Ish-languulia (West Bengal).

Action: Leaves and paste— used for callous ulcers. Plant— antiprotozoal.... hydrolea zeylanica

Hydrocotyle Javanica

Thunb.

Family: Umbelliferae; Apiaceae.

Habitat: The Himalayas, Khasi Hills and Western Ghats.

Ayurvedic: Manduukaparni (related species).

Folk: Brahma-manduuki (Sikkim).

Action: Used as a substitute for Centella asiatica, as a blood purifier (in cutaneous diseases); for indigestion, dysentery and nervousness.

The plant is used for treating leuco- derma.

Hydrocotyle rotundifolia Roxb. (throughout India, up to 2,350 m) is also equated with Manduukaparni.... hydrocotyle javanica

Hydromorphone Hydrochloride

A recently introduced opioid analgesic drug used to relieve severe pain in cancer. A controlled drug, it is taken in capsule form or the powder may be sprinkled over soft food.... hydromorphone hydrochloride

Hydrophiidae

The Family name of sea snakes (but not the kraits).... hydrophiidae

Hydrozoa

The taxonomic class including the plume-like hydroids, hard stinging “corals”, small jellyfish with bells (i.e. bell-shaped bodies), and members of the order Siphonophora which may be buoyed up by gaseous floats.... hydrozoa

Mepacrine Hydrochloride

A synthetic acridine product used in the treatment of MALARIA. It came to the fore during World War II, when supplies of quinine were short, and proved of great value both as a prophylactic and in the treatment of malaria. It is now used only to treat infestation with tapeworms (see TAENIASIS).... mepacrine hydrochloride

Methadone Hydrochloride

Also known as Physeptone®, this is a synthetic drug structurally similar to MORPHINE, one of many opioid drugs used to treat severe pain. Methadone is, however, less sedating and has a longer half-life. Furthermore, it is more reliable when taken orally. Although vomiting is common, this is generally less severe than with morphine.

Methadone is valuable as a suppressant for non-productive cough, acting on the medullary ‘cough centre’ in the central nervous system. It is also helpful in weaning addicts o? morphine and heroin, having a slower onset of DEPENDENCE and a less severe withdrawal syndrome. When used for prolonged periods, methadone should not be given more often than twice daily, to avoid the risks of accumulation and opioid overdosage.... methadone hydrochloride

Nefopam Hydrochloride

A non-opioid analgesic drug (see ANALGESICS) of use in the relief of pain that fails to respond to other non-opioid analgesics. It causes little depression of respiration but side-effects may be a problem.... nefopam hydrochloride

Pethidine Hydrochloride

A synthetic analgesic and antispasmodic drug, which is used in the treatment of painful and spasmodic conditions in place of morphine and atropine. A prompt but short-lasting analgesic, it has less of a constipating e?ect than morphine but is less potent. Useful for analgesia during childbirth because it produces less respiratory depression in the baby than other opioids. Pethidine is one of the CONTROLLED DRUGS.... pethidine hydrochloride

Phenazocine Hydrobromide

A powerful analgesic which can be given under the tongue if nausea and vomiting are a problem.... phenazocine hydrobromide

Procainamide Hydrochloride

A derivative of PROCAINE, used to treat certain cardiac arrythmias (irregularities in the heartbeat).... procainamide hydrochloride

Proguanil Hydrochloride

A synthetic antimalarial drug usually used with CHLOROQUINE to prevent infection with MALARIA. Occasionally the drug is used to treat uncomplicated falciparum malaria in combination with atovaquone.... proguanil hydrochloride

Promethazine Hydrochloride

A widely used antihistamine drug with a prolonged action and a pronounced sedative e?ect. (See ANTIHISTAMINE DRUGS.)... promethazine hydrochloride

Polygonum Hydropiper

Linn.

Family: Polygonaceae.

Habitat: Throughout India in wet places.

English: Water Pepper, Pepperwort, Smartweed.

Folk: Paakur-muula, Paani-maricha (Bengal).

Action: Haemostatic, astringent, anti-inflammatory, diuretic, lithotriptic, emmenagogue (used as infusion for delayed menses and amenorrhoea), antifungal (root and leaf used externally). Contraindicated during pregnancy.

The herb contains sesquiterpenes, including warburganal and polygodial, in the leaves; polygonal, isodrimeni- nol, isopolygodial and confertifolin in the seeds; and flavonoids including quercetin, kaempferol, isorhamnetin and rhamnesin; polygonolide (an iso- coumarin).

Isoquercitrin exhibited significant anti-oxidative activity. Polygodial and warburganal possess significant an- tifungal property. Warburganal also possesses potent cytotoxic and antibiotic activity. (The herb is used against cancer.)

Folk: Muniyaaraa (Bihar), Raani- phool, Macheti, Dubiaa Saaga.

Action: Galactogenic, antidiar- rhoeal. Powdered herb is given in pneumonia.

The whole plant yields 11% tannin. The rootstock contains oxymethylan- thraquinone.

Flowers gave oleanolic acid, betulin- ic acid, epi-friedelanol, beta-sitosterol, and flavonoids—quercetin, quercetin- 3-arabinoside and quercetin-3-rutino- side.... polygonum hydropiper

Propranolol Hydrochloride

One of the BETA-ADRENOCEPTOR-BLOCKING DRUGS, propranolol hydrochloride is used in the treatment of ANGINA PECTORIS, myocardial infarction (see under HEART, DISEASES OF), certain abnormal rhythms of the heart, and high blood pressure (HYPERTENSION). It also prevents attacks of MIGRAINE, and is used for certain anxiety states – particularly those associated with unpleasant bodily sensations, such as palpitations. (See also ADRENERGIC RECEPTORS.)... propranolol hydrochloride

Tea For Hydration

Hydration represents the ability of the body to manage water. The optimal hydration is not provided by water only. It should be accompanied by fruit and vegetable consumption. There are some symptoms which come with dehydration: little or no urine or urine that is darker than usual, dry mouth, sleepiness or fatigue, extreme thirst, headache, confusion, feeling dizzy or lightheaded, no tears when crying. How Tea for Hydration works A tea for hydration usually helps the body to keep water within. Efficient Teas for Hydration It has been proved that herbal tea as mint and verbena are efficient for hydration. Mint is a well known plant, due to its ability to soothe the digestive tract. It is appreciated for its flavor and taste, being an important ingredient in the pharmaceutical industry. To prepare Mint tea, infuse 2 tablespoons of dried leaves in a cup of boiling water. After steeping it about 15 minutes, you may enjoy the beverage. As a tea for hydration, Mint tea has been used for centuries all over the planet. It enhances the ability of cells to keep water within for a longer period of time. Verbena is a plant originating from South America (Argentina, Brazil, Peru and Paraguay). It has a lemony scent, being preferred in the perfume industry. In cuisine, verbena could replace oregano, especially in fish and poultry dishes. To prepare Verbena tea , immerse about 2 teaspoons of dried verbena herbs or ¼ teaspoon of fresh leaves and tops into one cup of boiling water. Let the mixture soak and steep for about 5 minutes. Drink it slowly. Honey can be added to enhance flavor. As a tea for hydration, Verbena tea is an adjuvant in keeping water in the human tissues. Tea for Hydration: Side Effects Rarely, teas for hydration may induce diarrhea. In these cases, cease consumption and ask for your doctor’s advice. Teas for hydration are a good choice when the body needs extra hydration and also when the person is on a diet, goes outside on a hot weather or practices sports.... tea for hydration

Gsl Hydrocele

Excessive collection of fluid in the scrotum, the protective covering of the testicles. In infants the condition usually disappears on its own and requires no treatment. In adults, onset is mostly in middle life when it may be withdrawn by needle and syringe. One cause is inflammation of the testicle or of the epididymus.

Treatment. Aspiration or surgery. Pulsatilla is a key remedy. Ellingwood recommends Thuja. Poke root. Pulsatilla: tablets, tincture. Liquid Extract: thrice daily.

Thuja. Tea, liquid extract or tincture. See entry.

Poke root. Tablets, Decoction, liquid extract or tincture. See entry.

Supportives: cold hip bath. Attention to bowels; a laxative may relieve pressure. ... gsl hydrocele

Hydroquinones

Artificial alkaloids. Cramp bark, Uva-Ursi. ... hydroquinones

Aluminium Hydroxide

a safe slow-acting antacid. It is administered (often in combination with magnesium hydroxide) in the treatment of indigestion, gastric and duodenal ulcers, and reflux *oesophagitis.... aluminium hydroxide

Benzydamine Hydrochloride

an anti-inflammatory drug (see NSAID) administered as a mouthwash or spray for the relief of inflammatory ulcerative conditions of the mouth and throat.... benzydamine hydrochloride

Hydraemia

n. the presence in the blood of more than the normal proportion of water.... hydraemia

Hydrotherapy, Colon

 Irrigation of the low bowel.

When elimination of body wastes is held up by a chronically-overloaded bowel general health may suffer. A constipated colon, with accumulations of hard faeces, obstructs peristalsis and loses its ability to evacuate effectively. Toxaemia follows, with gross interference of digestion of food.

As contents putrefy, toxins are re-absorbed, poisoning the blood. Such self-induced disease may lie at the root of sluggish liver function, skin disease, blood pressure, and aches in muscles similating rheumatism.

To clean out a clogged colon, injection of a herbal tea into the rectum not only proves effective but brings about a healthful purgation and release from tension. 2-3oz herb is brought to the boil in 1 gallon water, simmered for one minute, and allowed to cool. The tea is strained when warm and injected.

Enema herbs include: Soapwort, Chamomile, Marshmallow, Catmint, Raspberry leaves, Chickweed. Alternative: 20-30 drops Tincture Myrrh added to boiled water allowed to cool. ... hydrotherapy, colon

Artificial Nutrition And Hydration

the use of enteral feeding tubes or cannulas to administer nutrients and fluids directly into the gastrointestinal tract or bloodstream when the oral route cannot be used owing to disability or disease. When other intensive treatments are judged *futile, artificial nutrition and hydration are considered *extraordinary means of prolonging life in patients who have no prospect of recovery. It is permissible to withdraw such treatment when it is no longer in the patient’s interests and when the primary intention is not to kill the patient, although death is foreseen (see doctrine of double effect). In cases of patients in a *persistent vegetative state in England and Wales, the matter must be referred to the courts following the case of Tony Bland. Where food and water are withdrawn it is still considered important to moisten the patient’s lips and to keep him or her comfortable until death.... artificial nutrition and hydration

Hydrargyria

n. see mercurialism.... hydrargyria

Hydrarthrosis

n. swelling at a joint caused by excessive synovial fluid. The condition usually involves the knees and may be recurrent. Often no cause is apparent; in some cases rheumatoid arthritis develops later. Excess synovial fluid may also occur with other forms of inflammatory arthritis, such as psoriatic and reactive arthritis, as well as with osteoarthritis.... hydrarthrosis

Hydrocalycosis

n. see caliectasis.... hydrocalycosis

Hydrocyanic Acid

(prussic acid) an intensely poisonous volatile acid that can cause death within a minute if inhaled. It has a smell of bitter almonds. See cyanide.... hydrocyanic acid

Hydrogenase

n. an enzyme that catalyses the addition of hydrogen to a compound in reduction reactions.... hydrogenase

Hydrogen Bond

a weak electrostatic bond formed by linking a hydrogen atom between two electronegative atoms (e.g. nitrogen or oxygen). The large number of hydrogen bonds in proteins and nucleic acids are responsible for maintaining the stable molecular structure of these compounds.... hydrogen bond

Hydrolase

n. an enzyme that catalyses the hydrolysis of compounds. Examples are the *peptidases.... hydrolase

Hydroma

n. see hygroma.... hydroma

Hydropericarditis

n. see hydropericardium.... hydropericarditis

Hydropericardium

n. accumulation of a clear serous fluid within the membranous sac surrounding the heart. It occurs in many cases of *pericarditis (hydropericarditis). If the heart is compressed the fluid is withdrawn (aspirated) via a needle inserted into the pericardial sac through the chest wall (pericardiocentesis). See also hydropneumopericardium.... hydropericardium

Hydroperitoneum

n. see ascites.... hydroperitoneum

Hydrophthalmos

n. see buphthalmos.... hydrophthalmos

Hydropneumopericardium

n. the presence of air and clear fluid within the pericardial sac around the heart, which is most commonly due to entry of air during pericardiocentesis (see hydropericardium). The presence of air does not affect the management of the patient.... hydropneumopericardium

Hydropneumoperitoneum

n. the presence of fluid and gas in the peritoneal cavity. This may be due to the introduction of air through an instrument being used to remove the fluid; because of a perforation in the digestive tract that has allowed the escape of fluid and gas; or rarely because gas-forming bacteria are growing in the peritoneal fluid.... hydropneumoperitoneum

Hydropneumothorax

n. the presence of air and fluid in the pleural cavity. If the patient is shaken the fluid makes a splashing sound (called a succussion splash). An *effusion of serous fluid commonly complicates a *pneumothorax, and must be drained.... hydropneumothorax

Hydrosalpinx

n. the accumulation of fluid in one of the *Fallopian tubes due to inflammation and subsequent obstruction, usually as a result of pelvic infection.... hydrosalpinx

Hydrotubation

n. the introduction of a fluid (usually a dye) through the cervix (neck) of the uterus under pressure to allow visualization, by *laparoscopy, of the passage of the dye through the Fallopian tubes. It is used to test whether or not the tubes are blocked in the investigation of infertility.... hydrotubation

Hydroureter

n. an accumulation of urine in one of the tubes (ureters) leading from the kidneys to the bladder. The ureter becomes swollen and the condition usually results from obstruction of the ureter by a stone or a pelvic mass.... hydroureter

Hydroxyapatite

n. 1. a complex phosphate of calcium (Ca5(PO4)3OH) that occurs as a mineral and is the chief structural element of human bone and teeth. Hydroxyapatite crystals may also occur in joints in association with arthritis. 2. a biocompatible ceramic material that is a synthetic form of natural hydroxyapatite. Some joint replacement prostheses are coated with synthetic hydroxyapatite, which encourages bone to grow on to the implant. The material is also used in some forms of middle-ear surgery.... hydroxyapatite

Hydroxycarbamide

(hydroxyurea) n. a drug that prevents cell growth and is used mainly to treat chronic myeloid leukaemia but also to reduce the frequency of sickle-cell crises (see sickle-cell disease). Hydroxycarbamide may lower the white cell content of the blood due to its effects on the bone marrow.... hydroxycarbamide

Hydroxychloroquine

n. a drug similar to *chloroquine, used mainly to treat lupus erythematosus and rheumatoid arthritis (see disease-modifying antirheumatic drug). Side-effects such as skin reactions, headache, and digestive upsets may occur and prolonged use can lead to eye damage.... hydroxychloroquine

5-hydroxyindoleacetic Acid

(5-HIAA) a metabolite of *serotonin, the most common secretion product of *carcinoid tumours. Measured over 24 hours in the urine, this is the most reliable screening test for such tumours.... 5-hydroxyindoleacetic acid

Hydroxyproline

n. a compound, similar in structure to the *amino acids, found only in *collagen.... hydroxyproline

5-hydroxytryptamine

n. see serotonin.... 5-hydroxytryptamine

Hydroxyurea

n. see hydroxycarbamide.... hydroxyurea

Hydroxyzine

n. an *antihistamine drug with sedative properties, used to treat pruritus (itching). It may cause drowsiness, headache, dry mouth, and gastrointestinal upsets.... hydroxyzine

Magnesium Hydroxide

a magnesium salt used as an osmotic *laxative to treat constipation. It is also combined with *aluminium hydroxide in antacid preparations.... magnesium hydroxide

Memantine Hydrochloride

an *NMDA-receptor antagonist drug indicated for treatment of moderate to severe Alzheimer’s-type dementia. Its most common side-effects are dizziness, headache, and constipation.... memantine hydrochloride

Sodium Hydroxide

(caustic soda) a powerful alkali in widespread use as a cleaning agent. It attacks the skin, causing severe chemical burns that are best treated by washing the area with large quantities of water. When swallowed it causes burning of the mouth and throat, which should be treated by giving water, milk, or other fluid to dilute the stomach contents and by gastric lavage.... sodium hydroxide



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