Left to right shunt Health Dictionary

Left To Right Shunt: From 1 Different Sources


A term used when a hole in the septum (internal wall) of the HEART allows blood to ?ow from the systemic circulation properly con?ned to the left side of the heart to the pulmonary circulation, con?ned to the right. The shunt is usually detected by hearing a murmur, and the diagnosis con?rmed by ECHOCARDIOGRAPHY (see also SEPTAL DEFECT).
Health Source: Medical Dictionary
Author: Health Dictionary

Shunt

Passage of blood through a channel that is not its normal one. This may occur as a result of a congenital deformity (see SEPTAL DEFECT) or of surgery – for example, a porto-caval shunt in which the main portal vein is joined up to the inferior vena cava.... shunt

Heart – Left Ventricular Failure (lvf)

Failure of the left ventricle to receive blood from the pulmonary circulation and to maintain efficient output of incoming blood to the arterial system. Failure to do so leads to congestion of blood in the lungs followed by fluid retention. If uncorrected, leads to kidney disturbance, low blood pressure, cyanosis (blueness of the skin). Onset may be tragically sudden.

Failure of the left ventricle may occur in cases of pericarditis, disease of the aortic valve, nephritis or high blood pressure.

Left ventricular failure is often of sudden onset, urgent, and may manifest as “cardiac asthma”.

Causes: blood clot, anaemia, thyroid disorder, coronary disease, congenital effects, drug therapy (beta blockers, etc), and to fevers that make heavy demands on the left ventricle.

Symptoms: breathlessness, wheezing, sweating, unproductive cough, faintness, bleeding from the lungs, palpitation. Cardiac asthma at night: feels he needs air; better upright than lying flat. Exertion soon tires. Sensation as if heart would stop. Blueness of lips and ears from hold-up in circulation of the blood through the lungs. Frequent chest colds. Awakes gasping for breath. Always tired. Cold hands and feet. Symptoms abate as compensation takes place. ‘Cream and roses’ complexion. The failure of left ventricle soon drags into failure of the right ventricle.

Right ventricular failure leads to congestive heart failure, with raised venous pressure in neck veins and body generally, causing oedema, ascites and liver engorgement.

Treatment. Agents to strengthen, support, and eliminate excess fluids from the body. BHP (1983) advises four main remedies: Hawthorn, Motherwort, Broom and Lily of the Valley. The latter works in a digitaloid manner, strengthening the heart, contracting the vessels, and lessening congestion in the lungs. Tinctures. Hawthorn 2; Stone root 1. Lily of the Valley 1. Dose: 15-45 drops thrice daily.

Broom tea. 2 teaspoons flowers, or 2-3 teaspoons tops and flowers, in cup water brought to boil and simmered one minute. 1 cup freely.

To remove fluid retention in the lungs, diuretics are indicated; chief among which is Dandelion root because of its high potassium content to prevent hypokalaemia. Dandelion coffee. As urinary excretion increases, patient improves.

Vitamin E. Not to be taken in left ventricular disorders.

Diet. See entry: DIET – HEART AND CIRCULATION.

UK Research. Researchers found that left ventricular failure was reduced by a quarter when patients were given magnesium intravenously for the first 24 hours after admission to the coronary care unit. They conclude that it should be given before any other heart therapy is commenced, and that patients should receive regular infusions if no other drug treatment is used. (The Lancet, 2.4.1994). This supports the use of magnesium sulphate (Epsom’s salts) by a past generation of herbal practitioners for the condition. ... heart – left ventricular failure (lvf)

Hypoplastic Left-heart Syndrome

A very serious form of congenital heart disease (see heart disease, congenital). The baby is born with a poorly formed left ventricle, often associated with other heart defects. The aorta is malformed and blood can reach it only via a duct (the ductus arteriosus) that links the aorta to the pulmonary artery.

At birth, the baby may seem healthy. However, within a day or 2 the ductus arteriosus naturally closes off and the baby collapses, becoming pale and breathless. In most cases, hypoplastic left-heart syndrome cannot be treated surgically, and most affected babies die within a week. A few infants have been treated with heart transplants.... hypoplastic left-heart syndrome

Gott Shunt

a heparin-bonded shunt used to bypass sections of aorta that are being operated on. It is one of several shunts used in operations on the heart and arteries.... gott shunt

Hypoplastic Left Heart

a congenital heart disorder in which the left side of the heart, particularly the left ventricle, is underdeveloped. The first part of the aorta may also be abnormal. Affected babies usually develop severe heart failure within the first few days of life. Diagnosis can be confirmed on *echocardiography. Prognosis is generally very poor – most babies die within the first few weeks – but milder cases may be amenable to surgery. It is the commonest cause of death in the neonatal period due to heart disease.... hypoplastic left heart

Left Ventricular Failure

see heart failure.... left ventricular failure

Shunt Nephritis

nephritis associated with infected indwelling shunts. The infection is usually with staphylococci (S. epidermidis) and patients present with anorexia, malaise, arthralgia, and low-grade fever. Purpura, anaemia, and hepatosplenomegaly may be found and urine analysis shows heavy proteinuria, often with a *nephrotic syndrome and haematuria. Treatment usually involves removal of the infected shunt as well as antibiotics.... shunt nephritis

Ventriculoperitoneal Shunt

see shunt.... ventriculoperitoneal shunt



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