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best heart doctors An 83-year-old man was evaluated for frequent palpitations. During an episode, examination of the neck revealed rapid and regular pulsations with bulging of the internal jugular veins .A 12-lead electrocardiogram was obtained and showed a regular, narrow-complex tachycardia, with narrow P waves deforming the terminal QRS complex (Panel A, arrowheads). The P wave is negative in the inferior leads (forming a pseudo-S wave) and positive in lead V1 (forming a pseudo-r′ wave). On the application of pressure to the carotid sinus, the tachycardia and the bulging of the internal jugular veins were resolved .and sinus rhythm was restored. The characteristics of the arrhythmia were suggestive of atrioventricular nodal reentrant tachycardia, a functional reentrant arrhythmia localized to the AV junction. In its typical form, anterograde conduction occurs over the slow pathway to the ventricle, while near-simultaneous atrial activation occurs over the fast pathway of the AV node. These events lead to the parallel electrical activation of the atria and ventricles. Canon A waves result from the simultaneous contraction of the atria and ventricles against closed atrioventricular valves, causing a reflux of blood into the neck veins.
HEART SPECIALISTS IN SILKBOARD Complex congenital heart disease: conduits Anatomy and physiology Babies with a very abnormal right ventricular outflow tract such as pulmonary atresia can have a conduit fashioned to direct blood from the systemic veins more directly to the pulmonary arterial circulation or from a systemic artery to the pulmonary circulation. These conduits are made from veins or occasionally from Gortex. 368 PRACTICAL CARDIOLOGY Complications Conduits of all types have a limited life and tend to deteriorate after 10 years. These patients are also at risk of ventricular arrhythmias and heart block. Follow-up Patients need regular expert echocardiography to assess the conduit function. The conduit may deteriorate significantly before symptoms occur. Further treatment Conduit deterioration is usually an indication for further surgery although it can occasionally be treated with balloon dilatation. Pregnancy and contraception Pregnancy is well tolerated in patients with good conduit function. There are no particular problems with contraception. Sports Patients should avoid competitive and contact sports.
Hypertensive retinopathy I Silver wiring of arteries II AV nipping (sclerotic arteries pressing on veins) III Haemorrhages and exudates IV Papilloedema associated with encephalopathy
Hypertensive retinopathy I Silver wiring of arteries II AV nipping (sclerotic arteries pressing on veins) III Haemorrhages and exudates IV Papilloedema associated with encephalopathy
Cardiology is a branch of medicine dealing with disorders of the heart as well as parts of the circulatory system. The field includes medical diagnosis and treatment of congenital heart defects, coronary artery disease, heart failure, valvular heart disease and electrophysiology. Physicians who specialize in this field of medicine are called cardiologists, a specialty of internal medicine. Pediatric cardiologists are pediatricians who specialize in cardiology.
Stress Echocardiogram What is a Stress Echo Test? A Stress Echo is a non-invasive combination of a Treadmill Stress Test and an Echocardiogram (ECHO). The Treadmill Stress Test is a test that records the heart’s electrical activity (rate and rhythm) during exercise. The echocardiogram is a device that uses sound waves (ultrasound) to provide an image of the heart’s internal structure, size and movement. Why is a Stress Echo Test Done? This test helps the physician evaluate the patient’s cardiac condition in relation to: Irregular heart rhythms If there is a decrease in blood and oxygen supply to the heart at rest and with exertion Level of cardiovascular conditioning Workload the heart can accept before symptoms develop How quickly the heart recovers from the exercise What is Involved in Preparation? Eat only a light meal prior to the test No caffeine or smoking prior to the test Some important questions to ask your physician prior to the test are: Should your regular medications be taken the morning/day of the test? If you are on a Beta Blocker, should this be stopped 72 hours prior to the test for best results? Do not apply any lotions, powders or oils to the chest area Wear comfortable clothes and walking or athletic shoes
the best doctors near me Thrombocytopenia is a condition in which you have a low blood platelet count. Platelets (thrombocytes) are colorless blood cells that help blood clot. Platelets stop bleeding by clumping and forming plugs in blood vessel injuries. Thrombocytopenia often occurs as a result of a separate disorder, such as leukemia or an immune system problem. Or it can be a side effect of taking certain medications. It affects both children and adults. Thrombocytopenia may be mild and cause few signs or symptoms. In rare cases, the number of platelets may be so low that dangerous internal bleeding occurs. Treatment options are available. Symptoms Petechiae on leg and abdomen Petechiae Thrombocytopenia signs and symptoms may include: Easy or excessive bruising (purpura) Superficial bleeding into the skin that appears as a rash of pinpoint-sized reddish-purple spots (petechiae), usually on the lower legs Prolonged bleeding from cuts Bleeding from your gums or nose Blood in urine or stools Unusually heavy menstrual flows Fatigue Enlarged spleen Jaundice
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