lead(redirected from aVR lead)
Also found in: Dictionary, Thesaurus, Legal, Financial, Encyclopedia, Wikipedia.
Related to aVR lead: chest leads, unipolar leads, precordial leads, aVF lead
lead (Pb),(led), Do not confuse this word with the verb led (past tense of lead).
lead(Pb) (led) a chemical element, at. no. 82. Absorption or ingestion causes poisoning, which affects the brain, nervous and digestive systems, and blood.
lead(lēd) any of the conductors connected to the electrocardiograph, each comprising two or more electrodes that are attached at specific body sites and used to examine electrical activity by monitoring changes in the electrical potential between them.
Epidemiology Inorganic lead sources—gasoline, old paint, workplace chemicals, burning car batteries, ‘moonshine’ liquor distilled in tubing soldered with lead, foods, beverages
Lab Red cells with coarse basophilic stippling, anaemia, reticulocytosis, erythroid hyperplasia, autofluorescence of red cells and erythroid precursors
Nontoxic range Serum < 10 µg/dL4; urine < 100 µg/24 hr Toxic range > 25 µg/dL
Management Chelation—e.g., dimercaprol, calcium EDTA, d-penicillamine, succimer
leadToxicology pronounced Lead, as in dead A heavy metal that paints a broad clinical palette Epidemiology Inorganic lead sources–gasoline, old paints, burning car batteries, 'moonshine' liquor distilled in tubing soldered with lead, foods, beverages Lab RBCs with coarse basophilic stippling, anemia, reticulocytosis, erythroid hyperplasia, autofluorescence of RBCs and erythroid precursors Clinical–chronic poisoning Neuromuscular disease with wrist drop and encephalopathy–convulsions, mania, delirium, paresis, paralysis, abdominal colic, nausea, constipation, weight loss, fatigue, headache, tremor, myalgia, loss of concentration, Fanconi syndrome, aminoaciduria, glycosuria, fructosuria, phosphaturia, protoporphyria-like symptoms, HTN Nontoxic range Serum < 10 µg/dL; urine < 100 µg/24 hr Toxic range > 25 µg/dL Management Chelation–eg, dimercaprol, calcium EDTA, d-penicillamine, succimer. See Lead crystal, Lead line, Lead poisoning, Port Pirie Cohort Study, Saturnine gout, Succimer.
leadpronounced Leed, as in deed Cardiac pacing Catheter, wire The 'deployment' part of a pacemaker, which has 3 components–the wire(s) which carry the electrical signals and pulses to and from the heart, a connector pin and stimulating/sensing electrode(s). See Active fixation lead, Atrial lead, Coaxial lead, Endocardial lead, Inferior lead, Low-threshold lead, Myocardial lead, Permanent lead, Silicone lead, Sprint™ tachyarrhythmia lead, Steroid eluting lead, Temporary lead, Ventricular lead Cardiology Any specific site for placing electrodes on an EKG Standard 12-lead EKG 3 bipolar limb leads–I, II, III, 3 augmented unipolar limb leads–aVR, aVL, aVF, 6 precordial leads–V1-V6 Pharmaceutical industry A candidate unknown substance with properties that suggest to industry experts therapeutic properties.
Patient discussion about lead
Q. Does lead harm fetuses?
i hope i'm not the bearer of bad news...
Q. What are the chances that chronic depression leads to schizophrenia? Someone close to me has been battling depression for 17 years now. She is doing a good job, has held on to a demanding job for 4 years now. Though her performance at work are highly erratic. Periods of poor apathetic performance interspersed with periods of high performance. She shows symptoms of chronic depression, withdraws from social life, has low energy, can spend days in bed, is messy etc. She's on medication too. I fear that the next phase will be schizophrenia
I am not an expert on depression, but I don't think it leads to schizophrenia. Not exercising can certainly lead to other health problems. Everything can go into the death spiral if you just ignore everything and quit taking care of yourself.
You mentioned this was about a friend. So maybe, you have to do what a real friend needs to do. Some people will not help themselves and will let others do everything for them. If that's the problem, saying NO may be just the thing to get them to do things for themselves, like they should be doing. So if you are babying your friend, then maybe that's not really in their best interest. I don't know what's really gong on in your situation. So my suggestions could be way off. Its impossible for me to understand it with just the few w
Q. What are the leading causes of depression and anxiety in women today? Females suffer from anxiety and depression at twice the rate of men. In fact, mental disorders such as anxiety and depression are the leading cause of disability for women. What are the leading causes of anxiety and depression in women? Please provide as credible sources as possible. Thank you.