Given a passage and a query based on the passage, generate an unambiguous, concise and simple answer to the query from information in the passage. Note that the answer may not be present in exact form.
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Question: Doctors usually follow up a new diagnosis of atrial fibrillation with additional tests to look for an underlying cause or trigger. These tests may include blood tests, an echocardiogram (an ultrasound of the heart), and/or a chest X-ray. Dr. Leslie Kernisan is the author of a popular blog and podcast at BetterHealthWhileAging.net. She is also a clinical instructor in the University of California, San Francisco, Division of Geriatrics. Atrial fibrillation, also sometimes called A-fib, is usually diagnosed with an electrocardiogram (ECG). An ECG is a noninvasive diagnostic procedure that uses electrodes taped to the skin on the chest to measure the electrical activity within the heart. This information creates a tracing, which can be printed on paper or viewed on a monitor. Occasionally atrial fibrillation is noticed incidentally on an ECG or other heart test. More commonly, doctors order an ECG because a person is having symptoms that could be caused by atrial fibrillation, such as palpitations, a racing heartbeat, dizziness, or shortness of breath. Transtelephonic monitor: When you develop symptoms of atrial fibrillation, a strip of your current heart rhythm can be transmitted to your doctor’s office over the telephone, using a monitor with two bracelets or by placing the monitor against your chest wall. How is atrial fibrillation diagnosed? The most commonly used tests to diagnose atrial fibrillation include: Electrocardiogram (ECG or EKG): The ECG draws a picture on graph paper of the electrical impulses traveling through the heart muscle. An EKG provides an electrical “snapshot” of the heart. For people who have symptoms that come and go, a special monitor may need to be used to capture the arrhythmia. Holter monitor: A small external recorder is worn over a short period of time, usually one to three days. Diagnosing AFib: EKG Your doctor will diagnose atrial fibrillation on an electrocardiogram (EKG). This heart tracing shows a distinct pattern in the electricity of the heart that your doctor can diagnose. If your AFib comes and goes you may need to wear a continuous heart monitor (Holter monitor) to diagnose the abnormal rhythm. Some of the tests used for making an atrial fibrillation diagnosis include: 1  Electrocardiogram (EKG) 2  Holter monitor. 3  Event monitor. 4  Echocardiogram. 5  Blood tests, including thyroid tests. 6  Electrophysiology study (EPS). Atrial fibrillation (AFib) is the most common type of abnormal heart rhythm. Atrial fibrillation or AF can lead to serious heart complications like stroke. Learn about diagnosing and treating AFib. Atrial fibrillation is a risk factor for stroke. About 15 percent of all people who have strokes have AFib. Because of the irregular and chaotic flow of blood through the heart, small blood clots can form in the heart chambers when you have atrial fibrillation. These clots can travel through the bloodstream to the brain, causing a stroke. As part of the medical history, the healthcare provider will ask a number of questions, including questions about: 1  Current symptoms. 2  Medical conditions. 3  Current medications. 4  Family history of medical conditions. 5  Social history, including alcohol use and smoking. Query: how is afib diagnosed ekg

Answer: Your doctor will diagnose atrial fibrillation on an electrocardiogram (EKG). This heart tracing shows a distinct pattern in the electricity of the heart that your doctor can diagnose.


Question: An electrochemical cell consists of two half-cells. Each half-cell consists of an electrode and an electrolyte. The two half-cells may use the same electrolyte, or they may use different electrolytes. Atomic animation and description of what happens in an electrochemical Cu-Zn cell Atomic animation and description of what happens in an electrochemical Cu-Zn cell Skip navigation The electrochemical cells work through the electron flow because of the difference in the voltage of the half-cell reactions. The salt bridge completes the circuit through the flow of ions. The electrochemical cells work through the electron flow because of the difference in the voltage of the half-cell reactions. The salt bridge completes the circuit through the flow of ions. Since the direction is reversed of the voltaic cell, the E 0 cell for electrolytic cell is negative. Also, in order to force the electrons to flow in the opposite direction, the electromotive force that connects the two electrode-the battery must be larger than the magnitude of E 0 cell. Electrochemical Sensors T he oldest electrochemical sensors date back to the 1950s and were used for oxygen monitoring. More recently, as the Occupational Safety and Health Administration (OSHA) began requiring the monitoring of toxic and combustible gases in confined space applications, new and better electrochemical sensors have been developed. An important consideration is that fuel cell oxygen sensors are used up over time. In the cell reaction above, when. all available surface area of the lead (Pb) anode has been converted to lead oxide (PbO), electrochemical activity. ceases, current output falls to zero, and the sensor must be rebuilt or replaced. Fuel cell sensors are designed to. last no more than one to two years. A look at the science behind batteries, including the parts of a battery and how these parts work together to produce an electric current that can be carried in your pocket. A look at the science behind batteries, including the parts of a battery and how these parts work together to produce an electric current that can be carried in your pocket. News Tech A spontaneous electrochemical reaction (change in Gibbs free energy less than zero) can be used to generate an electric current in electrochemical cells. This is the basis of all batteries and fuel cells. The batteries in a flashlight typically have a voltage of 1.5 volts. However, if a flashlight uses two batteries in a series, these batteries, or cells, have a combined voltage of 3 volts. Lead-acid batteries, like the ones used in most nonelectric cars, usually have a voltage of 2.0 volts. Lots of things have an electrochemical cell in them. That electrochemical cell is a battery. You cell phone has at least two of them. There is a small one that keeps alive m … emory if you remove the primary battery. A flashlight has a cell or cells in it. We could go on all day. Motor vehicles have a battery, which is a collection of electrochemical cells.. Query: how does an electrochemical cell work

Answer: The electrochemical cells work through the electron flow because of the difference in the voltage of the half-cell reactions.


Question: How long is THC detectable in urine? If you are a chronic marijuana user, THC can be detected in your system using a urine test for up to 12 weeks depending on the quantity as well as frequency of use. Note that if you just used marijuana once and stopped, the odds of passing a test within the first week are decent but you can still test positive for up to 30 days. The second is your level of hydration. The more fluids you ask your body to process, and the more urine you thus produce, the quicker THC metabolites will leave your body. Summing Up: How Long Does THC Stay In Your Urine? Drug urine tests for weed have all kinds of shortcomings and inadequacies. Setting aside for a moment the totally legitimate criticisms of workplace drug screenings, and debates about the efficacy and accuracy of the tests and the generally humiliating, privacy-invading feel of the whole operation, let’s drill down into one simple question: how long does THC stay in your urine? Overview: It’s… Complicated So how long does weed stay in your system? When it comes to saliva and blood, where active THC resides, weed stays in the body for a week, tops. But with urine, weed stays in your system much longer. So again, how long does weed stay in your system? It depends what the system deals with, THC or its waste metabolite, THC-COOH. If the system deals with active, or delta-9 THC, weed doesn’t stay around for very long. But if the system deals with eliminating inactive THC-COOH, weed sticks around for a longer time. Overview: How Long Does Weed Stay In Your System? Whether you’re new to cannabis and curious about how long the effects last and how long weed stays in your system, or facing a drug screening of some kind, knowing the specific ways weed interacts with your body and where signs of your using it show up is valuable information. THC has been found to be immediately detectable, with blood levels of THC reaching a peak at around 9.0 minutes into smoking. In the referenced study, it took between 3 to 12 hours for THC to drop below detection limits for the low-dose group and from 6 to 27 hours for the high-dose group of the study. However, the subjects of this study were not regular marijuana smokers, which explains why THC levels fell so quickly. If you are trying to pass a marijuana drug test of any sort, it is important that you understand how long it can remain detectable in your body. As five of these metabolites, with THC-COOH being the primary one, are targeted by a multi-billion dollar drug testing industry that specializes in trying to make a buck off of invading your privacy at every corner. This is type of test is used to detect current usage of drugs such as marijuana. It also helps to investigate car/work accidents. After a single use of marijuana, the blood test can produce positive results for 6-24 hours. However, for regular users, a blood test can produce positive results for up to 7 days or more. How long does THC stay in your urine after you eat edibles compared with smoking or vaping weed? Considering how different an edibles high can feel next to a high from smoking weed, one might expect the THC levels in urine to vary. In truth, they do. Edibles will make THC stay in your urine a bit longer, from several hours to an extra day. Query: how long does marijuana stay in urine?

Answer:
Marijuana stays up to 12 weeks in urine.


