define sensitivity on a pacemaker
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Sensitivity and Output Settings of the Temporary Pacemaker Sensitivity and sensitivity threshold. The electrodes do not only pace, they also sense the electrical activity at the myocardial surface. One can define the sensitivity of a pacemaker electrode as the minimum myocardial voltage required to be detected as a P wave or R wave, measured in mV. The sensitivity of the pacemaker is actually a setting on the box, where the lower the number, the more sensitive the pacemaker.
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Sensitivity and specificity Sensitivity and specificity. Sensitivity and specificity are concepts used to assess a clinical test. Sensitivity is a measure that determines the ability of a test to correctly classify an individual as sick or diseased. Specificity is a measure of the ability of a test to correctly classify an individual as healthy or disease-free. Parikh and others reckons that sensitivity and specificity are inversely proportional, which means that as the value of sensitivity increases, the value of specificity decreases and vice versa.
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DDD pacemaker cardiac pacemaker a small mass of specialized muscle tissue in the heart that sets a rhythm of contraction and relaxation for the other parts of the heart, resulting in the heartbeat. Usually the pacemaker site is the sinoatrial node, near the junction with the superior vena cava.
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Assay sensitivity Assay sensitivity is a property of a clinical trial defined as the ability of a trial to distinguish an effective treatment from a less effective or ineffective intervention. Without assay sensitivity, a trial is not internally valid and is not capable of comparing the efficacy of two interventions.
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- Pacemaker Failure to Sense In most cases, sensing problems are less threatening and can be corrected by performing a pacemaker interrogation. Sensing problems include “undersensing” where the pacemaker fails to sense the native cardiac rhythm.
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- The sensitivity list is a list of signals. A change in value on one or more of these signals, causes the process to be activated: process (ALARM_TIME, CURRENT_TIME) begin if (ALARM_TIME = CURRENT_TIME) then SOUND_ALARM <= '1'; else SOUND_ALARM <= '0'; end if; end process;
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Definitions &Translations Applications include cars, machines, aerospace, medicine, manufacturing and robotics. A sensor is a device which receives and responds to a signal when touched. A sensor's sensitivity indicates how much the sensor's output changes when the measured quantity changes. For instance, if the mercury in a thermometer moves 1 cm when the temperature changes by 1 °C, the sensitivity is 1 cm/°C.
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Sensor A sensor's sensitivity indicates how much the sensor's output changes when the input quantity being measured changes. For instance, if the mercury in a thermometer moves 1 cm when the temperature changes by 1 °C, the sensitivity is 1 cm/°C (it is basically the slope Dy/Dx assuming a linear characteristic).
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Headphones Sensitivity is a measure of. how likely it is for a test to pick up the presence of a disease in a person who has it. Specificity: We define specificity as the probability that the test says a person does not have the. disease when in fact they are disease free. This is ()|.
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Pacemaker A pacemaker is a small device that's placed in the chest or abdomen to help control abnormal heart rhythms. This device uses electrical pulses to prompt the heart to beat at a normal rate. Pacemakers are used to treat arrhythmias (ah-RITH-me-ahs). Arrhythmias are problems with the rate or rhythm of the heartbeat. During an arrhythmia, the heart can beat too fast, too slow, or with an irregular rhythm.
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Our services: quick view In addition, each section of the Pulmonary Services department (Diagnostics, Therapeutics, Pulmonary Rehabilitation) has passed a national certification review indicative of the highest standard of care for the population served.
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pacemaker rate responsive pacemaker an artificial cardiac pacemaker that can deliver stimuli at a rate adjustable to some parameter independent of atrial activity. runaway pacemaker a malfunctioning artificial cardiac pacemaker that abruptly accelerates its pacing rate, inducing tachycardia.
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- Medical Definition of pacemaker. 1  1: a group of cells or a body part (as the sinoatrial node of the heart) that serves to establish and maintain a rhythmic activity. 2  2: an electrical device for stimulating or steadying the heartbeat or reestablishing the rhythm of an arrested heart—called also pacer.
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- For more information, please refer to the application diagram in the device data sheet. 3.3 Phase Sensitivity (0.45 V / 0.9 V / 1.35 V / 1.8 V) Phase sensitivity is linked to the phase signal voltage level coming from the stator windings. Phase signals are naturally out of phase by 120°.
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What is Perfusion Index (PI) Perfusion Index or PI is the ratio of the pulsatile blood flow to the non-pulsatile static blood flow in a patient's peripheral tissue, such as finger tip, toe, or ear lobe. Perfusion index is an indication of the pulse strength at the sensor site.
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What is 'Sensitivity' What is 'Sensitivity'. Sensitivity is the magnitude of a financial instrument's reaction to changes in underlying factors. Financial instruments, such as stocks and bonds, are constantly impacted by many factors. Sensitivity accounts for all factors that impact a given instrument in a negative or positive way in an attempt to learn how much a certain factor impacts the value of a particular instrument.
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- Sensitivity definition, the state or quality of being sensitive; sensitiveness. See more.
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Mouse DPI and Polling Rates Explained: Do They Matter for Gaming? DPI refers to a mouse’s hardware capabilities, while sensitivity is just a software setting. For example, let’s say you have a very cheap mouse with low DPI and you crank up the sensitivity. If you tried to aim at small targets, you’ll see the mouse cursor jump around as you move it.
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Push processing When a film's effective sensitivity has been varied, the resulting sensitivity is called the exposure index; the film's speed remains at the manufacturer's indication. For example, an ISO 200/24° film could be push processed to EI 400/27° or pull processed to EI 100/21°.
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Transcutaneous pacing 1 Undersensing: when a pacemaker fails to detect intrinsic activity, and therefore delivers a pace pulse. 2  Oversensing is inappropriate inhibition of the pacemaker due to detection of signals other than R waves (e.g. muscle artifact).  Pacing thresholds may change without warning and capture can readily be lost.
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sensitivity sensitivity - the ability to respond to physical stimuli or to register small physical amounts or differences; a galvanometer of extreme sensitivity; the sensitiveness of Mimosa leaves does not depend on a change of growth
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Description Pacemaker Rhythms - Failure (Loss) to Capture. Description. When a pacemaker loses its ability to cause depolarization (capture), the inherent rhythm of the patient will become present within the tracing. As mentioned earlier in this presentation you will note the presence of a pacing spike, but you will not see a waveform immediately following it.
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Guide to Speaker Specifications Basically Sensitivity is the speakers’ ability to efficiently use the amplifiers energy to create sound. This spec is rated in decibels (dB), but how it’s measured is also important to know. Consider a speaker with a Sensitivity Rating of 87 dB. The standard for achieving this rating is 1 watt/1 meter.
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Cardiac pacemaker In heart pacemaker cells, phase 0 depends on the activation of L-type calcium channels instead of the fast Na + current. The action potentials in autorhythmic cells are caused by the large influx of calcium ions not sodium ions like in contractile cells (threshold -40mV).
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Pacemaker for Bradycardia Treatment Overview. A pacemaker is a small battery-powered device that sends weak electrical impulses to set a pace so that the heart is able to keep a regular heartbeat. There are different types of pacemakers, so your doctor will work with you to decide what kind will be best for you.
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Minelab E-Trac Manual vs Auto Sensitivity In the video you will see that manual sensitivity 16 is deep as automatic sensitivity 23. There is no logic at all but it is a fact. The E-Trac is probably the deepest induction balance metal detector, but only if you use it in manual sensitivity mode.heck this video, if you want to see how important is to use your E-Trac only in manual sensitivity mode.