Abnormal eeg waves

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☑️ What causes abnormal q waves?

Background: Abnormal Q waves (AQW) in the electrocardiogram are commonly ascribed to underlying myocardial infarction (MI). As an imperfectly specific sign of MI, the usefulness of AQW in identifying MI depends on its incidence in the population studied.

☑️ What causes abnormal brain waves?

  • An abnormal EEG result can result from a number of causes, including epilepsy and seizures, brain tumors, head injuries, and degenerative disorders.

☑️ What are abnormal inverted t waves?

  • Inflammatory causes. Acute myocarditis and acute myopericarditis can present with a range of ECG abnormalities,including ST-segment elevation and T-wave inversion.
  • Neurogenic causes. There are a number of neurogenic causes of primary T-wave inversions…
  • Left ventricular hypertrophy by voltage…

☑️ What do abnormal p waves indicate?

An abnormal P wave may indicate atrial enlargement. Atrial depolarization follows the discharge of the sinus node. Normally depolarization occurs first in the right atrium and then in the left atrium. Atrial enlargement is best observed in the P waves of leads II and V1.

☑️ What do abnormal q waves mean?

  • Pathological (abnormal) Q waves are defined as greater than one third the height of the R wave, greater than 0.04 sec (40 msec) in duration, or present in the right precordial leads. Over the next few hours the ST segments return to normal and, shortly afterwards, the T waves become inverted but Q waves remain.

Video from Abnormal eeg waves

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Video answer: R-wave progression and measurement of ecg paper

R-wave progression and measurement of ecg paper

Video answer: 12 lead interpretation part 3: r-wave progression, electrical vectors & axis deviations

12 lead interpretation part 3: r-wave progression, electrical vectors & axis deviations

Video answer: Understanding ecg/ekg: qrs transitional zone and r wave progression explained, animation

Understanding ecg/ekg: qrs transitional zone and r wave progression explained, animation

Video answer: R wave progression on ecg

R wave progression on ecg

Top 6042 questions from Abnormal eeg waves

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What does abnormal t wave mean?

The electrocardiographic T wave represents ventricular repolarization. Abnormalities of the T wave are associated with a broad differential diagnosis and can be associated with life-threatening disease or provide clues to an otherwise obscure illness.

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Which wave of eeg indicates the alertness of brain?

Explanation: The alpha rhythm is the principal component of the EEG and is an indicator of the state of alertness of the brain.

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What causes an abnormal t wave reading?

Primary T-wave abnormalities (ischemia or injury) are due to alterations in myocardial cellular electrophysiology and secondary T-wave abnormalities (bundle branch block or ventricular Hypertrophy) are subsequent to alterations of sequence of ventricular activation.

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What is abnormal st t wave changes?

  • T -wave abnormalities may not necessarily indicate the presence of a severe heart condition. There are non-specific wave changes that result from common, non-specific causes of T-wave abnormality which includes the following: No obvious causes, which are usually associated with women. Fever. Metabolic Changes. Acidosis or Alkalosis .

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What does abnormal r wave progression mean?

Abstract. Poor R-wave progression is a common ECG finding that is often inconclusively interpreted as suggestive, but not diagnostic, of anterior myocardial infarction (AMI).

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What does an abnormal p wave indicate?

An abnormal P wave may indicate atrial enlargement. Atrial depolarization follows the discharge of the sinus node. Normally depolarization occurs first in the right atrium and then in the left atrium. Atrial enlargement is best observed in the P waves of leads II and V1.

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What does an abnormal q wave indicate?

Pathologic Q waves are a sign of previous myocardial infarction. They are the result of absence of electrical activity. A myocardial infarction can be thought of as an elecrical 'hole' as scar tissue is electrically dead and therefore results in pathologic Q waves.

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What does an abnormal t wave mean?

  • Abnormal T wave can be an indication of some pathological conditions mainly related to heart. Upon finding changes in the T wave, the main aim is to treat the underlying condition. Once the condition is treated T wave abnormality will disappear.

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Can anxiety cause an abnormal t wave?

A study by Whang et al. (2014) showed that depressive and anxious symptoms were associated with abnormalities in T wave inversions.

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Should i worry about abnormal t wave?

I. Problem/Condition.

Abnormalities of the T wave are associated with a broad differential diagnosis and can be associated with life-threatening disease or provide clues to an otherwise obscure illness.

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What is an abnormal st t wave changes?

if it is present in more than 2 leads then it is a sign of ischemia

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When is an inverted t wave considered abnormal?

  • Inverted T wave. Inverted T wave is considered abnormal if inversion is deeper than 1.0 mm. Inverted T waves found in leads other than the V1 to V4 leads is associated with increased cardiac deaths.

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What can cause an abnormal t wave reading?

Primary T-wave abnormalities (ischemia or injury) are due to alterations in myocardial cellular electrophysiology and secondary T-wave abnormalities (bundle branch block or ventricular Hypertrophy) are subsequent to alterations of sequence of ventricular activation.

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What causes abnormal are wave progression in ecg?

  • Abnormal R-wave progression is a common finding which may be explained by any of the following conditions: Myocardial infarction: necrotic myocardium does not generate electrical potentials and therefore there is a loss of R-wave amplitude in the ECG leads reflecting the necrotic area ( Figure 10]

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What does an abnormal p wave look like?

The Abnormal P wave

If the p-wave is enlarged, the atria are enlarged. If the P wave is inverted, it is most likely an ectopic atrial rhythm not originating from the sinus node. Altered P wave morphology is seen in left or right atrial enlargement.

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What does abnormal r wave progression late transition mean?

  • What does abnormal R wave progression late transition mean? Poor or late R-wave progression consists of a transition zone in lead V5 or V6, and it can be a sign of a previous anterior myocardial infarction. Click to see full answer.

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Can a standard ecg record an abnormal heart rhythm?

  • A standard ECG can record an abnormal heart rhythm only if it happens during the test. Some abnormal heart rhythms come and go, so your doctor may have you undergo a different type of heart rhythm monitoring, such as with a Holter monitor, to help diagnose the cause of your symptoms.

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What are the symptoms of an abnormal t wave?

  • Even then, some abnormal T-waves symptoms and signs to watch out for are. Chronic and intense chest pain. Severe Headaches. Chronic Fatigue . Coughing Uncontrollably. Experience heart palpitations for no reason. Difficulty Breathing. General body weakness.

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What does an abnormal q wave on ecg mean?

Remember that Q waves can be normal or abnormal. When abnormal, they indicate the presence of an ongoing or an old myocardial infarction. The ECG findings of a pathologic Q wave include a Q wave duration of > 40 milliseconds (one small box) or size > 25% of the QRS complex amplitude.

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What does an abnormal your wave mean in an ekg?

  • A left anterior fascicular block may be associated with a heart attack. R waves are the upward spikes displayed on an electrocardiogram. Common R Wave abnormalities on an ECG include a thin chest wall or obesity.

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What does an abnormal t wave on an ecg mean?

Inverted T wave is considered abnormal if inversion is deeper than 1.0 mm. Inverted T waves found in leads other than the V1 to V4 leads is associated with increased cardiac deaths. Inverted T waves associated with cardiac signs and symptoms (chest pain and cardiac murmur) are highly suggestive of myocardial ischaemia.

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Are sound waves transverse waves or longitudinal waves?

Generally, sound is classically defined as longitudinal waves in a medium.However, sound can also behave as a transverse wave in solids

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Are surface waves compression waves or transverse waves?

First, it's not called compression wave but a longitudinal wave, second, neither and both because it's a mix of both. For it looks like a transvers, but moves in circles like a longitudinal wave.

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Can a abnormal t wave be a sign of heart disease?

  • Abnormal T wave can be an indication of some pathological conditions mainly related to heart. Upon finding changes in the T wave, the main aim is to treat the underlying condition. Once the condition is treated T wave abnormality will disappear.

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What happens when you have a abnormal wave on a ekg?

Abnormality can be due to abnormal heart rhythms or cardiac muscle defects.

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Are sound waves longitudinal waves?

Yes. Sound waves are longitudinal waves.

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Are radio waves mechanical waves?

Water waves and sound waves are examples of mechanical waves… Other electromagnetic waves include the microwaves in your oven, radio waves, and X-rays.

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Which waves are longitudinal waves?

  • sound waves.
  • ultrasound waves.
  • seismic P-waves.

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Which waves are compressional waves?

P waves are also known as compressional waves, because of the pushing and pulling they do. Subjected to a P wave, particles move in the same direction that the the wave is moving in, which is the direction that the energy is traveling in, and is sometimes called the 'direction of wave propagation'.

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Are light waves compression waves?

  • compression occur when the particles are closer than normal to each other while rarefaction occur when particles are farther than normal to each other. Ocean and light waves are transverse waves and do not contains compressions and rarefactions.

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Is s waves transverse waves?

'S' is a common designator which refers to a transverse body wave.

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Are sound waves really waves?

Sound waves traveling through air are indeed longitudinal waves with compressions and rarefactions. As sound passes through air (or any fluid medium), the particles of air do not vibrate in a transverse manner. Do not be misled - sound waves traveling through air are longitudinal waves.

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Are seismic waves compression waves?

There are four types of seismic waves, the P-wave, S-wave and the Love and Rayleigh waves. Of these four types, the P-wave is a longitudinal / compression wave.

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Are light waves electromagnetic waves?

Usually when one says light waves, one is referring to Visible light. Any light wave, and hence visible light, is an electromagnetic wave. As an electromagnetic wave, it is also a transverse wave. The oscillating electric and magnetic fields of an electromagnetic wave in free space are oscillating with a direction perpendicular yo the direction of movement of the wave. The velocity of an electromagnetic wave is the sped of light. This is a sensible things since light is an electromagnetic wave. In a vacuum all electromagnetic waves travel at the same speed. In matter, if the matter allows an electromagnetic wave to propagate, the speed is slower than the speed of light and in optics we say the speed is reduce by the index of refraction, v=c/n. Electromagnetic waves, like all waves, have velocity, wavelength, frequency, amplitude and phase. As with all transverse waves, electromagnetic waves can be polarized, or we say, have a polarization. Electromagnetic waves have electric and magnetic fields that are sinusoidal in space and time. These electromagnetic fields satisfy Maxwell's equations, i.e. the fundamental laws of electromagnetism. There is a quantum version of electromagnetic theory called electrodynamics and that theory is the necessary edification of Maxwell's equations to describe the quantum nature of light. Thus, even when we are discussing light as photons, it is correct to say light is an electromagnetic wave as such is manifested within quantum electrodynamics.

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Are pressure waves longitudinal waves?

Longitudinal waves travel in a medium due to alternate compression & rarefactions ie. they travel due to variation in pressure.

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Are light waves longitudinal waves?

No, light waves are not longitudinal waves. Light is an example of a transverse wave, like a wave moving across the surface of water. Sound or seismic waves are examples of longitudinal waves.

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Are sound waves circular waves?

  • When the airplane is flying below Mach 1, the sound waves it generates form a circular shape as a whole. However, when the airplane exceeds Mach 1, then the sound waves it generates form a conical shape as a whole. This is explained by the "falling behind" phenomena, mentioned above in the second paragraph.

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Are surface waves compression waves?

No. surface waves on the surface of water is transverse in nature. It has crests and troughs. Compression and rarefaction will be in longitudinal wave. example sound waves.

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What waves are electromagnetic waves?

your question is kind of general, but i would say a transverse wave.

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Are water waves longitudinal waves?

  • Water waves are surface waves, a mixture of longitudinal and transverse waves. Surface waves in oceanography are deformations of the sea surface. The deformations propagate with the wave speed, while the water molecules remain at the same positions on average. Energy, however, moves towards the shore.

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Are infrared waves sound waves?

No; sound is a mechanical wave, infrared is a part of the electromagnetic spectrum.

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Are lamb waves ultrasonic waves?

"Ultrasonic" is an adjective referring to sound waves at frequencies greater than the typical limit of human hearing. "Lamb waves" are elastic waves propagating in solid plates. Their particle motion lies in the plane that contains the direction of wave propagation and the plate normal (the direction perpendicular to the plate). The characteristic that defines a "Lamb wave" is completely different from the characteristic that defines an "ultrasonic" wave, so the question is a lot like asking "Are human beings American people ?" Some Lamb waves are ultrasonic, and the rest aren't.

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Are radio waves sound waves?

Radio waves can carry sound signals. But by definition radio waves are not sound waves. Radio waves can travel in a vacuum, but sound waves need a physical medium.To explain the apparent contradiction, the sound wave is converted to an electrical signal version that is then used to modulate the radio signal.No it is not

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Are electromagnetic waves mechanical waves?

Electromagnetic waves differ from mechanical waves in that they do not require a medium to propagate. This means that electromagnetic waves can travel not only through air and solid materials, but also through the vacuum of space.

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Are electromagnetic waves transverse waves?

Electromagnetic waves have a transverse component.

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Are sound waves mechanical waves?

Mechanical waves are waves that require a medium in which to travel, i.e., a solid or fluid. As sound needs a medium to travel, sound is a mechanical wave.

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Are sound waves pulse waves?

Sounds waves can be either pulse waves or periodic waves. A pulse wave is characterized as one assault to the medium while periodic waves are characterized as a series of successive assaults on the medium. Sound waves can be described by period, wavelength, amplitude, and for periodic waves we can include frequency.

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Are radio waves and light waves both electromagnetic waves?

  • Both radio waves and light are electromagnetic waves; their main difference is their frequency. Radio waves are created by the acceleration of electrons in a radio antenna, and light waves are created by the oscillations of the electrons within atoms.

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Which waves are faster p-waves or s-waves?

P waves (Primary waves) are faster than S waves (Secondary waves). In case you were wondering, these two waves are body waves.

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What are p waves s waves and l waves?

P waves travel fastest and are the first to arrive from the earthquake… The different S waves arrive after the P waves. The slowest (and latest to arrive on seismograms) are surface waves, such as the L wave. L waves are named for the Cambridge mathematician A.E.H. Love who first described them.

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