Posterior dominant rhythm. Medical search. Frequent questions

Left ventricular (LV) internal diameters, LV septal and posterior wall thicknesses, LV ejection fraction (LVEF) were all similar in both groups. (ispub.com)
On echocardiography, the characteristic appearance includes a thickened ventricular septum and left ventricular posterior wall without an obvious etiology (eg, hypertension, aortic stenosis). (medscape.com)
Treatment is primarily based on ventricular rate and rhythm control, which can be achieved through drugs and/or cardioversion. (lecturio.com)

It is located posterior to central sulcus, anterior to the OCCIPITAL LOBE, and superior to the TEMPORAL LOBES. (lookformedical.com)
Open and large anterior and posterior fontanelles. (contemporarypediatrics.com)
The disorder is manifest by ECG changes including prolonged PR interval, widened P wave, widened QRS complex, AV block, right bundle branch block, left anterior hemiblock, left posterior hemiblock, left bundle branch block, or nonspecific interventricular conduction block. (msdmanuals.com)
Two important arteries, the axillary artery and the subclavian artery, run anterior to the scapula and posterior to the clavicle. (vetcan.org)

Our study demonstrates a circadian rhythm of contrast sensitivity that peaks during the daytime, and that its regulation involves interactions of D4Rs, the clock gene Npas2 , and the clock-controlled gene adenylyl cyclase 1 ( Adcy1 ) in a subset of retinal ganglion cells (RGCs). (jneurosci.org)
Abnormal expression of UBE3A affects the normal maintenance of the circadian rhythm. (spandidos-publications.com)

This is the property of the AV node that prevents rapid conduction to the ventricle in cases of rapid atrial rhythms, such as atrial fibrillation or atrial flutter. (wikipedia.org)
For example, a blood clot might originally form in the heart chamber as a result of an irregular heart rhythm, like atrial fibrillation . (medicinenet.com)

In my advanced courses we always begin with a normal tracing and I have all the participants measure the R-R intervals with ECG calipers to demonstrate that there is often considerable variation in the rhythm and that there is very rarely a perfectly regular sinus rhythm (and when there is - it's only for a few moments! (ecgguru.com)
Catheter ablation is a well-established treatment for patients with AF in whom sinus rhythm is desired. (aerjournal.com)
Some suggest that hybrid ablation may be more effective than lone endocardial ablation in achieving the elusive goal of maintaining sinus rhythm in patients with non-paroxysmal AF. (aerjournal.com)
Catheter ablation of AF is a well-established treatment for patients in which sinus rhythm is desired, such as those with refractory symptoms despite maximal medical therapy, heart failure secondary to AF and intolerance to AADs. (aerjournal.com)

Wernicke's area is traditionally viewed as being located in the posterior section of the superior temporal gyrus (STG), usually in the left cerebral hemisphere. (wikipedia.org)
While previously thought to connect Wernicke's area and Broca's area, new research demonstrates that the arcuate fasciculus instead connects to posterior receptive areas with premotor/motor areas, and not to Broca's area. (wikipedia.org)
Research using Transcranial magnetic stimulation suggests that the area corresponding to the Wernicke's area in the non-dominant cerebral hemisphere has a role in processing and resolution of subordinate meanings of ambiguous words-such as ''river'' when given the ambiguous word "bank. (wikipedia.org)
the vast majority of textbooks still state that this aspect of perception and language processing occurs in Wernicke's area (the posterior third of the STG). (wikipedia.org)
Wernicke's area is named after Carl Wernicke, a German neurologist and psychiatrist who, in 1874, hypothesized a link between the left posterior section of the superior temporal gyrus and the reflexive mimicking of words and their syllables that associated the sensory and motor images of spoken words. (wikipedia.org)
Wernicke's area is a critical language area in the posterior superior temporal lobe connects to Broca's area via a neural pathway. (ucsf.edu)

First described by Wheaton 1 in 1894 and later by Apert in 1906, 2 Apert syndrome, or acrocephalosyndactyly, is an autosomal dominant malformation syndrome characterized by craniosynostosis, midface hypoplasia, syndactyly, and various visceral abnormalities. (contemporarypediatrics.com)
3 Although Apert syndrome has an autosomal dominant inheritance pattern, many cases are de novo mutations, 4 and 1 case of germinal mosaicism has been reported. (contemporarypediatrics.com)
Inheritance is typically in an autosomal dominant pattern. (msdmanuals.com)
Angelman syndrome (AS) is an autosomal dominant neurodevelopmental genetic disease with maternal imprint, which is associated with the presence of the abnormal chromosome 15q11‑q13, and the loss of maternal specific expression of ubiquitin‑protein ligase E3A (UBE3A). (spandidos-publications.com)

Targeted disruption of the gene encoding D4Rs reduces the amplitude of the contrast sensitivity rhythm by reducing daytime sensitivity and abolishes the rhythmic expression of Npas2 and Adcy1 mRNA in the ganglion cell layer (GCL) of the retina. (jneurosci.org)
In this condition, Alpha presents itself in the EEG tracing with a slower frequency and greater amplitude , whereas the moment the eyes are opened, or an activity requiring cognitive effort is initiated, the oscillatory rhythm tends to become faster and the amplitude to decrease. (emianopsia.com)
Studies conducted with different perceptual paradigms maintain that there is a relationship between the modulation of alpha amplitude when the eyes are opened and the perception of a visual stimulus, defining this rhythm as a possible index of the excitability of the visual cortex , the area involved in perception. (emianopsia.com)

Here, to formally test this idea, we developed a noninvasive optogenetic pacemaker for precise, cell-type-specific control of cardiac rhythms of up to 900beats per minute in freely moving mice, enabled by a wearable micro-LED harness and the systemic viral delivery of a potent pump-like channelrhodopsin. (stanford.edu)
To identify potential mechanisms, we used whole-brain activity screening and electrophysiology to find brain regions that wereactivated by imposed cardiac rhythms. (stanford.edu)
We identified the posterior insular cortex as a potential mediator of bottom-up cardiac interoceptive processing, and found that optogenetic inhibition of this brain region attenuated the anxiety-like behaviour that was induced by optical cardiac pacing. (stanford.edu)
AV conduction during normal cardiac rhythm occurs through two different pathways: the first "pathway" has a slow conduction velocity but shorter refractory period the second "pathway" has a faster conduction velocity but longer refractory period. (wikipedia.org)
There are areas in the cardiac muscle with anatomical and functional differentiation that present automatism, thus subjecting the rest of the fibers to their own rhythm. (bvsalud.org)

It is traditionally thought to reside in Brodmann area 22, which is located in the superior temporal gyrus in the dominant cerebral hemisphere, which is the left hemisphere in about 95% of right-handed individuals and 70% of left-handed individuals. (wikipedia.org)

Although the behavior of Alpha and its relationship to visual system function are well known in healthy individuals, little is known about rhythm activity in subjects with lesions of the posterior cortices, especially in the occipital and parietal areas where Alpha activity is predominant. (emianopsia.com)

The definition of the Alpha rhythm most widely used to date has been proposed by the International Federation of Societies for Electro-encephalography and Clinical Neurophysiology (IFSECN), which describes it as a rhythm with a frequency ranging from 8 to 12 Hz that occurs during wakefulness in the posterior regions of the head, generally with a higher voltage in the occipital areas. (emianopsia.com)
An additional mechanism the scapula plays a large role in is the scapulothoracic rhythm, which is the pattern of muscle contractions and motion that occurs between the scapula and the thoracic vertebra. (vetcan.org)

The contrast between the first and second halves of the page illustrates the reactivity of a normal alpha rhythm, with attenuation upon eye opening. (medscape.com)
Npas2 −/− and Adcy1 −/− mice show strikingly similar reductions in the contrast sensitivity rhythm to that in mice lacking D4Rs. (jneurosci.org)
Our results indicate that the contrast sensitivity rhythm is modulated by D4Rs via a signaling pathway that involves NPAS2-mediated circadian regulation of Adcy1 . (jneurosci.org)

In assessing the frequency of the alpha rhythm, alerting maneuvers are essential in order to ensure that the patient is in the best awake state and not drowsy. (medscape.com)
Beta activity refers to a frequency band rather than a distinct (specific) rhythm such as alpha or mu. (medscape.com)
However, morphology (not absolutely typical but fairly so), frequency, and distribution strongly suggest that this is a mu rhythm. (medscape.com)
subharmonic of the posterior dominant rhythm, being half its frequency. (eegatlas-online.com)
Regarding the oscillatory frequency of the Alpha rhythm, it is thought that it may affect reaction times and the speed of information processing, working as a sampling or sampling system of the visual stimulus. (emianopsia.com)
Alpha frequency plays a role in the temporal resolution of information and causes the rhythm to have cyclic perceptual gates and time windows for information filtering. (emianopsia.com)

Heart Rhythm 10:1932-1963, 2013. (msdmanuals.com)
You should not have this procedure if you are pregnant or nursing, show signs of corneal thinning, or take medications with eye-related side effects, such as Isotretinoin (Accutane®) for acne treatment or Amiodarone hydrochloride (Cordarone®) for normalizing heart rhythm. (backinfocus.com)

Background: Electrographic characteristics (extreme delta brush, posterior dominant rhythm and slow waves) may predict outcomes in anti-NMDA receptor encephalitis (NMDARE). (emory.edu)
All cortical activity presents electrical oscillations, referred to as rhythms or brain waves. (emianopsia.com)
A consistent underlying atrial rhythm ( usually sinus ) - which is established by similar morphology of P waves on the tracing. (blogspot.com)

Immunosuppressive drugs have pharmacokinetic (PK) characteristics that may be influenced by circadian rhythms. (frontiersin.org)

An example of a typical normal alpha rhythm, showing clear attenuation upon eye opening (second half of page). (medscape.com)
Figure 1: Unenhanced CT shows a heterogeneous attenuation mass with cystic spaces in the posterior fossa. (blogspot.com)

Mu rhythm over the left (greater than right) central region. (medscape.com)
Damage to a discrete part of the brain in the left frontal lobe (Broca's area) of the language-dominant hemisphere has been shown to significantly affect the use of spontaneous speech and motor speech control. (ucsf.edu)
PPA is caused by degeneration in the parts of the brain that control speech and language (the left, or "dominant," side of the brain in the frontal, temporal and parietal regions that normally control language function). (ucsf.edu)
In right-dominant individuals the blood supply is from the right coronary artery while in left dominant individuals it originates from the left circumflex artery. (wikipedia.org)
Convergent ablation - also known as the convergent procedure - is a hybrid technique combining an endocardial RF ablation procedure with minimally invasive epicardial surgical ablation of the posterior left atrial (LA) wall. (aerjournal.com)

[ 2 ] Nonepileptiform abnormalities are characterized by alterations in normal rhythms or by the appearance of abnormal ones. (medscape.com)
Could present normal interictal EEG with occasional frontally dominant 3-6 Hz s/w or ps/w. (studystack.com)
The alpha rhythm is the most prominent feature of the normal mature EEG. (medscape.com)
Exercise generally abolishes premature beats in normal hearts, and the rhythm becomes regular. (health.am)

Posterior reversible encephalopathy syndrome in childhood: report of four cases and review of the literature. (medscape.com)
Posterior reversible encephalopathy syndrome induced by acute postinfectious glomerulonephritis. (medscape.com)

The changes that occur about Alpha rhythm activity depend on external stimulation or internal states and reflect different cognitive processes. (emianopsia.com)
The usual mechanism is reentry, but abnormally triggered rhythms occur. (health.am)

As the disease progresses, it is usually low voltage and shows a decrease in organized rhythms in later stages, along with specific movement types that cause artifact. (studystack.com)

As it progresses, the voltage decreases and alpha rhythm diminishes. (studystack.com)
A 10-second segment showing a well-formed and well-regulated alpha rhythm at 9 Hz. (medscape.com)
At times, as shown here, the alpha rhythm can be identified only in very brief bursts and often immediately after eye closure. (medscape.com)
This is an example of an alpha rhythm with a wider distribution than is typical. (medscape.com)
The patient's alpha rhythm at 12 Hz is seen in the second half of the sample. (medscape.com)
Alpha rhythm with somewhat "spiky" or sharply contoured morphology. (medscape.com)
Thus, Alpha is the dominant EEG rhythm in the occipito-parietal regions in the resting state with eyes closed. (emianopsia.com)

The most common cause of focal enhancement of beta activities is the breach rhythm . (medscape.com)

This procedure targets the posterior wall of the LA, an area difficult to ablate effectively using a catheter-based approach. (aerjournal.com)

Heart rate and rhythm regular, without murmur. (contemporarypediatrics.com)
A regular ( or at least fairly regular ) atrial rhythm should be seen when some form of AV block is present. (blogspot.com)

In you have risk talk high control rhythm can was or check. (intuitivedesign.ma)
Conventional treatment for AF has focused on rate and rhythm control using anti-arrhythmic drugs (AADs), as well as anticoagulation therapy based on individual risk profile. (aerjournal.com)

2. The accuracy, sensitivity, specificity, positive predictive value, and negative predictive value of the new SCORE-AI feature (posterior dominant rhythm) will be assessed in 25-minute routine EEG recordings. (who.int)

Remembering to think of this truism whenever you assess a tracing for possible AV block will prove invaluable in uncovering the real reason for the rhythm disturbance in a surprising number of cases. (blogspot.com)

Scapula (Shoulder blade) It is a triangular-shaped flat bone, which forms the posterior side of the shoulder. (vetcan.org)

Retrieved on 2008-12-22 Harrison's Principles of Internal Medicine, 17e" Section 3: Disorders of Rhythm Archived July 7, 2011, at the Wayback Machine Van der Hauwaert LG, Stroobandt R, Verhaeghe L (October 1972). (wikipedia.org)

Rather than AV block - the rhythm in Figure 1 is an insightful example of the "mischief" that blocked PACs ( P remature A trial C ontractions ) can cause, especially when PACs are frequent. (blogspot.com)

Physiological theories of emotion, proposed over a century ago, have considered that in general, there could be an important and even dominant flow of information from the body to the brain9. (stanford.edu)
By synthesizing and secreting neurohormones, the nuclei of the hypothalamus act as a conduit between the nervous and endocrine systems via the pituitary gland (hypophysis), regulating homeostatic functions such as hunger, thirst, body temperature, and circadian rhythms. (medscape.com)
With the location of the scapula being posterior, meaning on the back of the body, there are some muscles from several groups that play a role in its movement. (vetcan.org)

Studies have shown that in patients with longer AF durations, atrial stretch leads to structural and electrical atrial remodelling and development of vulnerable atrial substrate, particularly in the posterior LA. 12 The rationale behind the convergent procedure is to target this substrate in combination with conventional endocardial pulmonary vein isolation. (aerjournal.com)

Wen YK, Chen ML. IgA-Dominant Postinfectious Glomerulonephritis: Not Peculiar to Staphylococcal Infection and Diabetic Patients. (medscape.com)

Posterior portion of the CEREBRAL HEMISPHERES responsible for processing visual sensory information. (lookformedical.com)
The rhythm is blocked or attenuated by attention, especially visual effort. (emianopsia.com)

Tachypnea, dyspnea, hepatic congestion, and gallop rhythm suggest fluid overload with congestive heart failure. (medscape.com)

This area is neuroanatomically described as the posterior part of Brodmann area 22. (wikipedia.org)

Does this rhythm represent Mobitz I ( Wenckebach ) or Mobitz II AV block? (blogspot.com)

Anatomy60

Organisms13

Diseases31

Chemicals and Drugs22

Analytical, Diagnostic and Therapeutic Techniques and Equipment63

Psychiatry and Psychology14

Phenomena and Processes63

Disciplines and Occupations2

Information Science9

Health Care10

Ventricular3

Anterior4

Circadian Rhythm2

Atrial fibrillation2

Sinus rhythm4

Wernicke's6

Autosomal dominant4

Amplitude3

Cardiac5

Cerebral hemisphere1

Lesions1

Occurs2

Contrast3

Frequency6

Heart rhythm2

Waves3

Characteristics1

Attenuation2

Left5

Normal4

Syndrome2

Occur2

Decrease1

Alpha7

Enhancement1

Wall1

Regular2

Control2

Feature1

Cases1

Side1

Section1

Figure1

Body3

Shown1

Patients1

Visual2

Suggest1

Area1

Block1