Occur ventricular fibrillation. Medical search. Frequent questions

Recently described syndromes such as the Brugada Syndrome may give clues to the underlying mechanism of ventricular arrhythmias. (wikipedia.org)
when it does occur, ventricular fibrillation is usually a degeneration of other malignant arrhythmias, such as ventricular tachycardia (VT). (medscape.com)
In a population of patients with known ventricular arrhythmias, individuals who had ventricular fibrillation were more likely to have underlying significant heart disease (eg, cardiac tumors, long QT syndrome, structural congenital heart disease) than patients with ventricular tachycardia. (medscape.com)
However, technologic advances in both implantable and external automated defibrillators have made these devices an important part in the management of malignant ventricular arrhythmias. (medscape.com)
The class I and III agents are all effective in reducing ventricular premature beats but often cause side effects and may exacerbate serious arrhythmias in 5-20% of patients. (health.am)
Further theoretical concerns were highlighted by Shenasa and colleagues5 who studied patients undergoing electrophysiological studies for the investigation of both AF and ventricular arrhythmias. (bestbets.org)
Ventricular arrhythmias represent the major mechanism of cardiac sudden death , which is the leading cause of death in the United States , where each year more than 325,000 people die suddenly. (britannica.com)
The mechanism by which ventricular arrhythmias occur is not completely understood. (britannica.com)
Reentry mechanisms are important components of ventricular arrhythmias and may be as simple as a premature ventricular beat coupled to a normal beat or as serious as a dangerous ventricular tachycardia. (britannica.com)
The chaotic nature of excitation and inefficient ventricular contraction in pathological ventricular arrhythmias frequently compromises circulation . (britannica.com)
There has been considerable investigation into methods of evaluating premonitory signs that might predict susceptibility to serious ventricular arrhythmias. (britannica.com)
In addition to evaluating ventricular rhythm disturbances associated with serious cardiac arrhythmias, this method also allows for the identification of potential causative conditions. (britannica.com)
This is a useful way of predicting potential problems associated with ventricular arrhythmias in these patients. (britannica.com)
Since coronary artery disease is the most common cause of ventricular arrhythmias, correction of coronary occlusion either by angioplasty or coronary artery bypass is quite common and successful. (britannica.com)
However, if the ventricle has already been significantly damaged, ventricular arrhythmias may persist. (britannica.com)
In addition, a significant group of people who have no evidence of coronary artery disease develop a propensity for ventricular arrhythmias. (britannica.com)
Treatment of ventricular arrhythmias in patients without coexisting cardiac disease is variable and, in some cases, is not required. (britannica.com)
The efficacy of these drugs was assessed based on their ability to control the frequency of premature ventricular contractions and other transient ventricular arrhythmias. (britannica.com)
Ventricular Arrhythmias: Which Patients Benefit Most From an ICD? (medpagetoday.com)
Should the etiology of cardiomyopathy, whether it's ischemic or non-ischemic, influence clinical decision-making about the use of an implantable cardioverter-defibrillator (ICD) for primary prevention of life-threatening ventricular arrhythmias? (medpagetoday.com)
While previous data supporting primary ICD therapy for prevention of sudden cardiac death is generally considered more robust among patients with ischemic cardiomyopathy [ICM], our findings indicate that patients with non-ischemic cardiomyopathy [NICM] who receive a primary prevention ICD in fact have similar frequencies of both potentially lethal ventricular arrhythmias and appropriate ICD therapy as those with ischemic disease. (medpagetoday.com)
The actual likelihood of developing ventricular tachycardia or other arrhythmias after severe COVID-19 is low for the individual patient, but much higher than in those without severe infection," said study author Dr. Marcus Stahlberg of the Karolinska Institute, Stockholm, Sweden. (eurekalert.org)
But atrial arrhythmias that start in the heart's upper champers, such as atrial fibrillation (AFib), may increase the risk for cardiac arrest. (sharecare.com)
Meanwhile, those with heart failure -their heart isn't pumping as well as it should-may be up to nine times more likely to experience ventricular arrhythmias that can lead to sudden cardiac arrest. (sharecare.com)
We previously demonstrated that chronic pretreatment with a thiazolidinedione peroxisome proliferator-activated receptor (PPAR)-γ activator, troglitazone, improves recovery of left ventricular (LV) function and substrate metabolism after ischemia and reperfusion, without causing arrhythmias. (diabetesjournals.org)
Arrhythmias are generally categorized as ventricular or supraventricular.1 Ventricular arrhythmias are a condition in which extra heartbeats originate from the lower chambers of the heart and can be classified as ventricular tachycardia, ventricular fibrillation, or premature ventricular contractions. (bartleby.com)
Supraventricular arrhythmias originate in the upper chambers of the heart and can be less serious than ventricular arrhythmias. (bartleby.com)
Arrhythmias, including fatal ventricular fibrillation, rapid rises in blood pressure producing cerebral hemorrhage, and angina have occurred. (jhppharma.com)
this also correlates with when the majority of arrhythmias and sudden death episodes occur. (medscape.com)

Atrial and ventricular function after cardioversion of atrial fibrillation. (bmj.com)
OBJECTIVE--Previous studies on atrial recovery after cardioversion of atrial fibrillation have not taken into account new knowledge about the pathophysiology of transmitral and transtricuspid flow velocity patterns. (bmj.com)
PATIENTS--16 patients undergoing cardioversion of atrial fibrillation in whom sinus rhythm had persisted for 24 hours or more. (bmj.com)
CONCLUSIONS--This study indicates that, in addition to the previously known electromechanical dissociation of atrial recovery that exists after cardioversion of atrial fibrillation, there may also be a transient deterioration of ventricular function modulating the transvalvar inflow velocity recordings. (bmj.com)
Atrial fibrillation (A-fib). (mayoclinic.org)
People who have atrial flutter also often have atrial fibrillation at other times. (mayoclinic.org)
Mayo Clinic electrophysiologist Fred Kusumoto, M.D., explains what happens in the heart to create atrial fibrillation and what can be done to fix it. (mayoclinic.org)
HEART BEATING] Atrial fibrillation interrupts this regular beat. (mayoclinic.org)
In atrial fibrillation, instead of the atria squeezing in a normal regular fashion, the atria beat irregularly and chaotically. (mayoclinic.org)
Dr. Kusumoto says atrial fibrillation decreases the heart's blood pumping efficiency and puts a patient at higher risk for blood clots, heart failure, and stroke. (mayoclinic.org)
In some cases, atrial fibrillation can be corrected with medication or by administering a shock to a sedated patient's heart. (mayoclinic.org)
BestBets: Which is the best calcium channel blocker for controlling the ventricular rate in patients with atrial fibrillation? (bestbets.org)
A 57 year old woman attends the Emergency Department with newly diagnosed atrial fibrillation of uncertain duration. (bestbets.org)
Atrial fibrillation (427.31) is a fast and chaotic heartbeat that becomes uncoordinated. (fortherecordmag.com)
Atrial fibrillation may be considered paroxysmal (lasting for a short time) or an ongoing, chronic condition. (fortherecordmag.com)
It is more organized and regular than atrial fibrillation and often becomes atrial fibrillation or may be present with such. (fortherecordmag.com)
Facilitation of atrioventricular conduction has been observed in human electrophysiologic studies and in patients with atrial fibrillation. (drugs.com)
The primary outcome was hospitalisation with ventricular tachycardia, atrial fibrillation, other tachyarrhythmias, or bradycardia/pacemaker implantation. (eurekalert.org)
Atrial fibrillation is an irregular and fast heartbeat that causes shortness of breath and raises the risk of stroke. (eurekalert.org)
Other tachyarrhythmias" refers to a fast heartbeat not caused by atrial fibrillation. (eurekalert.org)
Compared to the control group, patients who had severe COVID-19 requiring mechanical ventilation had a 16-fold risk of ventricular tachycardia, 13-fold risk of atrial fibrillation, 14-fold risk of other tachyarrhythmias, and 9-fold risk of bradycardia/pacemaker implantation. (eurekalert.org)
2. Paroxysmal atrial flutter or fibrillation. (rjmatthewsmd.com)
E. The chronic or long standing PSVT'S like atrial flutter or fibrillation do not revert without treatment,often fail to revert even with attempted treatment and if reverted will often recur despite therapy. (rjmatthewsmd.com)
Radiofrequency catheter ablation techniques are safe and effective as well, especially for patients with poor tolerance to drugs (see figure figure 3b radiofrequency ablation in WPW, as well as in the treatment of atrial flutter and fibrillation by identifying tract carrying the excitation impulse). (rjmatthewsmd.com)
endocarditis, atrial and ventricular mu- ing treatment of coronary embolism. (who.int)

The period of arrhythmia may not be extensive, but ventricular fibrillation that occurs without a few initial beats of ventricular tachycardia is unusual. (medscape.com)
Various factors can lead to the lowering of the ventricular fibrillation threshold and, thus, increase the likelihood of an arrhythmia proceeding to ventricular fibrillation. (medscape.com)
Johns Hopkins cardiologist and ventricular arrhythmia expert Jonathan Chrispin, M.D. , explains symptoms, causes and treatments of cardiac arrest. (hopkinsmedicine.org)
Arrhythmia occurs when electrical signals in the heart are the problem leading to an abnormal heartbeat. (hopkinsmedicine.org)
Ventricular fibrillation is a type of arrhythmia and is the most common cause of cardiac arrest. (hopkinsmedicine.org)
A second mechanism of ventricular arrhythmia is associated with reentry of an impulse. (britannica.com)
Under any circumstance where cardiac injury has occurred, a ventricular arrhythmia may potentially become a lethal ventricular event. (britannica.com)
Two main causes of sudden cardiac death are severe ventricular fibrillation or terminal cardiac arrhythmia. (lifehack.org)
Moreover, a cardiac arrhythmia occurs when the heart pumps irregularly. (lifehack.org)
Another arrhythmia which may, in certain cases, be linked to cardiac arrest is called ventricular tachycardia (VT) or V-tach. (sharecare.com)
Although uncommon, acute motor axonal neuropathy (AMAN) can be complicated by dysautonomia, requiring close monitoring for cardiac arrhythmia and rarely ventricular fibrillation. (neurology.org)
2003, was conducted to find unreported cases of myocardi- unexplained heart failure or arrhythmia occurs in a person tis. (cdc.gov)
or the arrhythmia may degenerate into ventricular fibrillation , resulting in sudden death. (medscape.com)

Thus, the indication that ventricular tachycardia or ventricular fibrillation might occur demands prompt therapeutic intervention. (britannica.com)
v. Inducibility of ventricular tachycardia or ventricular fibrillation during electrophysiologic studies. (medscape.com)

It follows then that, on the basis of the fact that ventricular fibrillation itself is common, idiopathic ventricular fibrillation accounts for an appreciable mortality. (wikipedia.org)
The success of these devices is due to the fact that ventricular fibrillation and pulseless ventricular tachycardia are the most common arrest rhythms in people. (dvm360.com)

: Patients with severe COVID-19 requiring mechanical ventilation are 16 times more likely to develop ventricular tachycardia within six months compared to their peers without severe infection, according to research presented at EHRA 2023, a scientific congress of the European Society of Cardiology (ESC). (eurekalert.org)
Expressing QT dispersion as a percentage of cycle length (QT dispersion ratio) rather than using standard rate correction may be superior in identifying patients who develop ventricular fibrillation. (bmj.com)

Acute treatment with troglitazone increases susceptibility to ventricular fibrillation during myocardial ischemia and reperfusion. (diabetesjournals.org)
Preoperative non-invasive testing aims to provide information primarily about coronary artery disease (myocardial ischemia or reduced blood supply to the heart muscle), left ventricular (LV) dysfunction, and heart valve abnormalities in selected patients. (cadth.ca)

The outcome in patients with ventricular fibrillation is better than in patients with asystole or pulseless electrical activity (PEA), and outcome may be further improved by prompt recognition and treatment of ventricular fibrillation. (medscape.com)
Defibrillation is considered the definitive therapy for ventricular fibrillation and pulseless ventricular tachycardia. (dvm360.com)

Unlike a heart attack, which occurs when the blood flow that supplies the heart with oxygen is blocked, cardiac arrest occurs when the heart's electrical system malfunctions. (sharecare.com)

These EADs appear as pathologic U waves on a surface ECG, and, when they reach a threshold, they may trigger ventricular tachyarrhythmias. (medscape.com)
The most common electrophysiologic mechanisms leading to SCD are tachyarrhythmias such as ventricular fibrillation (VF) or ventricular tachycardia (VT). (medscape.com)

Ventricular fibrillation is a rapid heartbeat in the heart's ventricle, which causes the heart to tremble instead of normally pumping blood. (hopkinsmedicine.org)
Premature beats (427.60 to 427.69) occurs when there is an extra heartbeat between two normal beats. (fortherecordmag.com)

Sudden death occurs more frequently (presumably as a result of ventricular fibrillation ) when ventricular premature beats occur in the presence of organic heart disease but not in individuals with no known cardiac disease. (health.am)
However, the primary danger of ventricular tachycardia is that it will decay into ventricular fibrillation, which is incapable of sustaining life and represents the majority of sudden cardiac death cases. (britannica.com)
Present indications for primary ICD placement, which are based on the presence of LVEF [left ventricular ejection fraction] ≤35% and heart failure symptomatology, appear to lack sensitivity and specificity for predicting sudden cardiac death risk," says Dr. Narins. (medpagetoday.com)
This sudden loss of functionality in the heart stops blood pumping to the rest of the body, with death occurring in 90 percent of victims. (stryker.com)
Some people may experience symptoms beforehand, such as chest pain, heart palpitations, shortness of breath and weakness-but sudden cardiac arrest may occur without warning. (sharecare.com)
More than 350,000 deaths caused by sudden cardiac arrest occur outside of a hospital setting in the U.S. every year. (sharecare.com)
In fact, 75 percent of sudden cardiac deaths occur in people who have had a heart attack-usually within six months. (sharecare.com)
This traumatic blow throws the heart into an abnormal rhythm called ventricular fibrillation that can stop the heart and cause cardiac arrest and sudden death if proper medical intervention does not occur within three minutes of the trauma. (ajc.com)
Yes, if these children develop sudden cardiac arrest with a "shockable" abnormal rhythm (such as ventricular fibrillation or ventricular tachycardia). (uiltexas.org)
Sudden cardiac death (SCD) is an unexpected death due to cardiac causes that occurs in a short time period (generally within 1 hour of symptom onset) in a person with known or unknown cardiac disease. (medscape.com)
This contrasts with other heart diseases associated with sudden death, such as hypertrophic cardiomyopathy and long QT syndrome, which typically occur at younger ages. (medscape.com)

Ventricular fibrillation can occur at currents of 50-100 mA. (medscape.com)
Many of these injuries are low-hazard cases where relatively low electrical currents cause ventricular fibrillation. (millerandzois.com)
If a slow inactivation of the Ca ++ and Na + currents occurs, this inward "window" current can cause single or repetitive depolarization during phases 2 and 3 (ie, EADs). (medscape.com)

Severe tonic-clonic seizures occurred and were followed by periods of apnea. (cdc.gov)
In fatal poisonings, severe seizures occur after the initial symptoms, and death results usually from status epilepticus. (cdc.gov)
Hyperpyretic crises, severe convulsions, and deaths have occurred in patients receiving tricyclic antidepressant and monoamine oxidase inhibiting drugs simultaneously. (nih.gov)
RUXIENCE should only be administered by a healthcare professional with appropriate medical support to manage severe infusion-related reactions that can be fatal if they occur ( 2.1 ). (drugs.com)
1)Severe bradycardia due to AV block may require with temporary pacing.In the absence of anti-digoxin Fab, ventricular fibrillationis treated with low energy DC cardioversion. (pediatriconcall.com)
Coarctation of the Aorta Coarctation of the aorta is a localized narrowing of the aortic lumen that results in upper-extremity hypertension, left ventricular hypertrophy, and, if severe, malperfusion of the abdominal. (msdmanuals.com)

Torsade usually terminates spontaneously but frequently recurs and may degenerate into ventricular fibrillation . (medscape.com)

The ventricular muscle twitches randomly rather than contracting in a coordinated fashion (from the apex of the heart to the outflow of the ventricles), and so the ventricles fail to pump blood around the body - because of this, it is classified as a cardiac arrest rhythm, and patients in V-fib should be treated with cardiopulmonary resuscitation (CPR) and prompt defibrillation. (wikipedia.org)
Left untreated, ventricular fibrillation is rapidly fatal as the vital organs of the body, including the heart, are starved of oxygen, and as a result patients in this rhythm will not be conscious or responsive to stimuli. (wikipedia.org)
citation needed] Idiopathic ventricular fibrillation occurs with a reputed incidence of approximately 1% of all cases of out-of-hospital arrest, as well as 3-9% of the cases of ventricular fibrillation unrelated to myocardial infarction, and 14% of all ventricular fibrillation resuscitations in patients under the age of 40. (wikipedia.org)
After initial resuscitation, therapy in patients with ventricular fibrillation is primarily focused on preventing the antecedent ventricular tachycardias. (medscape.com)
300 beats per minute [bpm]) presents a potential risk for degeneration to ventricular fibrillation in patients with Wolff-Parkinson-White (WPW) syndrome . (medscape.com)
Patients with major depressive disorder (MDD), both adult and pediatric, may experience worsening of their depression and/or the emergence of suicidal ideation and behavior (suicidality) or unusual changes in behavior, whether or not they are taking antidepressant medications, and this risk may persist until significant remission occurs. (nih.gov)
In nonacute settings, most patients with ventricular tachycardia have known or easily detectable cardiac disease, and the finding of ventricular tachycardia is an unfavorable prognostic sign. (health.am)
Patients with coronary artery disease often undergo an exercise test that examines ventricular rhythm under circumstances in which part of the heart is receiving insufficient blood. (britannica.com)
In the limited number of patients who were studied for 24, 48, and 72 hours, a persistent increase in cardiac output occurred in some, whereas output returned toward baseline values in others. (drugs.com)
2)Severely poisoned patients may die in Direct current (DC)shock-resistant ventricular fibrillation. (pediatriconcall.com)
In our institution, the installation of a continuous telemetry unit that records a history of EKG tracings for the prior 24 hours has shown that a significant number of patients have a period ventricular fibrillation before developing asystole. (dvm360.com)
Levels of QT dispersion (87 (15) ms), QTc dispersion (105 (17) ms1/2), and QT dispersion ratio (11.7 (0.8)%) in the four patients with ventricular fibrillation were significantly higher. (bmj.com)
CONCLUSION--QT dispersion is increased after myocardial infarction and levels are higher in patients with ventricular fibrillation. (bmj.com)
Department was notified about 6 cases of presumptive acid identification in myocardial tissue specimens in per- myocarditis and 1 case of pericarditis that occurred in sons living in northern Illinois from October 1, 2002, patients hospitalized in Kane County, Illinois, within a 2- through May 30, 2003. (cdc.gov)
In short, the Brugada syndrome is an abnormality in the electrical system of the heart that predisposes patients to develop episodes of ventricular tachycardia and loss of consciousness. (medscape.com)
however, whether such a decrease has occurred among OHCA patients is not known. (cdc.gov)

Surface ECG demonstrates no identifiable QRS complexes, although a wide range of amplitude of electrical activity is present, from sine-wave ventricular flutter to fine ventricular fibrillation, which may be difficult to distinguish from asystole (see image below). (medscape.com)
Ventricular flutter (427.42) is rapid contractions of the ventricles of the heart. (fortherecordmag.com)
Without treatment, ventricular flutter may progress to ventricular fibrillation. (fortherecordmag.com)

Ventricular fibrillation (V-fib or VF) is an abnormal heart rhythm in which the ventricles of the heart quiver. (wikipedia.org)
During SCA, the victim's heart has an abnormal heart rhythm called ventricular fibrillation. (stryker.com)
The most serious abnormal heart rhythm more often linked with these life-threatening events however, is ventricular fibrillation, or VFib. (sharecare.com)

These variables may influence myocardial susceptibility to an R-on-T phenomenon, causing depolarization of partially repolarized tissue, potentially initiating ventricular fibrillation. (medscape.com)
Even ventricular tachycardia can potentially cause shock and be lethal in its own right. (britannica.com)
Ventricular tachycardia is a potentially life-threatening heart rhythm disturbance that occurs when the ventricle beats too fast to pump properly causing the body to receive insufficient oxygenated blood. (eurekalert.org)
Intervention during this period of fibrillation would potentially improve patient outcome. (dvm360.com)

11) Assessment of systolic left ventricular function: a multi-centre comparison of cineventriculography, cardiac magnetic resonance imaging, unenhanced and contrast-enhanced echocardiography. (bracco.com)

Ventricular fibrillation with polymorphic morphology and cycle lengths varying from 80-280 milliseconds. (medscape.com)
These precipitating factors include electrolyte abnormalities, proarrhythmic medications, alterations in the sympathetic-parasympathetic balance (particularly increased catecholamines), hypothermia or hyperthermia, primary electrical disease (eg, long QT syndrome, Brugada syndrome, catecholaminergic polymorphic ventricular tachycardia), and hypoxia/ischemia. (medscape.com)
Torsade de pointes is an uncommon and distinctive form of polymorphic ventricular tachycardia (VT) characterized by a gradual change in the amplitude and twisting of the QRS complexes around the isoelectric line (see the image below). (medscape.com)

Ventricular fibrillation (427.41) is rapid, chaotic electrical impulses causing the ventricles to fibrillate ineffectively so they fail to pump blood. (fortherecordmag.com)

3)Most serious side effects of Oleander poisoning are cardiac rhythm disturbances including ventricular dysrhythmias, tachyarrythmias, bradycardia, and heart block. (pediatriconcall.com)

For more information, see Ventricular Tachycardia and Pediatric Hypertrophic Cardiomyopathy . (medscape.com)
If the underlying condition is mitral prolapse, hypertrophic cardiomyopathy, left ventricular hypertrophy, or coronary disease - or if the QT interval is prolonged - ß-blocker therapy is appropriate. (health.am)
Ventricular tachycardia is a frequent complication of acute myocardial infarction and dilated cardiomyopathy but may occur in chronic coronary disease, hypertrophic cardiomyopathy, mitral valve prolapse, myocarditis, and in most other forms of myocardial disease. (health.am)

Heart rhythm problems occur when the electrical impulses in the heart don't function properly, causing the heart to beat too fast, too slow, or irregularly. (fortherecordmag.com)
Time is of the essence when this occurs," cautions Dr. Prager, who specializes in electrophysiology and heart rhythm disorders. (sharecare.com)

Ventricular fibrillation most commonly occurs within diseased hearts, and, in the vast majority of cases, is a manifestation of underlying ischemic heart disease. (wikipedia.org)

In contrast, premature ventricular contractions can occur spontaneously in healthy people without any consequence. (britannica.com)

Because ventricular fibrillation is usually a degeneration of ventricular tachycardias, the role ventricular tachycardias play in the evolution of the rhythm disturbance must be considered. (medscape.com)

More than 80 percent of the deaths occurred in low and middle income countries (WHO, 2009e). (health.am)
Almost all of these deaths are related to ventricular fibrillation . (britannica.com)
Many electrocution accidents and deaths occur on construction sites. (millerandzois.com)
The cases described in this report illustrate diverse circumstances in which deaths attributable to lightning can occur. (cdc.gov)
Deaths that occurred before or during hospital admission (13,738) contributed to positive YPLL. (cdc.gov)

approximately 80% of fatal reactions occurred with first infusion. (drugs.com)
Serious cardiac events, including some that have been fatal, have occurred following use of D.H.E. 45® (dihydroergotamine mesylate) Injection, USP, but are extremely rare. (rxlist.com)

In adults, ventricular fibrillation is preceded by ventricular tachycardia in approximately 80% of cases. (medscape.com)

Frolkis JP et al: Frequent ventricular ectopy after exercise as a predictor of death. (health.am)

The sooner defibrillation occurs, the higher the likelihood of successful resuscitation. (dvm360.com)
When it is provided immediately after the onset of ventricular fibrillation the success rate of defibrillation is extremely high. (dvm360.com)

Supraventricular tachycardia (SVT) is a burst of rapid heartbeats occurring above the ventricles. (fortherecordmag.com)
During the initial upstroke of action potential in a normal cardiac cell, a rapid net influx of positive ions (Na + and Ca ++ ) occurs, which results in the depolarization of the cell membrane. (medscape.com)
She developed rapid quadriparesis over 24 hours and had ventricular fibrillation with cardiac arrest. (neurology.org)
This case highlights an atypical asymmetric presentation with initially preserved reflexes, rapid progression, and cardiac dysfunction that can occur independent of dysautonomia. (neurology.org)

Changes in general occurred earlier on the right side than the left. (bmj.com)
The maintenance infusion of up to 0.5 mg/min can be cautiously continued for 2 to 3 weeks regardless of the patient's age, renal function, or Left-ventricular function. (globalrph.com)
ed about warfarin and possible adverse that coronary embolism occurs in the We administered unfractionized reactions with other drugs and followed left coronary artery in 75% of cases and heparin and tirofiban (glycoprotein regularly. (who.int)
On the left are processes that occur as a result of being ill and hospitalized or receiving treatment. (cdc.gov)

In a study of pediatric out-of-hospital arrests, ventricular fibrillation was the initial recorded rhythm in 19% of cardiac arrests. (medscape.com)

Even so, the dispute considering Brugada syndrome as an independent entity or forming part of the spectrum of arrhythmogenic right ventricular cardiomyopathy is still controversial. (bvsalud.org)

Ventricular premature beats are characterized by wide QRS complexes that differ in morphology from the patient's normal beats. (health.am)

1 The study's primary endpoint was sustained ventricular tachycardia (VT) ≥200 beats per minute or ventricular fibrillation (VF), whichever occurred first. (medpagetoday.com)
The ventricular rate can range from 150 beats per minute (bpm) to 250 bpm. (medscape.com)

3 When SCA occurs, the heart needs immediate treatment from a defibrillator to restart the electrical system. (stryker.com)

Primary ventricular fibrillation is uncommon in children. (medscape.com)
Primary metabolic acidoses that occur as a result of a marked increase in endogenous acid production (eg, lactic or keto acids) or progressive accumulation of endogenous acids when excretion is impaired by renal insufficiency are characterized by decreased plasma bicarbonate concentration and increased anion gap without hyperchloremia. (medscape.com)

The usual mechanism is reentry, but abnormally triggered rhythms occur. (health.am)

Jouven X et al: Long-term outcome in asymptomatic men with exercise-induced premature ventricular depolarizations. (health.am)

Ventricular fibrillation (VF) -- When VF occurs, the lower chambers in the heart quiver instead of beating regularly. (medlineplus.gov)
Ventricular fibrillation occurs when, instead of pumping blood to the rest of your body, some of the chambers in your heart just quiver. (lifehack.org)
VFib occurs when the heart's lower chambers start to quiver rather than beat normally, which stops blood flow. (sharecare.com)

Anatomy19

Organisms5

Diseases55

Chemicals and Drugs35

Analytical, Diagnostic and Therapeutic Techniques and Equipment62

Psychiatry and Psychology1

Phenomena and Processes18

Disciplines and Occupations3

Technology, Industry, Agriculture2

Information Science6

Named Groups1

Health Care25

Arrhythmias29

Atrial25

Arrhythmia13

Tachycardia or ventricular fibrillation2

Fact that ventricular fibrillation2

Develop ventricular2

Myocardial ischemia2

Pulseless2

Heart's electrical system1

Tachyarrhythmias2

Heartbeat2

Sudden11

Currents3

Severe6

Degenerate1

Patients16

Flutter3

Abnormal heart rhythm3

Potentially4

Systolic1

Polymorphic3

Chaotic electrical1

Bradycardia1

Hypertrophic Cardiomyopathy3

Heart rhythm2

Ischemic1

Spontaneously1

Rhythm disturbance1

Deaths5

Fatal2

Approximately 801

Ectopy1

Defibrillation2

Rapid4

Left4

Cardiac arrests1

Brugada1

Morphology1

Beats per mi2

Treatment1

Primary2

Rhythms1

Outcome1

Quiver3