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What are the key differences between ventricular rhythm and atrial rhythm in the context of cardiac arrhythmias?
In cardiac arrhythmias, the key differences between ventricular rhythm and atrial rhythm lie in the location of the abnormal electrical activity. Atrial rhythm abnormalities originate in the upper chambers of the heart (atria), while ventricular rhythm abnormalities originate in the lower chambers (ventricles). Ventricular arrhythmias are generally more serious and can be life-threatening, as they can disrupt the heart's ability to pump blood effectively. Atrial arrhythmias, while still concerning, are typically less severe and may not pose an immediate threat to life.
What is the difference between flutter and atrial fibrillation (AFib)?
Flutter and atrial fibrillation (AFib) are both types of abnormal heart rhythms, but they differ in their patterns. Atrial flutter is a regular and organized rhythm, while AFib is irregular and chaotic. Both conditions can cause symptoms like palpitations and fatigue, but AFib is generally considered more serious and may require more aggressive treatment.
What is the difference between atrial fibrillation (AFib) and atrial flutter?
Atrial fibrillation (AFib) and atrial flutter are both types of irregular heart rhythms that originate in the upper chambers of the heart (atria). The main difference between the two is the pattern of the abnormal heartbeats. In AFib, the heartbeats are irregular and chaotic, while in atrial flutter, the heartbeats are typically more organized and rapid. Both conditions can increase the risk of complications like stroke and heart failure, so it's important to seek medical attention if you experience symptoms of either condition.
Which ventricular wall is thicker what is the significance of this?
The left ventricular wall is typically thicker than the right ventricular wall. This is because the left ventricle needs to generate enough pressure to pump oxygen-rich blood throughout the body, while the right ventricle only needs to pump blood to the lungs. The thicker wall of the left ventricle allows it to generate more forceful contractions to accomplish this.
What is the term for three or more premature ventricular complexes occurring in a row at a rate of more than 100 beats a minute?
that looks like 2 different things. 4 or more pvc's is considered "a run of vtach" the other part would depend on the rhythm before the vtach... ex. sinus tachycardia with a run of vtach
What are the key differences between ventricular rhythm and atrial rhythm in the context of cardiac arrhythmias?
In cardiac arrhythmias, the key differences between ventricular rhythm and atrial rhythm lie in the location of the abnormal electrical activity. Atrial rhythm abnormalities originate in the upper chambers of the heart (atria), while ventricular rhythm abnormalities originate in the lower chambers (ventricles). Ventricular arrhythmias are generally more serious and can be life-threatening, as they can disrupt the heart's ability to pump blood effectively. Atrial arrhythmias, while still concerning, are typically less severe and may not pose an immediate threat to life.
Which wave is larger the one for atrial contraction or the one for ventricular contraction?
The wave for ventricular contraction is larger than the wave for atrial contraction. This is because the ventricles have thicker muscle walls and contract more forcefully in order to pump blood out to the body.
What is the difference between ventricular fibrillation and arrhythmia?
Ventricular fibrillation (V fib, VF) is a fatal dysrhythmia that occurs as a result of multiple weak ectopic foci in the ventricles. In other words, there is NO coordinated atrial or ventricular contraction and NO palpable pulse. Ventricular tachycardia (VT or V tach) have three or more PVCs with a rate of >100
Why does atrial repolarization not appear as a separate wave?
Atrial repolarization does not appear as a separate wave on the electrocardiogram (ECG) because it is obscured by the larger QRS complex, which represents ventricular depolarization. The electrical activity of the ventricles is much more powerful than that of the atria, thereby masking the smaller repolarization signal from the atria. Additionally, the time frame of atrial repolarization coincides with the ventricular depolarization, further contributing to its lack of visibility as a distinct wave.
What is an atrial couplets?
Atrial couplets refer to two consecutive premature atrial contractions (PACs) that occur in the heart. These are abnormal heartbeats originating in the atria, which can disrupt the normal rhythm of the heart. It is important to monitor and manage atrial couplets as they may sometimes progress to more serious arrhythmias.
What two heart rhythms are considered lethal?
There are a variety of them. There's ventricular fibrillation, ventricular tachycardia, and of course "asystole". There are also other lethal dysrhythmias that can deteriorate into forms of the aforementioned rhythms like 3 AV Block, agonal, Accelerated IVR, etc. http://skillstat.com/Flash/ECGSim531.html check out this website and look at some of the rhythms. click play when it comes up.
Which is more dangerous atrial fibrillation or ventricular fibrillation?
Ventricular fibrillation. Basically the patient is dead. Atrial fibrillation causes an irregular heartbeat because the ventricles are receiving disorganized impulses from the SA node. Ventricular fibrillation is where the SA node and the AV node are not firing and the Purkinje fibers are supplying the electrical impulses to the heart. However, the Purkinje fibers are not able to supply enough electricity to contract the ventricles so the heart is twitching but not beating. A heart that is not beating is not circulating blood which means the patient is dead.
During which phase of the cardiac cycle do the ventricles of the heart contract?
There are many phases of the cardiac cycle- in total five stages occur. phase 1) - Isovolumetric ventricular contraction In response to ventricular depolarization, tension in the ventricles increases. The rise in pressure within the ventricles leads closure of the mitral and tricuspid valves. The pulmonic and aortic valves stay closes during the entire phase. 2) ventricular ejection: When ventricular pressure exceeds aortic and pulmonary arterial pressure 80MMHG- the aortic and pulmonic valves open and the ventricles eject 70% of the blood. 3) Isovolumetric relaxation: when ventricular pressure falls below pressure in the aorta and pulmonary artery, the aortic and pulmonic valves close. All valves are closed during this phase. Atrial diastole occurs as blood fills the atria.4) ventricular filling: atrial pressure exceeds ventricular pressure which causes the mitral and tricuspid valves to open. Blood then flows passively into the ventricles. About 70% of ventricular filling takes place during this phase. 5) atrial systole: known as the atrial kick, atrial systole coinciding with late ventricular diastole supplies the ventricles with the remaining blood for each heart beat. Diastole: This occurs in-between heartbeats to allow blood to refill the heartSystole: when the atria and ventricles contact For more information e-mail me: Elliottcollins@hotmail.co.uk I also have a VERY helpfull link belowHow_heart_works
What is heart Fibrillation?
Atrial fibrillation is where the electrical impulses within the atria become very rapid and irregular. Atrial rates are usally between 300- 400 BPM or more. How it can happen: 1) Electric shock 2) ion imbalance within heart cells 3) Re- entry pathway. For more information please contactHeartquestionsanswerd@hotmail.co.uk We will answer your question for FREE however use this information as a guide ONLY. I am NOT a doctor but I have been studying the heart for many years and the information here is up=to date.Fibrillation is a medical term and refers to the quivering of a muscle, usually in the heart, as opposed to it contracting properly. Due to uncoordination of the muscle fibrils. Common terms heard are atrial and ventricular fibrillation, the first meaning that the atria of the heart (chamber that fills with blood) is not working well. When ventricular fibrillation occurs, only a small amount of blood is pumped out of the heart. This is the more serious of the two conditions.
What is a couplet in cardiology?
A couplet in cardiology refers to two consecutive premature ventricular contractions (PVCs) on an electrocardiogram. It is considered a type of ventricular arrhythmia and may increase the risk of developing more serious arrhythmias like ventricular tachycardia or ventricular fibrillation. Treatment may be necessary depending on the patient's overall clinical situation.
What is the difference between flutter and atrial fibrillation (AFib)?
Flutter and atrial fibrillation (AFib) are both types of abnormal heart rhythms, but they differ in their patterns. Atrial flutter is a regular and organized rhythm, while AFib is irregular and chaotic. Both conditions can cause symptoms like palpitations and fatigue, but AFib is generally considered more serious and may require more aggressive treatment.
What does arrhythmia mean?
A condition in which the heart beats with an irregular or abnormal rhythm. Could be PVCs (Premature Ventricular Contractions), slow heart rate (<60 bpm = bradycardia), fast heart rate (>100 bpm = tachycardia), atrial fibrillation, and more
