Sinus rhythm in ecg means

Sinus Rhythm Pace mapping during sinus rhythm is used to identify exit sites of the reentrant circuit and confirm potential ablation target sites identified by activation and/or entrainment mapping, as indicated by a paced QRS morphology matching that of the VT morphology. From: Clinical Arrhythmology and Electrophysiology, 2009 Related terms: • Cardioversion • Ventricular Tachycardia • Tachyarrhythmia • Cardiac Dysrhythmia • Therapeutic Procedure • Patient • Inpatient • Heart Failure Sinus rhythm is the primary physiologic mechanism of the heartbeat. You diagnose it by finding P waves with a predictable polarity (see Chapter 4). When the sinus (also called the sinoatrial or SA) node is pacing the heart, atrial depolarization spreads from right to left and downward toward the AV junction. An arrow representing this depolarization wave points downward and toward the (patient’s) left. Therefore, with normal sinus rhythm, the P wave is always positive in lead II and negative in lead aVR (see Figs. 4-3 and 13-1). Key Points Recall the following from Chapter 4: ▪ If you state that the rhythm is “normal sinus” and do not mention any AV node conduction abnormalities, listeners will assume that each P wave is followed by a QRS complex and vice versa. The more technical and physiologically unambiguous way of stating this finding is to say: “Sinus rhythm with 1:1 AV conduction.” ▪ However, do not forget that sinus rhythm (i.e., the sinus node is the dominant or sole pacemaker of the...

Sinus tachycardia is a common condition that happens sometimes in response to stressful situations. Your heart beats more than 100 times per minute, but usually returns to normal after the stressful event has passed. If your symptoms continue when your body is at rest, it’s a good idea to see your healthcare provider. Overview What is sinus tachycardia? When you have tachycardia, your heart rate is faster than 100 beats per minute. With sinus tachycardia, electrical signals from your heart’s sinoatrial (SA) node are telling your heart to beat faster than normal. This is a common condition that is usually a result of stressors like fear, exercise or not drinking enough fluids. What is inappropriate sinus tachycardia? If the cause of your sinus tachycardia is unknown, it’s called inappropriate sinus tachycardia. You still have more than 100 heartbeats per minute, but there is nothing unusual on your ECG ( Your ECG (electrocardiogram) can help your healthcare provider tell the difference between sinus tachycardia and other types of tachycardia. Some of these are: • • Sinus tachycardia with PVCs (premature ventricular contractions) and sinus tachycardia with PACs (premature atrial contractions) can give you a feeling of a racing or pounding heart (palpitations). However, these extra heartbeats are normally not a cause for concern. • Who does sinus tachycardia affect? Anyone can get sinus tachycardia. It’s a normal response to something that’s causing you stress. Symptoms and C...

Q: I am a 41 years old man and I underwent a routine ECG and the report showed sinus rhythm, left axis, non-specific ST-T abnormality (elevated). Otherwise it was a normal ECG. What does it mean? A:ST segment and T wave are ECG terminologies and these are arbitrary names given to certain segments of the tracings of the ECG. ST-T wave changes can occur in a number of situations, which are well defined. However some times these changes occur for conditions, which are either ill defined or even they may be compatible with total normalcy and therefore, these changes are called non-specific ST-T wave changes. These could occur, as I told earlier, as a minor variation of normalcy. They could also appear because of electrolyte imbalances, because of any inflammation of the covering layer of the heart and so and so forth. Non-specific ST-T wave changes call for no treatment. At best, may be one can report any symptoms that an individual has to his doctor and get a repeat ECG done after six months to one year to compare the changes. But by far and large, these changes are benign and have no ill connotation.

An ST depression can be an outcome of an electrocardiogram (ECG) test. It can indicate health conditions like hypokalemia, myocardial ischemia, or a side effect of medications. If a doctor suspects there may be something wrong with a person’s heart, they may decide to order an • blocked blood vessels • thickening of the heart’s walls • • • This article explains what an ST depression is and what may cause it. It also outlines some possible treatments for specific causes of ST depressions. Share on Pinterest Thierry Dosogne/Getty Images ST depression is a term that refers to the position of the ST segment in a person’s ECG results. ECG results appear in a graph of spikes and valleys. The points on this graph represent different waves of electrical activity. There are three waves that make up this graph. These • P wave: This wave shows the electrical activity running through the heart to the atria. These are the two upper chambers of the heart. • QRS complex: This shows the electrical activity running through the heart to the ventricles. These are the two lower chambers of the heart. • T wave: This shows the electrical activity involved in the heart’s ventricular repolarization. This means it shows the electrical reset of the heart as it prepares for the next cardiac cycle. The ST segment appears in the ECG results. It corresponds to the area visible at the end of the QRS complex and the beginning of the T wave. A Clinically speaking, the ST segment represents the period in t...

First-degree heart block affects the electrical signal that makes the heart beat. It causes the heart to beat slower and in irregular patterns. Doctors call heart block atrioventricular (AV) block. It is a type of There are three degrees of heart block — first-degree heart block does not usually have symptoms or require treatment. People may experience AV block that is first, second, or third degree. First-degree heart block is the least serious. This article discusses what first-degree heart block is. It will also cover the causes, symptoms, treatment options, diagnosis methods, and prevention. Share on Pinterest alengo/Getty Images Heart block is a type of arrhythmia, which means irregular or abnormal heartbeat. When someone has heart block, it means their heart can beat slowly or miss beats. The heart pumps blood around the body and has four chambers. The atria are at the top, and the ventricles are at the bottom. Typically, electrical signals travel from the atria to the ventricles through a group of cells in between them, called the AV node. It is what makes the heart beat and push blood through the chambers. When someone has heart block, the electrical signals cannot get through the AV node. This stops the heart from pumping blood as well as it should. There are In some cases, a person can be born with heart block. This is called congenital heart block. However, it typically develops as a person ages. This happens when the AV node develops fibrosis, which is the thic...

"Ectopic" means something that is in an odd place or position. In the case of an ectopic beat, that oddly placed something is your heartbeat. You may hear people call this condition an early, missed, or extra heartbeat. It happens because something goes wrong with your heart's electrical system. The idea of your heartbeat going rogue may sound alarming. But in most cases, an ectopic beat is a harmless condition. It's also a common one. It's more common in older people. How It Happens Your Electrical signals control your heartbeat. These signals normally come from an area of cells known as the sinus node, which is in the upper right atrium. During a typical heartbeat, these electrical signals cause the two atria to squeeze or "contract." Afterward, the two ventricles do likewise. In some cases, electrical signals can also come from outside of the sinus node. These can cause either the atria or the ventricles to squeeze a little too soon. The result: an ectopic beat. Types of Ectopic Beats Not all ectopic beats are the same. There are two main types: Premature atrial contractions (PACs). These are ectopic beats that happen in the upper chambers of the Ectopic beats happen more commonly in the atria than in the ventricles. Symptoms If you have ectopic beats, you may not notice any symptoms. If you do have symptoms, the most common are sensations in your chest such as: • Fluttering • Pounding or jumping • Skipped or missed heartbeat • Become more aware that your heart is beati...

• Blood enters the right atrium and passes into the right ventricle. • The right ventricle pumps blood to the lungs where it becomes oxygenated. • The oxygenated blood is brought back to the heart by the pulmonary veins and passes into the left atrium. • Blood passes into the left ventricle and is pumped out to the body. • American Heart Association. • Davidovic G, Iric-cupic V, Milanov S, et al. Am J Cardiovasc Dis. 2013;3(3):120-8. • American Heart Association. • Choudhury M, Boyett MR, Morris GM. Arrhythm Electrophysiol Rev. 2015;4(1):28-34. doi:10.15420/aer.2015.4.1.28 • Bibas L, Levi M, Essebag V. CMAJ. 2016;188(17-18):e466-73. doi:10.1503/cmaj.160079 • Wettersten N, Fan D, Hsia HH. The American Journal of Medicine. 2015;128(9):e13-e14. doi:10.1016/j.amjmed.2015.04.024 • Page RL, Joglar JA, Caldwell MA, et al. Heart Rhythm. 2016;13(4):e136-e221. doi:10.1016/j.hrthm.2015.09.019 • Mortola JP, Marghescu D, Siegrist-Johnstone R. Eur J Appl Physiol. 2018 Jul;118(7):1397-1406. doi:10.1007/s00421-018-3871-6 • Lee JN, Whang MC, Kang BG. Int J Environ Res Public Health. 2022 Feb 13;19(4):2087. doi:10.3390/ijerph19042087.

What is ectopic rhythm? An ectopic rhythm is an irregular heart rhythm due to a premature heartbeat. Ectopic rhythm is also known as premature atrial contraction, premature ventricular contraction, and extrasystole. When your heart experiences an early beat, a brief pause usually follows. You generally become aware of it on the next beat, which feels much stronger. It can feel like fluttering, or as though your heart skipped a beat. Most people experience ectopic rhythm on occasion. This is generally harmless and resolves without medical intervention. If ectopic rhythm continues, seek medical treatment. A doctor can investigate the cause to determine if there’s an underlying condition such as electrolyte imbalance in the blood, heart injury, or heart disease. The specific diagnosis will determine your treatment. Premature atrial contraction An early heartbeat that originates in the heart’s upper chambers (atria) is a premature atrial contraction (PAC). In healthy children, irregular heartbeats are almost always PACs and are harmless. Premature ventricular contraction When the irregularity comes from the lower chambers of the heart (ventricles), it is called a premature ventricular contraction (PVC). The risk of PVC rises with age. You are at increased risk of PVC if you have a family history of PVC or if you have had a heart attack. Often, the cause of ectopic rhythm is unknown. Some of the factors that can cause or aggravate ectopic rhythm are: • alcohol • caffeine • smok...

Question: I don’t think I had a heart attack, but my EKG suggests it. Please explain the result. My EKG resulted in sinus rhythm but possible inferior or anterior infarct – age undetermined. I am 61 years old, Hispanic woman and there is no history of heart disease in my family. I weigh 148 lbs and do not smoke or drink alcohol. Submitted by Maria on 04/23/2015 This question comes up frequently, almost on a daily basis in patient care with regards to the ECG: A patient with no history of coronary artery disease with no previous symptoms and perhaps also even with no significant cardiac risk factors has an ECG interpretation suggesting prior heart attack (myocardial infarction or MI). There are occasions when the ECG is correct and the patient did have a previously unrecognized “silent” MI. More commonly, the ECG reading is a “false positive” interpretation. In other words, even though the pattern of voltage readings on the ECG has the appearance of a prior MI, in fact, the heart is normal &there was no MI. This is because to get a normal ECG tracing, the leads placed on the chest wall have to be on a certain “normal” distance from the heart muscle within the chest. It turns out that normal people vary greatly in the direction that the heart is positioned in the chest. So, even if the lead position is correct on the chest wall, some of the leads may be pretty far from the standard distance &the recorded signal can be too small, giving the appearance of a prior heart attack ...

"Ectopic" means something that is in an odd place or position. In the case of an ectopic beat, that oddly placed something is your heartbeat. You may hear people call this condition an early, missed, or extra heartbeat. It happens because something goes wrong with your heart's electrical system. The idea of your heartbeat going rogue may sound alarming. But in most cases, an ectopic beat is a harmless condition. It's also a common one. It's more common in older people. How It Happens Your Electrical signals control your heartbeat. These signals normally come from an area of cells known as the sinus node, which is in the upper right atrium. During a typical heartbeat, these electrical signals cause the two atria to squeeze or "contract." Afterward, the two ventricles do likewise. In some cases, electrical signals can also come from outside of the sinus node. These can cause either the atria or the ventricles to squeeze a little too soon. The result: an ectopic beat. Types of Ectopic Beats Not all ectopic beats are the same. There are two main types: Premature atrial contractions (PACs). These are ectopic beats that happen in the upper chambers of the Ectopic beats happen more commonly in the atria than in the ventricles. Symptoms If you have ectopic beats, you may not notice any symptoms. If you do have symptoms, the most common are sensations in your chest such as: • Fluttering • Pounding or jumping • Skipped or missed heartbeat • Become more aware that your heart is beati...