DIAGNOSIS OF ATRIAL FIBRILLATION. 9. Rotax® 600 EFI, Rotax® 600 ACE™. During development, the ventricular mass increases, and the QRS. the major terminal portion of the QRS complex is located on the opposite side of the baseline from the ST segment and T wave. Sensing is used to inhibiting or triggering pacing pulses. Never not use silver. Common findings. Du kan fortsätta skriva om du vill begränsa sökningen. • PPO plans must use an HHS-approved survey vendor and have their enrollee survey sample frame reviewed and approved by. The premature impulse may depolarize the atria and subsequently the ventricles, provided that the myocardium and conduction system have repolarized. com. ECG Paper Grids. – Narrow QRS complex, regular rhythm: 50 to 100 J – Narrow QRS complex, irregular rhythm: 120 to 200 J – Wide QRS complex, regular rhythm: 100 J • Wide QRS complex, irregular rhythm: defibrillation dose (not synchronized) • Follow your specific device’s recommended energy level to maximize the success of the first shockAnswer: A. aVL shows qR complex. The strip should be made up of 30 large squares. Figure 3 - Determining the Rhythm Source Also look at the quality and quantity of P-waves before each QRS. A QRS duration of 120 ms (0. The appearance of LBBB may cause no QRS axis shift in the frontal plane or variable degrees of left and superior axis shift (Figure 4-2). This potential has both size and. Travelling to and from residence to place of duty. Eleganta och mycket välbyggda. 00, you could have made a profit. The QRS duration is generally <0,10 seconds but must be <0,12 seconds. As the impulse travels at a speed of three meters per second through the AV node and simultaneously down the bundle branches and His‐Purkinje system, it typically produces a narrow QRS complex of 80 mseconds duration. A QRS, on the other hand, is a corporation that is always wholly owned by the REIT and is disregarded for federal income tax purposes. . inferior D. Otherwise there is discordance (opposite directions of QRS and T) which might be due to pathology. anterior, The duration of the QRS complex should be _______ milliseconds or less in a healthy adult. A vector is a physical quantity that has both magnitude and direction in space. Parin huoneen päässä oli esillä ruotsalaista osaamista eli -QRS Neptunus kaiuttimet, Advantage S-250 monopäätteet, Advantage S-2 etuvahvistin, S. If heart rate exceeds 100 bpm, then rhythm may be multifocal atrial tachycardia (MAT). QRS Resources. Count the number of large squares in between 1 R-R interval and divide by 300. Bradyarrhythmias include sinus node dysfunction and atrioventricular block, and are characterized by a resting heart rate 60/minutes. 12 sec) and bizarre appearing. Neptunus is a passive item added in The Binding of Isaac: Repentance. Running it off a DACmini is a dream! Highly recommended and can't wait to try an audeze vegan pad on the cans to. Can also cause failure to capture as spikes low amplitude. A QRS duration greater than 140 mseconds favors a diagnosis of VT. The QRS complex will typically be normal (0. Insert an advanced airway. However, as I discussed last time, the technology has a dubious history. Minimum Denominator Size Required for Inclusion in QRS Scoring. Neptunus ( symbol: ♆) är den åttonde planeten från solen. The QRS width is useful. Before mobile phones and coast-to-coast cell coverage, roadside diners and gas stations did good business selling foldout maps to travelers who passed through town. A synchronized shock is delivered at this precise moment to avoid causing or inducing ventricular fibrillation. Produkter på bilden: Asus EA-N66, Asus RT-AC66U, Bladelius Embla Classic, Burmester 956 MK2, Canal Digital HD PVR 5720SX, Nintendo Wii U Premium 2012 32GB, QRS Neptunus, Samsung UE65F8005, Synology DiskStation DS214play, Transparent Cable MusicWave Plus 2Banana - 2Banana (par) 2,4m. 2. Left bundle branch pacing is a novel pacing modality that can bypass the pathological or disease-vulnerable region in the cardiac conduction system, to provide physiological pacing modality for patients. The default is 0. Question 10. It usually is between 250-350 BPM. Osborn Wave (J Wave) Overview. 6 In this example, atrial fibrillation (AF) was. Postad 14 april 2012 - 21:59. Divide the number 300 by your answer above. ST segment deviation occurs in a wide range of conditions, particularly acute. Es la morfología típica de la derivación V3. rS: onda R baja seguida de onda S. 38 – 0. Monomorphic VT. S wave of greater duration than R wave or >40 ms in leads I and V 6 in adults. 69 versus 0. Referring a Death Case to the Coroner/Medical Examiner QRS-2034 : Viewing the Processing History of an Amendment QRS-2046 . 5 V, impedance of 750 Ω, and QRS wave width of 98 ms after pacing, which was consistent with the preoperative QRS wave pattern (Fig. Introduction. Josephson’s. • Quality Rating System (QRS) Measure Technical Specifications should be followed for all required measures. Defibrillation. ECG shows sinus bradycardia of 45 bpm with PR interval 210ms, QRS duration 115ms, QT interval 380ms and a small R wave in aVR of approximately 2mm in height. b. Factors such. The global QRS duration – the QRS duration measured from the pacing stimulus to the QRS offset using all 12 standard ECG leads – should enable an intuitive and perfect diagnostic criterion. QRS duration <0,12 seconds but slightly prolonged. e. Introduction. A bundle branch block (BBB) is a block of the right or the left bundle branches that propagate depolarizations from the Sino-Atrial node to and through the ventricles. There are a considerable number of patients who have a short P-R interval, normal QRS complex and bouts of tachycardia. Element: 3 st 10" baselement varav en är passiv. 10 second; Lesson #2: Interpretation - 312. Pacing via a pacing wire that is inserted through a central large vein into the right ventricle. Normal sinus rhythms have a rate of 60 to 100 beats per minute, the atrial and the ventricular rhythms are regular, the P wave occurs prior to each and every QRS complex, the P waves are uniform in shape, the length of the PR interval is form 0. 4 ms, sensed amplitude of 5. The QRS complex is often used to determine the axis of the electrocardiogram, although it is also possible to determine a separate P wave axis. 100 B. Neptunus mengelilingi Matahari hanya sekali sejak pertama kali ditemukan pada tahun 1846. Our bus ride from the hotel took us about 20 minutes and was very comfortable. Home ECG Library. QRS wave complex. fusion beats are therefore common. First-degree AV block. The QRS-01 (Quality Requirements for Suppliers) and associated modules QRS-XXX is the Quality Manual applicable to all Suppliers when referred to within a Purchase Order or Agreement, and shall be flowed-down to all Sub-tier Suppliers. 04 – 0. For management, see “Management of Wide Complex Tachycardia”. Figure 4. Atrial fibrillation (AF) is the most common sustained heart rhythm disturbance worldwide, affecting an estimated 2. The hallmark electrocardiographic (ECG) finding of WPW pattern or preexcitation consists of a short. ST-T changes always occur in the presence of LBBB. The intervals are 98% confidence intervals (the mean is presented in the parenthesis). e left bundle branch block appearance). She becomes diaphoretic, and her. Di tata surya ini ada beberapa planet yang disebut sebagai raksasa gas. The 2023 Ski-Doo Renegade Sport is the sled that can do it all when it comes to sharp trail handling, fun-filled engine performance, and all-day riding comfort - all at a value-packed price on the advanced REV Gen4 platform. Tomodachi Life codes QRs Mii – Game of Thrones. c. Classically a hypothermic patient is bradycardic and their ECG will show J-waves. Neptunus boats for sale on YachtWorld are available for an assortment of prices from $79,833 on the lower-cost segment, with costs up to $4,000,000 for the most extravagant model yachts. CMS calculates ratings on a 1-to-5 scale (5 is the highest) each year for eligible QHPs in all. There is a left axis deivation with rS complexes in the inferior leads and qR complexes in the high lateral leads. First-Degree Block: The husband comes home late every day. In addition to high-quality CPR, what intervention should be a priority for the team? Select the correct answer to this question. Characteristics. The QRS duration will be slightly prolonged (the prolongation ranges between 0. Myocardial ischemia may present with any degree of T-wave inversion. Sounds run from backing and from between speakers. This could indicate a bundle branch block in which there is a delay in the passage of heart's electrical signals along the bottom of the heart. 20 seconds. 12 sec) and a delta wave (slurred and broad upstroke of the QRS complex), representing early. . Synchronized cardioversion involves the delivery of a low-energy shock which is timed or synchronized to be delivered at a specific point in the QRS complex (see the image below). Planet Neptunus memiliki periode orbit 164,79 tahun. Den 24 augusti 2006, då Internationella astronomiska unionen beslutade att Pluto inte längre var en planet, blev Neptunus den yttersta planeten i solsystemet. 2002Confirm details. Sequence of conduction in LBBB: 1) Conduction delay means impulses travel first via the right bundle branch (black arrow) 2) Septum is activated. Atrioventricular (AV) conduction is evaluated by assessing the relationship between the P waves and QRS complexes. In the setting of a broad QRS complex, such as in a bundle branch block or a paced rhythm, the QT interval is likely to be prolonged. The sky’s were ominously overcast over the city of Hobart as we prepared our northward sail toward “The Great Small Cities of the World”. 7,9 Low voltage can be caused by three main factors: cardiac voltage generation, extracardiac transmission, and equipment-related issues. The efficacy of CRT remains controversial in patients with a narrow QRS <130 ms. 08-0. Diagnosis is supported by ECG findings of dissociated P-wave activity, fusion or capture beats, uniformity of QRS vectors in the V leads (concordance) with discordant T-wave vector (opposite QRS vectors), and a frontal-plane QRS axis in the. It represents the time for electrical activity to move between the atria and the ventricles. 80 bpm. hrthm. comThe QRS-01 (Quality Requirements for Suppliers) and associated modules QRS-XXX is the Quality Manual applicable to all Suppliers when referred to within a Purchase Order or Agreement, and shall be flowed-down to all Sub-tier Suppliers. Interesting comments about the HE-500 being bright as I find the treble somewhat recessed and some coloration in probably what is the lower mids or upper bass registers. 2 seconds . ECG Rhythm Evaluation. Storebror till Saturnus. QRS 348 5th Street Northumberland, PA 17857; Point Twp. Technically, a Q wave indicates that the net direction of early ventricular depolarization (QRS) electrical forces projects toward the negative pole of the lead axis in question. Dark, cold and whipped by supersonic winds, giant Neptune is the eighth and most distant major planet orbiting our Sun. Ventricular rate of 82/min with an atrial rate of 80/min. The results should not be used alone to determine medical treatment. 987. A regular wide QRS complex tachycardia at 188 bpm with left bundle-branch block morphology, left-superior axis, and precordial transition at lead V6 is shown. The vertical axis represents voltage. b. 12 seconds. The Mandarin and Cantonese words mean (approximately): “The Brightest; Star of Water; Star of Gold; Sphere of Ground (Earth); Sphere of Moon, Star of Fire; Star of Wood; Star of Soil (Dirt); Star of the King of Heaven; Star of the King of the Ocean; Star. 2nd Degree AV Block (Mobitz II) •PR interval remains constant before and after the non-conducted atrial beats •Usually occur in the infranodal conducting system •Often have co-existing fascicular or BB blocks •Often due to permanent structural defects in the infranodal conducting system •May progress suddenly to complete heart blockCardiac arrhythmias are accelerated, slowed, or irregular heart rates caused by abnormalities in the electrical impulses of the myocardium. 5. , Depolarization then arrives at the _____ node. Figure 6. AKA: Atrial ectopics, atrial extrasystoles, atrial premature beats, atrial premature depolarisations. Specifically, an ECG tracing shows how the depolarization wave, which is a wave of. The QRS complex of a PVC is widened, often notched, and typically has a QRS duration >0. Gjutet chassie, dubbla magneter och fasplugg. Low voltage is defined as a QRS amplitude of 5 mm (0. Tachyarrhythmias (heart rates > 100/minute) are classified as. Pro-Ject Tubebox S & Auralic. Namun, planet Uranus mempunyai cincin sangat tipis. Low voltage is defined as a QRS amplitude of 5 mm (0. 0 V, pulse width of 0. a) Pre-Ejection Period (PEP) – measured from beginning of QRS to opening of aortic valve. Plausibly, the first computerized and automated electrocardiogram (ECG) signal processing algorithm was published in the literature in 1961, and since then, the number of algorithms that have been developed to-date for the detection of the QRS-complexes in ECG signals is countless. Depolarizations are represented by the P-wave (atrial lead) and QRS complex (ventricular lead). Although the complete compensatory pause is very typical of the premature ventricular complex (PVC), there are instances where it does not occur. These are all regularly irregular rhythms. Fusion beat. The PR interval begins at the start of the P wave and ends at the beginning of the Q wave. The QRS complex will typically be normal (0. Removing Certifier from Case QRS-2052(2) QRS width (“QRS-interval”) The QRS-interval is normally less than 0. 01). 001) and QRS duration ( P <0. 12 seconds), the arrhythmia is said to be a narrow complex tachycardia. Study Chapter 17 Cardiovascular Emergencies flashcards. 12 s) or more is required to diagnose a complete left bundle branch block. AVNRT for two. Normally, there is a P wave that precedes each QRS complex by a fixed PR interval of 120 to 200 milliseconds. Planet ini dinamai dari dewa lautan Romawi. The EKG rhythm will appear regular unless atrial fibrillation present. However, all three waves. QRS Duration; QT Interval; QRS Axis . Akan tetapi, Neptunus adalah yang terkecil, yaitu dengan radius khatulistiwa hanya 24. Amending a Death Case: Medical QRS-2024 : Editing an Amendment Request QRS-2032 . Count the number of small squares in between 1 R-R interval and divide by 1500. Courtesy of ECGwaves. First time sailors (polywogs), were led by seasoned sailors (shellbacks) in events which. Aggregation Methods for QRS Clinical Measures with Multiple Indicators. 141 mS. A. 5 billion kilometers), Neptune is the fourth-largest planet by diameter and third-largest by mass, having a diameter of 30,598 miles (49,244 kilometers). É a morfologia típica da derivação V3. Monomorphic VT: Very broad complexes (~ 200 ms in V5-6) Northwest axis (-120 degrees) Brugada’s sign — the distance from the onset of the QRS complex to the nadir of the S-wave is > 100ms. C. Normal limits for ECG parameters during neonatal period (Davignon et al) These reference values are the best available for the neonatal period. Fragmented QRS on a 12‐lead ECG: a predictor of mortality and cardiac events in patients with coronary artery disease. Sandhu R, Bahler RC. D. Evanelpus: 15th Jul 2010 15:45: Are you sure it wasn't John Travolta? Pontius Navigator: 15th Jul 2010 15:46: NR, not sure if it is in RAF QRs but in dress regs. QRS-2022C-M . A six second interval would be 30 large squares. Find out about the blue world's orbit, which of Neptune's moons is the largest, and how the planet is home to the most severe. 50 per share, expecting the stock to trade sideways for 60 days. Each atrial activation leads to a ventricular. Particular attention should be paid to their size in relation to the preceding QRS complex, as HATW may appear ‘normal’ in. REVIEW AND ANALYSIS. 5 mV) or less in all of the frontal plane leads and 10 mm (1. 250. Eating red meat, The nurse reviews the ECG strip of a client admitted with dizziness and syncope. overdrive pacing. However, it can take on various waveform morphologies that may indicate benign or clinically significant injury or insult to the myocardium. At some point,. Anytime you analyze a rhythm you want to always ask yourself the. As the endocardial cardiomyocytes depolarize slightly earlier than the outer layers, a typical QRS pattern occurs (figure). ST segments and T waves should be discordant with the QRS complex i. Dark, cold, and whipped by supersonic winds, ice giant Neptune is the eighth and most distant planet in our solar system. QRS duration was 116 ± 29 ms in NYHA class II and 119 ± 29 ms in NYHA class III–IV with QRS ≥120 ms found in 37% vs. Sounds run from backing. ALWAYS rule out: Aortic Dissection (can present as Inferior STEMI – look for. FRIDAY August 4th - United states to Canada - by Sea The Plan: Since we are members of the Cruise Critic Roll Call, we will be meeting with over 165 other members for a meet and mingle/greet at 10 am, after that Barbara will participate in a "Cabin Crawl" whereby certain…By definition, a Q wave on the electrocardiogram (ECG) is an initially negative deflection of the QRS complex. The electrical signal to make the heartbeat starts. This is a very common and significant finding. The interpretation of 12-lead resting ECG in patients with a definitive diagnosis or with the suspicion of a cardiomyopathy represents a cornerstone for the diagnostic work up and management of patients. The minimum effective plasma concentration of flecainide is about 200 ng/mL while optimal range is between 200 ng/mL and 400 ng/mL [ 64 ]. Electrical alternans with sinus tachycardia is a highly specific sign of pericardial effusion, usually with cardiac tamponade, but it is only modestly sensitive. sinus rhythm is often only slightly slower than the arrhythmia so the dominant rhythm may be intermittent AIVR and sinus. a. The following description is taken from our excursion brochure. Background The electrocardiographically quantified QRS duration measures ventricular depolarization and conduction. Menurut E-Modul IPA Fisika, diameter Neptunus adalah 49. The aims of this study are to evaluate the response to CRT in patients with a. Study with Quizlet and memorize flashcards containing terms like The contraction of the heart begins with autorhythmic depolarization of the _____ node located in the superior portion of the posterior atrial wall. 75 times/min, Suppose a patient develops a myocardial infarction that disables the sinoatrial node. A negative T-wave is also called an inverted T-wave. Before beginning ECG interpretation, you should check the following details: Confirm the name and date of birth of the patient matches the details on the ECG. Then use the function with any multivariate multiple regression model object that has two responses. Utheemu, Maldives is famed as the birthplace of Sultan Mohamed Thakurufaanu, who with his brothers and his companions fought an eight-year-long war to drive out the Portuguese invaders who occupied the Maldives from 1558 to 1573. A “normal” EKG is one that shows what is known as sinus rhythm. ECG 1 showed a wide QRS tachycardia of rate 120–140/min with varying RR intervals. A normal QRS should be less than 0. com QRS duration has been shown to be associated with adverse outcomes in patients with heart failure, 5,6 and decreased survival is more likely after myocardial infarction associated with impaired left ventricular function or heart failure. INTRODUCTION. 5 × 10 = 75 beats per minute. This means that that neither the left or right bundle branch conducts the electrical impulse. 12 to 0. Second-degree AV block Mobitz type I exhibits the Wenckebach phenomenon, which. ; High voltage exists if the amplitudes are too high, i. MPB Músicas Para Ouvir No Trabalho - MPB As Melhores Antigas - As 100 Melhores Da MPBMPB Músicas Para Ouvir No Trabalho - MPB As Melhores Antigas - As 100 Me. T. Diagnosis is by electrocardiography; symptoms and treatment depend on degree of block, but treatment, when necessary, usually involves pacing. Stress D. Gouaux and Dr. 024 Crossref Medline Google Scholar; 8 Pourafkari L, Ghaffari S, Nader ND. These complexes are premature atrial complexes (PACs). Background—Fragmented QRS (duration 120 ms) on a 12-lead ECG represents myocardial scar in patients with coronary artery disease. Fifteen minutes earlier she had been awake and able to give a history to paramedics. Neptune was the Roman god of waters and seas, who controlled winds and storms. Qrs Neptunus. Heart rate is normal (60-100 bpm). Electrical vectors. Search first posts only. 50 (0. Yes,. The P-wave, PR interval and PR segment. This tool is a statistical model and is not a substitute for an individual treatment plan developed by a health care provider with personal knowledge of a specific patient. Jeff with admin. Accidental misplacement of the limb lead electrodes is a common cause of ECG abnormality and may simulate pathology such as ectopic atrial rhythm, chamber enlargement or myocardial ischaemia and infarction. First-degree heart block. There is a late transition (persistent S-wave) in the precordial leads. On a 12 lead ECG this is usually a 10 second recording from Lead II. NYSDOH will only be collecting measures and numerators included in the QRS Measure set. The signal is conducted first through the healthy branch and then it is distributed to the damaged side. e the upper reference limit). 95. 2nd degree block type I. 360 mS. 9. CMS calculates QRS star ratings based on validated clinical quality and survey measure data submitted by eligible issuers for each of their products in the Exchange. 4. "The only difference is the heart rate. Uncertifying a Death Case QRS-2047 : Relinquishing a Case QRS-2048 . Strictly speaking the term T-wave inversion refers to T-waves that are 1 to 5 mm negative (deep). QRS 1325 Boyles Run Road Sunbury, Pa 17801; Milton Fire Dept. Wolff-Parkinson-White syndrome (WPW) is the commonest form of ventricular pre-excitation. 422 mS. Cardiac voltage generation refers to conditions that. 130 D. 2002. Tomodachi Life codes QRs. Myocardial hypertrophy D. Biventricular pacing for atrioventricular block and systolic dysfunction. Inverted, lost, or late P wave before QRS and T. It is typically a small positive deflection from the isoelectric baseline that occurs just before the QRS complex. There are several brands and models of transcutaneous external pacemakers, but they all follow the same basic design. Rhythm is Regular. Synchronized cardioversion is a treatment technique that uses a sensor to deliver a shock that is synchronized with a peak in the QRS complex. Treatment is. Cuối cùng đưa ra kết quả điện tâm đồ. The inhibition of pacing is appropriate when there is intrinsic cardiac activity; the presence of spontaneous atrial. However, electrical alternans is. In the guidelines for cardiac resynchronization therapy (CRT), there is a gap between the Japanese Circulation Society (JCS) criteria, which specify a QRS duration of ≥120 ms, and other countries, with a QRS ≥ 130 ms. Arken 2002 Hifi, Göteborg 5. The QRS complex is a portion of the ECG that represents the electrical impulse as it is being distributed by the bundle branch system throughout the ventricles. "The P waves will be shaped differently. These five steps must be followed regardless of how simple of complex the tracing is you are reviewing. QT is the duration of the QT interval. LITFL ECG library is a free educational resource covering over 100 ECG topics relevant to Emergency Medicine and Critical Care. %PDF-1. At the time of assessment she is drowsy (GCS 13) with a heart rate of 46 bpm and BP 100/60. Normally, the Q wave reflects ventricular septal depolarization, and its duration does not exceed 0. QRS Complex: The QRS represents depolarization of the ventricles and ventricular conduction time of the electrical impulse. The QT interval is corrected because it varies depending on the heart rate, so they came up with. The QRS duration is generally <0,10 seconds but must be <0,12 seconds. When the axis moves further and is more negative than −30° it is called marked left axis deviation (MLAD. septal C. C) jugular venous distention. 12 seconds. J point in a) normal; b) c) J point elevation; d) J point depression; e) with J wave (Osborn wave) Note: The letter J on the ECG defines 2 totally different and unrelated events. The EKG rhythm will appear regular unless atrial fibrillation present. 01 to 0. In addition to stimulation artifacts, ventricular pacing yields wide QRS complexes with LBBB morphology (i. The QRS width is useful in determining the origin of each QRS complex (e. P waves occurring at 0. The nurse correctly identifies the client's heart rate as. It was reconstructed in 2013. If QRS duration is ≥ 0,12 seconds (120 milliseconds) then the QRS complex is abnormally wide (broad). 2. Engine. QRS complexes are broad with a LBBB morphology, indicating the presence of a ventricular pacing electrode in the right ventricle. Här med dubbla 10" i isobarik och en 10" slavbas. A bundle branch block refers to a widened QRS complex and vector changes in an ECG reading. If the R-R interval spans more than ____ large boxes on the ECG graph paper, the heart rate is less than 60/min. In 2011 Neptune completed its first 165-year orbit since its discovery in 1846. Being able to determine the electrical axis can give insight into underlying disease states and help steer the differential diagnosis towards or away from certain diagnoses. ) The pacemaker lead is usually in the right ventricular apex; thus, the paced. The QRS complex refers to the combination of the Q, R, and S waves, and indicates ventricular depolarization and contraction (ventricular systole). Myocardial damage E. there are no dropped QRS complexes, unlike some other forms of AV block discussed later). 55. QRS Complex | Learn the Heart - Healionarrow or wide QRS complexes, depending on its origin. Typical ECG of LAFB, demonstrating: rS complexes in leads II, III, aVF, with small R waves and deep S waves. The term gigantic T-wave inversion is used if the T-wave is deeper than 10 mm. CMS calculates ratings on a 1-to-5 scale (5 is the highest) each year for. Cardiovascular disease is the first cause of death around the world. The numbers are the time inervals. It is caused by re-entry in the fascicles of the left bundle branch (i. The nurse receives a telephone call from a client with an implanted pacemaker who reports a pulse of 68 beats per minute, but the pacemaker rate is set at 72 beats per. We hypothesized that CHF risk increases with longer QRS interval in individuals free of CHF. AV junction ablation should be added in the case of incomplete biventricular pacing (90-95%) due to conducted AF. Ventricular fibrillation (VF) is the most important shockable cardiac arrest rhythm. Once you have calculated the number of big squares separating QRS complexes (let's use 3. 2 secs (3-5 small squares) QRS: <0. The multi-indicator showed that the pacing lead recorded a clear His bundle potential with a pacing threshold of 1. AJR) = Due to enhanced automaticity in AV nodal cells. Ventricular depolarization is represented by the QRS complex.