#Pr Interval

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#Pr Interval Reel by @the_med_explorer - Follow for more @the_med_explorer | 𝗛𝗲𝗮𝗿𝘁 𝗕𝗹𝗼𝗰𝗸𝘀 (𝗔𝗩 𝗕𝗹𝗼𝗰𝗸) 🫀⚡ 𝗖𝗼𝗻𝗰𝗲𝗽𝘁 𝗖𝗹𝗮𝗿𝗶𝘁𝘆 Heart block (AV block) is a delay or c
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@the_med_explorer
Follow for more @the_med_explorer | 𝗛𝗲𝗮𝗿𝘁 𝗕𝗹𝗼𝗰𝗸𝘀 (𝗔𝗩 𝗕𝗹𝗼𝗰𝗸) 🫀⚡ 𝗖𝗼𝗻𝗰𝗲𝗽𝘁 𝗖𝗹𝗮𝗿𝗶𝘁𝘆 Heart block (AV block) is a delay or complete interruption in the conduction of electrical impulses from the atria to the ventricles — directly affecting cardiac rhythm and output. 𝗡𝗼𝗿𝗺𝗮𝗹 𝗖𝗼𝗻𝗱𝘂𝗰𝘁𝗶𝗼𝗻 (𝗤𝘂𝗶𝗰𝗸 𝗥𝗲𝘃𝗶𝘀𝗶𝗼𝗻) • SA node generates impulse (natural pacemaker) • Impulse → Atria → AV node • AV node delay (~0.1 sec) • Bundle of His → Bundle branches → Purkinje fibers • Ventricular contraction 𝗧𝘆𝗽𝗲𝘀 𝗼𝗳 𝗛𝗲𝗮𝗿𝘁 𝗕𝗹𝗼𝗰𝗸𝘀 ➤ 𝟭𝘀𝘁 𝗗𝗲𝗴𝗿𝗲𝗲 𝗔𝗩 𝗕𝗹𝗼𝗰𝗸 • Delayed conduction through AV node • All impulses conducted • PR interval > 0.20 sec ➤ 𝟮𝗻𝗱 𝗗𝗲𝗴𝗿𝗲𝗲 𝗔𝗩 𝗕𝗹𝗼𝗰𝗸Some impulses fail to conduct • Mobitz I (Wenckebach): Progressive PR ↑ → dropped beat • Mobitz II: Constant PR → sudden dropped beat ➤ 𝟯𝗿𝗱 𝗗𝗲𝗴𝗿𝗲𝗲 (𝗖𝗼𝗺𝗽𝗹𝗲𝘁𝗲) 𝗕𝗹𝗼𝗰𝗸 • No atrial impulses reach ventricles • AV dissociation (atria & ventricles beat independently) • Ventricular rate < 40 bpm (escape rhythm) 𝗖𝗮𝘂𝘀𝗲𝘀 • Ischemic heart disease (MI) • Degenerative fibrosis (aging) • Drugs (β-blockers, CCBs, digoxin) • Electrolyte imbalance (↑ K⁺) • Myocarditis / infections • Post-cardiac surgery 𝗦𝗶𝗴𝗻𝘀 & 𝗦𝘆𝗺𝗽𝘁𝗼𝗺𝘀 • Fatigue • Dizziness / syncope • Palpitations • Shortness of breath • Chest discomfort𝗧𝗿𝗲𝗮𝘁𝗺𝗲𝗻𝘁 𝗔𝗽𝗽𝗿𝗼𝗮𝗰𝗵 • Treat underlying cause • Medications (if indicated) • Temporary pacing (emergency cases) • Permanent pacemaker (especially in 3rd degree block) 𝗞𝗲𝘆 𝗧𝗮𝗸𝗲𝗮𝘄𝗮𝘆𝘀 🔑 • 1st degree → delay only • 2nd degree → some beats dropped • 3rd degree → complete block → pacing usually required Understanding conduction abnormal
#Pr Interval Reel by @abdullah_89othman - AV Blocks - Progressive Conduction Failure: 1. First-Degree AV Block: Consistent delay at the AV node. Prolonged PR interval (>200 ms). Every impulse
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@abdullah_89othman
AV Blocks – Progressive Conduction Failure: 1. First-Degree AV Block: Consistent delay at the AV node. Prolonged PR interval (>200 ms). Every impulse eventually reaches the ventricles. 2. Mobitz I (Wenckebach): Progressive PR interval lengthening until a P wave is blocked (a QRS is dropped). Typically at the AV node. Usually benign. 3. Mobitz II: Intermittent, sudden failure of conduction without preceding PR prolongation. Block typically infranodal (Bundle of His or below). Carries significant risk of progression to complete heart block. --- ✨ @dailycardiology #Cardiology #ECG #AVBlock #HeartBlock #MedEd Medical SinusRhythm Wenckebach CardiacConduction
#Pr Interval Reel by @nursegwennyrn - Heart Blocks made easy for anyone stuck on cardiology in nursing school, medic school, or just refreshing your cardiac knowledge! First Degree: prol
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@nursegwennyrn
Heart Blocks made easy for anyone stuck on cardiology in nursing school, medic school, or just refreshing your cardiac knowledge! First Degree: prolonged PR interval Second Degree Mobitz I: longer, longer, longer PR interval then a dropped ventricular contraction Second Degree Mobitz II: intermittent dropped ventricular contraction Third Degree: regular atrial contraction, regular ventricular contraction, but the two are functioning independent of one another Intended for educational purposes only. Always follow your local protocols. #ERNurse #EmergencyNurse #CEN #CFRN #CTRN ICUNurse NCLEX NursingSchool NursingStudent Nurse ICUNurse CCRN FlightNurse FlightMedic FPC paramedic criticalcare HEMS
#Pr Interval Reel by @yournursingeducator (verified account) - Comment "ECG" And I'll send you the EKG Interpretation Cheat Sheet with everything you need to break down rhythms step by step 🫀 You don't need to
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@yournursingeducator
Comment “ECG” And I’ll send you the EKG Interpretation Cheat Sheet with everything you need to break down rhythms step by step 🫀 You don’t need to memorize the whole strip Just understand what each wave means The P wave represents atrial contraction The QRS complex shows ventricular contraction The T wave reflects ventricular relaxation 📈 Ask yourself: • What is the heart rate • Is the rhythm regular or irregular • Is there a P wave before every QRS • What is the PR interval (should be 0.12 to 0.20 seconds) • Is the QRS narrow or wide 🧠 These five questions will guide your rhythm interpretation Save this post and tag a classmate who needs this breakdown 📚 More guides in the link in bio #nclexrn #ekginterpretation #nursingstudent #nclexprep #cardiacnursing #ecg #rhythmstrip #clinicalskills #printerval #qrscomplex
#Pr Interval Reel by @ecg_classroom - A 12-lead ECG records changes in electrical activity of the heart during each part of the cardiac cycle that is observed from 12 different views (lead
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@ecg_classroom
A 12-lead ECG records changes in electrical activity of the heart during each part of the cardiac cycle that is observed from 12 different views (leads). The conduction of the heart’s electrical impulses is detected through the skin by 10 electrodes, six placed on the chest and four on the limbs. The trace is displayed on a cardiac monitor or recorded by the ECG machine. Electrocardiogram waveform The heart muscle contracts and relaxes in response to the electrical impulse that arises in the sinoatrial node and spreads through the conduction system across the atria and ventricles. This electrical activity is recorded as the ECG waveform on graph paper. The paper is divided into small squares of 1 mm each. Standard ECG paper speed is 25 mm/s per one square (1 mm) which equals 0.04 s horizontally or 0.1 mV vertically. Each waveform deflection is related to the electrical events of depolarisation and repolarisation occurring in the cardiac tissue. A normal ECG waveform (Figures 30.2 and 30.3) consists of: P wave: should be symmetrically rounded and, except for the lead aVR, it should be positive (upright). PR interval: starts from the beginning of the P wave and ends at the beginning of the QRS complex. QRS complex: it is made up of three waves. If the first deflection of the QRS complex is downward, it is called Q wave and it represents septal depolarisation. The normal Q wave should not be wider than 1 mm and deeper than a quarter of the height of the R wave. Small Q waves may be seen in leads I, II, aVL, V5 and V6. The first upward deflection is called the R wave and it is generated by the depolarisation of the bulk of the ventricles. The R wave in the precordial leads #ecg #ekg #ecgquiz #ecginterpretation #ecgclassroom #ecg_machine #cardio #cardiology #radiology #neurology #pathology #orthopedics #oncology #nursing #neurology #paramedical #doctor #medicine #medical #hospital #holter #heartsurgery #hospital
#Pr Interval Reel by @studymedicall - 🫀 گره‌های هدایتی قلب؛ سامانهٔ هماهنگ‌سازی الکتریکی میوکارد سیستم هدایتی قلب شبکه‌ای از سلول‌های تخصص‌یافتهٔ میوکاردی است که مسئول تولید و انتقال پتا
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@studymedicall
🫀 گره‌های هدایتی قلب؛ سامانهٔ هماهنگ‌سازی الکتریکی میوکارد سیستم هدایتی قلب شبکه‌ای از سلول‌های تخصص‌یافتهٔ میوکاردی است که مسئول تولید و انتقال پتانسیل‌های الکتریکی‌اند تا انقباض دهلیز و بطن با نظمی دقیق انجام گیرد. این سامانه از چهار جزء اصلی شکل گرفته است که مسیر ریتم سینوسی طبیعی را می‌سازند: --- ۱. گره سینوسی (SA Node) در دیوارهٔ فوقانی دهلیز راست، منشاء اصلی ریتم قلبی است. سلول‌های آن فاقد پتانسیل استراحت پایدارند و به‌طور خودکار دپولاریزاسیون تدریجی ایجاد می‌کنند. جریان یونی Na⁺ و Ca²⁺ سبب پدید آمدن موج **P** در ECG می‌شود. --- ۲. گره دهلیزی–بطنی (AV Node) در سپتوم بین‌دهلیزی قرار دارد و تنها مسیر فیزیولوژیک انتقال پیام از دهلیزها به بطن‌هاست. هدایت در این گره با **تأخیر کوتاه (حدود ۰٫۱ ثانیه)** انجام می‌شود تا دهلیز پیش از انقباض بطنی تخلیه گردد. این فاز با **PR interval** متناظر است. --- ۲. دستهٔ هیس و شاخه‌های چپ و راست پس از گره AV، تحریک وارد دستهٔ هیس شده و در سپتوم بطنی به دو شاخهٔ اصلی تقسیم می‌شود؛ این مسیر با هدایت سریع جریان، زمینهٔ دپولاریزاسیون هم‌زمان بطن‌ها را فراهم می‌کند. --- ۴. شبکهٔ پورکینژ (Purkinje Fibers) الیاف انتهایی با قطر بزرگ و Gap Junction فراوان که انتقال پتانسیل را با بیشترین سرعت هدایت می‌کنند. این مرحله منجر به موج **QRS** در نوار قلبی و انقباض یکپارچه‌ی بطن‌ها می‌شود. --- در مجموع، توالی SA→AV→His–Purkinje مدار دقیق الکتریکی قلب را می‌سازد. هر اختلال در این مسیر (مانند بلوک AV یا آسیب ایسکمیک SA) به آریتمی منجر می‌شود.
#Pr Interval Reel by @ninjanerdlectures - Still guessing your way through ECGs? Let's fix that right now. Zach breaks down the P wave, QRS complex, and PR interval in a way that actually make
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@ninjanerdlectures
Still guessing your way through ECGs? Let’s fix that right now. Zach breaks down the P wave, QRS complex, and PR interval in a way that actually makes sense. No fluff. Just high-yield, exam-ready clarity. If this clip helped you even a little, imagine what the full lecture will do. 👉 If you liked this clip and want the FULL deep dive, head over to the Ninja Nerd YouTube channel and watch MASTER ECG/EKG INTERPRETATION. Link in bio! #ECG #MedStudentLife #NinjaNerd
#Pr Interval Reel by @medicalmania007 - 1️⃣st degree: PR constant 👉Look for 1:1 P:QRS ratio 👉PR >0.20 sec (25mm/sec) 2️⃣nd degree type I (Mobitz I): PR variable 👉Look for a progressive l
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@medicalmania007
1️⃣st degree: PR constant 👉Look for 1:1 P:QRS ratio 👉PR >0.20 sec (25mm/sec) 2️⃣nd degree type I (Mobitz I): PR variable 👉Look for a progressive lengthening of the PR interval preceding dropped QRS 👉Expect PR to reset following dropped QRS 2️⃣ nd degree type Il (Mobitz lI): PR constant 👉Look for constant PR interval preceding dropped QRS *(2:1 AV block = not likely enough information to determine type I vs type ll) 3️⃣rd degree: PR variable (not a true PR) 👉Look for a variable and constantly changing PR interval indicating no communication between atria and ventricles 👉Note the QRS may be narrow or wide if the AV junction or ventricles pick up the escape beats, respectively *From a single lead basic rhythms perspective. Exceptions exist. #ecg #ecginterpretation #ecglovers #ecgreading #mbbs #mbbsstudent #medicos #medico #medical #medicalstudents #medicalknowledge #neetpg #neet #fmge #nursing #nursingstudent #doctor #cardiologists #viral #tranding
#Pr Interval Reel by @cvicuschoolhouse - The PR interval is measured from the start of the P wave (atrial depolarization) to the start of the QRS complex (ventricular depolarization). 👉 It
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@cvicuschoolhouse
The PR interval is measured from the start of the P wave (atrial depolarization) to the start of the QRS complex (ventricular depolarization). 👉 It represents the time it takes for the electrical impulse to travel from the SA node, through the atria, AV node, and into the ventricles. 📏 Normal range: 0.12–0.20 seconds (3–5 small boxes on ECG paper). ⚠️ Too short (<0.12 sec): May suggest an accessory pathway (like WPW). ⚠️ Too long (>0.20 sec): Think first-degree AV block or conduction delay. Knowing the PR interval helps you spot subtle conduction problems before they turn into major rhythm issues. #PRInterval #ECGInterpretation #CardiacRhythms #CVICUSchoolhouse #CriticalCareNurse #nurse #icunurse #newnurse
#Pr Interval Reel by @ankit.rewired (verified account) - 🫀 ECG Report Explained in 60 Seconds ⚡ Still confused by terms like HR, PR Interval, Tachycardia, Bradycardia or P-Duration in your ECG report? In
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@ankit.rewired
🫀 ECG Report Explained in 60 Seconds ⚡ Still confused by terms like HR, PR Interval, Tachycardia, Bradycardia or P-Duration in your ECG report? In this video, you’ll learn how to read an ECG report in the simplest way possible using real medical concepts explained visually 👨‍⚕️📈 ✅ Learn: • What ECG actually measures ⚡ • Normal Heart Rate (60–100 BPM) ❤️ • Tachycardia vs Bradycardia 📉📈 • PR Interval normal range (120–200 ms) ⏱️ • First Degree Heart Block 🚨 • WPW Syndrome 🫀 • P-Duration normal values (80–110 ms) 📊 🎓 Perfect for: Medical students, healthcare professionals, ECG beginners, nursing students, physiotherapy students, NEET PG aspirants, MBBS students, paramedical students, and anyone wanting to understand their heart report. 🔍 Keywords: ECG report explained, how to read ECG, ECG interpretation, ECG basics, normal ECG report, ECG parameters explained, heart rate normal range, tachycardia explained, bradycardia explained, PR interval explained, P duration ECG, WPW syndrome ECG, first degree heart block ECG, ECG tutorial, ECG for beginners, cardiology basics, ECG reading made easy, ECG report normal values, electrocardiogram explained, ECG Hindi explanation, medical education reels, healthcare educational video, ECG analysis, cardiac rhythm basics, ECG waveform explained, medical student learning, nursing ECG tutorial, paramedical ECG class, heart health education 📌 Share this with someone who always gets confused after seeing their ECG report.

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