Interventricular conduction delay https://www.ecgguru.com/taxonomy/term/711/all en Second-degree AV Block with Left Bundle Branch Block & Lead Reversal https://www.ecgguru.com/blog/second-degree-av-block-left-bundle-branch-block-lead-reversal <div class="field field-name-field-blog-image field-type-image field-label-hidden"><div class="field-items"><div class="field-item even"><a href="/blog/second-degree-av-block-left-bundle-branch-block-lead-reversal"><img typeof="foaf:Image" src="https://www.ecgguru.com/sites/default/files/unnamed.jpg" width="3028" height="1899" alt="" /></a></div><div class="field-item odd"><a href="/blog/second-degree-av-block-left-bundle-branch-block-lead-reversal"><img typeof="foaf:Image" src="https://www.ecgguru.com/sites/default/files/Arm%20leads%20corrected.jpg" width="1800" height="1150" alt="" /></a></div></div></div><div class="field field-name-body field-type-text-with-summary field-label-hidden"><div class="field-items"><div class="field-item even" property="content:encoded"><p>This ECG shows second-degree AV block, Mobitz Type II and an interventricular conduction delay, probably left bundle branch block. The QRS width is about 130 ms, or .13 seconds.</p></div></div></div> Sat, 27 May 2023 07:46:27 +0000 Dr A Röschl 843 at https://www.ecgguru.com Wide QRS Complex With First-degree AV Block https://www.ecgguru.com/ecg/wide-qrs-complex-first-degree-av-block <div class="field field-name-field-ecg field-type-image field-label-hidden"><div class="field-items"><div class="field-item even"><a href="/ecg/wide-qrs-complex-first-degree-av-block"><img typeof="foaf:Image" src="https://www.ecgguru.com/sites/default/files/IVCD_0.jpg" width="1800" height="983" alt="" /></a></div></div></div><div class="field field-name-field-ecg-interpretation field-type-text-long field-label-hidden"><div class="field-items"><div class="field-item even"><p class="MsoNormal"><strong style="mso-bidi-font-weight: normal;"><span style="color: #00b050;">The Patient:<span style="mso-spacerun: yes;">  </span></span></strong>This ECG was taken from a 73-year-old man with a history of heart failure with preserved ejection fraction, severe left ventricular hypertrophy, Type II diabetes, and stage 4 chronic kidney disease.<span style="mso-spacerun: yes;">  </span>He also suffered deep vein thrombosis and is on anticoagulation.<span style="mso-spacerun: yes;">  </span>He has a recent diagnosis of IgA myeloma.<span style="mso-spacerun: yes;">  </span>He presented with a complaint of nausea and vomiting and was found to have a worsening of acute kidney infection.<span style="mso-spacerun: yes;">  </span>There was suspicion of renal and cardiac amyloidosis, but the patient refused biopsy to confirm this.<span style="mso-spacerun: yes;">  </span>He was started on chemotherapy for multiple myeloma and will be followed as an outpatient.</p><p class="MsoNormal"><strong style="mso-bidi-font-weight: normal;"><span style="color: #00b050;">The ECG:</span></strong><span style="color: #00b050;"><span style="mso-spacerun: yes;">  </span></span>The rhythm is <strong style="mso-bidi-font-weight: normal;">sinus</strong> at around 60 bpm, although the rate varies a little at the beginning of the strip.<span style="mso-spacerun: yes;">  </span>The QRS complex is wide at .12 seconds, or 120 ms., representing <strong style="mso-bidi-font-weight: normal;">interventricular conduction</strong> <strong style="mso-bidi-font-weight: normal;">delay (IVCD)</strong>.<span style="mso-spacerun: yes;">  </span>The PR interval is .32 seconds, or 320 ms. This constitutes <strong style="mso-bidi-font-weight: normal;">first-degree AV block.<span style="mso-spacerun: yes;">  </span></strong>There is left axis deviation in the frontal plane and poor R wave progression in the horizontal plane.</p></div></div></div> Fri, 07 Jun 2019 20:48:29 +0000 Dawn 769 at https://www.ecgguru.com