Podcast 694: Complete Heart Block

Podcast 694: Complete Heart Block

Contributor: Nick Hatch, MD

Educational Pearls:

  • Complete heart block or 3rd degree atrioventricular (AV) block is diagnosed via EKG and occurs when electrical signals from the sinoatrial (SA) node are blocked from reaching the ventricles via the AV node and AV bundles
  • P waves and QRS complexes are independent
  • Often QRS rate is around 40
  • The rate is slow because the ventricular purkinje fibers have an intrinsic rate of 20-40 bpm, whereas the SA node has an intrinsic rate of 60-100 bpm
  • Treatment is usually with pacemaker, unless there is an identifiable etiology causing the heart block that can be reversed

References

Knabben V, Chhabra L, Slane M. Third-Degree Atrioventricular Block. [Updated 2020 Aug 8]. In: StatPearls [Internet]. Treasure Island (FL): StatPearls Publishing; 2021 Jan-. Available from: https://www.ncbi.nlm.nih.gov/books/NBK545199/

The Emergency Medical Minute is excited to announce that we are now offering AMA PRA Category 1 credits™ via online course modules. To access these and for more information, visit our website at www.emergencymedicalminute.org/cme-courses/ and create an account.

Donate to EMM today!



Jaksot(1145)

UNTAMED PART 1: The Physiology of Experiencing Nature

UNTAMED PART 1: The Physiology of Experiencing Nature

11 Maalis 201917min

Podcast #445: Hunting for the endotracheal tube

Podcast #445: Hunting for the endotracheal tube

Author: Michael Hunt, MD Educational Pearls: Bedside transtracheal ultrasound to confirm proper endotracheal intubation is simple and effective Review of 17 studies showed transtracheal ultrasound wa...

8 Maalis 20192min

Podcast #444: Dyspnea in the intubated patient

Podcast #444: Dyspnea in the intubated patient

Author: Aaron Lessen, MD Educational Pearls: Dyspnea can occur in up to 50% of intubated patients Dyspnea is associated with prolonged mechanical intubation Often goes undiagnosed as these patients h...

6 Maalis 20192min

Podcast #443: Measles - a timely revisit

Podcast #443: Measles - a timely revisit

Author: Sue Chilton, MD Educational Pearls: Measles is highly contagious Typically patients just look sick Remember 4 & 4, 14, and 4-C's: Contagious 4 days before and after onset of rash 14 days fo...

4 Maalis 20193min

Podcast #442: When a severe man cold isn't

Podcast #442: When a severe man cold isn't

Author: Jared Scott, MD Educational Pearls: CXR is 40-90% sensitive for detecting pneumonia when compared to CT Patients with a high degree of suspicion for pneumonia may still warrant treatment de...

2 Maalis 20194min

Podcast #441: Is Heparin Worthless for ACS?

Podcast #441: Is Heparin Worthless for ACS?

Author: Don Stader, MD Educational Pearls: Recent study demonstrated patients with non-STEMI treated with heparin had no difference in survival, but had an increased risk of major bleeding Heparin ...

27 Helmi 20193min

Podcast # 440 : Carbon Monoxide Poisoning

Podcast # 440 : Carbon Monoxide Poisoning

Author: Katie Sprinkle, MD Educational Pearl: Carbon monoxide (CO) is the leading cause of death from poison world-wide CO forms from the combustion of any carbon based product Patients often prese...

25 Helmi 20194min

Podcast # 439 : Oops I did it again

Podcast # 439 : Oops I did it again

Author: Aaron Lessen, MD Educational Pearl: A double ingestion of a single pill is typically a benign event but several drug classes may cause problems A published review of 10 years of single medica...

22 Helmi 20192min

Suosittua kategoriassa Tiede

tiedekulma-podcast
rss-mita-tulisi-tietaa
rss-poliisin-mieli
rss-duodecim-lehti
docemilia
filocast-filosofian-perusteet
rss-ammamafia
rss-luontopodi-samuel-glassar-tutkii-luonnon-ihmeita
rss-sosiopodi
utelias-mieli
radio-antro
rss-astetta-parempi-elama-podcast
rss-tiedetta-vai-tarinaa