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!



Episoder(1145)

Podcast # 464: Narcan't?

Podcast # 464: Narcan't?

Author: Aaron Lessen, MD Educational Pearls: A problem of take-home-naloxone is the administration of it by an able-bodied bystander Australian study looked at consecutive opioid overdose deaths in a...

2 Mai 20192min

Podcast # 463: Buproprion Overdose

Podcast # 463: Buproprion Overdose

Author: Erik Verzemnieks, MD Educational Pearls: Buproprion is used as an antidepressant and for smoking cessation Severe buproprion overdoses can cause seizures and lead to cardiac dysrhythmias Benz...

30 Apr 20191min

Podcast # 462: Death after OD

Podcast # 462: Death after OD

Author: Don Stader, MD Educational Pearls: 10% of patients seen in the emergency department for opioid overdose patients will die within a year Half of these overdoses will occur in the next month Th...

27 Apr 20192min

Podcast # 461: Breath Stacking

Podcast # 461: Breath Stacking

Author: Gretchen Hinson, MD Educational Pearls: Breath stacking occurs when a patient is unable to expire fully before another inspiration In intubated/ventilated patients, this is because adequate t...

24 Apr 20195min

Podcast # 460: Hunting for PE in Syncope

Podcast # 460: Hunting for PE in Syncope

Author: Michael Hunt, MD Educational Pearls: Most causes of syncope are benign Pulmonary embolism can result in syncope and is life threatening A recent study of Canadian and US ED patients with s...

22 Apr 20192min

Podcast # 459 Clonidine Ingestion

Podcast # 459 Clonidine Ingestion

Author: Julian Orenstein, MD Educational Pearls: Severe clonidine ingestion can present as a fluctuating mental status between typically accompanied by changes in vital signs (hypotension/bradycar...

20 Apr 20193min

Podcast # 458: A Tylenol a Day Keeps the Delirium Away?

Podcast # 458: A Tylenol a Day Keeps the Delirium Away?

Author: Nick Hatch, MD Educational Pearls: A recent study investigated the effect of scheduled IV acetaminophen on the incidence of delirium in post-CABG patients in the ICU The use of scheduled IV...

17 Apr 20193min

Podcast # 457: Stroke Scores

Podcast # 457: Stroke Scores

Author: Jared Scott, MD Educational Pearls: Modified Rankin Score: measure of disability often used to qualify outcomes following stroke = no disability, 6=dead, 0-1 indicate good outcome) 0-6 S...

15 Apr 20194min

Populært innen Vitenskap

fastlegen
tingenes-tilstand
rekommandert
jss
rss-rekommandert
rss-nysgjerrige-norge
villmarksliv
forskningno
sinnsyn
rss-paradigmepodden
fjellsportpodden
vett-og-vitenskap-med-gaute-einevoll
nordnorsk-historie
smart-forklart
rss-overskuddsliv
diagnose
abid-nadia-skyld-og-skam
abels-tarn
tomprat-med-gunnar-tjomlid
aldring-og-helse-podden