Large doses of uterotonic drugs caused type II second degree sinoatrial block during cesarean section

2016 ◽  
Vol 54 (01) ◽  
pp. 62-64 ◽  
Author(s):  
Zhe-Feng Quan ◽  
Ming Tian ◽  
Ping Chi
Keyword(s):  
Cesarean Section ◽  
Type Ii ◽  
Sinoatrial Block ◽  
Second Degree

Atrioventricular conduction abnormalities and atrioventricular blocks: ECG patterns and diagnosis

2018 ◽  
Author(s):  
S. Serge Barold
Keyword(s):  
P Wave ◽  
Conduction Time ◽  
Type I ◽  
Type Ii ◽  
Av Block ◽  
Ventricular Extrasystoles ◽  
Av Conduction ◽  
Pr Interval ◽  
Before And After ◽  
Second Degree

The diagnosis of first-degree and third-degree atrioventricular (AV) block is straightforward but that of second-degree AV block is more involved. Type I block and type II second-degree AV block are electrocardiographic patterns that refer to the behaviour of the PR intervals (in sinus rhythm) in sequences (with at least two consecutive conducted PR intervals) where a single P wave fails to conduct to the ventricles. Type I second-degree AV block describes visible, differing, and generally decremental AV conduction. Type II second-degree AV block describes what appears to be an all-or-none conduction without visible changes in the AV conduction time before and after the blocked impulse. The diagnosis of type II block requires a stable sinus rate, an important criterion because a vagal surge (generally benign) can cause simultaneous sinus slowing and AV nodal block, which can resemble type II block. The diagnosis of type II block cannot be established if the first post-block P wave is followed by a shortened PR interval or by an undiscernible P wave. A narrow QRS type I block is almost always AV nodal, whereas a type I block with bundle branch block barring acute myocardial infarction is infranodal in 60–70% of cases. All correctly defined type II blocks are infranodal. A 2:1 AV block cannot be classified in terms of type I or type II block, but it can be AV nodal or infranodal. Concealed His bundle or ventricular extrasystoles may mimic both type I or type II block (pseudo-AV block), or both

scholarly journals Ticagrelor Associated Heart Block: The Need for Close and Continued Monitoring

2017 ◽  
Vol 2017 ◽  
pp. 1-4 ◽  
Author(s):  
Munish Sharma ◽  
Daniel A. N. Mascarenhas
Keyword(s):  
Acute Coronary Syndrome ◽  
Heart Block ◽  
Antiplatelet Agent ◽  
Type Ii ◽  
Cardiac Events ◽  
Coronary Syndrome ◽  
Adverse Cardiac Events ◽  
Second Degree ◽  
Degree Type

Ticagrelor is an antiplatelet agent prescribed to prevent the development of adverse cardiac events after acute coronary syndrome (ACS). According to the PLATO trial, ticagrelor is associated with ventricular pauses in the first week of treatment; however, these episodes were felt to be asymptomatic and nonfatal to the patient. We present a case of ticagrelor related second-degree type II heart block causing severe dizziness and diaphoresis that resolved after discontinuation of the medication.

scholarly journals A Rare Case of Second Degree Mobitz Type II AV Block Associated with Cocaine Use

2018 ◽  
Vol 6 (7) ◽  
pp. 146-148 ◽  
Author(s):  
Pramod Theetha Kariyanna ◽  
Apoorva Jayarangaiah ◽  
Mohammed Al-Sadawi ◽  
Rodaina Ahmed ◽  
Jason Green ◽  
...  
Keyword(s):  
Rare Case ◽  
Type Ii ◽  
Av Block ◽  
Cocaine Use ◽  
Mobitz Type ◽  
Second Degree

Mobitz Type II Second-Degree Atrioventricular Block with Narrow QRS and Junctional Extrasystoles: What is the Mechanism?

2013 ◽  
Vol 25 (4) ◽  
pp. 447-449 ◽  
Author(s):  
JAVIER JIMÉNEZ-DÍAZ ◽  
JUAN J. GONZÁLEZ-FERRER ◽  
GIOVANNA U. HEREDIA ◽  
JAVIER MORENO-PLANAS
Keyword(s):  
Atrioventricular Block ◽  
Type Ii ◽  
Narrow Qrs ◽  
Mobitz Type ◽  
Second Degree
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