Хелпикс

Главная

Контакты

Случайная статья





Fig. 23.3. Cardiac arrhythmias electrocardiogram patterns



Fig. 23.3. Cardiac arrhythmias electrocardiogram patterns

Denominations:

A. atrial flutter

B. atrial bigeminy

C. atrial premature beat

D. WPW syndrome

E. ventricular bigeminy

F. ventricular fibrillation

Descriptions:

a. short PR interval, less than 3 small squares (120 ms), slurred upstroke to the QRS indicating pre-excitation (delta wave), broad QRS, secondary ST and T wave changes

b. bizarre, irregular, random waveform; no clearly identifiable QRS complexes or P waves, wandering baseline

c. each beat is followed by an atrial premature beat

d. a characteristic “sawtooth” or “picket-fence” waveform of an intra-atrial re-entry circuit usually at about 300 bpm.

e. a ventricular premature beat follows each normal beat

f. an abnormal P wave; P waves are small and rather shapeless, followed by a compensatory pause - but not a full compensatory pause

 

Matching!

Which kinds of the heart blocks are represented in Fig. 23.4? Match the numbered electrocardiogram patterns with their lettered denominations.

 

7.     10.
8.       11.
9.          

Fig. 23.4. Heart blocks

 

A. first-degree atrioventricular heart block

B. second -degree atrioventricular heart block (Wenckebach phenomenon).

C. second -degree atrioventricular heart block (2:1 heart block)

D. complete atrioventricular heart block

E. left bundle branch block

 



  

© helpiks.su При использовании или копировании материалов прямая ссылка на сайт обязательна.