CLINICAL MONITORING OF ANESTHESIA
| A | Depolarizing block | |
| B |
Non depolarizing block |
|
| C |
Both depolarizing and non-depolarizing block |
|
| D |
Malignant hyperthermia |
Train of four fade is a characteristic feature of:
| A |
Depolarizing block |
|
| B |
Non depolarizing block |
|
| C |
Both depolarizing and non-depolarizing block |
|
| D |
Malignant hyperthermia |
Train of four fade is a characteristic of a non-depolarizing block.
The Train-of-four stimulation denotes the administration of four successive 200-ps stimuli in 2 seconds (2 Hz) and
a series of patterns are produced and these patterns differ in a depolarizing block differs from that of a non-depolarizing block.
In a non-depolarizing block there is progressive depression of height with each twitch (fade) and in a depolarizing block there is equal depression of all four twitches (No fade).
Ref: Clinical Anesthesiology By G. Edward Morgan, 4th Edition, Pages 152, 209
All of the following statements about neuromuscular blockage produced by succinylcholine are true, except:
| A |
No fade on Train of four stimulation |
|
| B |
Fade on tetanic stimulation |
|
| C |
No post tetanic facilitation |
|
| D |
Train of four ratio > 0.4 |
Succinylcholine is a depolarizing neuromuscular blocker.
With succinylcholine no fading is observed after train of four or tetanic stimulation.
All four stimulatory responses after TOF stimulation are suppressed to the same extent.
For non depolarization block which of the following statement is correct
| A |
Post tetanic potentiation is seen |
|
| B |
Tetanic fade is absent |
|
| C |
Train of four is absent |
|
| D |
Anticholinergic drugs potentiation of block |
A i.e. Post titanic potentiation is seen
