‎AY > AB>Aa>B>C‏ > قفن
‎Ab > Ay >AB> Aa‏ < 8 0:02
‎Correct Answer:- ೦೧000‏

‎QuestionS5:-Regarding action of Local Anaesthetic (LA) on NA+ channels, which of the following is true 7
‘Ache affinity of LA for the inactivated state of the Na+ channel is higher than its resting state
B:-At low frequencies of impulse firing, a phase- or use-dependent block is seen
பரக cationic form of LA acts on the Na+ channel from outside the axon
D-The unionised form acts from within the axon to inactivate the Na+ channel

‎Correct Answer: Option:

‎Question56:-A 24 year old female with a history of mild asthma was admitted to the intensive care unit with Guillian Barre syndrome. She is complaining of difficulty in breathing.
Which is the best way to monitor her respiratory function and if she needed intubation ?

‎‘Ac Pulse oximetry
B:-Patients self report of symptoms
೦೩8೦

‎D-Measurement of vital capacity

‎Correct Answer: Option-D

‎‘Question57:-A patient with life threatening exacerbation of asthma requires emergency intubation and mechanical ventilation. Which of the following agents is the most likely to
improve lung mechanics and bronchospasm 7

‎AcAtracurium
‎B:-Ketamine
‎Propofol
‎D-Fentanyl
‎Correct Answer: Option ®
QuestionS8::Which of the following complications is most frequently seen after pulmonary artery catheter insertion via the internal jugular vein 7
‘Carotid artery puncture
B:-An arthythmia requiring treatment
C=Bacterial colonisation
Pulmonary artery rupture

‎Correct Answer: Option-C

‎‘Question59:-Significant intravenous absorption/inadvertent intravenous injection of bupivacaine can cause profound bradycardia and sinus node arrest. Which of the following best
describes the mechanism of cardiac toxicity of bupivacaine 7

‎‘A: Bupivacaine binds inactivated fast sodium channels and dissociates from them slowly
B:-Bupivacaine binds activated fast sodium channels and dissociates from them slowly
C=Bupivacaine binds inactivated slow sodium channels and dissociates from them slowly
D-Bupivacaine binds activated slow sodium channels and dissociates from them slowly
Correct Answer:- ೦೧000
Question60::Which of the following surgeries carries the highest cardiovascular risk ?
‘AsEmergency appendectomy
B:-Carotid endarterectomy
ಆ popliteal bypass surgery
ட்ப repair
Correct Answer: Option-C
Question61:-Surgical electrocautery may cause a problem with an Automated Implantable Cardioverter Defibrillator (AICD) by all the following mechanisms, except
[A-AICD interpreting a cautery current as ventricular fibrillation
B:-Inhibition of pacemaker function due to cautery artifact
ட்ட pacing rate due to activation of a rate-responsive sensor
D-Cautery current generating too much heat at the location of AICD and causing burns
Correct Answer:- Option-D
Question62::Which of the following statements regarding the structure of Local Anaesthetic (LA) is false ?
‘AcThey consist of a hydrophobic aromatic ring and a hydrophilic tertiary amine group held by a hydrocarbon chain

‎of them exist as ३ weak acid-base pair in solution except benzocaine‏ الف ھ