NEET 67-70

NEET Questions for MCH exams

Answers and explanations


Q67 ) DENVER CRITERIA is used in 
a. Blunt cerebrovascular trauma
b. Chest trauma
c. Blunt trauma abdomen

d) Penetrating abdominal injury


Q68)  Which score is associated with spinal cord injury—
a. Frenkel score
b. Glass glow coma score
c. Johnson score
d. APACHE


 Q 69 ) Recurrence rate in lap repair of recurrent inguinal hernias is
a. 5 % 
b. 8 % 
c. 10 % 
d. 14
 %


Q70 . Carbon monoxide poisoning true is

a. It is having 10 times more affinity than oxigen
b. 60 percent is not deadly.
c. Concentration above 10% are dangerous and need observation
d. Concentration above 10% are dangerous and need treatment with pure oxigen
for more than 24 hours


Ans

67) a

Denver criteria is for blunt cerebrovascular injury.

It gives indicators of high risk for blunt cerebrovascular injury.

Signs and symptoms:

Expanding neck hematoma

Arterial hemorrhage from neck, nose, mouth

Focal neurological deficit

Cervical bruit (pt <50 yrs)

Stroke on CT or MRI

Neurological deficit unexplained by CT findings

 

Risk factors:

Severe midface fracture, LeFort II or III

Basilar skull fracture involving carotid canal

Diffuse axonal injury and GCS </=  6

Significant cervical spine fracture or ligamentous injury

Significant soft tissue injury to anterior neck (eg seatbelt Mark)

Near hanging with anoxia

Reference: sabiston 19th edition page 446, box 18-4.


68) a

Spinal cord injury is classified according to Frankel score.

A: absent motor and sensory functions

B: sensory function present, motor absent

C: sensory present , motore present but motor score <3/5

D: sensory present, motor function useful (>/= 3/5)

E: normal function

Reference: Bailey and Love, 25th edition. Page 313


69) c

10% 

Over all recurrence rate for inguinal hernia repair  is 1.7 to 10%. Tension free repairs have the lowest rate. Prosthetic mesh repairs have a 50% to 75% lower risk of hernia recurrence, a lower risk of chronic postherniorrhaphy groin pain, and an earlier return to work than open repairs. 

The recurrence rate for the laparoscopic repair was lower compared with open non mesh repairs; however, open and laparoscopic mesh repairs had similar recurrence rates.

Primary hernia recurrence with lap 10% and open 4%. 

Recurrent hernia recurrence with lap 10% and open 14% 

Ref Sabiston 20th edition 1104


70 d

Option A: Affinity of CO for Hb is 200-250 times that of oxygen. It causes a conformational change in Hb molecule and reduces affinity of Hb for O2, shifting the oxyhemoglobin dissociation curve to the left.

Option B: Concentrations less than 10% are usually asymptomatic. Concentrations >60% are fatal. Arterial carboxyhemoglobin level must be obtained because pulse oximetry can be falsely elevated.

Option C: Concentrations above 10 per cent are dangerous and need treatment with pure oxygen for more than 24 hours. Administration of 100% O2 reduces the half-life of CO from 250 minutes in room air to 40 to 60 minutes on 100% oxygen.

 

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