MDS PREP
A patient has unilateral posterior crossbite due to functional shift of mandible. Indicated treatment
1) Unilateral expansion of upper arch of involved side
2) Bilateral expansion of maxillary arch
3) Unilateral expansion of arch of affected side
4) None of the above
Orthodontics
Answer: 2
Commonest complication after removal of mandibular 3rd molar
1) Lingual nerve damage
2) Dry socket
3) # mandible
4) Bleeding
Oral Surgery
Answer: 2
The resiliency of an orthodontic wire as regards to its cross-section will
1) Increase with an increase in the cross-sectional area
2) Decrease with an increase in the cross-sectional area
3) Remain in same
4) None of the above
Orthodontics
Answer: 1
Effective use of dental floss is expected to
1) Reduce caries activity
2) Restrict plaque development
3) Improve gingival health
4) Alter microbial environment
Periodontics
Answer: 3
All are true about supernumerary tooth except
1. May have resemblance to normal teeth
2. Disto molars does not resemble any other tooth
3. Mesiodens is the most common supernumerary tooth
4. More common in mandible
Oral Pathology
Answer: 4
Anion gap is not increased in
1. Diarrhea
2. Lactic acidosis
3. Ketoacidosis
4. Acute Renal Failure
Medicine
Answer: 1
Which of the following is the first drug to be prescribed in status asthmaticus?
1) Salbutamol
2) Humidified oxygen inhalation
3) Hydrocortisone hemisuccinate
4) Sodium bicarbonate infusion
Pharmacology Answer: 3
Status asthmaticus/Refractory asthma
Any patient of asthma is susceptible to develop acute severe asthma which may be life-threatening. Upper respiratory tract infection is the most common precipitant.
(i) Hydrocortisone hemisuccinate 100 mg (or equivalent dose of another glucocorticoid) i.v. stat, followed by 100-200 mg 4-8 hourly infusion; may take upto 6 hours to act.
(ii) Nebulized salbutamol (2.5-5 mg) + ipratropium bromide (0.5 mg) intermittent inhalations driven by O2 .
(iii) High flow humidified oxygen inhalation
(iv) Salbutamol/terbutaline 0.4 mg i.m./s.c. may be added since inhaled drug might not get to smaller bronchi owing to severe narrowing/plugging with secretions
(v) Intubation and mechanical ventilation if needed
(vi) intensive antibiotic therapy to be used for treating chest infection
(vii) Treat dehydration and acidosis with saline + sod. Bicarbonate/lactate infusion.