NEET MDS Shorts
46894
Microbiology
80763
INI CET
The sparing of the forehead indicates an Upper Motor Neuron (UMN) lesion. This is because the upper face receives bilateral innervation from the motor cortex. A stroke typically causes UMN facial palsy (contralateral lower face only), whereas Bell's palsy is a Lower Motor Neuron (LMN) lesion affecting the entire half of the face including the forehead.
60063
Dental AnatomyIn the case of primary teeth, the roots are often resorbed as the permanent teeth develop. The facial aspect of the root tends to be the last area to undergo resorption due to its position and the way the succedaneous tooth exerts pressure. The facial root surface is generally more stable and remains attached to the gingiva longer than the other aspects, making it the longest and most securely attached during extraction.
54926
General Medicine
Although the question mentions that hypoprothrombinemia is associated with vitamin K deficiency, the most common congenital cause of hypoprothrombinemia is actually deficiency of factor II, which is vitamin K-dependent. Vitamin K deficiency can lead to impaired synthesis of factors II, VII, IX, and X in the liver.
66894
Oral PathologyThe most likely diagnosis for the patient is hyperparathyroidism, given the symptoms and lab findings.
61244
PeriodonticsChronic gingivitis is typically a painless condition
59543
Periodontics
Subgingival curettage involves removing the inflamed soft tissue lateral to the periodontal pocket wall. It is indicated in cases of oedematous gingivitis because the inflamed, soft, and retractable tissue is easier to remove and responds favorably to this procedure.
53955
PharmacologyMorphine causes vomiting by stimulation of the medullary chemo receptor trigger zone
53559
Dental Materials
The general use of type III zinc oxide-eugenol temporary cement is for immediate post-operative treatment of sensitivity and to reduce post-operative sensitivity before placing a permanent restoration.
33215
Oral Medicine
Nephrotic syndrome is associated with hyperlipidemia, particularly increased levels of LDL and cholesterol. The underlying mechanism involves the loss of albumin in the urine, which leads to hypoalbuminemia. This causes an increased synthesis of very low-density lipoproteins (VLDL) by the liver to compensate for the loss of oncotic pressure. Additionally, the loss of proteins that normally bind to cholesterol in the blood, such as lipoproteins, results in decreased clearance of LDL.