33451

A positive oxidase test for Neisseria colonies results in a deep purple coloration.

57902

The drug of choice in Pneumocystis carinii pneumonia is Catrimoxazole

51200

Corticosteroids are the drug of choice in facial nerve palsy (Bells palsy), especially when initiated within 72 hours of onset. Corticosteroids reduce inflammation and edema of the facial nerve within the narrow facial canal, improving recovery outcomes. Vitamin A and anti-inflammatory drugs are not first-line treatments for facial nerve palsy.

54260

The primary cells that characterize eosinophilic granuloma are histiocytes.

33412

• Periodontal probe:

  • A calibrated instrument marked in millimeters.

  • Used like a miniature ruler to measure intraoral structures such as sulcus depth, attachment levels, and distances.

  • Alone, it can measure vertical dimensions but may not give the most accurate functional height of the floor of the mouth.

• Special tray:

  • Custom-made tray used in prosthodontics for impression making.

  • Helps record functional anatomy, including the floor of the mouth.

  • Alone, it provides a functional impression but lacks precise millimeter calibration.

• Combination (periodontal probe + special tray):

  • The probe provides precise millimeter measurement.

  • The tray ensures functional accuracy by recording the mouth floor in relation to denture-bearing areas.

  • Together, they give the most accurate measurement of the floor of the mouth height, which is crucial in complete denture fabrication.

50957

Necrosis causes gingival recession, so attachment loss occurs without pocket formation.

90616

Testicular torsion is the most likely diagnosis for sudden onset of severe pain and swelling in the testicle.

82700

Anemia is a condition characterized by a decrease in the number of red blood cells or a reduction in their oxygen-carrying capacity. Vitamin B12 and folic acid are essential for the production of red blood cells. Deficiencies in these vitamins can lead to megaloblastic anemia, where the bone marrow produces abnormally large and immature red blood cells.

27133

Chlorthalidone (Thiazide like diuretic)

67305

Lead poisoning causes microcytic, hypocromic anemia by interfering with heme synthesis and globin synthesis, and by increasing red blood cell destruction. The primary mechanism is the inhibition of several key enzymes in the heme biosynthesis pathway, notably \(\delta \)-aminolevulinic acid dehydratase (ALAD) and ferrochelatase. The inhibition of these enzymes leads to the accumulation of heme precursors and a decrease in the amount of heme available for incorporation into hemoglobin, resulting in anemia.