This is an ECG from a patient who came with a complaint of palpitation: Analyze the ECG: Rhythm: Regular Heart rate: Around 170/min QRS: Around 0.08 s i.e. ≤0.1 s (narrow QRS complex) ECG diagnosis: Regular Supraventricular Tachycardia (SVT) Now, look for P waves – There… Read More
Several cultures and religions round the globe carry a belief that the humans are capable of being possessed or inhabited by spirits and even the goddess. The ministry of different religions have formulated a set of procedures called exorcism for casting or expelling out the… Read More
Antigenic Drift Nature of antigenic variation: Minor Mechanism: Gradual accumulation of amino acid substitutions due to point mutation in the hemagglutinin (H) and neuraminidase (N) genes. As mutations accumulate, antibodies generated by exposure to previous strains do not neutralize current strains to the same extent,… Read More
Definition of Cold Agglutinin Cold agglutinins are polyclonal IgM that have specificity against the I-antigen on red cells, and often there is light chain restriction, with kappa being predominant. The infections associated with cold agglutinins are: Mycoplasma pneumoniae Epstein Barr virus Cytomegalovirus HIV Rubella Steps… Read More
Rickettsia is a gram negative obligate intracellular parasite. As shown in the table above, human is only an incidental host except in louse-borne epidemic typhus. Disease Agent Vectors Typhus group Epidemic typhus or Brill Zinsser disease R. prowazekii Louse Murine/Endemic typhus R.typhi (R.mooseri) Flea Spotted… Read More
