Heparin is the additive of choice for blood gas syringe collection as it has the least amount of interference with the blood gas analytes measured.
Which of the following additives should be used for the collection of a sample for blood gas analysis:
HbsAg is positive in acute and chronic Hepatitis B infections, since the antigen is found on the actual surface of the virus. HbeAg is present in the blood when the hepatitis B viruses are replicating, indicating an active infection. Anti-Hbc IgM is present due to the immune response to the presence of the hepatitis core antigen and indicates an acute infection. Anti-HBs is generally interpreted as indicating recovery and immunity from hepatitis B virus infection, according to the CDC.
Given the following results, what is the immune status of the patient?
HbsAg: positive
HbeAg: positive
Anti-HBc IgM: positive
Anti-HBs: negative
The combination of complement C4, C2 and C3 that binds to the antigen-antibody complex in the initial reaction step in the classical pathway of complement activation is called the activation unit.
Which of the following is the "activation unit" in the classical complement pathway?
Which of the following disorders is characterized by increased production of chloride in sweat?
Multiple myeloma
P. vivax characteristically displays Schuffner's dots and often enlarged RBCs along with brownish granules. P.
vivax can also have 12-24 merozoies in each cell, actually filling the entire RBC. This parasite also has very irreglar shapes often referred to as "Ameboid".
P. falciparum and P. malariae do not display Shuffner's dots, therefore could not be the correct choice.
P. ovale does display Shuffner's dots in all stages, but characteristically has about 8-12 merozoites in rosettes or irregular clusters inside the RBC. Also, P. ovale characteristically shows enlarged, ovoid RBCs with fimbriated edges.
Identify the parasite of a patient with suspected malaria who demonstrates the following findings on a blood smear:
- Enlarged RBCs, some with fine brownish granules
- > 15 parasites in some cells
- Ameboid structures
- Schuffner's dots
