Microbiology books and videos 2022

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Microbiologia libros y videos 2022 (Spanish)

¡Bienvenidos a Usmle Microbiología! Este canal está dedicado a proporcionar a los estudiantes de medicina y profesionales de la salud una amplia selección de libros y videos de microbiología para el año 2022. Con el fin de ayudarte a profundizar tus conocimientos en esta fascinante área de estudio, nuestro equipo de administradores, encabezado por @med_pros, se esfuerza por brindarte contenido de calidad y actualizado. ¿Quiénes somos? Somos un grupo apasionado de profesionales de la salud y educadores con experiencia en microbiología, comprometidos en compartir recursos valiosos para tu formación académica. ¿Qué ofrecemos? En este canal, encontrarás una cuidadosa selección de libros y videos de microbiología que te ayudarán a prepararte para el Examen Médico de Licencia de Estados Unidos (USMLE) y otras evaluaciones importantes. Nuestro objetivo es facilitarte el acceso a material educativo de alto nivel para que puedas alcanzar tus metas académicas con éxito. ¡Únete a nosotros en Usmle Microbiología y lleva tu conocimiento a un nuevo nivel! ¡No te pierdas la oportunidad de potenciar tu aprendizaje con recursos de calidad! 📚💻

Microbiology books and videos 2022

11 Dec, 20:45

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Microbiology books and videos 2022

03 Nov, 16:32

happy learning

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Microbiology books and videos 2022

03 Nov, 16:32

❤️

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Microbiology books and videos 2022

08 May, 19:57

Neisseria meningitidis can cause sepsis and circulatory collapse in previously healthy young individuals. Lipooligosaccharide, a virulence factor in the pathogens outer membrane, is the major underlying cause of disease severity.

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Microbiology books and videos 2022

08 May, 08:55

A 16-year-old girl is brought to the emergency department after she became unresponsive. Temperature is 39.7 C (103.5 F), blood pressure is 70/40 mm Hg, and pulse is 130/min and thready. There is a diffuse petechial and ecchymotic skin rash. Laboratory testing reveals leukocytosis with left shift and evidence of disseminated intravascular coagulation and multiorgan failure. Despite aggressive interventions, the patient dies several hours after admission. Autopsy reveals hemorrhagic necrosis of many internal organs, including the bilateral adrenal glands. Which of the following microbial components is directly responsible for the severity of disease in this patient?

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Microbiology books and videos 2022

07 May, 19:11

Bacterial meningitis causes an increase in cerebrospinal fluid (CSF) neutrophil count and protein concentration as well as a decrease in CSF glucose. Streptococcus pneumoniae is a leading cause of community-acquired pneumonia, otitis media, and meningitis in adults. S pneumoniae appears on Gram stain as lancet-shaped, Gram-positive cocci in pairs.

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Microbiology books and videos 2022

07 May, 08:08

A 44-year-old man is brought to the emergency department by his wife because of confusion that began a few hours ago. Earlier in the day, he complained of a severe headache and nausea. On physical examination, his temperature is 38.3 C (101 F) and nuchal rigidity is present. Lumbar puncture and cerebrospinal fluid (CSF) examination show:Opening pressure300 mm H2OGlucose20 mg/dLProtein200 mg/dLRBCs4 cells/µLLeukocytes760 cells/µL Neutrophils90% Lymphocytes10%Gram stain of the CSF would most likely reveal which of the following?

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Microbiology books and videos 2022

06 May, 20:51

Acute rheumatic fever is a complication of untreated group A streptococcal pharyngitis. Rheumatic heart disease is the most common cause of acquired valvular heart disease and cardiovascular death in developing countries. The incidence of acute rheumatic fever and rheumatic heart disease has been reduced in industrialized nations with prompt treatment of streptococcal pharyngitis with penicillin.

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Microbiology books and videos 2022

06 May, 08:49

The public health department of a developing country performs an epidemiologic study to assess the nationwide incidence of upper respiratory infections among children. The data show a high rate of childhood bacterial pharyngitis. Current practice guidelines indicate that a rapid test should be performed in children to identify the presence of bacterial antigens. If this test is negative, a throat culture, the gold standard for definitive diagnosis, is then performed. To offset cost and avoid losing patients to follow-up, the department is considering recommending the empiric use of penicillin for the treatment of suspected bacterial pharyngitis. Which of the following would be expected to decrease after long-term implementation of this guideline?

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Microbiology books and videos 2022

05 May, 20:58

The major virulence factor of Streptococcus pyogenes is M protein, an alpha-helical coiled-coil protein that shares structural homology with tropomyosin and myosin. It extends from the cell wall and prevents phagocytosis, inhibits complement binding, and mediates bacterial adherence. Antibodies against M protein form shortly after acute infection and may cross-react with epitopes on myosin, leading to rheumatic carditis.

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Microbiology books and videos 2022

05 May, 08:46

A microbiologist is studying the structure and function of bacterial cell walls. In an experiment, group A streptococci are treated with chemicals to solubilize the cell wall. Various cell wall–associated proteins are subsequently extracted. Electron microscopic evaluation of a specific protein shows structural homology with mammalian tropomyosin and myosin. This protein acts as a virulence factor for certain species of the organism. Which of the following is the most likely function of this bacterial cell wall–associated protein?

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Microbiology books and videos 2022

04 May, 20:46

Staphylococcal scalded skin syndrome occurs in infants and children due to the production of exfoliative exotoxins by Staphylococcus aureus. The toxins cleave desmoglein in desmosomes, leading to widespread epidermal blistering and shedding, especially with gentle pressure (ie, Nikolsky sign). Mucous membranes are spared.

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Microbiology books and videos 2022

04 May, 18:34

A 6-month-old boy is brought to the emergency department due to poor feeding, irritability, and rash. He was well-appearing until 2 days ago, when he developed little interest in drinking and a progressive rash. Physical examination reveals diffuse erythema and desquamation that is most prominent at the neck, axillae, inguinal folds, and perioral region. The perioral area also has crusting and the lips are dry and cracked, but the mucosal membranes are normal. The epidermis easily comes off with gentle pressure at the erythematous areas. Which of the following is the most likely cause of this patient's symptoms?

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Microbiology books and videos 2022

02 May, 10:53

The clinical presentation of tertiary syphilis includes cardiovascular involvement and gummas. Gummas are necrotizing granulomas occurring on the skin, mucosa, subcutaneous tissue, and bones and within other organs. Neurosyphilis can occur at any stage of infection.

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Microbiology books and videos 2022

02 May, 00:41

A 35-year-old woman comes to the office due to a vulvar lesion. She has also experienced occasional headaches and memory loss recently. The patient has had unprotected sexual intercourse with multiple partners. Cardiovascular examination is notable for a diastolic murmur with a prominent second heart sound. There is a painless indurated nodule on her vulva. Cervical cultures are negative for gonorrhea, but a serum Venereal Disease Research Laboratory (VDRL) test is positive. Chest x-ray reveals calcifications at the level of the ascending aortic arch. Blood cultures are negative. Lumbar puncture shows mild pleocytosis and a positive VDRL result. HIV testing is negative. Which of the following best describes this patient's vulvar lesion?

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Microbiology books and videos 2022

30 Apr, 17:15

Staphylococcal food poisoning is mediated by the ingestion of a preformed, heat-stable enterotoxin that induces rapid-onset (<6 hours) nausea and vomiting. Most cases arise due to improper food handling and storage. Common culprit foods include eggs, dairy products, and mayonnaise-based salads.

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