EBK MICROBIOLOGY:W/DISEASES BY BODY...-
5th Edition
ISBN: 9780134608242
Author: BAUMAN
Publisher: PEARSON
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Chapter 4, Problem 1EDCS
Necrotizing Fasciitis
Fever, chills, nausea, weakness, and general yuckiness. Carlos thought he was getting the flu. Further, he had pulled a cactus thorn from his arm the day before, and the tiny wound had swollen to a centimeter in diameter. It was red, extremely hot, and much more painful than such a puncture had a right to be. Everything was against him. He couldn’t afford to miss days at work, but he had no choice.
He shivered in bed with fever for the next two days and suffered more pain than he had ever experienced, certainly more than the time he broke his leg. Even more than passing a kidney stone. The red, purple, and black inflammation on his arm had grown to the size of a baseball. It was hard to the touch and excruciatingly painful. He decided it was time to call his brother to take him to the doctor. That decision saved his life.
Carlos’s blood pressure dropped severely, and he was unconscious by the time they arrived. The physician immediately admitted Carlos to the hospital, where the medical team raced to treat necrotizing fasciitis, commonly called “flesh-eating” disease. This reemerging disease is caused by group A Streptococcus, a serotype of Gram-positive bacteria also known as Streptococcus pyogenes. Group A strep invades through a break in the skin and travels along the fascia-the protective covering of muscles-producing toxins that destroy human tissues, affecting about 750 people each year in the United States.
By cutting away all the infected tissue; using high-pressure, pure oxygen to inhibit bacterial growth; and applying antimicrobial drugs to kill the bacterium, the doctors stabilized Carlos. After months of skin grafts and rehabilitation, he returned to work, grateful to be alive. (For more about necrotizing fasciitis, see pp.560-561.)
1. What color do cells of S. pyogenes appear after the
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Why does necrotizing fasciitis require immediate surgery?
A 56-year-old man complained of progressive fatigue and malaise. His physical examination was generally satisfactory, with a pulse of 90 beats per minute, and multiple lymphadenopathy and hepatomegaly. No bacteria were found in cerebrospinal fluid smears of lumbar puncture, but a flagellum, elongated nucleus with blue and red cytoplasm were found in the blood by Giemsa staining of thin blood smears. The family reported that the patient had been engaged in transportation business in Africa for many years.
1. What do you think is the most likely disease for this patient?
Malaria
Dengue fever
African sleeping disease
Toxoplasma encephalitis
Bacterial meningitis
2. What do you think is the most likely pathogen for this patient?
Plasmodium vivax
Toxoplasma gondii
Plasmodium falciparum
Plasmodium malariae
Trypanosoma brucei gambiense
3. What do you think is the most direct basis for the diagnosis of the pathogen?
From Africa
Fatigue
Hepatomegaly
Special structure was found on blood…
rash in this patient and 1) what is the name given to
this type of rash? 2)Describe the red blood cell morphology in
the blood film. 3) Describe the white blood cell morphology in
the blood film. 4) What is the name given to this the type of
anaemia present in this case? 5) Taking into consideration the
clinical presentation, the full blood count results and
the red blood cell morphology, what is your provisional
diagnosis for this case? give right accurate answer only
د
A 3-year-old male presents to ED with bloody diarrhoea and a
rash.
Full blood count results and blood film
Parameter
Result
Reference range
Haemoglobin
92 g/L
110-140 g/L
Red blood cell count
3.58 x 102/L
3.86-5.00 x 102/L
Haematocrit
0.28
0.31-0.38
Mean cell volume
78.5 fL
73-85 fl
Mean cell haemoglobin
25.7 pg
25-30 pg
MCHC
327 g/L
310-360 g/L
Reticulocyte count
150 x 10%/L
20-80 x 10%/L
White blood cell count
18.6 x 10%/L
4.9-12.8 x 10%/L
Platelet count
27 x 10%/L
215-450 x 10%/L
00
Blood film
De
Chapter 4 Solutions
EBK MICROBIOLOGY:W/DISEASES BY BODY...-
Ch. 4 - Prob. 1TMWCh. 4 - Why is a Gram-negative bacterium colorless but a...Ch. 4 - Why didnt Linnaeus create taxonomic groups for...Ch. 4 - Necrotizing Fasciitis Fever, chills, nausea,...Ch. 4 - Why is magnification high and color absent in an...Ch. 4 - Prob. 1MCCh. 4 - Prob. 2MCCh. 4 - Prob. 3MCCh. 4 - Curved glass lenses _________ light. a. refract b....Ch. 4 - Prob. 5MC
Ch. 4 - Prob. 6MCCh. 4 - Prob. 7MCCh. 4 - Prob. 8MCCh. 4 - Prob. 9MCCh. 4 - In the binomial system at nomenclature, which term...Ch. 4 - Prob. 1FIBCh. 4 - Prob. 2FIBCh. 4 - Prob. 3FIBCh. 4 - Fill in the Blanks 4. ___________ refers to...Ch. 4 - Fill in the Blanks 5. Cationic chromophores such...Ch. 4 - Prob. 1VICh. 4 - Label the microscope.Ch. 4 - Prob. 1SACh. 4 - Critique the following definition of magnification...Ch. 4 - Prob. 3SACh. 4 - Put the following substances in the order they are...Ch. 4 - Prob. 5SACh. 4 - Prob. 6SACh. 4 - Prob. 7SACh. 4 - Prob. 8SACh. 4 - Miki came home from microbiology lab with green...Ch. 4 - Why is the definition of species as successfully...Ch. 4 - With the exception of the discovery of new...Ch. 4 - Prob. 4CTCh. 4 - Prob. 5CTCh. 4 - In what ways are the Gram stain and the acid-fast...Ch. 4 - Microbiologists have announced the discovery of...Ch. 4 - Why is the genus name Coccus placed within...Ch. 4 - A clinician obtains a specimen of urine from a...Ch. 4 - Using the following terms, fill in the following...
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