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- Gram-negative rods are common causes of urinary tract infections. True False"A 74 year old female patient has a positive urine culture. The urine culture is now growing about 20,000 colonies of Klebsiella pneumoniae. How would you classify this patient?" contaminated sample possible infection significant bacteriuria bladder infectionA urine sample with more than 100,000 organisms is considered indicative of infection. A urine sample containing 500 bacteria with a generation time of 20 minutes sits for 6 hours before finally being assayed. How many bacteria will then be present within the sample?
- Gram negative resistance to vancomycin is _________________ resistance, whereas gram positive resistance to vancomycin would be _________________ resistance.A 14-year-old girl suffered from abdominal pain, nausea, bloody diarrhea, and fever. Stool specimens are collected and sent to the laboratory for bacteriologic and parasitologic examination. Bacterial cultures are negative for intestinal pathogens. The laboratory report reveals organisms with red blood cells inside them. The most likely causal agent is * Toxoplasma gondii Shigella dysenteriae Cryptosporidium parvum Giardia lamblia Entamoeba histolyticaThe peptidoglycan layer of Gram-positive bacteria is exposed to the extracellular environment. True False
- Walking pneumonia is most often caused by what type of bacterium?a. Klebsiellab. Mycoplasmac. Corynebacteriumd. Haemophiluse. Streptococcus pneumoniae"Presence of lactobacillus species, alpha-streptococci, dna diphtheroids in cultured urine specimen suggests" contaminated sample possible infection significant bacteriuria bladder infectionProtozoan cysts are resistant to many disinfection methods. True False
- This bacterium is a gram negative cocci. It can ferment glucose, meaning it is positive for fermentation of glucose test. It can also reduce nitrate. What is it?An 18-year-old male went to the emergency room after experiencing intense and sudden headaches, vomiting, diarrhea, stiff neck, achy joints, and a skin rash. He was quarantined after telling his physician that he had recently taken care of a dead relative who suffered the same symptoms. The laboratory results are as follows: Direct Microscopic Examination: Diplococci that are pink after G/S SBA: medium-sized, gray, and convex that is mucoid Carbohydrate utilization test: Glucose (+); Lactose (-); Maltose (+) Platelet count: 7,000/uL Prothrombin time: 20 seconds Partial thromboplastin time: 38 seconds Fibrinogen level: 100 mg/dL D-dimer: 20,000 ng/mL QUESTION: What do you think is the medical condition of the patient? JustifyAn 18-year-old male went to the emergency room after experiencing intense and sudden headaches, vomiting, diarrhea, stiff neck, achy joints, and a skin rash. He was quarantined after telling his physician that he had recently taken care of a dead relative who suffered the same symptoms. The laboratory results are as follows: Direct Microscopic Examination: Diplococci that are pink after G/S SBA: medium-sized, gray, and convex that is mucoid Carbohydrate utilization test: Glucose (+); Lactose (-); Maltose (+) Platelet count: 7,000/uL Prothrombin time: 20 seconds Partial thromboplastin time: 38 seconds Fibrinogen level: 100 mg/dL D-dimer: 20,000 ng/mL 1. What do you think is the medical condition of the patient? Justify your answer.