Preoperative Infection Screening
Preoperative Infection Screening - Related Videos
15:29
Microscopy-based Assays for High-throughput Screening of Host Factors Involved in Brucella Infection of Hela Cells
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Cited by 6 •
2016
Two assays for microscopy-based high-throughput screening of host factors involved in Brucella infection are described. The entry assay detects host factors required for Brucella entry and the endpoint assay those required for intracellular replication. While applicable for alternative approaches, siRNA screening in HeLa cells is used to illustrate the protocols.
08:20
RNAi Screening for Host Factors Involved in Vaccinia Virus Infection using Drosophila Cells
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Novel host factors involved in viral infection can be identified through cell-based genome-wide loss of function RNAi screening. A Drosophila cell culture model is particularly amenable to this approach due to the ease and efficiency of RNAi. Here we demonstrate this technique using vaccinia virus as an example.
01:16
Preoperational Thought IV: Numbers
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2026
Piaget’s preoperational stage, from about ages 2 to 7, is characterized by rapid growth in symbolic thinking. Children increasingly use words, images, and objects to represent ideas, although their reasoning remains largely intuitive. During this period, number sense develops from memorized counting toward an understanding of quantity and basic arithmetic.Counting and CardinalityChildren younger than age 3 may recite number words without fully understanding their numerical meaning. During the...
06:19
Galleria mellonella as an Antimicrobial Screening Model
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Cited by 8 •
2024
This study presents a standardized framework for optimizing G. mellonella infection models for use in preclinical antimicrobial assessment. The application of a G. mellonella model as part of a preclinical antimicrobial development pipeline could decrease the number of ineffective compounds progressing to clinical trials.
01:19
Preoperational Thought I: The Symbolic Function
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2026
Jean Piaget’s preoperational stage of cognitive development spans approximately ages 2 to 7. During this period, children increasingly think symbolically but are not yet able to perform logical mental operations consistently. Symbols are words, pictures, numbers, or objects that stand for something else. For example, the word "dog" can represent an entire category of animals, even when no dog is physically present. This ability allows children to mentally represent people, objects, and events...
FAQs
A patient's medical history and physical examination establish clinical context before testing. They can reveal signs suggesting active infection, indicate whether a finding needs closer assessment, and help clinicians decide which laboratory or microbiological investigations are relevant. This initial evaluation makes screening more individualized and supports a safer judgment about proceeding with surgery.
Targeted tests focus resources on findings and pathogens that matter for the planned operation and the patient's presentation. Laboratory or microbiological results can support recognition of active infection, identify relevant microbial colonization, or detect a pathogen that changes perioperative planning. Their value depends on interpreting results alongside clinical assessment rather than in isolation.
Colonization means microorganisms are present without necessarily indicating active infection, so the distinction is clinically important. Preoperative evaluation must interpret a positive microbiological finding in relation to signs, symptoms, and the overall assessment. Separating these situations helps clinicians avoid treating every detected organism identically while still recognizing findings that warrant precautions, treatment, or further evaluation.
Findings may influence whether surgery proceeds as planned, requires additional assessment, or should be timed differently. They can also inform antimicrobial prophylaxis, meaning preventive antimicrobial planning around the operation, and infection-control precautions. Screening results therefore serve as decision-support information that connects infection assessment with practical perioperative choices.
The process begins with review of medical history and physical examination, followed by laboratory or microbiological testing selected for the clinical situation. Clinicians then interpret evidence of active infection or colonization, consider whether further assessment is needed, and incorporate the findings into surgical timing, prophylaxis, and broader perioperative planning.
Preoperative infection screening is especially relevant when the assessment could alter surgical planning or infection-control measures. Its findings may identify previously unrecognized health risks, support individualized perioperative care, and help reduce avoidable postoperative complications. Its practical contribution lies in connecting pre-surgery assessment with decisions made before and around the operation.