细菌脐部需氧培养
通过采集肚脐周围的分泌物进行需氧菌培养和鉴定,以了解是否存在细菌感染。
{用于检测肚脐周围的细菌感染,帮助医生选择合适的抗生素治疗,采样过程简单、无痛,通常3-5天出结果,可明确感染菌种以便精准治疗}
关键信息一览
- LOINC
- 105925-2
- 简码
- BACTPER
- 别名
- Bacteria Periumbilical Aerobe Cult
- 类别
- 生化
- 样本
- serum
- 采血管
- Sterile bacterial culture transport swab system (e.g., Amies or Stuart's transport medium with polyester or flocked swab), or sterile screw-capped container for aspirates/tissue specimens. Culturettes with transport medium are preferred to maintain organism viability during transport.
- 单位
- N/A
- 是否空腹
- 否
- 适用人群
- 成人
- 性别
- all
- 年龄范围
- 0–120 岁
- 检测方法
- aerobic-culture
- CPT
- 87070 - Culture, bacterial; any other source except urine, blood, or stool, with isolation and presumptive identification of isolates (additional CPT codes 87077 for additional organism identification and 87184-87188 for susceptibility testing may be applicable based on findings)
- SNOMED
- 428531000124103 - Bacterial culture of skin (or related microbiology culture procedure codes depending on specific specimen subtype)
- 标本量
- Not applicable for swab-based collection. For tissue or aspirate specimens, a minimum of 0.5-1 mL of fluid or equivalent tissue sample is recommended. Swab specimens should be fully saturated with exudate when possible.
- 标本稳定性
- Specimens should be transported to the laboratory as soon as possible, preferably within 2 hours of collection at room temperature (20-25°C). If immediate transport is not feasible, specimens in Amies or Stuart's transport medium are stable for up to 24 hours at room temperature. Do not refrigerate swab specimens, as cold temperatures may kill fragile organisms. Tissue and fluid specimens may be held at room temperature for up to 24 hours.
- 溶血上限
- 500
- 脂血上限
- 1000
- 黄疸上限
- 500
- 报告时间
- 48–120 小时
- 医嘱频率
- routine
这是什么测试?
肚脐周围细菌培养鉴定是一项微生物学检查,用于检测和鉴定肚脐周围部位是否存在细菌感染。医生会用无菌棉签轻轻擦拭肚脐及其周围区域,采集分泌物样本,然后送至实验室进行需氧菌培养。实验室会培养并鉴定可能存在的细菌种类,以便明确诊断和指导后续治疗。
为什么需要做这个测试?
当肚脐出现红肿、疼痛、渗液、流脓等感染症状时,医生需要确定感染的病原菌种类。不同的细菌需要使用不同的抗生素进行治疗。通过细菌培养鉴定,医生可以准确了解致病菌,从而选择最有效的抗生素,避免盲目用药导致的治疗效果不佳或耐药性产生。
测试过程是怎样的?
采样时,医生或护士会用无菌棉签轻柔地擦拭肚脐内部的分泌物或脓性物质。整个过程快速简便,通常不会有明显不适。采集后的样本会被放入无菌容器中,立即送往检验科进行培养。实验室会将样本接种在适合需氧菌生长的培养基上,在37°C培养箱中培养24-48小时,观察是否有细菌生长,并对生长的细菌进行进一步鉴定和药敏试验。
测试结果如何解读?
如果结果显示有细菌生长,说明存在细菌感染,医生会根据鉴定出的菌种和药敏结果选择合适的抗生素进行治疗。如果结果显示无细菌生长,可能意味着感染较轻、已经使用过抗生素、或者感染由病毒/真菌引起,医生会根据临床症状综合判断并采取相应措施。
Reference range
No growth of pathogenic aerobic bacteria isolated. Normal skin flora (e.g., coagulase-negative staphylococci, Corynebacterium species, Micrococcus species) may be reported as commensal flora without clinical significance.N/A
No fasting required. Prior to collection, the periumbilical area should be gently cleaned with sterile saline if visibly soiled. Avoid application of topical antibiotics, antiseptic solutions, or ointments to the collection site for at least 24-48 hours prior to sampling, as these may suppress bacterial growth and yield false-negative results. If the patient is currently receiving systemic antibiotics, this should be documented and communicated to the laboratory.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
肚脐感染常见于新生儿脐带残端感染、成年人肚脐藏污纳垢导致的感染、或者腹部手术后的伤口感染。常见致病菌包括金黄色葡萄球菌、链球菌、大肠杆菌等。通过细菌培养鉴定,可以明确感染菌种,指导精准抗生素治疗,提高治愈率,减少抗生素滥用导致的耐药问题。对于反复发作的肚脐感染,培养检查有助于找出根本原因并进行针对性处理。
常见问题
采样前需要做什么准备?
这个测试有风险吗?
结果需要多长时间?
如果培养结果是阴性怎么办?
确诊后如何治疗?
参考资料
- 1
- 2
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本信息仅供教育用途,不能替代专业医疗建议、诊断或治疗。
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