Sacchetti A, Carraccio C, Lichenstein R
Department of Emergency Medicine, Our Lady of Lourdes Medical Center, Camden, New Jersey.
Pediatr Emerg Care. 1994 Aug;10(4):204-7. doi: 10.1097/00006565-199408000-00005.
The study purpose was to determine the ability of hand-held metal detectors (HHMDs) to identify the presence of ingested metallic foreign bodies (MFBs). Twenty-three children presenting to the emergency department with a complaint of MFBs ingested were enrolled. Sixteen of 23 patients had radiographically proven foreign bodies. The MFBs comprised coins (n = 11), a button battery (n = 1), a medallion (n = 1), a token (n = 1), a needle (n = 1), and a marble (leaded glass) (n = 1). The HHMD correctly detected 15 of 16 radiographically positive MFBs (93%) and correctly excluded a potential MFB in six of six radiographically negative cases. The only foreign body not detected was an ingested needle. One radiograph was equivocal. Radiographic localization of the ingested objects was as follows: esophagus, n = 4; stomach, n = 9; and intestines, n = 3. The HHMD correctly localized all detected MFBs. The HHMD had a sensitivity of 94%, a specificity of 100%, a positive predictive value of 100%, and a negative predictive value of 86%. HHMDs are effective screening devices for possible ingested MFBs. Positive studies localized to the stomach and lower gastrointestinal tract do not require confirmatory radiographic studies.
本研究的目的是确定手持式金属探测器（HHMDs）识别摄入金属异物（MFBs）的能力。纳入了23名因摄入MFBs而到急诊科就诊的儿童。23例患者中有16例经影像学证实存在异物。MFBs包括硬币（n = 11）、纽扣电池（n = 1）、奖章（n = 1）、代币（n = 1）、针（n = 1）和弹珠（铅玻璃）（n = 1）。HHMD正确检测出16例影像学阳性MFBs中的15例（93%），并在6例影像学阴性病例中的6例中正确排除了潜在的MFB。唯一未检测到的异物是一枚摄入的针。有一张X光片结果不明确。摄入物体的影像学定位如下：食管，n = 4；胃，n = 9；肠道，n = 3。HHMD正确定位了所有检测到的MFBs。HHMD的灵敏度为94%，特异度为100%，阳性预测值为100%，阴性预测值为86%。HHMDs是用于筛查可能摄入的MFBs的有效设备。定位在胃和下胃肠道的阳性检查结果不需要进行确认性影像学检查。
