Haaranen S
Nord Vet Med. 1977 Nov;29(11):482-7.
In a field study consisting of about 7000 adult cattle 36 cases of corpora aliena (CAA) in the abomasum were found. After recording the clinical symptoms such as recurrent slight ruminal tympany and abdominal pain after eating, the metal specimens were found by a detector, with which the sound of the moving metal could be followed behind the xiphoid cartilage region. The diagnoses were confirmed by operation in 10 cases, when the specimens were found in the abomasum and removed. Four of these operations were performed directly near the linea alba and in six cases the specimens were removed by hand and magnet through the reticulo-abomasal opening after attempting the routine hard ware operation. In an additional 16 cases the foreign body could not be caught hold of and removed by a ruminal operation due to passage difficulties through the reticulo-abomasal opening. The results of the direct or indirect operations when the CAA was removed, were good. It is concluded that CAA can occur in some 5 per mille of the patient population and in some 50 per cent of these cases a traumatic reticulitis is also found. In most cases the clinical symptoms are vague. Only if the symptoms are painful and recurrent is the operation indicated.
在一项包含约7000头成年牛的实地研究中，发现真胃中有36例异物（CAA）。记录诸如进食后反复出现轻微瘤胃鼓气和腹痛等临床症状后，用探测器发现金属标本，通过它能追踪剑突软骨区域后方移动金属的声音。10例通过手术确诊，在真胃中发现标本并取出。其中4例手术直接在白线附近进行，6例在尝试常规硬件操作后，通过瘤网胃开口用手和磁铁取出标本。另外16例因异物通过瘤网胃开口困难，无法通过瘤胃手术抓住并取出。取出CAA的直接或间接手术结果良好。得出的结论是，CAA在约千分之五的患病动物中会出现，其中约50%的病例还伴有创伤性网胃炎。在大多数情况下，临床症状不明确。只有当症状疼痛且反复出现时才考虑手术。
