HAZARDS OF GLOVE POWDER IN RENAL ANGIOGRAPHY

Preventing Inadvertent Foreign Body Injection in Angiography

Background Inadvertent injection of foreign material during angiography, particularly neuroangiography, should be avoided to reduce the risk of embolic complications. Woven gauze and cotton fabrics have been identified as sources of inadvertent foreign body embolization. Purpose To find the source of particles that contaminate injections on an angiography table and to identify measures for their reduction. Materials and Methods The number and size of particles on an angiographic supply table at a tertiary stroke center were analyzed by using the Coulter principle in September 2019. Seven conditions (saline directly drawn from its bag, from a small metal cup, from a small plastic cup, from a large plastic bowl, from a large plastic bowl with a guidewire and its sheath, from a large plastic bowl with a stack of woven gauze, and from a large plastic bowl with a large cotton towel) were tested at different time intervals (0, 30, and 60 minutes). Each container was filled with saline, and particle count was analyzed immediately after unpackaging, after rinsing with saline, and after introduction of foreign material; t tests were used for statistical comparisons. Results Freshly unpacked basins can be contaminated with many submillimetric particles (range, 4.4-25.1 particles per milliliter on average, depending on basin). Cotton towels and woven gauze placed in rinsed basins resulted in a significant increase in particles (from 1.5 particles per milliliter ± 0.4 [standard deviation] to 64.4 particles per milliliter ± 4.1 and 257.1 particles per milliliter ± 11.6, respectively; P < .001). Rinsing basins with saline significantly reduced the number of particles (P ≤ .03). Drawing saline directly from bags through intravenous lines yielded the lowest number of particles (0.1 particles per milliliter). Conclusion To decrease the risk for foreign body embolization, it is best to rinse all basins before use, draw saline and contrast agents directly from the respective bags and bottles through intravenous lines, and avoid cotton towels and woven gauze in basins and on the angiography table altogether whenever possible. © RSNA, 2021 See also the editorial by Nikolic in this issue.

Granulomatous myocarditis secondary to cornstarch

A 44-year-old white female with chronic rheumatic heart disease and mitral insufficiency was admitted to the hospital for cardiac catheterization and mitral valve replacement. On the ninth postoperative day the patient experienced a sudden onset of chest pain, hypotension, and died shortly therafter. Autopsy revealed multiple mural thrombi of the left atrium, one of which occluded the mitral orifice. Histologic examination showed a granulomatous and non-specific interstitial myocarditis involving all chambers of the heart. In the granulomas, both inside and outside giant cells, rounded foreign bodies were noted which stained light blue with hematoxylin and eosin, red with the periodic acid Schiff reagent, dark bluish-black with Gram's iodine, and showed Maltese cross birefringence under polarized light. These particles were identical with starch granules from surgical glove powder. The cause of death was acute mitral occlusion form a flapping mural thrombus.

Starch granulomas after transurethral resection of bladder tumors

Starch granulomas have been observed in 3 patients in a series of 140 under treatment for bladder cancer during the period 1949 to 1969 in one hospital. The lesions were observed at the fourth or subsequent transurethral procedure, suggesting strongly that the starch had been introduced at a previous transurethral procedure. The granulomatous reaction may simulate a recurrence of the initial bladder tumor.