Abstract：
BACKGROUND: At present, both 16G and 18G needles are used for percutaneous renal biopsy in China. This study aimed to compare the efficacy and safety of biopsy performed with the 18G needle vs. the 16G needle.
METHODS: The data of patients who underwent percutaneous renal biopsy at our hospital between January 2015 and December 2019 were retrospectively analyzed. The number of glomeruli obtained by puncture and postoperative complications were compared between patients undergoing biopsy with the 16G and 18G needles. Continuous variables were compared by the t test or the Mann-Whitney U test, and categorical variables by the chi-square test. Correlation analysis was used to examine the relationship of different variables with hematoma size.
RESULTS: Of the total 3138 kidney biopsies, 2526 were performed with the18G needle and 612 with the 16G needle. The number of glomeruli obtained was not significantly different between the two groups (P = 0.078). Large hematomas were significantly more common the 16G group than in the 18G group (9.31% vs. 5.98%, P = 0.003). Arteriovenous fistula was also more common in the 16G group (1.14% vs. 0.23%, P = 0.005). Other complications were rare, with similar incidence in the two groups.
CONCLUSIONS: The 18G needle is as effective as the 16G needle for percutaneous renal biopsy. The risk of large hematoma and arteriovenous fistula appear to be lower with the 18G needle.
METHODS: The data of patients who underwent percutaneous renal biopsy at our hospital between January 2015 and December 2019 were retrospectively analyzed. The number of glomeruli obtained by puncture and postoperative complications were compared between patients undergoing biopsy with the 16G and 18G needles. Continuous variables were compared by the t test or the Mann-Whitney U test, and categorical variables by the chi-square test. Correlation analysis was used to examine the relationship of different variables with hematoma size.
RESULTS: Of the total 3138 kidney biopsies, 2526 were performed with the18G needle and 612 with the 16G needle. The number of glomeruli obtained was not significantly different between the two groups (P = 0.078). Large hematomas were significantly more common the 16G group than in the 18G group (9.31% vs. 5.98%, P = 0.003). Arteriovenous fistula was also more common in the 16G group (1.14% vs. 0.23%, P = 0.005). Other complications were rare, with similar incidence in the two groups.
CONCLUSIONS: The 18G needle is as effective as the 16G needle for percutaneous renal biopsy. The risk of large hematoma and arteriovenous fistula appear to be lower with the 18G needle.
摘要：
背景：目前，在中国，16G和18G针均用于经皮肾活检。本研究旨在比较18G针与18G针进行活检的疗效和安全性。16G针。
方法：对2015年1月至2019年12月在我院接受经皮肾穿刺活检的患者资料进行回顾性分析。比较了使用16G和18G针进行活检的患者通过穿刺获得的肾小球数量和术后并发症。连续变量通过t检验或Mann-WhitneyU检验进行比较，和分类变量的卡方检验。采用相关性分析探讨不同变量与血肿大小的关系。
结果：在总共3138例肾脏活检中，2526用18G针进行，612用16G针进行。两组之间获得的肾小球数量没有显着差异（P=0.078）。16G组的大血肿明显多于18G组（9.31％vs.5.98%,P=0.003)。动静脉瘘在16G组中也更常见（1.14％vs.0.23%，P=0.005)。其他并发症很少见，两组发病率相似。
结论：对于经皮肾活检，18G针与16G针一样有效。使用18G针时，大血肿和动静脉瘘的风险似乎较低。
方法：对2015年1月至2019年12月在我院接受经皮肾穿刺活检的患者资料进行回顾性分析。比较了使用16G和18G针进行活检的患者通过穿刺获得的肾小球数量和术后并发症。连续变量通过t检验或Mann-WhitneyU检验进行比较，和分类变量的卡方检验。采用相关性分析探讨不同变量与血肿大小的关系。
结果：在总共3138例肾脏活检中，2526用18G针进行，612用16G针进行。两组之间获得的肾小球数量没有显着差异（P=0.078）。16G组的大血肿明显多于18G组（9.31％vs.5.98%,P=0.003)。动静脉瘘在16G组中也更常见（1.14％vs.0.23%，P=0.005)。其他并发症很少见，两组发病率相似。
结论：对于经皮肾活检，18G针与16G针一样有效。使用18G针时，大血肿和动静脉瘘的风险似乎较低。
