The negative appendectomy rate: Who benefits from preoperative CT?

Emily M. Webb, Alexander Nguyen, Zhen J. Wang, Joseph W. Stengel, Antonio C. Westphalen, Fergus Coakley

Research output: Contribution to journalArticle

34 Citations (Scopus)

Abstract

OBJECTIVE. The purpose of this article is to determine the negative appendectomy rates of patients who did and did not undergo preoperative CT and to determine, more specifically, whether men benefit from preoperative CT. MATERIALS AND METHODS. We identified 512 patients who had a nonincidental appendectomy between July 1, 2002, and June 30, 2007. Pathology records were compared with a radiology records search to determine which patients underwent preoperative CT. Proportions of patients were compared between groups using the Fisher exact test. RESULTS. Of 512 patients who had a nonincidental appendectomy, 465 (91%) underwent preoperative CT, and 47 (9%) underwent appendectomy only on the basis of clinical findings. Overall, 22 of 465 patients (4.7%) who underwent preoperative CT had a negative appendectomy compared with six of 47 patients who did not undergo preoperative imaging (negative appendectomy rate, 12.7%; p = 0.03). Among men, six of 237 (2.5%) with preoperative CT had a negative appendectomy, versus five of 42 without imaging (negative appendectomy rate, 11.9%; p = 0.01). CONCLUSION. The negative appendectomy rate was decreased for adult patients who underwent preoperative CT compared with patients who did not undergo preoperative imaging. Although most prior studies have suggested that CT is efficacious only in decreasing the negative appendectomy rate among women, we found that men benefit from CT as well.

Original languageEnglish (US)
Pages (from-to)861-866
Number of pages6
JournalAmerican Journal of Roentgenology
Volume197
Issue number4
DOIs
StatePublished - Oct 2011
Externally publishedYes

Fingerprint

Appendectomy
Radiology
Pathology

Keywords

  • Appendicitis
  • CT
  • Negative appendectomy rate

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging

Cite this

Webb, E. M., Nguyen, A., Wang, Z. J., Stengel, J. W., Westphalen, A. C., & Coakley, F. (2011). The negative appendectomy rate: Who benefits from preoperative CT? American Journal of Roentgenology, 197(4), 861-866. https://doi.org/10.2214/AJR.10.5369

The negative appendectomy rate : Who benefits from preoperative CT? / Webb, Emily M.; Nguyen, Alexander; Wang, Zhen J.; Stengel, Joseph W.; Westphalen, Antonio C.; Coakley, Fergus.

In: American Journal of Roentgenology, Vol. 197, No. 4, 10.2011, p. 861-866.

Research output: Contribution to journalArticle

Webb, EM, Nguyen, A, Wang, ZJ, Stengel, JW, Westphalen, AC & Coakley, F 2011, 'The negative appendectomy rate: Who benefits from preoperative CT?', American Journal of Roentgenology, vol. 197, no. 4, pp. 861-866. https://doi.org/10.2214/AJR.10.5369
Webb, Emily M. ; Nguyen, Alexander ; Wang, Zhen J. ; Stengel, Joseph W. ; Westphalen, Antonio C. ; Coakley, Fergus. / The negative appendectomy rate : Who benefits from preoperative CT?. In: American Journal of Roentgenology. 2011 ; Vol. 197, No. 4. pp. 861-866.
@article{f47c3ba84c684c558188d5f987e78734,
title = "The negative appendectomy rate: Who benefits from preoperative CT?",
abstract = "OBJECTIVE. The purpose of this article is to determine the negative appendectomy rates of patients who did and did not undergo preoperative CT and to determine, more specifically, whether men benefit from preoperative CT. MATERIALS AND METHODS. We identified 512 patients who had a nonincidental appendectomy between July 1, 2002, and June 30, 2007. Pathology records were compared with a radiology records search to determine which patients underwent preoperative CT. Proportions of patients were compared between groups using the Fisher exact test. RESULTS. Of 512 patients who had a nonincidental appendectomy, 465 (91{\%}) underwent preoperative CT, and 47 (9{\%}) underwent appendectomy only on the basis of clinical findings. Overall, 22 of 465 patients (4.7{\%}) who underwent preoperative CT had a negative appendectomy compared with six of 47 patients who did not undergo preoperative imaging (negative appendectomy rate, 12.7{\%}; p = 0.03). Among men, six of 237 (2.5{\%}) with preoperative CT had a negative appendectomy, versus five of 42 without imaging (negative appendectomy rate, 11.9{\%}; p = 0.01). CONCLUSION. The negative appendectomy rate was decreased for adult patients who underwent preoperative CT compared with patients who did not undergo preoperative imaging. Although most prior studies have suggested that CT is efficacious only in decreasing the negative appendectomy rate among women, we found that men benefit from CT as well.",
keywords = "Appendicitis, CT, Negative appendectomy rate",
author = "Webb, {Emily M.} and Alexander Nguyen and Wang, {Zhen J.} and Stengel, {Joseph W.} and Westphalen, {Antonio C.} and Fergus Coakley",
year = "2011",
month = "10",
doi = "10.2214/AJR.10.5369",
language = "English (US)",
volume = "197",
pages = "861--866",
journal = "AJR. American journal of roentgenology",
issn = "0361-803X",
publisher = "American Roentgen Ray Society",
number = "4",

}

TY - JOUR

T1 - The negative appendectomy rate

T2 - Who benefits from preoperative CT?

AU - Webb, Emily M.

AU - Nguyen, Alexander

AU - Wang, Zhen J.

AU - Stengel, Joseph W.

AU - Westphalen, Antonio C.

AU - Coakley, Fergus

PY - 2011/10

Y1 - 2011/10

N2 - OBJECTIVE. The purpose of this article is to determine the negative appendectomy rates of patients who did and did not undergo preoperative CT and to determine, more specifically, whether men benefit from preoperative CT. MATERIALS AND METHODS. We identified 512 patients who had a nonincidental appendectomy between July 1, 2002, and June 30, 2007. Pathology records were compared with a radiology records search to determine which patients underwent preoperative CT. Proportions of patients were compared between groups using the Fisher exact test. RESULTS. Of 512 patients who had a nonincidental appendectomy, 465 (91%) underwent preoperative CT, and 47 (9%) underwent appendectomy only on the basis of clinical findings. Overall, 22 of 465 patients (4.7%) who underwent preoperative CT had a negative appendectomy compared with six of 47 patients who did not undergo preoperative imaging (negative appendectomy rate, 12.7%; p = 0.03). Among men, six of 237 (2.5%) with preoperative CT had a negative appendectomy, versus five of 42 without imaging (negative appendectomy rate, 11.9%; p = 0.01). CONCLUSION. The negative appendectomy rate was decreased for adult patients who underwent preoperative CT compared with patients who did not undergo preoperative imaging. Although most prior studies have suggested that CT is efficacious only in decreasing the negative appendectomy rate among women, we found that men benefit from CT as well.

AB - OBJECTIVE. The purpose of this article is to determine the negative appendectomy rates of patients who did and did not undergo preoperative CT and to determine, more specifically, whether men benefit from preoperative CT. MATERIALS AND METHODS. We identified 512 patients who had a nonincidental appendectomy between July 1, 2002, and June 30, 2007. Pathology records were compared with a radiology records search to determine which patients underwent preoperative CT. Proportions of patients were compared between groups using the Fisher exact test. RESULTS. Of 512 patients who had a nonincidental appendectomy, 465 (91%) underwent preoperative CT, and 47 (9%) underwent appendectomy only on the basis of clinical findings. Overall, 22 of 465 patients (4.7%) who underwent preoperative CT had a negative appendectomy compared with six of 47 patients who did not undergo preoperative imaging (negative appendectomy rate, 12.7%; p = 0.03). Among men, six of 237 (2.5%) with preoperative CT had a negative appendectomy, versus five of 42 without imaging (negative appendectomy rate, 11.9%; p = 0.01). CONCLUSION. The negative appendectomy rate was decreased for adult patients who underwent preoperative CT compared with patients who did not undergo preoperative imaging. Although most prior studies have suggested that CT is efficacious only in decreasing the negative appendectomy rate among women, we found that men benefit from CT as well.

KW - Appendicitis

KW - CT

KW - Negative appendectomy rate

UR - http://www.scopus.com/inward/record.url?scp=80053265997&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=80053265997&partnerID=8YFLogxK

U2 - 10.2214/AJR.10.5369

DO - 10.2214/AJR.10.5369

M3 - Article

C2 - 21940573

AN - SCOPUS:80053265997

VL - 197

SP - 861

EP - 866

JO - AJR. American journal of roentgenology

JF - AJR. American journal of roentgenology

SN - 0361-803X

IS - 4

ER -