A cross-sectional study of anterior cutaneous nerve entrapment syndrome at an emergency department of a single center in Japan

A cross-sectional study of anterior cutaneous nerve entrapment syndrome at an emergency department of a single center in Japan - Tama-ACNES-EDO Study: Tama Anterior Cutaneous Nerve Entrapment Syndrome in Emergency Department Observational Study

Status

Active, not recruiting

Phases

Unknown

Study type

Observational

Source

JPRN

Registry ID

JPRN-UMIN000053733

Enrollment

Registered

2024-02-28

Start date

2024-02-19

Completion date

Unknown

Last updated

2026-06-29

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Anterior cutaneous nerve entrapment syndrome (ACNES)

Interventions

None listed

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: The medical records at TMTMC are all electronic, with a function for performing a full-text search of all patients' records. Using this full-text search function, we extracted cases from the records of all patients who visited the ED between January 1, 2014, and December 31, 2023. These cases contained descriptions of "anterior cutaneous nerve entrapment syndrome" (in both English and Japanese) or "ACNES." Subsequently, each case record was reviewed, and cases meeting all four of the following criteria were identified: 1) Presenting with abdominal pain at the ED, 2) a positive Carnett's sign, 3) effective and prompt pain relief from trigger point injections with local anesthetics, and 4) a final, comprehensive clinical diagnosis of ACNES by the attending physician.

Exclusion criteria

Exclusion criteria: None

Design outcomes

Primary

Measure	Time frame
Information as follows was collected by reviewing medical records of ED; patient age, sex, year of diagnosis, attending physician who diagnosed, past medical history and comorbidities, history about clinical features of pain (including time duration from symptom onset to presentation, exacerbation by motion or position changes, quality, severity, and location of pain), results of abdominal physical examination (including Carnett's sign, pinch sign, sensory disturbances), modalities conducted to investigate or differentiate a cause of abdominal pain in ED, number of clinics or hospitals visited before the diagnosis was made in the ER (if any), and differential diagnosis attending physical considered. Furthermore, an attempt of follow-up by telephone interview with all eligible patients was conducted to investigate a long-term prognosis for recurrence of ACNES or change of diagnosis after returning from the ED.	—

Measure

Time frame

Information as follows was collected by reviewing medical records of ED; patient age, sex, year of diagnosis, attending physician who diagnosed, past medical history and comorbidities, history about clinical features of pain (including time duration from symptom onset to presentation, exacerbation by motion or position changes, quality, severity, and location of pain), results of abdominal physical examination (including Carnett's sign, pinch sign, sensory disturbances), modalities conducted to investigate or differentiate a cause of abdominal pain in ED, number of clinics or hospitals visited before the diagnosis was made in the ER (if any), and differential diagnosis attending physical considered. Furthermore, an attempt of follow-up by telephone interview with all eligible patients was conducted to investigate a long-term prognosis for recurrence of ACNES or change of diagnosis after returning from the ED.

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Countries

Japan

Contacts

Public ContactYasuhiro Kano

Tokyo Metropolitan Tama Medical Center Department of Emergency and General Medicine

yasuhiro.kano.21@gmail.com(+81)42-323-5111

Outcome results