Evidence map›Paper›PMID 42572962›Full record

Trial reportDiseases of the colon and rectum2026

Short- and Long-term Outcomes of 3-Row Vs 2-Row Circular Staplers for Low Colorectal Anastomosis After Total Mesorectal Excision: A Single-Center, Randomized, Single-Blind, Phase III Trial (THREESTAPLER Study).

Inna Tulina, Petr B Tsugulya, Valeriia Kim, Mingze He, Vladimir Balaban, Petr Tsarkov

Registry-linked trialAbstract readRandomized Controlled TrialClinical Trial, Phase IIIEquivalence Trial
In one paragraph

Trial report in Diseases of the colon and rectum, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT03910699 (Uni-center, Patient-blinded, Randomized, 12 Month, Parallel-group, Non-inferiority Study to Compare Outcomes of Three-row Versus Two-row Circular Staplers for Colorectal Anastomosis Formation After Low Anterior Resection for Rectal Cancer), which is not on this map. Not yet cited in PubMed.

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0cells of the map it votes in
0citing papers in PubMed
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1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

NCT03910699 naunknown statusnot on this map

Uni-center, Patient-blinded, Randomized, 12 Month, Parallel-group, Non-inferiority Study to Compare Outcomes of Three-row Versus Two-row Circular Staplers for Colorectal Anastomosis Formation After Low Anterior Resection for Rectal Cancer

TypeinterventionalSponsorRussian Society of Colorectal SurgeonsRan2019 to 2020Enrolled154ConditionsAnastomotic Leak, Anastomotic Haemorrhage, Anastomotic Complication, Rectal NeoplasmsArmsThree-row circular stapler, Two-row circular stapler
3 · Its place in the literature

Who cites it

0 citing papers in PubMed.

No citing paper in PubMed yet.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

6 authors.

Inna TulinaClinic of Colorectal and Minimally Invasive Surgery, Sechenov University, Moscow, Russia.
Petr B TsugulyaClinic of Colorectal and Minimally Invasive Surgery, Sechenov University, Moscow, Russia.
Valeriia KimClinic of Colorectal and Minimally Invasive Surgery, Sechenov University, Moscow, Russia.
Mingze HeInstitute for Urology and Reproductive Health, Sechenov University, Moscow, Russia.ORCID 0000-0003-0601-4713
Vladimir BalabanClinic of Colorectal and Minimally Invasive Surgery, Sechenov University, Moscow, Russia.ORCID 0000-0002-7226-4641
Petr TsarkovClinic of Colorectal and Minimally Invasive Surgery, Sechenov University, Moscow, Russia.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundAnastomotic leakage remains a critical complication in colorectal surgery.

objectiveThis study compared the efficacy of 3-row versus 2-row circular staplers in reducing anastomotic leakage rates.

designProspective, randomized, single-center, noninferiority trial. SETTINGS: Clinic of Colorectal and Minimally Invasive Surgery, University Hospital No. 2, Sechenov University. PATIENTS: The trial included patients who underwent low anterior resection with total mesorectal excision.

interventionsPatients were randomly assigned in a 1:1 ratio to the 2-row or 3-row stapler group using centralized, computer-generated randomization. Outcome adjudicators, data collectors, and data analysts were blinded.

main outcome measuresAnastomotic leakage incidence, intra- and postoperative anastomotic bleeding, 30-day complications, low anterior resection syndrome, anastomotic stenosis, adverse events, time to and permanence of stoma, and 5-year overall survival are the main outcome measures.

resultsAmong 154 patients included in the study, the anastomotic leakage rate was 16.9% (13/77) in the 3-row group compared to 15.6% (12/77) in the 2-row group ( p = 0.8). The observed difference between groups was 1.3%, with a 1-sided 95% CI bounded below by -8.47%. The rates of anastomotic stricture were 1.4% (n = 2) in the 2-row group and 0.7% (n = 1) in the 3-row group ( p = 1). No patients experienced anastomotic hemorrhage. Stoma closure was successfully performed in 147 patients (95.5%). The 5-year overall survival was 80.2% (95% CI, 69.4%-92.8%) in the 3-row group versus 83.8% (95% CI, 75.6%-92.3%) in the 2-row group ( p = 0.80). LIMITATIONS: Routine postoperative proctography was not performed, so clinically silent (grade A) leaks may have been missed; the study was underpowered because the assumed 12% anastomotic leakage difference used for sample-size estimation was optimistic; neoadjuvant regimen heterogeneity may have influenced outcomes; and the single-center design may limit generalizability.

conclusionsThe 3-row stapler was not noninferior to the 2-row stapler in preventing anastomotic leakage. See Video Abstract . CLINICAL TRIAL REGISTRATION NUMBER: NCT03910699. RESULTADOS A CORTO Y LARGO PLAZO DE LAS GRAPADORAS CIRCULARES DE TRES FILAS FRENTE A LAS DE DOS FILAS PARA LA ANASTOMOSIS COLORRECTAL BAJA TRAS LA ESCISIN TOTAL DEL MESORRECTO UN ENSAYO CLNICO DE FASE III, ALEATORIZADO, SIMPLE CIEGO Y DE UN SOLO CENTRO ESTUDIO THREESTAPLER: ANTECEDENTES:La fuga anastomótica sigue siendo una complicación crítica en la cirugía colorrectal.OBJETIVO:Este estudio comparó la eficacia de las grapadoras circulares de tres filas frente a las de dos filas para reducir las tasas de fuga anastomótica.DISEÑO:Ensayo prospectivo, aleatorizado, unicéntrico y de no inferioridad.LUGAR:Clínica de Cirugía Colorrectal y Mínimamente Invasiva, Hospital Universitario Nº 2, Universidad Sechenov.PACIENTES:El ensayo incluyó pacientes sometidos a resección anterior baja con escisión total del mesorrecto.INTERVENCIONES:Los pacientes fueron aleatorizados 1:1 al grupo de grapadoras de dos o tres filas mediante aleatorización centralizada generada por computadora. Los evaluadores de resultados, los recolectores de datos y los analistas de datos estaban cegados.PRINCIPALES MEDIDAS DE RESULTADO:Incidencia de fuga anastomótica; sangrado anastomótico intra y postoperatorio; complicaciones a los 30 días; síndrome de resección anterior baja; Estenosis anastomótica; eventos adversos; tiempo hasta la formación y permanencia del estoma; y supervivencia global a 5 años.RESULTADOS:Entre los 154 pacientes incluidos en el estudio, la tasa de fuga anastomótica fue del 16,9 % (13/77) en el grupo de 3 filas, en comparación con el 15,6 % (12/77) en el grupo de 2 filas (p = 0,8). La diferencia observada entre los grupos fue del 1,3 %, con un intervalo de confianza unilateral del 95 % inferior a -8,47 %. Las tasas de estenosis anastomótica fueron del 1,4 % (n = 2) en el grupo de 2 filas y del 0,7 % (n = 1) en el grupo de 3 filas (p = 1). Ningún paciente presentó hemorragia anastomótica. El cierre del estoma se realizó con éxito en 147 pacientes (95,5 %). La supervivencia global a los 5 años fue del 80,2 % (intervalo de confianza del 95 %, 69,4-92,8) en el grupo de tres filas frente al 83,8 % (intervalo de confianza del 95 %, 75,6-92,3) en el grupo de dos filas (p = 0,80).LIMITACIONES:No se realizó proctografía postoperatoria de rutina; es posible que se hayan pasado por alto fugas clínicamente silentes (grado A); el estudio tuvo una potencia estadística insuficiente, ya que la diferencia del 12 % en la tasa de fugas anastomóticas estimada para el cálculo del tamaño muestral fue optimista; la heterogeneidad del régimen neoadyuvante pudo haber influido en los resultados; y el diseño unicéntrico puede limitar la generalización de los resultados.CONCLUSIONES:La grapadora de tres filas no demostró ser no inferior a la de dos filas en la prevención de fugas anastomóticas. (AI-generated translation )Número de registro del ensayo clínico: NCT03910699.

Indexed as

Anastomotic LeakProctectomyRectumSurgical StaplersSurgical StaplingAgedAnastomosis, SurgicalColorectal Surgical ProceduresFemaleHumansLow Anterior Resection SyndromeMaleMiddle AgedPostoperative ComplicationsPostoperative HemorrhageProspective StudiesAnastomotic leakageCircular staplerNoninferiority trialRandomized controlled trialTotal mesorectal excision

Identifiers

PMID42572962
PMCPMC13585166

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Registered trials

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