Evidence map›Paper›PMID 40232398›Full record

ArticleSurgery today2025

The conventional method of blood-loss calculation can underestimate true blood loss during laparoscopic pancreaticoduodenectomy: a dual-institute experience.

Masashi Tsunematsu, Yoshihiro Shirai, Ryoga Hamura, Koichiro Haruki, Kenei Furukawa, Shinji Onda, Michinori Matsumoto, Norimitsu Okui, Tomohiko Taniai, Toru Ikegami

Abstract read
PubMed Publisher
In one paragraph

Article in Surgery today, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

0numbers the graph read from it
0cells of the map it votes in
1citing papers in PubMed
–field-weighted citation impact
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.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

1 citing paper in PubMed.

  1. Article
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

10 authors.

Masashi TsunematsuDepartment of Digestive Surgery, Saku Central Hospital Advanced Care Center, 3400-28, Nakagomi, Saku, Nagano, 385-0051, Japan. tsunematsu@jikei.ac.jp.
Yoshihiro ShiraiDepartment of Digestive Surgery, Saku Central Hospital Advanced Care Center, 3400-28, Nakagomi, Saku, Nagano, 385-0051, Japan.
Ryoga HamuraDepartment of Digestive Surgery, Saku Central Hospital Advanced Care Center, 3400-28, Nakagomi, Saku, Nagano, 385-0051, Japan.
Koichiro HarukiDivision of Hepatobiliary and Pancreatic Surgery, Department of Surgery, The Jikei University School of Medicine, 3-25-8, Nishi-Shinbashi, Minato-Ku, Tokyo, 105-8461, Japan.
Kenei FurukawaDivision of Hepatobiliary and Pancreatic Surgery, Department of Surgery, The Jikei University School of Medicine, 3-25-8, Nishi-Shinbashi, Minato-Ku, Tokyo, 105-8461, Japan.
Shinji OndaDepartment of Digestive Surgery, Saku Central Hospital Advanced Care Center, 3400-28, Nakagomi, Saku, Nagano, 385-0051, Japan.
Michinori MatsumotoDivision of Hepatobiliary and Pancreatic Surgery, Department of Surgery, The Jikei University School of Medicine, 3-25-8, Nishi-Shinbashi, Minato-Ku, Tokyo, 105-8461, Japan.
Norimitsu OkuiDepartment of Digestive Surgery, Saku Central Hospital Advanced Care Center, 3400-28, Nakagomi, Saku, Nagano, 385-0051, Japan.
Tomohiko TaniaiDivision of Hepatobiliary and Pancreatic Surgery, Department of Surgery, The Jikei University School of Medicine, 3-25-8, Nishi-Shinbashi, Minato-Ku, Tokyo, 105-8461, Japan.
Toru IkegamiDivision of Hepatobiliary and Pancreatic Surgery, Department of Surgery, The Jikei University School of Medicine, 3-25-8, Nishi-Shinbashi, Minato-Ku, Tokyo, 105-8461, Japan.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeThis study investigated whether blood loss (BL) was. truly less in patients undergoing laparoscopic pancreaticoduodenectomy (LPD) than in those undergoing open pancreaticoduodenectomy (OPD).

methodsA total of 98 patients undergoing pancreaticoduodenectomy between 2021 and 2023 were divided into OPD and LPD groups and compared. Estimated BL was calculated from the perioperative changes in hematocrit, hemoglobin, or red blood cell volume. Actual BL was calculated using the conventional method as the sum of the intraoperative aspirated blood volume and surgical gauze weight.

resultsActual BL was significantly lower in the LPD group than in the OPD group (150 [80-350] ml vs. 345 [150-700] ml, p = 0.003). However, there were no significant differences in the estimated BL calculated from the hematocrit (461 [187-626] ml vs. 351 [153-737] ml, p = 0.972), hemoglobin, or red blood cell volume. Estimated BL showed a stronger linear correlation with actual BL in the OPD group (r = 0.447-0.669) than in the LPD group (r = 0.158-0.417). OPD was not a significant factor in the increased estimated BL.

conclusionsThe conventional method for calculating the BL in LPD may underestimate the actual loss, highlighting the need for a more accurate method of evaluation.

Indexed as

Blood Loss, SurgicalLaparoscopyPancreaticoduodenectomyAgedAged, 80 and overBlood VolumeFemaleHematocritHemoglobinsHumansMaleMiddle AgedHemoglobinsBlood lossLaparoscopic pancreaticoduodenectomyOpen pancreaticoduodenectomy

Identifiers

PMID40232398

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.