Evidence map›Paper›PMID 40186194›Full record

ArticleBMC surgery2025

Hypocalcemia was associated with increased perioperative blood loss and blood transfusion in elderly patients with hip fracture: a retrospective study.

Yunqing Zhang, Kun Lu, Qi Liu, Chun Liu, Shilong Su, Chunhua Yang

Abstract read
In one paragraph

Article in BMC surgery, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.

0numbers the graph read from it
0cells of the map it votes in
2citing 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

2 citing papers in PubMed.

  1. Review
  2. 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

6 authors.

Yunqing ZhangDepartment of Orthopedics, The First Hospital of Changsha, No.311 Yingpan Road, Changsha, 410005, Hunan Province, China.
Kun LuDepartment of Orthopedics, The First Hospital of Changsha, No.311 Yingpan Road, Changsha, 410005, Hunan Province, China.
Qi LiuDepartment of Orthopedics, The First Hospital of Changsha, No.311 Yingpan Road, Changsha, 410005, Hunan Province, China.
Chun LiuDepartment of Orthopedics, The First Hospital of Changsha, No.311 Yingpan Road, Changsha, 410005, Hunan Province, China.
Shilong SuDepartment of Orthopedics, Peking University Third Hospital, No.49 North Garden Road. Haidian, Beijing, 100191, China. sushilong2020@163.com.
Chunhua YangDepartment of Orthopedics, The First Hospital of Changsha, No.311 Yingpan Road, Changsha, 410005, Hunan Province, China.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundSerum calcium is the critical coagulation factor in physiological coagulation, and hypocalcemia has been found to be associated with more blood loss in many diseases. The purpose of this study was to explore the effect of hypocalcemia on total blood loss (TBL) and blood transfusion in elderly patients with hip fracture. PATIENTS AND

methodsElderly patients with hip fracture undergoing surgery in our hospital were included in this study from January 2020 to May 2023. The demographic data, perioperative parameters, hemoglobin, hematocrit, and transfusion requirement were recorded and analyzed. Hypocalcemia was defined as an albumin-corrected calcium level of less than 2.15 mmol/L. TBL of each patient was calculated using the formulas of Nadler and Gross. Blood loss on the 1st and 5th postoperative days was calculated.

results682 elderly patients with hip fracture were included in the study. On admission, the prevalence of hypocalcemia was 40.47%. Both the TBL on the first day (714.91 ± 396.05 ml vs. 640.31 ± 398.83 ml, P = 0.016) and the fifth day (1035.87 ± 528.77 ml vs. 859.92 ± 434.99 ml, P < 0.001) after operation in the hypocalcemia group were higher than those in the normocalcemia group. The preoperative, postoperative and perioperative blood transfusion rates of hypocalcemia patients were higher than those of the normocalcemia group.

conclusionHypocalcemia was associated with increased TBL and blood transfusion in elderly patients with hip fracture during the perioperative period.

Indexed as

Blood Loss, SurgicalBlood TransfusionHip FracturesHypocalcemiaAgedAged, 80 and overFemaleHumansMaleRetrospective StudiesBlood lossBlood transfusionElderlyHip fractureHypocalcemia

Identifiers

PMID40186194
PMCPMC11969727

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
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.