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The Effect of Nutritional Status on Postoperative Mortality and Morbidity in the Geriatric Population Undergoing Gastrointestinal Surgery

Effects of the Geriatric Nutritional Risk Index (GNRI), Mini Nutritional Assessment-Short Form (mNA-SF), and Systemic Immune-Inflammation Index (SII) on Postoperative Morbidity and Mortality in Geriatric Patients Undergoing Gastrointestinal Surgery

Status
Active, not recruiting
Phases
Unknown
Study type
Observational
Source
ClinicalTrials.gov
Registry ID
NCT07374055
Enrollment
200
Registered
2026-01-28
Start date
2025-02-01
Completion date
2026-05-30
Last updated
2026-01-30

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

Conditions

Geriatric Anesthesia, Nutrition Assessment

Keywords

Geriatric, Nutritional, Mortality, Gastrointestinal surgery

Brief summary

The purpose of this study was to compare the sensitivity and specificity of the Geriatric Nutritional Risk Index (GNRI), Mini Nutritional Assessment Scale-Short Form (mNA-SF) and Systemic Immune-Inflammatory Index (SII) values calculated in the preoperative evaluation in patients over 65 years of age who underwent gastrointestinal surgery, in predicting morbidity and mortality in the postoperative period.

Detailed description

It is crucial to evaluate the impact of nutritional status and systemic inflammation markers on postoperative outcomes in geriatric patients undergoing gastrointestinal surgery. Nutritional status has a decisive impact on the development of morbidity and mortality in geriatric patients. The risk of malnutrition is particularly high in the geriatric patient population undergoing gastrointestinal surgery. Predicting postoperative outcomes in these patient groups is becoming increasingly important. To this end, many different risk scoring systems have been developed. Low nutritional scores and increased inflammatory responses are associated with high mortality, prolonged hospitalization and intensive care unit stays, and complications. The primary goal of preoperative risk scoring is to predict potential complications before, during, and after surgery, and to minimize risks and mortality by attempting to prevent them.

Interventions

OTHERPreoperative Risk Scoring

Patients will be evaluated preoperatively using three distinct scoring systems: the Geriatric Nutritional Risk Index (GNRI), the Mini Nutritional Assessment-Short Form (mNA-SF), and the Systemic Immune-Inflammation Index (SII). These scores are calculated based on serum albumin levels, body weight, a 6-question survey, and laboratory values (platelets, neutrophils, and lymphocytes).

OTHERPostoperative Morbidite and Mortality Monitoring

Systematic tracking of postoperative outcomes including hospital and ICU stay duration, pulmonary complications (e.g., pneumonia, embolism), extrapulmonary complications (e.g., surgical site infection, organ failure, delirium), and mortality rates at 30, 60, and 90 days.

OTHERDelirium Assessment Protocol

Patients will be monitored for delirium preoperatively, on the first postoperative day, and before discharge using the Confusion Assessment Method (CAM/CAM-ICU) and the Richmond Agitation-Sedation Scale (RASS).

Sponsors

Dr. Lutfi Kirdar Kartal Training and Research Hospital
Lead SponsorOTHER_GOV

Study design

Observational model
CASE_ONLY
Time perspective
PROSPECTIVE

Eligibility

Sex/Gender
ALL
Age
65 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* Patients scheduled to undergo gastrointestinal surgery. Age 65 years and older. ASA (American Society of Anesthesiologists) physical status class 3 or 4. Mini-Mental State Examination (MMSE) score of 21 or higher

Exclusion criteria

* Patients who do not consent to participate in the study. Patients with acute infection during the preoperative period. Patients who received albumin replacement in the preoperative period. Patients with a Mini-Mental State Examination (MMSE) score below 21.

Design outcomes

Primary

MeasureTime frameDescription
Systemic Immune-Inflammation Index (SII)Preoperative (Baseline)Calculated as (Platelets x Neutrophils) / Lymphocytes from preoperative blood samples.The unit of measure is cells per microliter.
Geriatric Nutritional Risk Index (GNRI) as a predictor of postoperative complicationsPreoperative (Baseline)GNRI will be calculated using serum albumin and body weight. Scores will be used to categorize patients' nutritional risk.Units on a scale of 0 to 120, where lower scores indicate higher nutritional risk.
Mini Nutritional Assessment-Short Form (mNA-SF) scorePreoperative (Baseline)A 6-question survey to screen for malnutrition.Measured on a scale of 0 to 14 points, where 0-7 indicates malnourishment.

Secondary

MeasureTime frameDescription
Postoperative MorbidityUp to 30 days post-surgeryMonitoring of pulmonary (e.g., pneumonia, embolism) and extrapulmonary (e.g., surgical site infection, organ failure, anastomosis leak) complications
Incidence of DeliriumPreoperative to dischargeAssessment of delirium using the Confusion Assessment Method (CAM/CAM-ICU) and Richmond Agitation-Sedation Scale (RASS).
Length of Hospital and ICU StayTotal duration of hospitalizationRecording the number of days spent in the hospital and intensive care unit.
Postoperative Mortality Rate30, 60, and 90 days post-surgeryTracking patient survival rates at specified intervals after the operation.

Countries

Turkey (Türkiye)

Contacts

PRINCIPAL_INVESTIGATORMinel N KUTUPOGLU SEZER, MD

University of Health Sciences, Kartal Dr. Lutfi Kirdar City Hospital

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026