Nutrition affects surgical outcomes like postoperative recovery, complication rates, and total morbidity and mortality [1]. Postoperative nutrition is essential for wound healing, immune function, and tissue restoration. Post-surgery physiological stress increases metabolic demands. If these expectations aren't met, the patient may struggle to recover and have poor clinical outcomes. Malnutrition—including obesity-related undernutrition—is associated with postoperative complications, longer hospital stays, higher readmission rates, and higher healthcare costs [2]. In contrast, a healthy diet helps patients cope with surgery and recuperate afterward. Malnutrition in surgical patients is a major healthcare issue. Malnutrition affects many hospitalised patients, especially those after surgery, according to research. According to the Global Nutrition Report, millions are malnourished [3]. Hospital studies reveal 20%–50% of patients are undernourished. Despite having dietary support and healthcare, many surgical patients in industrialised nations suffer from malnutrition due to advanced age, chronic illness, cancer, gastrointestinal difficulties, or lack of access to healthcare [4]. Socioeconomic factors, dietary deficits, infections, and late-stage illnesses needing surgery increase malnutrition in developing countries like India.

Concerning trends arise from national surgery patient malnutrition data. India is known for malnutrition, with 30–60% of hospitalised patients undernourished [5]. The lack of standardised nutritional screening tools in hospitals, the time it takes to diagnose nutritional deficiencies, and the difficulty of accessing healthcare contribute to this high incidence [6]. Preoperative nutritional diagnosis and management for general surgery patients in Indian hospitals, especially public and low-resource facilities, is lacking. Such patients are more likely to experience postoperative complications such infections, delayed wound healing, prolonged mechanical breathing, and death [7]. Due to India's high surgical morbidity and mortality, we must study how preoperative nutritional condition affects surgical results. Malnutrition impacts surgery healing in several ways [8]. The most common type of malnutrition in hospitalised patients is protein-energy malnutrition, which causes muscle loss, immune system weakness, and decreased surgical tolerance.

Malnourished individuals with low serum albumin levels had higher fatality rates, surgical site infections, and poorer wound healing [9]. Micronutrient deficiencies such vitamin A, C, D, zinc, and iron deficiency hinder immune function and tissue regeneration. Obesity alters inflammatory responses, increasing the likelihood of postoperative issues such deep vein thrombosis, cardiovascular events, and poor wound healing. Systematic dietary examination and correction before surgery is required since these imbalances significantly impact surgical patients' prognoses.

Preoperative nutritional evaluation is crucial for malnutrition-prone individuals. The Nutritional Risk Screening (NRS-2002), Subjective Global Assessment (SGA), and Body Mass Index (BMI) are used to assess patients' nutritional health before surgery. Laboratory indicators including serum albumin and prealbumin are also used to assess nutritional status. Even with screening approaches, routine preoperative nutritional assessment is often ignored in clinical practice, especially in low-resource settings [10]. Filling this gap with nutritional screening in preoperative exams can improve patient outcomes and reduce postoperative problems and healthcare costs. Preoperative nutritional deficits must be addressed during perioperative care due to significant evidence linking malnutrition to poor surgical outcomes. Dietary guidance, micronutrient supplements, and enteral or parenteral feeding assist surgery patients' recuperation, reduce complications, and boost survival rates. Despite their benefits, nutritional therapies are rarely used in low-resource settings where surgical operations are prioritised over patient care [11]. Thus, understanding surgical patient malnutrition and its effects on postoperative outcomes is essential to influencing policy and clinical practice to improve surgical treatment.

Nutritional status is rarely routinely evaluated and managed in clinical practice, despite its proven impact on surgical outcomes. Preoperative tests usually focus on cardiovascular, pulmonary, and anaesthetic risk factors rather than food. Many institutions, including India, do not follow established nutritional assessment guidelines before surgery, resulting in malnutrition underdiagnosis and undertreatment [12]. Many patients go into surgery with untreated dietary deficits, which can damage their recovery and health. This study examines how pre-surgery nutrition influences post-surgical outcomes in Nalanda Medical College & Hospital, Bihar, patients who had general surgery. Understanding the relationship between nutrition and surgery improves patient care and reduces postoperative issues. Malnutrition causes infections, delayed wound healing, and long hospital stays, straining healthcare systems and raising costs. Optimising preoperative nutritional therapy might improve surgical results and reduce hospital burden, especially in public facilities like Nalanda Medical College & Hospital, where patient load is high and resources are scarce.

Surgical treatment should include nutritional assessment and evidence-based guidelines. India lacks data on surgical patients' malnutrition and its effects, even though global guidelines recommend nutritional assessment before surgery. This study should be conducted in India to better understand surgical patients' dietary challenges and provide personalised guidance for improving perioperative nutritional therapy. This study will expand surgical nutrition knowledge by providing Indian-specific data, which is why it is significant. Western countries have conducted most surgical nutrition research, but their patient demographics, disease profiles, and healthcare systems differ from India's. This study examines surgical patients' nutrition at an Indian government hospital. Locally relevant data will aid clinical decision-making and policymaking.

This study will have far-reaching repercussions beyond surgery's short-term effects. Nutritional impairments following surgery may indicate systemic food, lifestyle, and healthcare concerns. These findings will highlight the necessity of interdisciplinary patient care by showing how hunger impacts surgical recovery. It will combine nutritional, surgical, and rehabilitative methods for optimal health. Finally, this study examines Nalanda Medical College & Hospital patients to fill the knowledge gap on preoperative nutrition and surgical results. This research aims to determine how general surgery patients' nutritional status affects their postoperative recovery to enhance surgical results, patient care, and clinical practice. To determine how pre-surgery nutrition impacts recovery. To assess general surgery patients' malnutrition rates. This study compares problems, hospital stay, and mortality in well-nourished versus impoverished patients. Non-well-nourished patients have worse post-surgery outcomes.

Study Design This study examines how pre-surgery nutrition affects general surgery outcomes. Retrospective cross-sectional study. The retrospective approach of this study is ideal for reviewing patient data to see if preoperative diets affect surgical outcomes. Due to its cross-sectional design, this study may evaluate a specified patient cohort at one time to see if dietary deficits affect surgical outcomes. Study Duration & Location The research would last 13 months at NMCH in Patna, Bihar, from October 2023 to November 2024. One of Bihar's largest tertiary care hospitals, NMCH treats a diverse patient population. In a resource-limited country where malnutrition is widespread among hospitalised patients, this government hospital with a substantial patient intake is ideal for studying preoperative nutritional status and surgical outcomes. Sample Size & Selection Criteria 100 general surgery patients who meet eligibility requirements will participate. A 100-person sample size was chosen to meet schedule constraints and collect adequate data for statistical analysis. Inclusion Criteria • Patients undergoing elective general surgery procedures. • Availability of preoperative nutritional assessment data, including BMI, serum albumin levels, and Nutritional Risk Screening (NRS-2002). • Age 18 years and above (adults only). Exclusion Criteria • Patients with incomplete medical records, particularly those lacking preoperative nutritional assessment data. • Pediatric patients (age <18 years) as their nutritional needs and surgical risks differ from those of adults. • Patients undergoing emergency surgery where preoperative nutritional assessment was not conducted. Data Collection This research will use PMCH's EHR and paper case sheets. For identifying a patient's weight: underweight, normal, overweight, or obese. If values are below 3.5 g/dL, this biochemical test is used to assess nutritional risk. Nutritional risk assessment utilising a validated technique that considers food consumption, weight loss, and sickness severity. Statistical Analysis The data we collect will be analysed using R or SPSS. A combination of descriptive and inferential statistical methods: We receive mean, standard deviation, and frequency distribution for continuous variables like body mass index, serum albumin, and hospital stay. We'll utilise percentages to summarise category aspects like SSI and related issues. A categorical variable can compare surgical complications in impoverished and well-nourished patients. To assess how pre-surgery nutrition affects post-surgery outcomes, controlled for age, comorbidities, and operation type. The results will be statistically significant if the probability value is less than 0.05. This strategy allows us to identify the dietary variables that raise the risk of poor surgical outcomes and make the case for nutritional assessments before surgeries.

Patient Demographics & Baseline Characteristics

Table 1: Patient Demographics and Baseline Characteristics

The study included 100 patients undergoing elective general surgery at Nalanda Medical College & Hospital (NMCH), Patna, and Bihar.

The demographic distribution of patients, including age, gender, comorbidities, and types of surgery performed, is summarized in Table 1.

The majority of patients (35%) were in the 31-50 years age group, followed by 30% in the 51-70 years group. The study had a higher proportion of male patients (60%) compared to females (40%). 30% of patients had diabetes mellitus, and 25% had hypertension, both of which are known to affect surgical recovery.

Gastrointestinal surgeries accounted for the highest proportion (40%) of procedures, followed by general surgeries (35%) and hepatobiliary surgeries (25%).

Preoperative Nutritional Status of Patients

Table 2: Preoperative Nutritional Status of Patients

The preoperative nutritional status of patients was evaluated using BMI, serum albumin levels, and NRS-2002 scores. The distribution is presented in Table 2. 33.3% of malnourished patients were underweight, compared to only 3.6% in the well-nourished group. Serum albumin levels were below 3.5 g/dL in 77.8% of malnourished patients, indicating poor nutritional status. 66.7% of malnourished patients had an NRS-2002 score ≥3, signifying a high nutritional risk.

Postoperative Outcomes Based on Nutritional Status

Table 3: Postoperative Outcomes in Well-Nourished vs. Malnourished Patients

(*Significance level p<0.05)

The impact of preoperative nutritional status on postoperative outcomes, including length of hospital stay (LOS), surgical site infections (SSI), postoperative complications, and mortality, is summarized in Table 3. The mean hospital stay was significantly longer in malnourished patients (9.2 days) compared to well-nourished patients (5.4 days, p<0.001), indicating that poor nutritional status was associated with delayed recovery. 44.4% of malnourished patients developed SSI, a much higher rate than 9.1% in well-nourished patients (p<0.001), highlighting an increased risk of infections. 66.7% of malnourished patients had postoperative complications, such as delayed wound healing, pneumonia, and sepsis, compared to only 18.2% in the well-nourished group (p<0.001), demonstrating the strong association between nutrition and postoperative recovery. Mortality was significantly higher in the malnourished group (11.1%) than in well-nourished patients (1.8%, p=0.04), reinforcing the importance of preoperative nutritional optimization.

Interpretation of Findings

This study supports prior findings relating preoperative hunger to poor surgical results. Malnourished individuals had higher hospital stays, SSIs, surgery complications, and mortality. These findings support the literature that hunger is a key risk factor for surgical failure. Malnutrition affects recovery by lowering immunity, slowing wound healing, and increasing infection risk. In the malnourished group, low serum albumin levels were more common, a sign of inadequate nutrition and greater risk of complications. Lack of albumin, which maintains oncotic pressure and immune responses, can cause tissue oedema, poor healing, and infection. This study found that malnourished patients have higher SSI rates (44.4% vs. 9.1% in well-nourished patients), supporting prior studies that suggest nutritional deficiencies weaken the immune system. Research results were confirmed. The large-scale meta-analysis by [13] and [14] provides one example. Malnourished patients had 2.5 times greater postoperative complications. [15] found that patients with Nutritional Risk Screening (NRS-2002) ratings of 3 or above had longer hospital stays and more problems. Our research supports these statements, emphasising the importance of early nutrition assessment and treatment after surgery.

Clinical Implications

According to the findings, evaluating and correcting nutritional disorders before surgery is crucial. Malnourished patients are more prone to develop issues, hence preoperative nutritional assessments should be done. The NRS-2002 and Subjective Global Assessment (SGA) are validated devices that may quickly and thoroughly assess a patient's nutritional status. Research shows that immunonutrition and protein-energy supplements improve surgical outcomes for malnourished patients. Perioperative nutritional treatment can reduce hospital stays and problems for high-risk surgical patients, according to research.

The European Society for Clinical Nutrition and Metabolism (ESPEN) recommends enteral or parenteral nutrition for 7-10 days before surgery for severely malnourished patients. This study suggests that clinicians should optimise preoperative nutrition with regimens, especially for high-risk patients. Interdisciplinary teams of surgeons, nutritionists, and anaesthesiologists improve nutritional management. Patient-specific dietary plans should be prioritised in postoperative treatment. These programmes should contain vitamin supplements, immunomodulatory formulations, and high-protein meals.

Limitations of the Study

Despite its promising outcomes, this study has several limitations. First, the study's retrospective approach increases selection bias and decreases causation power. Medical record inaccuracies or missing data may affect retrospective design outcomes. Second, the small sample size (n=100) prevents generalisation to a wider surgical population. Although the study provides useful insights, additional studies with a more diverse patient group could increase the evidentiary base. Third, there isn't enough long-term data on how hunger influenced recovery, readmissions, and survival. Future nutrition treatment studies should employ longer follow-ups to examine long-term effects.

Future Research Directions

This research should be expanded into multi-center investigations. This would make the results more reliable and transferable to various healthcare settings. A larger sample size would enable subgroup research by surgical procedure or patient demographics, increasing statistical power. Prospective research on how pre-surgical diets affect surgery outcomes are also needed. Randomised controlled trials (RCTs) comparing comprehensive nutritional support to regular preoperative care are needed to verify perioperative nutrition works. Studies on immunonutrition, micronutrient supplementation, enteral vs. parenteral nutrition, and others may yield more specific clinical management recommendations. Future research must examine gut bacteria's role in post-operative recovery given the expanding body of data relating gut health to immune function.

This study highlights the impact of pre-surgery food on post-surgery outcomes. Malnutrition increased postoperative complications, hospital stays, surgical site infections, and mortality, according to researchers. These findings emphasise the need of early malnutrition detection and management in surgery patients to improve recovery and reduce complications. Low BMI, high NRS-2002 scores, and low blood albumin levels were associated with poor surgical outcomes. These people had higher infections, poorer wound healing, and longer hospital stays. Regular preoperative nutritional examination should be part of surgical treatment since poor nutrition is strongly correlated with poor postoperative results. Preoperative nutrition optimisation may improve surgical protocols and patient outcomes, making this research therapeutically significant. This may include dietary advising, customised supplements, and risk assessment. Surgical teams, hospitals, and nutritionists must collaborate to develop and implement nutritional therapies. Despite its strengths, this study had drawbacks like a retrospective design, small sample size, and no long-term follow-up. These factors underline the need for more prospective, multi-center, and randomised controlled trials to evaluate nutritional interventions. Future studies should examine how preoperative malnutrition affects quality of life, functional recovery, and survival. Investigations into microbiome-based approaches, immunonutrition, and targeted nutritional therapy may improve surgical outcomes. Finally, this study shows that pre-surgical nutrition affects surgery outcomes. Surgical care should focus nutritional evaluations and customised therapies to improve patient outcomes, expedite recovery, and prevent complications. Nutritional optimisation before surgery reduces healthcare costs, improves hospital resource utilisation, and improves patient safety and well-being.

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