Trauma remains a major public health challenge across the globe, serving as a leading cause of mortality, severe disability, and economic loss among young and active populations. Within the spectrum of bodily trauma, thoracic injuries are particularly critical because the chest cavity encloses vital cardiovascular and pulmonary structures. Blunt chest trauma (BCT) accounts for nearly 85–90% of civilian thoracic injuries, most frequently resulting from motor vehicle collisions, fall from height, industrial accidents, and direct physical assault. Evaluating the severity of blunt chest trauma requires assessing both anatomical skeletal damage and intrathoracic physiological compromise. Direct mechanical force transferred to the chest cage can cause rib, sternal, or scapular fractures, while decelerative and compressive forces disrupt underlying lung parenchyma, pleural spaces, and mediastinal structures. The clinical spectrum varies widely from mild chest wall contusions to life-threatening conditions such as flail chest, pulmonary contusions, tension pneumothorax, and massive hemothorax. Severe pain and chest wall instability impair ventilatory mechanics, leading to chest wall splinting, hypoventilation, retained secretions, atelectasis, and respiratory failure.

Study Design and Clinical Setting This prospective descriptive observational study was conducted in the Department of General Surgery at Vilasrao Deshmukh Government Medical College and Hospital, Latur, Maharashtra, India. The study spanned an 18-month period following clearance from the Institutional Ethics Committee and formal study protocol approval. Patient Selection & Eligibility Criteria A sample of 60 consecutive patients presenting with blunt chest trauma was enrolled. Inclusion criteria comprised: (1) patients of any age or sex presenting to the emergency casualty, outpatient department, or inpatient wards with confirmed blunt thoracic trauma; (2) patients requiring hospital admission for clinical evaluation, imaging, or management; and (3) patients or legal guardians providing informed written consent. Exclusion criteria were: (1) penetrating thoracic injuries; (2) minor chest wall trauma not requiring admission; (3) patients brought dead or expiring prior to completing baseline investigations; (4) patients leaving against medical advice before treatment completion; and (5) incomplete medical records. Clinical Resuscitation Protocol Patient evaluation adhered strictly to Advanced Trauma Life Support (ATLS) protocols. Primary survey focused on securing airway patency, assuring adequate ventilation, fluid resuscitation for shock, baseline GCS assessment, and full body exposure. Life-threatening thoracic conditions (tension pneumothorax, massive hemothorax, flail segment) were identified and managed immediately at the bedside. Following initial resuscitation, a detailed secondary survey recorded injury mechanism, time interval to arrival, presenting symptoms, comorbid illnesses, and associated extra-thoracic injuries. Diagnostic Modalities & Severity Assessment All patients underwent standard 12-lead electrocardiography (ECG) and upright/supine posteroanterior chest radiography (CXR). Extended Focused Assessment with Sonography for Trauma (EFAST) was routinely performed in the emergency room to detect pericardial fluid, pneumothorax, hemothorax, and free intra-abdominal fluid. Computed Tomography (CT) of the thorax was selectively performed in stable patients with high-energy mechanisms, severe symptoms, abnormal CXR, or suspected occult parenchymal/mediastinal trauma. Management Protocol Management followed standardized institutional protocols. Non-operative conservative management included oxygen therapy, multimodal analgesia (systemic NSAIDs, opioids, regional blocks), IV fluid resuscitation, empiric antibiotics when indicated, chest physiotherapy, and incentive spirometry. Intercostal drainage (ICD) tubes were inserted for symptomatic pneumothorax, moderate-to-large hemothorax, or hemopneumothorax. ICU admission and mechanical ventilation were initiated for severe hypoxia (SpO2 < 90%), extensive pulmonary contusions, flail chest, hemodynamic instability, or associated severe head injury. Statistical Analysis Data were compiled in Microsoft Excel and analyzed using IBM SPSS Statistics. Categorical data were presented as frequencies and percentages. Continuous variables were expressed as mean ± SD, median, and ranges. Categorical associations were tested using Chi-square or Fisher's exact tests. Continuous parameters across subgroups were compared using Student's t-test. A p-value < 0.05 was considered statistically significant.

Table 1: Demographic Profile, Trauma Mechanisms, and Admission Clinical Parameters (N = 60) Parameter Category Sub-category / Clinical Metric Frequency (n) Percentage (%) / Mean ± SD Demographics Mean Age (years) - 38.93 ± 1 5.87 (Range: 8–71 ) Sex: Male / Female 45 / 1 5 75.0% / 25.0% (M:F = 3:1 ) Peak Age Group (31 –40 years) 1 7 28.3% Mechanism of Trauma Road Traffic Accident (RTA) 35 58.3% Fall from Height 1 0 1 6.7% Assault / Physical Blow 6 1 0.0% Demographics and Occupational Distribution Among the 60 patients, the mean age was 38.93 ± 15.87 years (median: 37.0 years). Age distribution revealed a concentration in young and middle-aged adults: ≤20 years in 8.3% (n=5), 21–30 years in 23.3% (n=14), 31–40 years in 28.3% (n=17), 41–50 years in 18.3% (n=11), 51–60 years in 11.7% (n=7), and >60 years in 10.0% (n=6). Patients aged 21–40 years accounted for 51.6% of all admissions. Males predominated significantly (75.0%, n=45; M:F ratio 3:1). Occupational breakdown showed that manual laborers (18.3%, n=11) and students (15.0%, n=9) formed the largest groups, followed by retirees (13.3%), farmers (10.0%), shopkeepers (10.0%), businesspersons (10.0%), drivers (8.3%), service personnel (8.3%), and housewives (6.7%). Trauma Mechanisms and Symptomatology Road traffic accidents were the primary mechanism of trauma (58.3%, n=35), followed by falls from height (16.7%, n=10), assault (10.0%, n=6), animal-inflicted injuries (6.7%, n=4), direct hit by blunt objects (5.0%, n=3), and occupational crush trauma (3.3%, n=2). Alcohol intake at trauma onset was documented in 16.7% (n=10) of patients, while 25.0% (n=15) had a smoking history. Mean time from trauma to hospital presentation was 16.57 ± 14.93 hours (median: 11.0 hours); 38.3% (n=23) presented within 6 hours, 25.0% (n=15) between 7–12 hours, and 20.0% (n=12) presented after >24 hours. Chest pain was the universal primary complaint (88.3%, n=53), followed by breathlessness (50.0%, n=30), abdominal pain (18.3%, n=11), cough (15.0%, n=9), altered sensorium (11.7%, n=7), vomiting (8.3%, n=5), and hemoptysis (5.0%, n=3). Physical examination demonstrated localized chest tenderness in 90.0% (n=54), reduced chest movement in 71.7% (n=43), abrasions/contusions in 66.7% (n=40), rib crepitus in 43.3% (n=26), subcutaneous emphysema in 20.0% (n=12), and tracheal deviation in 5.0% (n=3). Associated Extra-Thoracic Polytrauma Concomitant extra-thoracic injuries were frequent: associated head injury was present in 30.0% (n=18), abdominal organ injury in 21.7% (n=13), extremity fractures in 10.0% (n=6), and spinal fracture in 1.7% (n=1). Table 2: Spectrum of Thoracic Injuries Identified on Clinical and Radiological Evaluation (N = 60) Thoracic Injury Category Diagnostic Identification Method Frequency (n) Percentage (%) Rib Fractures (Any) Chest Radiograph / CT Thorax 33 55.0% Single Rib Fracture Chest Radiograph / CT Thorax 6 1 0.0% Multiple Rib Fractures (≥ 2 ribs) Chest Radiograph / CT Thorax 27 45.0% Flail Chest Segment Clinical Examination / CT 1 1 .7% Subcutaneous Emphysema Clinical / CXR / CT Thorax 13 21 .7% Pneumothorax CXR / EFAST / CT Thorax 11 1 8.3% Pulmonary Contusion CT Thorax / Chest Radiograph 1 0 1 6.7% Pleural Effusion USG / CXR / CT Thorax 1 0 1 6.7% Hemothorax CXR / EFAST / CT Thorax 6 1 0.0% Fractured Sternum CT Thorax / Lateral CXR 3 5.0% Anatomical Injury Spectrum & Fracture Burden Rib fractures occurred in 33 patients (55.0%), with multiple rib fractures (≥2 ribs) present in 27 patients (45.0%). Fracture burden distribution was: 0 ribs in 27 (45.0%), 1 rib in 6 (10.0%), 2 ribs in 8 (13.3%), 3 ribs in 8 (13.3%), 4 ribs in 5 (8.3%), 5 ribs in 3 (5.0%), and 6 ribs in 3 (5.0%). Mean rib fracture count was 1.65 ± 1.89 per patient. Selective CT thorax (performed in 78.3%, n=47) identified pulmonary contusions in 16.7% (n=10), occult pneumothorax in 18.3% (n=11), and sternal fractures in 5.0% (n=3) that were missed on supine radiographs. Therapeutic Management Modalities Multimodal analgesia was administered to 100% of patients (n=60). Oxygen supplementation was provided to 90.0% (n=54), chest physiotherapy and incentive spirometry to 85.0% (n=51), empiric antibiotics to 66.7% (n=40), and IV fluid therapy to 60.0% (n=36). Non-operative conservative management was successful in 78.3% (n=47) of patients. Tube thoracostomy (ICD insertion) was required in 12 patients (20.0%) for persistent pneumothorax, hemothorax, or hemopneumothorax. Right- and left-sided chest tubes were placed in equal proportions (n=6 each). Mean initial ICD blood/fluid drainage was 318.33 ± 401.52 mL (median: 50.0 mL), and mean tube duration was 7.58 ± 1.16 days (median: 8.0 days). Overall, 17 patients (28.3%) required ICU admission, 3 patients (5.0%) required mechanical ventilation, and 7 patients (11.7%) underwent surgical intervention for associated injuries or chest wall instability. In-Hospital Complications & Short-Term Outcomes In-hospital complications were primarily pulmonary: respiratory distress in 31.7% (n=19), acute respiratory failure in 10.0% (n=6), hospital-acquired pneumonia in 5.0% (n=3), and lobar atelectasis in 5.0% (n=3). No cases of empyema, persistent air leak, sepsis, or death occurred. Mean length of hospital stay was 6.70 ± 4.84 days (range: 2–20 days; median: 5.0 days). Stay distribution demonstrated: ≤3 days in 28.3% (n=17), 4–7 days in 40.0% (n=24), 8–14 days in 21.7% (n=13), and >14 days in 10.0% (n=6). Prolonged stay (>7 days) occurred in 31.7% (n=19). At discharge, 91.7% (n=55) were stable, 3.3% (n=2) improved, and 5.0% (n=3) were transferred for specialized rehabilitation. Table 3. Bivariate Subgroup Analysis of Determinants for ICU Admission and Prolonged Hospital Stay (>7 Days) Clinical Severity Parameter Subgroup Category ICU Admission, n (%) p-value (Fisher’s exact/χ²) Prolonged Stay >7 Days, n (%) p-value (Fisher’s exact/χ²) Admission Hypoxia (SpO₂ <90%) Yes (n=10) 10 (100.0%) p < 0.001* 6 (60.0%) p = 0.071 No (n=50) 7 /50 (14.0%) 13/50 (26.0%) Pulmonary Contusion Present (n=10) 7 /10 (70.0%) p = 0.003* 6 (60.0%) p = 0.071 Absent (n=50) 10 /50 (20.0%) 13 / 50 (26.0%) Intercostal Drainage (ICD) Inserted (n=12) — — 12 / 12 (100.0%) p < 0.001* Not inserted (n=48) — 7 / 48 (14.6%) ICU Admission Status Admitted (n=17) — — 12/17 (70.6%) p < 0.001* Not admitted (n=43) — 7 /43 (16.3%) In-hospital Complications Complications No - (n=24) — — 1 3 / 24 (54.2%) p = 0.003* Complications No - (n=36) — 6 / 36 (1 6.7%) Statistical Determinants of Short-Term Outcomes Bivariate statistical analysis identified key determinants of outcome. Admission hypoxia (SpO2 < 90%) was a strong predictor of ICU admission: 100% of hypoxic patients required ICU care versus 14.0% of non-hypoxic patients (p < 0.001). Pulmonary contusion significantly increased ICU admission rates (70.0% vs. 20.0%, p = 0.003). Student's t-test demonstrated significantly longer hospital stay in patients requiring ICD insertion (14.25 ± 4.18 vs. 4.81 ± 2.68 days, p < 0.001), patients admitted to ICU (11.59 ± 5.28 vs. 4.77 ± 2.97 days, p < 0.001), patients developing complications (9.21 ± 5.56 vs. 5.03 ± 3.47 days, p < 0.001), and patients with pulmonary contusion (8.90 ± 4.23 vs. 6.26 ± 4.88 days, p = 0.042). Isolated rib fracture presence without contusion did not independently prolong hospital stay (p = 0.524).

Evaluating injury severity, selecting appropriate management, and optimizing short-term outcomes in blunt chest trauma require a thorough understanding of trauma mechanics and cardiopulmonary pathophysiology. Our prospective evaluation of 60 patients provides meaningful evidence regarding injury patterns and resource utilization in a tertiary care setting. Demographic Vulnerability and Trauma Mechanisms The demographic findings—mean age of 38.93 years and a 3:1 male-to-female ratio—reflect the heightened vulnerability of young, active adult males. Peak incidence occurred in the 21–40 years age group (51.6%), consistent with Indian and global trauma literature. Road traffic accidents accounted for 58.3% of trauma cases, matching reports by Narayanan et al., Gupta et al., Walia et al., and Singh et al., who identified RTAs as the dominant mechanism responsible for 50–65% of blunt chest injuries. Manual laborers and students formed over one-third of our cohort, underscoring the social and economic impact of trauma-induced disability. Diagnostic Accuracy: Plain Radiography vs. CT Thorax Plain chest radiography remains the initial screening modality in trauma bays; however, its diagnostic sensitivity for subtle parenchymal or pleural injuries is limited, especially in supine views. In our study, CT thorax was performed in 78.3% of cases and successfully detected occult pneumothoraces, sternal fractures (5.0%), and small pulmonary contusions (16.7%) that were under-diagnosed on initial radiographs. This diagnostic superiority aligns with findings by Exadaktylos et al. and Traub et al., supporting selective CT utilization in stable patients to guide proactive ICU triage and chest tube management. Chest Wall Mechanics and Multimodal Analgesia Rib fractures were diagnosed in 55.0% of patients, with 45.0% sustaining multiple fractures. Rib fractures serve as major indicators of force transmission to underlying tissues. As shown by Ziegler & Agarwal and Sirmali et al., severe chest wall pain induces voluntary splinting, reducing tidal volume and impairing secretion clearance. In our cohort, universal multimodal analgesia (100%) paired with chest physiotherapy (85.0%) helped prevent secondary pulmonary collapse, resulting in low rates of hospital-acquired pneumonia (5.0%) and zero post-traumatic empyema. Pulmonary Contusions and Hypoxia as Outcome Drivers Pulmonary contusion (16.7%) represented a primary parenchymal pathology driving acute respiratory compromise. Contused lung tissue develops progressive edema and alveolar hemorrhage over 24–48 hours, as described by Ganie et al. and Rendeki & Molnár. In our study, pulmonary contusion correlated significantly with ICU admission (70.0% vs. 20.0%, p = 0.003) and prolonged hospital stay (8.90 vs. 6.26 days, p = 0.042). Admission hypoxia (SpO2 < 90%) was an exceptional predictor of severe outcome, exhibiting a 100% association with ICU requirement (p < 0.001). DISCUSSION (CONTINUED) Intercostal tube thoracostomy was required in 20.0% of patients for pleural drainage. Standardized insertion technique, underwater seal monitoring, and early mobilization resulted in complete resolution of pneumothoraces and hemothoraces without empyema or persistent air leaks. However, ICD placement significantly extended hospital stay (14.25 vs. 4.81 days, p < 0.001), reflecting underlying pleural severity and required tube duration (mean 7.58 days). Overall non-operative conservative management was effective in 78.3% of cases, reaffirming that structured ATLS protocols, multimodal analgesia, early pulse oximetry, and selective chest drainage achieve excellent short-term clinical outcomes without open surgery. Key Clinical Takeaways Admission Hypoxia (SpO2 < 90%): Strongest immediate bedside predictor of ICU admission (100% sensitivity). CT Thorax Evaluation: Crucial for detecting occult pulmonary contusions and complex rib patterns missed on CXR. Multimodal Analgesia & Physiotherapy: Primary protective strategy against atelectasis, pneumonia, and respiratory distress. ICD Insertion & Contusions: Primary clinical determinants of prolonged hospital stay (> 7 days). STRENGTHS AND LIMITATIONS Strengths: Prospective study design; real-time recording of clinical, radiological, and management metrics; objective statistical evaluation of determinants for ICU care and length of stay. Limitations: Single-center tertiary hospital setting with modest sample size (N = 60); exclusion of pre-hospital deaths or patients expiring prior to workup completion; lack of long-term post-discharge spirometric testing or chronic pain evaluation.

Blunt chest trauma in developing regions predominantly affects young adult males exposed to road traffic accidents. Non-operative management integrating multimodal analgesia, oxygen therapy, chest physiotherapy, and selective intercostal tube drainage achieves excellent short-term survival (100% in this cohort). Admission hypoxia (SpO2 < 90%) and CT-diagnosed pulmonary contusions serve as key indicators for ICU triage. Intercostal drainage requirement, ICU admission, and parenchymal contusions are the principal drivers of prolonged hospitalization. Standardized trauma protocols emphasizing rapid resuscitation, liberal CT imaging, aggressive pain relief, and close respiratory monitoring are vital to minimize complications and optimize short-term outcomes.

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