Evaluation of Neutrophil-Lymphocyte Ratios According to Gupta Perioperative Myocardial Infarction or Cardiac Arrest (MICA) Risk Index in Elderly Patients Undergoing Hip Surgery

Yıl 2023, Cilt: 13 Sayı: 5, 776 - 781, 30.09.2023

Bilge Banu Taşdemir Mecit Ali Kaynak Recep Altın Elif Doğan Bakı Özal Özcan Remziye Sıvacı

Öz

Background/Aims: Perioperative cardiac events are a leading cause of mortality after surgery. Consequently, risk stratification for perioperative myocardial ischemia and cardiac arrest has gained significant importance before surgery. The Gupta perioperative myocardial infarction or cardiac arrest (MICA) risk index provides a risk estimate for perioperative myocardial infarction or cardiac arrest. This study aimed to investigate the relationship between the MICA risk index and neutrophil-lymphocyte ratios (NLR) in elderly patients undergoing hip surgery.
Methods: The medical records of patients operated on for hip fracture surgery between 01.10.2021 and 30.04.2022 were retrospectively analyzed. Demographic data, comorbidities, clinical and laboratory characteristics, Neutrophil-to-Lymphocyte Ratio (NLR), and length of hospital stay were evaluated. Subsequently, MICA scores were computed. According to the MICA cardiac risk score, patients were categorized into two groups: a high-risk group (risk greater than 1%) and a low-risk group, and the preoperative NLR of these two groups was compared.
Results: Results: The study included 83 patients aged 65 and older out of a total of 191 patients who underwent hip fracture surgery. The patients were assessed based on their MICA cardiac risk scores, and they were categorized into two groups: those with a MICA score<1 (n=30) and those with a MICA score≥1 (n=53). Gender and body mass index (BMI) showed no significant differences between the groups. However, there were statistically significant variations observed in terms of age (p<0.001), the American Society of Anaesthesiologists (ASA) classification (p<0.001), and comorbidities (p=0.042).
Patients with a MICA score≥1 exhibited significant differences when compared to those with a MICA score<1 in terms of postoperative intensive care unit admission (p=0.003), complication rate (p<0.001), mortality (p=0.004), and length of hospital stay (p=0.025).
Furthermore, there was a positive correlation between the MICA score and preoperative NLR (Neutrophil-to-Lymphocyte Ratio) (p=0.619, r=0.055), although no significant difference was found between the two groups (p=0.486). While the NLR was higher in patients with adverse outcomes (exitus) compared to those without, this difference did not reach statistical significance (p=0.165).
Conclusions: A comprehensive multidisciplinary approach is crucial for assessing preoperative risk factors and devising appropriate treatment strategies in elderly patients undergoing hip surgery. The MICA score can serve as a valuable tool for predicting perioperative risk in this patient population. Our study revealed no significant association between preoperative NLR and the MICA cardiac risk score.

Anahtar Kelimeler

MICA score, hip fracture surgery, NLR, perioperative period, elderly patient

Kalça Operasyonu Yapılan Yaşlı Hastalarda Gupta Perioperatif Miyokard Enfarktüsü veya Kardiyak Arrest (MICA) Risk İndeksine Göre Nötrofil-Lenfosit Oranlarının Değerlendirilmesi

Öz

Amaç: Perioperatif kardiyak olaylar, cerrahi sonrası önde gelen ölüm nedenlerindendir. Bu nedenle, perioperatif miyokart iskemisi ve kardiyak arrest için risk sınıflaması, cerrahi öncesi önemli hale gelmiştir. Gupta perioperatif miyokard enfarktüsü veya kardiyak arrest (MICA) risk indeksi, perioperatif miyokard enfarktüsü veya kalp durması için bir risk tahmini sağlar. Bu çalışmanın amacı, kalça operasyonu geçiren yaşlı hastalarda MICA risk indeksi ve nötrofil lenfosit oranları (NLR) arasındaki ilişkiyi araştırmaktır.
Gereç ve Yöntem: Kalça kırığı nedeniyle 01.10.2021 ve 30.04.2022 tarihleri arasında opere edilen hastaların dosyaları retrospektif olarak tarandı. Hastaların demografik bulguları, komorbiditeleri, klinik ve laboratuvar özellikleri, NLR’i, hastanede kalış süreleri değerlendirildi. MICA skorları hesaplandı. MICA kardiyak risk skoruna göre yüksek riskli grup (%1 ‘in üzeri yüksek risk) ve düşük riskli grup olarak 2 gruba ayrıldı ve bu iki grup hastaların preoperatif NLR’i karşılaştırıldı.
Bulgular: Kalça kırığı nedeniyle opere edilen 191 hastadan 65 yaş ve üzeri 83 hasta çalışmaya dahil edildi. Hastaların MICA kardiyak risk skorları hesaplanarak, MICA skoru<1 olanlar (n=30) ve MICA skoru≥1 olanlar (n=53) olarak 2’ye ayrıldı. Gruplar arasında hastaların cinsiyetleri, vücut kitle indeksleri (VKİ) açısından farklılık gözlenmezken, yaşları (p<0.001), Amerikan Anestezistler Derneği (ASA) sınıflamaları (p<0.001) ve ek hastalık açısından anlamlı farklılık mevcuttu (p=0.042). MICA skoru≥1 olan hastaların MICA skoru<1 olan hastalara göre postoperatif yoğun bakıma çıkış (p=0.003), komplikasyon görülme oranı (p<0.001), mortalite (p=0.004)ve hastane kalış süresi (p=0.025) açısından anlamlı farklılık mevcuttu. Hastaların MICA skoru ile preoperatif NLR arasında (p=0.619, r=0.055) pozitif yönlü korelasyon gözlenirken gruplar arasında anlamlı farklılık gözlenmemiştir (p=0.486). Mortalite açısından baktığımızdan exitus olanlarda NLR, olmayanlara göre daha yüksek çıksa da anlamlı farklılık gözlenmemiştir (p=0.165).
Sonuç: Kalça operasyonu olan yaşlı hastalarda preoperatif risk faktörlerinin belirlenmesi ve bu riske yönelik tedavi planlamasında multidisipliner yaklaşım önemlidir. Bu hastalarda perioperatif riski tahmin etmek için MICA skoru kullanılabilir. Çalışmamızda preoperatif NLR’nın MICA kardiyak risk skoru ile ilişkili olmadığı sonucunu bulduk.

Anahtar Kelimeler

MICA skoru, kalça kırığı cerrahisi, NLR, perioperatif dönem, yaşlı hasta

Kaynakça

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