Development of Risk Prediction Model for Muscular Calf Vein Thrombosis with Acute Exacerbation of Chronic Obstructive Pulmonary Disease

Abstract

Purpose This study aims to establish a risk prediction model for muscular calf vein thrombosis (MCVT) in patients with acute exacerbation of chronic obstructive pulmonary disease (AECOPD). Methods The research sample consisted of 248 patients with AECOPD and all of them underwent vascular ultrasounds of both lower limbs in this retrospective study. Univariate analysis and multivariate logistic regression analysis were conducted on factors with significant group differences to screen for the independent risk factors of MCVT. A nomogram to predict the risk of MCVT was constructed and validated with bootstrap resampling. Results According to the exclusion criteria, 240 patients were included for analysis, divided into the MCVT group (n = 81) and the non-MCVT group (n = 159). Multivariate logistic regression analyses showed that hypertension, elevated MPV, reduced albumin (ALB), elevated D-dimer and bed rest ≥3 days were independent risk factors for MCVT in AECOPD. A nomogram model for predicting AECOPD with MCVT was established based on them. The area under the curve (AUC) of receiver operating characteristic (ROC) curve for the prediction model and the simplified Wells score was 0.784 (95% CI: 0.722–0.847) and 0.659 (95% CI: 0.583–0.735), respectively. The cut-off value and Youden index of prediction model were 0.248 and 0.454, respectively. At the same time, the sensitivity, specificity, positive predictive value, and negative predictive value of the prediction model were 85.9%, 59.5%, 84.6%, and 77.4%, respectively. The sensitivity and specificity of the simplified Wells score were 67.9% and 56.3%, respectively. Validation by the use of bootstrap resampling revealed optimal discrimination and calibration, and the decision analysis curve (DAC) suggested that this prediction model involved high clinical practicability. Conclusion We developed a nomogram that can predict the risk of MCVT for AECOPD patients. This model has the potential to assist clinicians in making treatment recommendations and formulating corresponding prevention measures.

Application of Acoustic Radiation Force Pulse Imaging Technology in the Evaluation of the Efficacy of Calf Intermuscular Vein Thrombosis

“…Underlying conditions such as malignant tumors, varicose veins, renal failure, and heart failure, along with highrisk factors like anticancer radiotherapy, chemotherapy, oral contraceptives, hormone replacement therapy, obesity, and smoking, can elevate the prevalence of MCVT [18,19]. MCVT often goes unnoticed due to mild and non-acute symptoms.…”

Risk factor analysis for early development of calf muscular vein thrombosis after thoracic surgery:a prospective observational study

“…Compared with other veins in the lower extremity, the veins in the calf muscles are more likely to develop thrombosis due to their extensive branches, small diameters, thin walls, few venous valves, and slow blood ow [2]. A previous study reported that in certain populations up to 91% of patients with DVT could have CMVT [3]. Although CMVT gradually disappears in most cases, there is a proportion of cases where CMVT progresses to DVT [4] or even pulmonary embolism (PE) [5, 6].…”