American journal of cardiovascular disease最新文献

{"title":"Gender in post-cardiac transplant patients has no effect on the occurrence of death, major cardiovascular events or development of cardiac allograft vasculopathy.","authors":"Nishant Satapathy, Mohammad Reza Movahed","doi":"10.62347/LPLW4777","DOIUrl":"10.62347/LPLW4777","url":null,"abstract":"<p><strong>Objectives: </strong>The effect of gender on outcome in post-cardiac transplant morbidity and mortality including the occurrence of transplant vasculopathy is not well established. The goal of this study was to evaluate adverse post-transplant outcomes based on gender with a focus on cardiac allograft vasculopathy (CAV).</p><p><strong>Methods: </strong>Using our post-transplant database at the University of Arizona, the effect of gender after heart transplantation on death, major adverse cardiac events (MACE defined as the combined occurrence of myocardial infarction, percutaneous coronary intervention, coronary bypass surgery, re-transplantation, and death) and the occurrence of CAV was evaluated retrospectively over 3 years.</p><p><strong>Results: </strong>A total of 149 patients were evaluated in our database. Over the study period after the first year post-transplantation, a total of 4,7% deaths occurred. There were no differences in death between males and females (4.3% vs 6.1%, p = ns). MACE occurred in similar degrees between males and females (7.8% vs 9.1%, p = ns). Furthermore, the occurrence of an abnormal coronary angiogram or significant intima thickening seen during intracoronary ultrasound studies was similar between the genders for every year studied.</p><p><strong>Conclusions: </strong>Gender does not effect on the occurrence of CAV at any year's post-cardiac transplantation. Furthermore, it has no effect on MACE and mortality.</p>","PeriodicalId":7427,"journal":{"name":"American journal of cardiovascular disease","volume":"15 2","pages":"115-122"},"PeriodicalIF":1.3,"publicationDate":"2025-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12089021/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144118578","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The impacts of armed conflict on outcomes of coronary angiography: report from Sudan's hot war zone 2023-2024.","authors":"Eldisugi Hassan Mohammed Humida, Salah Mohamed Ibrahim Mohamed, Abdelsalam Mohamed Hamad Elfaki, Khalid Me Eltalib, Amal Khalil Yousif Mohammed, Rayan Eissa Elbadwi Alhaj, Hussain Gadelkarim Ahmed","doi":"10.62347/IJAI8338","DOIUrl":"10.62347/IJAI8338","url":null,"abstract":"<p><strong>Objectives: </strong>Coronary angiography and emergency coronary revascularizations are critical for decreasing morbidity and mortality linked to coronary artery disease. Establishing and maintaining this service in armed conflict and on the battlefield poses challenges; however, it remains achievable. This study aimed to evaluate the results of coronary angiography in Sudan amid the armed conflict of 2023-2024.</p><p><strong>Methods: </strong>This study utilized a retrospective descriptive analysis conducted at El-Obeid International Hospital (Aldaman) in North Kordofan State, Sudan. Patient data was obtained from the hospital for the period spanning April 15, 2023, to April 30, 2024.</p><p><strong>Results: </strong>Out of 314 diagnostic coronary angiograms, 32% had PCI with DES implantation, 18% showed normal coronary arteries, and the other 50% were treated with medication and advice from heart surgeons (CTC). Among the 100 patients who underwent PCI, 64% were male and 36% were female. The predominant age group was 50-59 years, succeeded by 60-69 years, under 50 years, and over 60 years, with incidence rates of 30%, 29.9%, 20.3%, and 18.2%, respectively.</p><p><strong>Conclusions: </strong>The offering of cardiac catheterization laboratory services amid armed conflict poses challenges but is nonetheless feasible. Despite the tragedy, constrained resources, and the impact of wartime conditions, our findings were consistent with prior reports both locally and globally.</p>","PeriodicalId":7427,"journal":{"name":"American journal of cardiovascular disease","volume":"15 2","pages":"131-138"},"PeriodicalIF":1.3,"publicationDate":"2025-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12089026/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144118596","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Percutaneous coronary intervention in elderly patients: clinical benefits and challenges from single center experience.","authors":"Ani A Rapyan, Armine S Chopikyan, Zinaida T Jndoyan, Ani R Tavaratsyan, Ani S Kocharyan, Shant H Mahrokhian, Hamayak S Sisakian","doi":"10.62347/DGQV8894","DOIUrl":"10.62347/DGQV8894","url":null,"abstract":"<p><strong>Objectives: </strong>Elderly patients who present with acute myocardial infarction are at increased risk for adverse outcomes owing to higher comorbidity burden and complicated coronary anatomy. We evaluated the three-year outcomes following coronary revascularization compared to conservative management among elderly patients presenting with acute myocardial infarction.</p><p><strong>Methods: </strong>155 patients over 75 years of age who were admitted for acute myocardial infarction underwent invasive treatment with coronary angioplasty (n=58) or only medical treatment (n=97). The Kaplan-Meier log rank test was used to compare 3-year survival and rehospitalization probability and the Mantel-Cox log rank test was used to compare mean survival time between groups.</p><p><strong>Results: </strong>In the Invasive treatment group (ITG) cohort, 3-year survival probability was 74.1% as compared to 29.9% in the Conservative treatment group (CTG) cohort (P<0.001). Mean survival time at 3 years of follow-up was 31.50 (95% CI 29.35-33.65) months among ITG patients versus 24.65 (95% CI 22.71-26.59) months among CTG patients (P<0.001). Mean time to rehospitalization at 3 years was 34.05 (95% CI 32.37-35.72) in the ITG cohort compared to 30.03 (95% CI 28.13-31.93) in the CTG cohort (P=0.004).</p><p><strong>Conclusion: </strong>Coronary revascularization among elderly patients with acute myocardial infarction reduces both all-cause mortality and cardiovascular events at 3-year follow-up. However, rates of rehospitalizations remain statistically similar between groups. Moreover, invasive treatment imparted improved rehospitalization probability compared to conservative treatment. This observation can be partially explained by a reduction in the frequency of myocardial infarction among those who underwent invasive treatment. While a thorough clinical assessment is required prior to treatment determination among elderly patients with acute myocardial infarction, coronary revascularization should be strongly considered as an intervention that likely improves overall survival probability.</p>","PeriodicalId":7427,"journal":{"name":"American journal of cardiovascular disease","volume":"15 2","pages":"123-130"},"PeriodicalIF":1.3,"publicationDate":"2025-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12089024/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144118593","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Artificial intelligence for Brugada syndrome diagnosis and gene variants interpretation.","authors":"Mobina Sahebnasagh, Mohammad Hadi Farjoo","doi":"10.62347/YQHQ1079","DOIUrl":"10.62347/YQHQ1079","url":null,"abstract":"<p><p>Brugada Syndrome (BrS) is a hereditary cardiac condition associated with an elevated risk of lethal arrhythmias, making precise and prompt diagnosis vital to prevent life-threatening outcomes. The diagnosis of BrS is challenging due to the requirement of invasive drug challenge tests, limited human visual capacity to detect subtle electrocardiogram (ECG) patterns, and the transient nature of the disease. Artificial intelligence (AI) can detect almost all patterns of BrS in ECG, some of which are even beyond the capability of expert eyes. AI is subcategorized into several models, with deep learning being considered the most beneficial, boasting its highest accuracy among the other models. With the capability to discriminate subtle data and analyze extensive datasets, AI has achieved higher accuracy, sensitivity, and specificity compared to trained cardiologists. Meanwhile, AI proficiency in managing complex data enables us to discover unclassified genetic variants. AI can also analyze data extracted from induced pluripotent stem cell-derived cardiomyocytes to distinguish BrS from other inherited cardiac arrhythmias. The aim of this study is to present a synopsis of the evolution of various algorithms of artificial intelligence utilized in the diagnosis of BrS and compare their diagnostic abilities to trained cardiologists. In addition, the application of AI for classification of BrS gene variants is also briefly discussed.</p>","PeriodicalId":7427,"journal":{"name":"American journal of cardiovascular disease","volume":"15 1","pages":"1-12"},"PeriodicalIF":1.4,"publicationDate":"2025-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11928888/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143690857","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Metabolic intervention with trimetazidine improves intracardiac hemodynamics and reduces re-hospitalizations in patients with advanced heart failure.","authors":"Hamayak S Sisakian, Nina A Muradyan, Anna V Babayan, Lilit A Sargsyan, Sama A Shamyar, Armine S Chopikyan, Syuzanna A Shahnazaryan","doi":"10.62347/ASXF2065","DOIUrl":"10.62347/ASXF2065","url":null,"abstract":"<p><strong>Objectives: </strong>We tested whether management with metabolic cytoprotective and antiischemic agent trimetazidine may reduce readmissions in advanced heart failure (HF) patients through the possible improvement of left ventricular ejection fraction (LV EF) and filling pressure.</p><p><strong>Methods: </strong>This was a single-center prospective open-label study. The study population included initially 40 patients with advanced HF and EF <30%, NYHA III-IV functional class, significant restriction of physical activity and at least 1 hospitalization during the last 12 months. After discharge patients were assigned to additional treatment with trimetazidine 80 mg/daily dose (20 patients) or standard guideline-based pharmacological therapy (20 patients). After enrollment patients underwent a total of four outpatient clinical and echocardiographic examinations (baseline before discharge, 2 weeks, 1, 3 and 6 months after the discharge). The echocardiographic assessment of EF and LV filling pressure by Tissue Doppler were performed blindly.</p><p><strong>Results: </strong>At 6 months, trimetazidine-treated patients had an improvement of LV EF (from 23.7% to 25%) as compared to controls (from 22.5% to 22.6%). Tissue Doppler study showed a decrease of LV filling pressure in trimetazidine treated group from 15.1 at baseline to 13.7 after 6 months of treatment. In the control group, LV filling pressure remained unchanged (from 16.78 to 16.7) (P<0.001). The rate of hospitalizations for cardiovascular causes was reduced at 6 months (83.3% vs 70.0%).</p><p><strong>Conclusions: </strong>Treatment with trimetazidine 80 mg/daily in addition to standard guideline-based therapy for 6-months decreased hospitalization, improved systolic function and LV filling pressure in advanced HF patients.</p>","PeriodicalId":7427,"journal":{"name":"American journal of cardiovascular disease","volume":"15 1","pages":"13-20"},"PeriodicalIF":1.3,"publicationDate":"2025-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11928887/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143690871","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Alternating between exit sites of retrograde slow pathway during fast-slow atrioventricular nodal reentrant tachycardia: case report.","authors":"Mihoko Kawabata, Yasuhiro Shirai, Tatsuaki Kamata, Tomoyuki Kawashima, Ryo Yonai, Kaoru Okishige, Kenzo Hirao","doi":"10.62347/XMJR4018","DOIUrl":"10.62347/XMJR4018","url":null,"abstract":"<p><p>We report a case of a 57-year-old male with narrow QRS tachycardia exhibiting the alternance of the cycle length. Differential diagnoses include orthodromic atrioventricular reciprocating tachycardia with alternating antegrade atrioventricular (AV) nodal pathways, atrioventricular nodal re-entrant tachycardia (AVNRT) with alternating AV nodal pathways, and atrial tachycardia with alternating antegrade AV nodal pathways or with Wenckebach periodicity. In electrophysiological study the tachycardia showed alternance in the retrograde atrial conduction sequence and the cycle length. The alternation was caused by that of the HA intervals, between the shorter HA interval with the earliest atrial activation recorded in coronary sinus (CS), and the longer HA interval with that in His bundle region. The tachycardia was diagnosed with fast-slow form of AVNRT exhibiting the alternance of the earliest atrial activation sites. Electroanatomical 3D mapping further revealed that the exit site of retrograde slow pathway (SP) alternated between the left inferior extension (LIE) inside the CS, and the right inferior extension (RIE) in the posterior tricuspid annulus although among conventional electrode catheters the earliest site was the His bundle region. After ablation of the exit site of LIE, the alternation disappeared and fast-slow AVNRT showing a uniform retrograde atrial activation for which the earliest atrial activation site was the exit of RIE sustained. A single application of ablation at this point was insufficient, thereafter conventional SP ablation was added. Then, the ventriculoatrial conduction disappeared and no tachycardia was inducible even with isoproterenol administration. This case is followed by a review of the literature.</p>","PeriodicalId":7427,"journal":{"name":"American journal of cardiovascular disease","volume":"15 1","pages":"39-47"},"PeriodicalIF":1.3,"publicationDate":"2025-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11928883/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143690852","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Gender specific echocardiographic prevalence of valvular stenosis and regurgitations in a large inpatient database of 24,265 patients.","authors":"Mohammad Reza Movahed, Ashkan Bahrami, Reza Eshraghi","doi":"10.62347/HYOC9461","DOIUrl":"10.62347/HYOC9461","url":null,"abstract":"<p><strong>Introduction: </strong>Prevalence of different valvular pathologies has not been reported in female and male patients in large population-based studies. The goal of this study was to report the gender-specific prevalence of various valvular pathologies.</p><p><strong>Methods: </strong>We retrospectively analyzed 24,265 echocardiograms performed between 1984 and 1998. The prevalence of mitral regurgitation (MR) aortic valve regurgitation (AR) and stenosis (AS), and tricuspid regurgitation (TR) were calculated in female and male patients.</p><p><strong>Results: </strong>Echocardiograms were performed on 12,926 (53%) female and 11,339 (47%) male patients. Gender-specific echocardiographic prevalence of different valvular abnormalities was as follows: Prevalence of mitral regurgitations was similar in women and men (25% vs 24.7%). Aortic regurgitation was higher in males (5.5 vs 14.9%, P < 0.001). Aortic stenosis prevalence was similar between both genders (2.1 vs 2.3%). Tricuspid valve regurgitations were slightly higher in females (18.5 vs 16.7%, P < 0.001).</p><p><strong>Conclusion: </strong>In this study, we found a significantly higher prevalence of tricuspid valve regurgitation in women. Aortic regurgitation was more prevalent in men. Aortic stenosis and mitral regurgitation had similar prevalence in both genders.</p>","PeriodicalId":7427,"journal":{"name":"American journal of cardiovascular disease","volume":"15 1","pages":"21-28"},"PeriodicalIF":1.3,"publicationDate":"2025-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11928885/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143690867","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Overcoming therapeutic challenges in a case of refractory chylothorax following blunt abdominal trauma through the utility of cone-beam computed tomography lymphangiography.","authors":"Hasan Dinc, Sükrü Oguz, Selcuk Akkaya, Elif Merve Bal, Atilla Türkyılmaz, Bekir Sami Karapolat, Celal Tekinbaş","doi":"10.62347/QIEZ3054","DOIUrl":"10.62347/QIEZ3054","url":null,"abstract":"<p><p>Chylothorax development following blunt abdominal trauma is a rare event. While low volume chylothoraxes usually improve with conservative treatment, invasive interventions are required in high-volume chylothoraxes with daily drainage exceeding 1000 ml. We report a case of a 14-year-old boy who developed high-volume (>3 L/d) chylothorax on the left side following blunt abdominal trauma. The patient did not respond to conservative treatments. He underwent thoracic duct ligation three times, with percutaneous lymphatic interventions, and percutaneous Lipiodol-glue mixture injections under computed tomography (CT) guidance, but all treatments were unsuccessful. We describe the four-month multidisciplinary challenge in this case that was ultimately successfully treated by surgical ligation of aberrant and/or collateral lymphatics draining from the left abdomen to the left pleural cavity, with the help of the novel cone-beam computed tomography (CBCT) lymphangiography (LAG) technique.</p>","PeriodicalId":7427,"journal":{"name":"American journal of cardiovascular disease","volume":"15 1","pages":"48-55"},"PeriodicalIF":1.3,"publicationDate":"2025-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11928884/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143690876","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Clinical characteristics and outcomes of patients undergoing percutaneous coronary intervention at Gesund Cardiac and Medical Center, Addis Ababa, Ethiopia, 2024.","authors":"Kesete Eskias, Alemayehu Bekele, Ousman Adal, Heyria Hussien, Lemlem Beza Demisse","doi":"10.62347/RIAQ1956","DOIUrl":"10.62347/RIAQ1956","url":null,"abstract":"<p><strong>Introduction: </strong>Percutaneous coronary intervention (PCI) is a critical procedure for improving blood flow by alleviating arterial blockage. However, its availability in Ethiopia is limited because of insufficient resources, staff, and infrastructure.</p><p><strong>Objective: </strong>To evaluate the clinical characteristics and outcomes of patients who underwent percutaneous coronary intervention at Gesund Cardiac and Medical Center in Addis Ababa, Ethiopia, in 2024.</p><p><strong>Methods: </strong>This retrospective observational chart review included 224 patients who underwent percutaneous coronary intervention. Data were collected using a standardized checklist, imported into EPI information v7, and analyzed using SPSS v26. A binary logistic regression model was used to identify factors associated with percutaneous coronary intervention.</p><p><strong>Results: </strong>The study found that most participants (n = 186, 83%) were male, with a mean age of 57.82 ± 11.5 years. Diabetes mellitus was prevalent among participants (n = 135, 60.3%), followed by hypertension (n = 127, 56.7%). A notable portion (n = 31, 13.8%) had previously undergone percutaneous coronary intervention. Most patients presented with typical chest pain, with ST-Elevation Myocardial Infarction (STEMI) being the primary indication for percutaneous coronary intervention. Post-procedure complications includes significant bleeding (n = 6, 2.6%), myocardial infarction (n = 20, 8.9%), death (n = 2, 0.9%), transfer to another hospital (n = 12, 5.4%), and acute kidney injury (n = 16, 7.14%). The use of bare metal stents was significantly associated with transfer to other hospitals (AOR = 5; 95% CI = 1.69-10.29). Male gender (AOR = 0.09; 95% CI = 0.03-0.34) and a history of myocardial infarction (AOR = 10; 95% CI = 2.31-13.31) were linked to an increased risk of post-percutaneous coronary intervention death.</p><p><strong>Conclusion and recommendations: </strong>Our findings suggest that coronary artery stenosis (CAS) is more prevalent in older individuals and men. Chronic illnesses often coexist with coronary artery stenosis, thereby complicating the prognosis. Interestingly, men exhibited a lower risk of unfavorable outcomes compared to women. Adherence to procedural guidelines and effective management techniques are essential for improving patient outcomes following percutaneous coronary intervention.</p>","PeriodicalId":7427,"journal":{"name":"American journal of cardiovascular disease","volume":"15 1","pages":"29-38"},"PeriodicalIF":1.3,"publicationDate":"2025-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11928886/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143690863","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The impact of threshold-loaded inspiratory muscle training and respiratory biofeedback on preserving inspiratory muscle strength and vital capacity after CABG: a randomized clinical trial.","authors":"Bahareh Mehregan-Far, Sedigheh Sadat Naimi, Mohsen Abedi, Parsa Salemi, Seyed Ahmad Raeis-Sadat, Mahmood Beheshti-Monfared","doi":"10.62347/JBMU4830","DOIUrl":"10.62347/JBMU4830","url":null,"abstract":"<p><strong>Objectives: </strong>Postoperative pulmonary complications (POPC) are common after cardiac surgeries such as coronary artery bypass grafting (CABG) and are influenced by factors including anesthesia and surgical trauma. Inspiratory muscle training (IMT) with visual biofeedback may mitigate these complications. This study investigates the impact of threshold loading inspiratory muscle training (TL-IMT) combined with respiratory biofeedback on the dynamic strength of inspiratory muscles (S-index) in patients undergoing CABG surgery during their hospitalization phase.</p><p><strong>Methods: </strong>A single-blind study was conducted with 38 CABG candidates at Shahid Modares Hospital, Tehran. Participants were randomized into two groups: the TL-IMT with biofeedback group and the placebo IMT group. TL-IMT exercises were performed at 30% of maximum dynamic inspiratory strength using the Power Breath K5 device, with visual biofeedback displayed on the screen. The placebo group performed the same exercises at minimal load without biofeedback. Both groups received standard respiratory physiotherapy. Measurements of S-index, peak inspiratory flow (PIF), and vital capacity (VC) were taken before surgery (T1), one day after surgery (T2), and at discharge (T3).</p><p><strong>Results: </strong>Both groups showed significant changes, with a decrease from T1 to T2 and an increase from T2 to T3. In the study group, T3 values remained the same as at T1, while the placebo IMT group experienced a significant decrease. After surgery, both groups had a drop in the S-index. However, the study group saw more pronounced changes between T3-T2 and T3-T1 compared to the control group, although no significant difference was found between T2-T1. By the time of discharge, the TL-IMT group had higher S-index values than the placebo group, returning to preoperative levels. Additionally, the TL-IMT group showed improvements in PIF and VC.</p><p><strong>Conclusion: </strong>TL-IMT with visual biofeedback effectively maintains dynamic inspiratory muscle strength and improves key pulmonary parameters in cardiac surgery patients. These findings suggest that integrating TL-IMT with biofeedback can enhance postoperative recovery and reduce the incidence of POPC.</p>","PeriodicalId":7427,"journal":{"name":"American journal of cardiovascular disease","volume":"14 6","pages":"375-383"},"PeriodicalIF":1.3,"publicationDate":"2024-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11744222/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142998636","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}