فهرست مطالب

Tehran University Heart Center - Volume:9 Issue: 2, Apr 2014

The Journal of Tehran University Heart Center
Volume:9 Issue: 2, Apr 2014

  • تاریخ انتشار: 1393/03/22
  • تعداد عناوین: 10
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  • Kourosh Soleimannejad, Younos Nouzari, Alireza Ahsani, Mostafa Nejatian, Kourosh Sayehmiri Pages 54-58
    Background
    Exercise and rehabilitation are important methods for decreasing the risk factors of coronary artery disease (CAD). We aimed to evaluate the effect of the cardiac rehabilitation (CR) exercise program on the cardiac structure and physiology in patients undergoing percutaneous coronary intervention (PCI).
    Methods
    In this randomized controlled study, 146 patients with CAD were divided equally into two groups: case group (undertaking CR after PCI) and control group (without rehabilitation after PCI). All the patients in the case group underwent echocardiography (before and after CR), and echocardiography was performed for the control group simultaneously. The CR exercise program encompassed 24 sessions, twice or three times a week, with each session lasting between 15 and 45 minutes, depending on the individual patient’s tolerance. Left ventricular (LV) ejection fraction, LV diastolic function, LV end-systolic and diastolic diameter, and right ventricular (RV) end-diastolic diameter were measured in the CR group before and after rehabilitation and compared to those in the control group at the same times.
    Results
    In this study, 146 patients (46 female and 100 male) were evaluated: 73 in the rehabilitation group and 73 in the control group. The mean age of the patients in the CR and control groups was 58.05 ± 10.27 and 56.76 ± 10.07 years, respectively. The CR exercise program had useful effects on LV diastolic function after PCI. The distribution of LV diastolic dysfunction after the CR exercise program was changed significantly only in the CR group (p value = 0.043). In the CR group, normal, grade I, grade II, and grade III LV diastolic dysfunction were observed in 20.5%, 69.8%, 6.8%, and 2.7%, respectively. This distribution was changed respectively to 30.1%, 61.6%, 5.4%, and 2.7% following CR, which showed a significant improvement due to CR in LV diastolic function, most prominently in the patients with grade I diastolic dysfunction (p value = 0.390). There was no significant change in LV and RV diameter before and after rehabilitation, while the ejection fraction increased significantly (p value < 0.05) in both groups.
    Conclusion
    The RC exercise program can be effective in the augmentation of LV diastolic dysfunction after PCI, without significant changes in LV diameters.
  • Parvin Akbari Asbagh, Mohammad Ali Navabi Shirazi, Aliakbar Soleimani, Maryam Razzaz, Naseradine Akbari Asbagh, Hussein Rayatzadeh, Mamak Shariat Pages 59-63
    Background
    Chylothorax is a rare but serious postoperative condition with a high rate of morbidity and may lead to the mortality of children undergoing congenital heart disease (CHD) surgery. This study evaluated the specific surgical procedures associated with the higher risk of postoperative chylothorax.
    Methods
    We assessed 435 cases undergoing CHD surgery between April 2003 and May 2006. We detected postoperative chylothorax in 6 patients. The diagnosis of chylothorax was established based on the presence of an odorless fluid with the characteristic milky appearance of the fluid (except when the patients were fasting in the immediate postoperative period), a triglyceride level greater than 110 mg/dL or between 50 and 110 mg/dL with a pleural fluid white cell count greater than 1000, and more than 80% lymphocytes on differential when the pleural fluid was not chylous.
    Results
    Over a 37-month period, 435 (mean age = 51.6 months; 232 males) patients underwent various types of surgical procedures for CHD; 6 patients developed chylothorax after the Fontan operation; one patient died due to severe chylothorax; 3 patients were managed by nutritional modifications, diuretics, and thoracocentesis; and 2 patients required thoracic duct ligation. The Fisher exact test analysis showed a significant association between the Fontan operation and postoperative chylothorax (p value < 0.0001).
    Keywords: Our study showed a significant association between the Fontan surgery_chylothorax
  • Younes Nozari, Mostafa Bahrehmand, Seyed Kianush Hosseini, Mehran Mahmoodian, Ahmad Sharafi Pages 64-69
    Background
    Mean platelet volume (MPV) correlates with platelet activity. The relation between MPV and long-term outcome in patients undergoing percutaneous coronary intervention (PCI) has been investigated in several studies. The aim of the present study was to investigate the utility of MPV in prognosticating the long-term outcome after elective PCI.
    Methods
    The study cohort included 2627 patients undergoing elective PCI between September 2008 and June 2010, whose baseline MPV measurements before PCI were available. The patients were divided into three groups of MPV < 9.1 fL, MPV = 9.1 to 10 fL, and MPV > 10 fL, and they were assessed for developing major adverse cardiac events (MACE), comprising death, myocardial infarction (MI), target vessel revascularization (TVR), and target lesion revascularization (TLR) over a one-year follow-up.
    Results
    Of 2539 patients, major adverse cardiac events (MACE) at one year occurred in 77 (3.0%) patients, including mortality in 26 (1.0%). The patients in the highest tertile (MPV > 10 fL) had no increased frequency of MACE compared to those in the mid (9.1 to 10fL) and lowest (< 9.1 fL) tertiles (3.3%, 2.2%, and 3.8%, respectively; p value = 0.14). No significant differences were found for each of the primary endpoints among the MPV tertiles. In multivariate logistic regression, we investigated the association between high MPV and total MACE (OR = 1.10, 95%CI: 0.69-1.77; p value = 0.68), death (OR = 1.14, 95%CI: 0.51-2.54; p value = 0.74), and non-fatal MI (OR = 1.85, 95%CI: 0.73-4.67; p value = 0.19) at one year''s follow-up but MPV did not remain in the model in any of the cases.In the diabetic patients, the one-way analysis of variance demonstrated that mortality was 1.6% (4 patients) in the highest tertile, 0.8% (2 patients) in the mid tertile, and 0.5% (one patient) in the lowest tertile.
    Conclusion
    There was no direct correlation between pre-procedural MPV and MACE in elective PCI. MPV can only be considered as an appropriate factor for predicting mortality in diabetic patients undergoing elective PCI.
  • Babak Baharvand Ahmadi, Mehrdad Namdari, Hirbod Mobarakeh Pages 70-75
    Background
    Diagnosis of coronary artery disease (CAD) in early stages is vital in decreasing mortality by reducing the risk factors. The aim of this study was to investigate the association between erectile dysfunction (ED) and CAD.
    Methods
    A total of 200 patients were divided into four groups according to their angiography
    Results
    Group 1 (G1, n = 59): patients with one-vessel disease (1-VD); Group 2 (G2, n = 40): patients with two-vessel disease (2-VD); Group 3 (G3, n = 50): patients with three-vessel disease (3-VD); and controls (C, n = 51) without any coronary disease. The International Index of Erectile Function (IIEF) was completed for all the patients to assess their sexual function and ED in the last 6 months.
    Results
    Mean age of the participants was 57.69 ± 12.466 years. The prevalence of ED in the CAD patients was significantly higher than that of the controls (75.16% vs. 60.8%; p value = 0.041). There was a significant direct correlation between the number of involved vessels in the CAD patients and ED severity (r: 0.183; p value = 0.010), and the ED rate increased with age.
    Conclusion
    In conclusion, ED severity correlated with the number of involved vessels documented by coronary angiography. Consequently, ED may be considered a possible marker for the development of atherosclerosis and CAD.
  • Zahra Ojaghi, Haghighi, Atoosa Mostafavi, Hassan Moladoust, Fereidoon Noohi, Majid Maleki, Maryam Esmaeilzadeh, Niloofar Samiei Pages 76-81
    Background
    Left ventricular (LV) twist is due to oppositely directed apical and basal rotation and has been proposed as a sensitive marker of LV function. We sought to assess the impact of chronic pure mitral regurgitation (MR) on the torsional mechanics of the left human ventricle using tissue Doppler imaging.
    Methods
    Nineteen severe MR patients with a normal LV ejection fraction and 16 non-MR controls underwent conventional echocardiography and apical and basal short-axis color Doppler myocardial imaging (CDMI). LV rotation at the apical and basal short-axis levels was calculated from the averaged tangential velocities of the septal and lateral regions, corrected for the LV radius over time. LV twist was defined as the difference in LV rotation between the two levels, and the LV twist and twisting/untwisting rate profiles were analyzed throughout the cardiac cycle.
    Results
    LV twist and LV torsion were significantly lower in the MR group than in the non-MR group (10.38˚ ± 4.04˚ vs. 13.95˚ ± 4.27˚; p value = 0.020; and 1.29 ± 0.54 ˚/cm vs. 1.76 ± 0.56 ˚/cm; p value = 0.021, respectively), both suggesting incipient LV dysfunction in the MR group. Similarly, the untwisting rate was lower in the MR group (-79.74 ± 35.97 ˚/s vs.-110.96 ± 34.65 ˚/s; p value = 0.020), but there was statistically no significant difference in the LV twist rate.
    Conclusion
    The evaluation of LV torsional parameters in MR patients with a normal LV ejection fraction suggests the potential role of these sensitive variables in assessing the early signs of ventricular dysfunction in asymptomatic patients.
  • Seyfollah Abdi, Hoseinali Basiri, Negar Salehi, Hamid Reza Pouraliakbar, Anoushiravan Vakili, Zarch Pages 82-84
    The coarctation of the aorta (CoA) is rare in adulthood. Diagnosis is made by clinical suspicion and physical findings such as blood pressure difference between the upper and lower extremities, pulse delay in the femoral artery, and systolic murmur over the thoracic spine.The CoA in adulthood and in patients with associated aneurysm is challenging and different complications even with proper treatment can occur. Covered stents are indicated in concomitant aneurysm, older age, and tight coarctation. A 26-year-old male with resistant hypertension due to a CoA diagnosed by computed tomography angiography referred to our center for an attempted stent implantation. Cardiac catheterization and aortography revealed a long CoA after the origin of the left subclavian artery with a 60 mmHg gradient. Moreover, there was a large aneurysm in the site of the coarctation. Under general anesthesia and fluoroscopic guidance, two balloon-expandable covered Cheatham-Platinum stents (size 18 in 44 millimeters and size 18 in 50 millimeters) were successfully implanted across the CoA with no residual gradient. On 2 years'' follow-up, the patient had no symptoms except for mild hypertension. In this patient, the use of a covered stent within the aneurysm was safe and effective.
  • Gholamreza Moradi, Fereydoun Sabzi, Abdolhamid Zokaei, Naser Hemati Pages 85-89
    Aortic dissection begins with the formation of a tear in the aortic intima, and it directly exposes an underlying diseased medial layer to the driving force of the intraluminal blood. This blood penetrates the diseased medial layer and cleaves the media longitudinally, thereby dissecting the aortic wall. Herein, we report the case of a 38-year-old woman, who presented with chest pain and dyspnea. After physical examination, laboratory evaluation, echocardiography, and CT–angiography, extensive aortic dissection was diagnosed involving the innominate and left common carotid arteries. Accordingly, the debranching of the aortic arch arteries was performed. During the procedure, the patient was monitored with bilateral regional cerebral tissue oximetry. The patient did not show any signs of complications either in the postoperative period or at postoperative three-month weekly follow-up or at subsequent monthly follow-up for the past year.
  • Alireza Rostamzadeh, Kamal Khademvatani, Yousef Rezaei, Nariman Sepehrvand Pages 90-92
    Right-sided Heart Thrombi is a life-threatening condition that needs to an immediate therapy. It is detected by trans-thoracic echocardiography (TTE). Generally, thrombolysis is considered as a treatment of choice but there is no consensus about the therapeutic choice. We present a case of multiple right atrial thrombi with concurrent mobile and broad-based in-situ thrombi in a patient with history of Chronic Obstructive Pulmonary Disease (COPD) that completely resolved by thrombolysis following a failed heparin infusion.
  • Feridoun Sabzi, Samsam Dabiri, Alireza Poormotaabed Pages 93-96
    Chylothorax in adult occurs most commonly in the wake of cardiac and thoracic procedures. Injuries to the common thoracic duct in the thorax or its branches in the mediastinum, injuries to the thymus tissues, dissection of the superior vena cava or ascending aorta, dissection of the aortic arch, disruption of the accessory lymphatics in the left or right thorax, and increased pressure in the systemic vein exceeding that of the thoracic duct (usually in the superior vena cava thrombosis, Glenn Shunt, and hemi-Fontan) have been proposed as the possible causes of chylothorax after surgery for congenital heart disease. However, pulmonary hypertension is an exceedingly rare cause of chylothorax in adults. We present a case of chylothorax after atrial septal defect surgery in a 30-year-old female patient with pulmonary hypertension. The postoperative period was complicated by chylothorax, which was confirmed by the high lipid content of chylous effusion. The patient was treated conservatively with diet therapy, and the effusion was abolished completely after two weeks. No recurrence of chylothorax was detected at 3 months'' follow-up.