Diagnostic Impact of Quantitative Dual-Energy Computed Tomography Perfusion Imaging for the Assessment of Subsegmental Pulmonary Embolism.

Objective: The aim of this study was to investigate the quantitative differences of dual-energy computed tomography perfusion imaging measurements in subsegmental pulmonary embolism (SSPE), between normal lung parenchyma (NLP) and hypoperfused segments (HPS) with and without thrombus on computed tomography angiography (CTA).

Methods: Lung attenuation, iodine density, and normalized uptake values were measured from HPS and NLP on iodine maps of 43 patients with SSPE. Presence of pulmonary embolism (PE) on CTA was recorded.

Pulmonary Artery Distensibility is Worsened in Obstructive Sleep Apnea Syndrome.

Background: Obstructive sleep apnea syndrome (OSAS) leads to right ventricular (RV) dysfunction and pulmonary hypertension (PH) in the later stages. Early determination of these conditions is very important.

Objectives: We aimed to evaluate the correlations of pulmonary artery distensibility, right pulmonary artery fractional shortening (RPA-FS), and pulmonary artery stiffness (PAS) with PH among newly diagnosed OSAS patients.

Broncholithiasis presenting with lithoptysis.

Broncholithiasis is defined as calcified or ossified material in the bronchial lumen. The most frequently seen symptoms are a non-productive cough and hemoptysis. Occasionally, broncholytic expectoration can be seen, which is known as lithoptysis.

Coronary flow reserve is impaired in patients with obstructive sleep apnea.

Study Objectives: Obstructive sleep apnea (OSA) is common in adult populations. Accumulating data indicate that it is independently associated with a variety of cardiovascular diseases and has prognostic importance in affected cases. In this study, we aimed to evaluate coronary flow reserve (CFR) in patients with OSA and controls.

Portopulmonary hypertension in liver transplant candidates.

Pulmonary vascular disorders including portopulmonary hypertension (PoPHT) are among the common complications of liver disease and are prognostically significant. Survival is very low without medical treatment and liver transplantation. With advances in medical therapy for elevated pulmonary artery pressure (PAP) and liver transplant surgery, survival of patients with PoPHT and advanced liver disease is significantly improved.

Lack of association of matrix metalloproteinase-9 promoter gene polymorphism in obstructive sleep apnea syndrome.

Purpose: Obstructive sleep apnea syndrome (OSAS) is a public health problem. There is an effort to establish the genetic contributions to the development of OSAS. One is matrix metalloproteinases, extracellular matrix degrading enzymes related to systemic inflammation.

Effect of thyroid function on COPD exacerbation frequency: a preliminary study.

Background: Frequent exacerbations of chronic obstructive pulmonary disease (COPD) have negative effects on quality of life and survival. Thus, factors related to exacerbations should be determined. We aimed to evaluate the effects of thyroid function on quality of life and exacerbation frequency in COPD patients.

Value of serum and induced sputum surfactant protein-D in chronic obstructive pulmonary disease.

Background: Surfactant Protein D (SP-D) is an important marker in chronic obstructive pulmonary disease (COPD). Serum SP-D levels increase while lung production of SP-D decreases in COPD. SP-D is a specific biomarker for monitoring COPD, assessment of exacerbation frequency and arrangement of treatment modalities.

Effects of peripheral neuropathy on exercise capacity and quality of life in patients with chronic obstructive pulmonary diseases.

Introduction: Chronic obstructive pulmonary diseases (COPD) have some systemic effects including systemic inflammation, nutritional abnormalities, skeletal muscle dysfunction, and cardiovascular, skeletal and neurological disorders. Some studies have reported the presence of peripheral neuropathy (PNP) at an incidence of 28-94% in patients with COPD. Our study aimed to identify whether PNP affects exercise performance and quality of life in COPD patients.

Preoperative pulmonary evaluation of liver transplant candidates: results from 341 adult patients.

Background: Pulmonary disorders are among the commonly encountered and prognostically important problems in patients with chronic liver disease. To define the prevalence and types of respiratory disorders in patients with advanced liver disease evaluated for liver transplant (LT) candidacy, and to determine factors affecting postoperative outcome.

Material/methods: The records of 341 adult patients evaluated for LT candidacy were retrospectively examined.

Evaluation of liver transplant candidates: A pulmonary perspective.

Chronic liver disease is one of the leading causes of mortality and morbidity in the worldwide adult population. Liver transplant is the gold standard therapy for end-stage liver disease and many patients are on the waiting list for a transplant. A variety of pulmonary disorders are encountered in cirrhotic patients.

Renal transplant improves pulmonary hypertension in patients with end stage renal disease.

Background: Pulmonary hypertension (PH) is present in a significant proportion of patients with end stage renal disease (ESRD) and is of prognostic importance. Data on the effect of renal transplant on PH is very limited. In this study, the aim was to examine the effect of renal transplant on systolic pulmonary artery pressure (SPAP) determined by Doppler echocardiography.

Comparative effects of losartan and nifedipine therapy on exercise capacity, Doppler echocardiographic parameters and endothelin levels in patients with secondary pulmonary hypertension.

Objective: Pulmonary hypertension (PHT) is associated with high mortality and morbidity. Interest has increased in the use of drugs that, because of their neurohumoral inhibitory effects, inhibit the renin angiotensin system. In this study, we sought to examine whether losartan therapy is non-inferior to nifedipine in the treatment of secondary PHT.

Pulmonary complications and mortality after liver transplant.

Objectives: Pulmonary complications after liver transplant significantly affect mortality and morbidity; however, their relation has not been clearly established. We sought to determine pulmonary complications during the early and late term after liver transplant and identify risk factors for mortality.

Materials And Methods: At our institution, 130 liver transplant patients (mean age, 40.