scholarly journals Pulmonary trunk to ascending aorta ratio and reference values for diameters of pulmonary arteries and main bronchi in healthy adults

2020 ◽  
Vol 14 (1) ◽  
pp. 22-28
Author(s):  
Büşra Pirinç ◽  
Zeliha Fazlıoğulları ◽  
Mustafa Koplay ◽  
Ahmet Kağan Karabulut ◽  
Nadire Ünver Doğan
Keyword(s):  
Reference Values ◽  
Pulmonary Arteries ◽  
Ascending Aorta ◽  
Pulmonary Trunk ◽  
Healthy Adults

scholarly journals Streptococcus pyogenes Pericarditis with Resultant Pulmonary Trunk Compression Secondary to Mycotic Pseudoaneurysm

2018 ◽  
Vol 2018 ◽  
pp. 1-4
Author(s):  
E. Fry ◽  
J. Urbanczyk ◽  
J. Price ◽  
R. Digiovanni ◽  
M. Jepson ◽  
...  
Keyword(s):  
Streptococcus Pyogenes ◽  
Mycotic Aneurysm ◽  
Pulmonary Arteries ◽  
Ascending Aorta ◽  
Pulmonary Trunk ◽  
Purulent Pericarditis ◽  
Mycotic Pseudoaneurysm ◽  
History Of ◽  
Group A ◽  
Mycotic Aneurysms

Purulent pericarditis is a rare disease in the era of antibiotics, with Streptococcus pyogenes being a possible, though uncommon etiology. Even more uncommon are mycotic aneurysms secondary to group A strep purulent pericarditis and bacteremia. We report a case of an 18-year-old female with a history of strep pharyngitis develop Streptococcus pyogenes purulent pericarditis with subsequent ventricular fibrillation (VF). Following initial stabilization, she ultimately developed a 4.8 cm mycotic aneurysm of the ascending aorta, with resultant compression of the pulmonary trunk and right pulmonary arteries.

Longitudinal extension of the pulmonary trunk during breathing in young rabbits: a possible factor in elastin fragmentation

1976 ◽  
Vol 54 (2) ◽  
pp. 113-117
Author(s):  
Paul H. Smith
Keyword(s):  
Pulmonary Arteries ◽  
Pulmonary Trunk ◽  
Corrosion Casts ◽  
Longitudinal Stress ◽  
Longitudinal Extension ◽  
Silicone Polymer

Corrosion casts of the pulmonary trunk and major branches of the pulmonary arteries of 39 rabbits were made from a silicone polymer. In half of the rabbits the casts were made with the lungs expanded and half with the lungs collapsed. The length of various segments of the casts were measured from magnified photographs. It was found that in rabbits less than 23 days old the pulmonary trunk is significantly longer when the lungs are expanded than when they are collapsed. This suggests that a repeated longitudinal extension of the vessel occurs during breathing. This effect disappears after 30 days of age, possibly because of elastin fragmentation. Between the ages of 23 and 30 days the growth in length and diameter of the pulmonary trunk undergoes a rapid acceleration. This may also be the result of elastin fragmentation. Whereas it may be that repeated longitudinal stress in the pulmonary trunk during breathing causes elastin in its media to fragment, one cannot exclude the possibility that other factors such as growth are responsible.

TEWL reference values in healthy adults

2018 ◽  
Vol 179 (5) ◽  
pp. e204-e204 ◽  
Author(s):  
M. Akdeniz ◽  
S. Gabriel ◽  
A. Lichterfeld-Kottner ◽  
U. Blume-Peytavi ◽  
J. Kottner
Keyword(s):  
Reference Values ◽  
Healthy Adults

scholarly journals Standard reference values of weight and maximum pressure distribution in healthy adults aged 18–65 years in Germany

2020 ◽  
Vol 39 (1) ◽  
Author(s):  
D. Ohlendorf ◽  
K. Kerth ◽  
W. Osiander ◽  
F. Holzgreve ◽  
L. Fraeulin ◽  
...  
Keyword(s):  
Body Weight ◽  
Pressure Distribution ◽  
Reference Values ◽  
Effect Size ◽  
Weight Distribution ◽  
Age Groups ◽  
Healthy Adults ◽  
The Body ◽  
Maximum Pressure ◽  
Left And Right

Abstract Background The aim of this study was to collect standard reference values of the weight and the maximum pressure distribution in healthy adults aged 18–65 years and to investigate the influence of constitutional parameters on it. Methods A total of 416 healthy subjects (208 male / 208 female) aged between 18 and 65 years (Ø 38.3 ± 14.1 years) participated in this study, conducted 2015–2019 in Heidelberg. The age-specific evaluation is based on 4 age groups (G1, 18–30 years; G2, 31–40 years; G3, 41–50 years; G4, 51–65 years). A pressure measuring plate FDM-S (Zebris/Isny/Germany) was used to collect body weight distribution and maximum pressure distribution of the right and left foot and left and right forefoot/rearfoot, respectively. Results Body weight distribution of the left (50.07%) and right (50.12%) foot was balanced. There was higher load on the rearfoot (left 54.14%; right 55.09%) than on the forefoot (left 45.49%; right 44.26%). The pressure in the rearfoot was higher than in the forefoot (rearfoot left 9.60 N/cm2, rearfoot right 9.51 N/cm2/forefoot left 8.23 N/cm2, forefoot right 8.59 N/cm2). With increasing age, the load in the left foot shifted from the rearfoot to the forefoot as well as the maximum pressure (p ≤ 0.02 and 0.03; poor effect size). With increasing BMI, the body weight shifted to the left and right rearfoot (p ≤ 0.001, poor effect size). As BMI increased, so did the maximum pressure in all areas (p ≤ 0.001 and 0.03, weak to moderate effect size). There were significant differences in weight and maximum pressure distribution in the forefoot and rearfoot in the different age groups, especially between younger (18–40 years) and older (41–65 years) subjects. Discussion Healthy individuals aged from 18 to 65 years were found to have a balanced weight distribution in an aspect ratio, with a 20% greater load of the rearfoot. Age and BMI were found to be influencing factors of the weight and maximum pressure distribution, especially between younger and elder subjects. The collected standard reference values allow comparisons with other studies and can serve as a guideline in clinical practice and scientific studies.

scholarly journals Reference values for the six-minute pegboard and ring test in healthy adults in Brazil

2018 ◽  
Vol 44 (3) ◽  
pp. 190-194 ◽  
Author(s):  
Vanessa Pereira Lima ◽  
Fabiana Damasceno Almeida ◽  
Tania Janaudis-Ferreira ◽  
Bianca Carmona ◽  
Giane Amorim Ribeiro-Samora ◽  
...  
Keyword(s):  
Physical Activity ◽  
Data Analysis ◽  
Reference Values ◽  
Healthy Adults ◽  
Ring Test ◽  
Age Group ◽  
Upper Arm ◽  
Positive Correlation ◽  
The Difference ◽  
Test Result

ABSTRACT Objective: To determine reference values for the six-minute pegboard and ring test (6PBRT) in healthy adults in Brazil, correlating the results with arm length, circumference of the upper arm/forearm of the dominant arm, and the level of physical activity. Methods: The participants (all volunteers) performed two 6PBRTs, 30 min apart. They were instructed to move as many rings as possible in six minutes. The best test result was selected for data analysis. Results: The sample comprised 104 individuals, all over 30 years of age. Reference values were reported by age bracket. We found that age correlated with 6PBRT results. The number of rings moved was higher in the 30- to 39-year age group than in the > 80-year age group (430.25 ± 77.00 vs. 265.00 ± 65.75), and the difference was significant (p < 0.05). The 6PBRT results showed a weak, positive correlation with the level of physical activity (r = 0.358; p < 0.05) but did not correlate significantly with any other variable studied. Conclusions: In this study, we were able to determine reference values for the 6PBRT in healthy adults in Brazil. There was a correlation between 6PBRT results and age.

scholarly journals Coronary computed tomography angiography (CCTA): effect of bolus-tracking ROI positioning on image quality

2020 ◽  
Author(s):  
Heiner Nebelung ◽  
Thomas Brauer ◽  
Danilo Seppelt ◽  
Ralf-Thorsten Hoffmann ◽  
Ivan Platzek
Keyword(s):  
Image Quality ◽  
Left Atrium ◽  
Coronary Arteries ◽  
Coronary Computed Tomography Angiography ◽  
Pulmonary Arteries ◽  
Ascending Aorta ◽  
Triple Rule Out ◽  
Comparable Image Quality ◽  
Rule Out

Abstract Objectives The aim of the study was to evaluate the effect of bolus-tracking ROI positioning on coronary computed tomography angiography (CCTA) image quality. Methods In this retrospective monocentric study, all patients had undergone CCTA by step-and-shoot mode to rule out coronary artery disease within a cohort at intermediate risk. Two groups were formed, depending on ROI positioning (left atrium (LA) or ascending aorta (AA)). Each group contained 96 patients. To select pairs of patients, propensity score matching was used. Image quality with regard to coronary arteries as well as pulmonary arteries was evaluated using quantitative and qualitative scores. Results In terms of the coronary arteries, there was no significant difference between both groups using quantitative (SNR AA 14.92 vs. 15.46; p = 0.619 | SNR LM 19.80 vs. 20.30; p = 0.661 | SNR RCA 24.34 vs. 24.30; p = 0.767) or qualitative scores (4.25 vs. 4.29; p = 0.672), respectively. With regard to pulmonary arteries, we found significantly higher quantitative (SNR RPA 8.70 vs. 5.89; p < 0.001 | SNR LPA 9.06 vs. 6.25; p < 0.001) and qualitative scores (3.97 vs. 2.24; p < 0.001) for ROI positioning in the LA than for ROI positioning in the AA. Conclusions ROI positioning in the LA or the AA results in comparable image quality of CT coronary arteriography, while positioning in the LA leads to significantly higher image quality of the pulmonary arteries. These results support ROI positioning in the LA, which also facilitates triple-rule-out CT scanning. Key Points • ROI positioning in the left atrium or the ascending aorta leads to comparable image quality of the coronary arteries. • ROI positioning in the left atrium results in significantly higher image quality of the pulmonary arteries. • ROI positioning in the left atrium is feasible to perform triple-rule-out CTA.

scholarly journals P701 Usefulness of echocardiography in diagnosis and monitoring in patient with pulmonary embolism during pregnancy, a case report

2020 ◽  
Vol 21 (Supplement_1) ◽  
Author(s):  
K Starzyk ◽  
P Dybich ◽  
K Ciuraszkiewicz ◽  
W Rokita ◽  
B Wozakowska-Kaplon
Keyword(s):  
Pulmonary Embolism ◽  
Pulmonary Artery ◽  
Troponin T ◽  
Pulmonary Arteries ◽  
Pulmonary Trunk ◽  
Clinical State ◽  
Main Trunk ◽  
Right Pulmonary Artery ◽  
Low Incidence ◽  
The Right

Abstract Pulmonary embolism is one of the leading causes of maternal mortality despite a low incidence of during pregnancy. We present 32-year-old woman, in the 35 week of first pregnancy, admitted to the Intensive Care Unit with dyspnea, tachycardia, cyanosis. Echocardiography confirmed the presence of embolic material in the main trunk of pulmonary artery, spreading to the right pulmonary artery. D-dimer and troponin T level were elevated, BNP remained within the normal range. The risk in PESI scale was assumed as intermediate high. LMWH therapy was initiated, the patient was constantly monitored. Venous thrombotic disease in lower extremities was excluded by ultrasonography. The treatment was carried out under obstetric supervision. The clinical state gradually improved, the patient was hemodynamically stable. Serial echocardiographic testing, revealed gradual regression of changes in the pulmonary trunk. Normalization of troponins and lowering of BNP levels were observed. The pregnancy was terminated in 39 week, by cesarean section (obstetric indications). The LMWH was continued few days after delivery, as the patient started lactation. She decided to terminate lactation in a first week after delivery so the therapy was switched into rivaroxaban for at least 3 months. Echocardiography after 3 month confirmed lack of changes in pulmonary trunk, the risk of pulmonary hypertension was low. Echocardiography can be a method of choice for confirming and monitoring pulmonary embolism during pregnancy, in a situation of high or intermediate clinical risk and good visualization of changes in pulmonary arteries Abstract P701 Figure. Embolism of pulmonary trunk and RPA

scholarly journals P737 Left ventricular hemodynamic forces: towards establishing reference values for healthy adults

2020 ◽  
Vol 21 (Supplement_1) ◽  
Author(s):  
F Capuano ◽  
R Cocchia ◽  
F Ferrara ◽  
S Lanero ◽  
V Russo ◽  
...  
Keyword(s):  
Reference Values ◽  
Healthy Subjects ◽  
Left Ventricular ◽  
Healthy Adults ◽  
Disease Assessment ◽  
Lv Function ◽  
Specific Reference ◽  
Endocardial Contour ◽  
Hemodynamic Forces ◽  
Lv Volume

Abstract Introduction Left ventricular hemodynamic forces (LV-HDF) have been recently demonstrated to be promising markers of sub-clinical dysfunction and potential predictors of disease outcome. However, there is a lack of reference values in healthy subjects. Knowledge of physiologic ranges is mandatory towards the use of LV-HDF-based indices for disease assessment in future clinical applications. Purpose Aim of the current study is to define the normal reference values for LV-HDF parameters in a large cohort of healthy adults. Here we present preliminary results for the initial set of enrolled subjects. Methods We enrolled 82 healthy subjects [mean age 44 ± 13.2 years (range 18-88), 41 men]. All participants underwent standard transthoracic echocardiography (TTE) examination, as recommended by current guidelines, including apical two-, three- and four-chamber windows, acquired at a frame rate above 40 Hz. These were then analyzed by tri-plane tissue tracking, measuring LV volume and LV ejection fraction (EF) as reference parameters. The same tracking method was used to evaluate the global hemodynamic force by a novel mathematical calculation technique applied to the three-dimensional endocardial contour. Physical-based LV-HDF parameters were then extracted for clinical application; these included the amplitude (root mean square) of the longitudinal and transversal force components (FL and FT) and their alignment angle relative to the LV axis. Parameters were computed as average over the whole cardiac cycle as well as limited to the systolic phase. Forces were normalized with LV volume to reduce variability with LV dimension, and divided by specific weight to yield a dimensionless measure. Results Mean EF was 63 ± 9%. Whole cycle LV-HDF parameters were: FL = 16.0 ± 5.6%, FT = 2.3 ± 0.8%, with significant longitudinal alignment FT/FL = 0.15 ± 0.04, angle = 13.0°±3.1°. Systolic HDF parameters were: FL = 22.7 ± 8.2%, FT = 2.9 ± 1.1%, with longitudinal alignment FT/FL = 0.13 ± 0.04, angle = 11.2°±3.1°. Importantly, dimensionless physical-based LV-HDF parameters showed no significant variation with age, gender or BSA. Conclusions We report the physiologic range of LV-HDF parameters measured by TTE. Knowledge of age- and gender-specific reference values, for a combination of standard, mechanical and hemodynamic indices, can improve the global assessment of the LV function and may help to detect sub-clinical stages of LV dysfunction.

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