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The chest x-ray is the most commonly performed diagnostic x-ray examination. A chest x-ray produces images of the heart, lungs, airways, blood vessels and the bones of the spine and chest. An x-ray (radiograph) is a noninvasive medical test that helps physicians diagnose and treat medical conditions
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Cyanotic congenital heart disease occurs when deoxygenated blood crosses from the right to left side of the heart without passing through the lungs, causing bluish skin. The document discusses the most common causes of cyanotic heart disease including tetralogy of Fallot, transposition of the great arteries, tricuspid atresia, truncus arteriosus, and total anomalous pulmonary venous return. It provides details on the pathophysiology, clinical presentation, investigations, and management of these conditions. Complications include cerebral thrombosis, heart failure, and pulmonary hypertension. Prevention involves screening for maternal infections and illnesses during pregnancy.
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2. It outlines the diagnostic considerations for cyanotic heart disease versus lung disease, including clinical characteristics like "happy" tachypnea, differential cyanosis, murmurs, the hyperoxia test, chest x-ray findings, and electrocardiograms.
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Cardiology2472010
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Cardiac tamponade is caused by fluid accumulating in the pericardial space, putting pressure on the heart and reducing ventricular filling. Common causes include malignant diseases, infections like tuberculosis, and recent cardiovascular procedures. Symptoms include dyspnea, tachycardia, and muffled heart sounds. Diagnosis is made through echocardiogram showing pericardial effusion and ventricular collapse. Treatment involves pericardiocentesis to drain fluid followed by surgery to address the underlying cause and prevent reaccumulation. Complications can include cardiogenic shock if not treated promptly.
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Cardiac tamponade Toufiqur Rahman
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Teaching files chest 2
Teaching cases of chest pathology, differential diagnosis, interpretation of chest case, CXR and CT , reference textbook of teaching files ( Chest)
Approach to cyanotic chd
This document provides an overview of cyanotic heart disease in newborns, including:
1. It defines cyanosis and discusses the physiological causes, such as pulmonary venous desaturation, right-to-left shunting, and complete mixing.
2. It outlines the diagnostic considerations for cyanotic heart disease versus lung disease, including clinical characteristics like "happy" tachypnea, differential cyanosis, murmurs, the hyperoxia test, chest x-ray findings, and electrocardiograms.
3. It categorizes different types of cyanotic heart disease based on their dependence on the ductus arteriosus, including lesions with severe pulmonary obstruction that are ductus-dependent and
Pericardial deseases
This document discusses various pathologies that can affect the pericardium, including pericardial effusion, constrictive pericarditis, pericardial cysts, hematomas, neoplasms, and congenital absence of the pericardium. It provides details on the causes, symptoms, and diagnostic imaging findings of each condition. Key points include that pericardial effusion is most commonly caused by myocardial infarction and can be detected on echocardiogram, CT, or plain X-ray. Constrictive pericarditis results from chronic inflammation and scarring, leading to impaired cardiac filling. Pericardial cysts and neoplasms present as masses that can be further
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This document provides an overview of pleural effusion findings on chest x-rays. It defines the pleural space and reasons fluid may accumulate there. Key signs of pleural effusion on chest x-ray include a blunted costophrenic angle, meniscus sign, and elevated hemidiaphragm. Loculated effusions can form adhesions and appear as smooth, poorly defined masses that droop on upright images. Different views and positions are useful to detect various amounts of pleural fluid.
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Pericarditis and it's diagnosis, treatment and complications.
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Arrythmia-IV.pptx
1) Bradycardia can be caused by abnormalities in the conduction system or autonomic nervous system. The conduction system includes the sinus node, AV node, His-Purkinje system and different types of heart block can occur when impulses are blocked at different locations.
2) There are three main types of AV block - first degree, second degree (Mobitz types I and II), and third degree. High grade AV block involves blockage of two or more consecutive impulses.
3) Third degree or complete heart block results in complete dissociation between the atria and ventricles with independent pacemakers. It can occur at the AV node or below in the His-Purkin
Arrythmia-III.pptx
1. Bradycardia is defined as a resting heart rate below 50 beats per minute. It can be physiological or pathological.
2. Sinus bradycardia originates from the sinus node and has a normal P wave morphology with a prolonged PR interval. It can be caused by increased vagal tone, medications, or hypothyroidism.
3. Sick sinus syndrome is characterized by sinus bradycardia, sinus arrest, or combinations of sinus node and AV node dysfunction. It may involve intermittent bradycardia and tachycardia. Pacemaker implantation is usually treatment.
Arrythmia-II.pptx
This document discusses ventricular arrhythmias including their origins, characteristics, classifications, and causes. It provides details on:
- The sites of origin for supraventricular tachycardia (SVT) and ventricular arrhythmias.
- Characteristics that distinguish SVT from ventricular arrhythmias such as QRS width.
- Classifications of ventricular arrhythmias including premature ventricular complexes, ventricular tachycardia, fibrillation, and electrical storm.
- Causes and characteristics of different types of ventricular tachycardia such as monomorphic VT, polymorphic VT, and torsades de pointes.
- Investigations and treatments for ventricular arrhythmias including cardiac imaging
Arrythmia-I.pptx
This document provides information on supraventricular tachycardia (SVT), including:
- The anatomy and conduction system of the heart that is relevant to SVT.
- The mechanisms that can cause cardiac arrhythmias, including disorders of impulse formation, conduction, and combinations of the two.
- Characteristics used to classify different types of arrhythmias based on rate, rhythm, site of origin, and QRS morphology.
- Specific types of SVT like atrial fibrillation, AV nodal reentry tachycardia, and accessory pathway mediated tachycardias.
- Methods for diagnosing and treating SVT such as electrophysiology studies, catheter ablation
Trio of Rheumatic Mitral Stenosis, Right Posterior Septal Accessory Pathway a...
A 57-year-old male presented with recurrent palpitations. He was diagnosed with rheumatic mitral stenosis, right posterior septal accessory pathway and atrial flutter. An electrophysiological study after percutaneous balloon mitral valvotomy showed that the palpitations were due to atrial flutter with right bundle branch aberrancy. The right posterior septal pathway was a bystander because it had a higher refractory period than the atrioventricular node.
Anticoagulation therapy during pregnancy
This document discusses anticoagulation therapy options during pregnancy for different cardiac conditions. It notes that vitamin K antagonists (VKAs) should be avoided in the first trimester due to risk of embryopathy but can be used in the second and third trimester with risks of 0.7-2% of foetopathy. Unfractionated heparin does not cross the placenta but its use throughout pregnancy is not recommended due to risk of foetopathy. Low molecular weight heparin is considered the safest option for anticoagulation in weeks 6-12 when risk of embryopathy is a concern and has not been associated with risk of foetopathy. Fondaparinux use should be limited
Coronary guidewire
Percutaneous balloon dilatation, first described by
Andreas Gruentzig in 1979, was initially performed
without the use of guidewires.1 The prototype
balloon catheter was developed as a double lumen
catheter (one lumen for pressure monitoring or
distal perfusion, the other lumen for balloon inflation/deflation) with a short fixed and atraumatic
guidewire at the tip. Indeed, initially the technique
involved advancing a rather rigid balloon catheter
freely without much torque control into a coronary
artery. Bends, tortuosities, angulations, bifurcations,
and eccentric lesions could hardly, if at all, be negotiated, resulting in a rather frustrating low procedural success rate whenever the initial limited
indications (proximal, short, concentric, noncalcified) were negated.2 Luck was almost as
important as expertise, not only for the operator,
but also for the patient. It is to the merit of
Simpson who, in 1982, introduced the novelty of
advancing the balloon catheter over a removable
guidewire, which had first been advanced in the
target vessel.3 This major technical improvement
resulted overnight in a notable increase in the procedural success rate. Guidewires have since evolved
into very sophisticated devices.
Intracoronary optical coherence tomography
Optical coherence tomography-guided algorithm for percutaneous coronary intervention. Vessel diameter should be assessed using the external elastic lamina (EEL)-EEL diameter at the reference segments, and rounded down to select interventional devices (balloons, stents). If the EEL cannot be identified, luminal measures are used and rounded up to 0.5 mm larger for selection of the devices. Optical coherence tomography (OCT)-guided optimisation strategies post stent implantation per EEL-based diameter measurement and per lumen-based diameter measurement are shown. For instance, if the distal EEL-EEL diameter measures 3.2 mm×3.1 mm (i.e., the mean EEL-based diameter is 3.15 mm), this number is rounded down to the next available stent size and post-dilation balloon to be used at the distal segment. Thus, a 3.0 mm stent and non-compliant balloon diameter is selected. If the proximal EEL cannot be visualised, the mean lumen diameter should be used for device sizing. For instance, if the mean proximal lumen diameter measures 3.4 mm, this number is rounded up to the next available balloon diameter (within up to 0.5 mm larger) for post-dilation. MLA: minimal lumen area; MSA: minimal stent area;NC: non-compliant
Brugada syndrome
Brugada syndrome (BrS) is an inherited cardiac disorder,
characterised by a typical ECG pattern and an increased
risk of arrhythmias and sudden cardiac death (SCD).
BrS is a challenging entity, in regard to diagnosis as
well as arrhythmia risk prediction and management.
Nowadays, asymptomatic patients represent the majority
of newly diagnosed patients with BrS, and its incidence
is expected to rise due to (genetic) family screening.
Progress in our understanding of the genetic and
molecular pathophysiology is limited by the absence
of a true gold standard, with consensus on its clinical
definition changing over time. Nevertheless, novel
insights continue to arise from detailed and in-depth
studies, including the complex genetic and molecular
basis. This includes the increasingly recognised
relevance of an underlying structural substrate. Risk
stratification in patients with BrS remains challenging,
particularly in those who are asymptomatic, but recent
studies have demonstrated the potential usefulness
of risk scores to identify patients at high risk of
arrhythmia and SCD. Development and validation of
a model that incorporates clinical and genetic factors,
comorbidities, age and gender, and environmental
aspects may facilitate improved prediction of disease
expressivity and arrhythmia/SCD risk, and potentially
guide patient management and therapy. This review
provides an update of the diagnosis, pathophysiology
and management of BrS, and discusses its future
perspectives.
A roadmap for the human development
The Human Developmental Cell Atlas (HDCA) initiative, which is part of the Human Cell Atlas, aims to create a comprehensive reference map of cells during development. This will be critical to understanding normal organogenesis, the effect of mutations, environmental factors and infectious agents on human development, congenital and childhood disorders, and the cellular basis of ageing, cancer and regenerative medicine. Here we outline the HDCA initiative and the challenges of mapping and modelling human development using state-of-the-art technologies to create a reference atlas across gestation. Similar to the Human Genome Project, the HDCA will integrate the output from a growing community of scientists who are mapping human development into a unified atlas. We describe the early milestones that have been achieved and the use of human stem-cell-derived cultures, organoids and animal models to inform the HDCA, especially for prenatal tissues that are hard to acquire. Finally, we provide a roadmap towards a complete atlas of human development.
Intra aortic balloon pump
The treatment of patients with advanced acute heart failure is still challenging.
Intra-aortic balloon pump (IABP) has widely been used in the management of
patients with cardiogenic shock. However, according to international guidelines, its
routinary use in patients with cardiogenic shock is not recommended. This recommendation is derived from the results of the IABP-SHOCK II trial, which demonstrated
that IABP does not reduce all-cause mortality in patients with acute myocardial infarction and cardiogenic shock. The present position paper, released by the Italian
Association of Hospital Cardiologists, reviews the available data derived from clinical
studies. It also provides practical recommendations for the optimal use of IABP in
the treatment of cardiogenic shock and advanced acute heart failure.
Left ventricular false tendons
Left ventricular false tendons (LVFTs) are fibromuscular
structures, connecting the left ventricular
free wall or papillary muscle and the ventricular
septum.
There is some discussion about safety issues during
intense exercise in athletes with LVFTs, as these
bands have been associated with ventricular arrhythmias
and abnormal cardiac remodelling. However,
presence of LVFTs appears to be much more common
than previously noted as imaging techniques
have improved and the association between LVFTs
and abnormal remodelling could very well be explained
by better visibility in a dilated left ventricular
lumen.
Although LVFTsmay result in electrocardiographic abnormalities
and could form a substrate for ventricular
arrhythmias, it should be considered as a normal
anatomic variant. Persons with LVFTs do not appear
to have increased risk for ventricular arrhythmias or
sudden cardiac death.
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