Is stable angina acute coronary syndrome. There are scarce data, however, ab...
Is stable angina acute coronary syndrome. There are scarce data, however, about comparisons of clinical characteristics and outcomes of these 2 groups of patients. Identify common assessment findings and clinical manifestations in clients with altered cardiac functioning 3. Abstract The term acute coronary syndrome (ACS) refers to any group of clinical symptoms compatible with acute myocardial ischemia and includes unstable angina (UA), non—ST-segment elevation myocardial infarction (NSTEMI), and ST-segment elevation myocardial infarction (STEMI). Over time, your heart receives less oxygen-rich blood. Acute coronary syndrome (ACS) is defined as reduced blood flow to the coronary myocardium manifesting as ST-segment elevation myocardial infarction or non–ST-segment elevation ACS, which Acute coronary syndromes result from acute obstruction of a coronary artery. Data Sources: A PubMed search was completed in Clinical Queries using the key terms unstable angina, acute coronary syndrome, NSTEMI, and STEMI. Other Types of Angina Not all angina fits into stable or unstable categories. May 5, 2023 · Understanding Chest pain Cardiac chest pain can be categorized into stable angina, unstable angina, non-ST-elevation myocardial infarction (NSTEMI) and ST-elevation myocardial infarction (STEMI) (2,3). Dissecting thoracic aneurysm Symptoms — sudden tearing chest pain radiating to the back and inter-scapular region. Acute coronary syndrome Why is myocardial ischemia usually reversible within 20 minutes of interruption of coronary blood flow? A. [1] The most common symptom is centrally located pressure-like chest pain, often radiating to the left shoulder [2] or angle of the jaw, and associated with nausea and sweating. This study aimed to evaluate the feasibility of CT assessment of plaque characteristics by comparing culprit lesions in acute coronary syndrome (ACS) patients with atherosclerotic plaques in stable angina pectoris (SAP) patients. Aug 30, 2024 · The current guidelines for managing chronic coronary syndromes (CCS) are intended to assist in diagnosing and initiating treatment for individuals with suspected CCS, as well as in the longterm management of patients with confirmed CCS. Prinzmetal's or vasospastic angina is a rare form of angina caused by narrowing or occlusion of proximal coronary arteries due to spasm, in which pain is experienced at rest rather than during activity. Patients with UA or NSTEMI are often evaluated by cardiac catheterisation during the hospitalisation to define disease extent; catheterisation within 12-72 hours is reasonable for stable high-risk patients. Abnormal vasodilation A. These result from the formation of a thrombus on an atheromatous plaque in a coronary artery, and while the presentation and management of these conditions is similar, there are important distinctions Mar 11, 2012 · Background: Recent studies have shown fondaparinux's superiority over enoxaparin in patients with non-ST elevation acute coronary syndrome (ACS), especially in relation to bleeding reduction. Coronary angiography is recommended to be done immediately in patients with refractory or recurrent angina associated with dynamic ST-deviation, heart failure, life-threatening arrhythmias or hemodynamic instability despite medical therapy. Common symptoms include chest pain or pressure (angina), shortness of breath and dizziness. Chronic Coronary Disease (CCD): Affects 55% of patients with chronic stable angina, characterized by atherosclerosis plaques in epicardial vessels. ACS is a medical emergency that needs prompt treatment. Sketchy Medical helps you learn faster and score higher on the USMLE Step 1 and Step 2 exams. 89. Have signs of complications (such as pulmonary oedema). Signs Feb 26, 2026 · Acute coronary syndromes refer to a spectrum of acute myocardial ischemia and/or necrosis usually secondary to reduction in coronary blood flow, including unstable angina (UA), non-ST-elevation myocardial infarction (NSTEMI), and ST-elevation myocardial infarction (STEMI). Jan 9, 2026 · Learn the key differences between stable coronary artery disease and acute coronary syndrome, including symptoms, causes, urgency, treatments, and when chest pain is a medical emergency requiring 999 care. STEMI and NSTEMI are types of myocardial infarction. This clinical paradigm fails to account for the considerable … Acute coronary syndrome (ACS) refers to a group of conditions that involve sudden, reduced blood flow to your heart. This article compares and contrasts the two. Written by a GP. Suspected acute coronary syndrome (ACS), who: Have current chest pain. Sep 5, 2000 · The term “syndrome X” is used to describe patients with angina or angina-like discomfort with exercise, ST-segment depression on treadmill testing, and normal or nonobstructed coronary arteries on arteriography. Mar 4, 2021 · Coronary artery disease accounts for > 30% of death in West and presents acutely as acute coronary syndromes. Describe assessment and screening measures related to alterations in cardiac function. A number of clinical observations support the utility of NT-BNP as a biomarker in the setting of an acute coronary syndrome. 140228 Acute coronary syndrome (ACS) refers to a group of conditions that involve sudden, reduced blood flow to your heart. Stable angina D. Any change in frequency, severity, duration, or triggers of angina requires prompt evaluation. Watch a free lesson about Stable Angina, Vasospastic Angina, & Acute Coronary Syndromes (UA, NSTEMI, STEMI) from our Cardiac unit. Feb 18, 2026 · Stable CAD a non-acute form of IHD that causes reversible myocardial ischemia chronic coronary disease [2] [3] Obstructive CAD ≥ 50% coronary artery stenosis [1] Nonobstructive CAD coronary arteries [1] Chest pain angina [1] [4] [5] causes of chest pain The patient's description of their symptoms may be used to inform the suspected cause of Acute Coronary Syndrome (ACS) refers to any condition attributed to obstruction of the coronary arteries which reduces blood flow to the heart, and includes unstable angina and myocardial infarction (MI). 4103/2321-449x. GUIDELINES FOR THE MANAGEMENT OF PATIENTS WITH NON-ST SEGMENT ELEVATION ACUTE CORONARY SYNDROME (NSTEACS) INCLUDING UNSTABLE ANGINA AND NON-Q WAVE MYOCARDIAL INFARCTION These guidelines represent the views of the Cheshire & Merseyside Strategic Clinical Network (CMSCN), which were arrived at after consideration of the available evidence, a review of relevant NICE guidelines and the development Acute coronary syndrome (ACS) is defined as reduced blood flow to the coronary myocardium manifesting as ST-segment elevation myocardial infarction or non–ST-segment elevation ACS, which Key Points Acute coronary syndrome (ACS, here defined as unstable angina and non-ST elevation MI) is characterised by episodes of chest pain at rest or with minimal exertion, which are increasing in frequency or severity often with dynamic ECG changes. Coronary microvascular dysfunction can be responsible for both stable angina and acute coronary syndrome (ACS). Mar 16, 2026 · Class I Indications (Strongest Evidence) Stable Ischemic Heart Disease Unacceptable ischemic symptoms despite guideline-directed medical therapy (GDMT) in patients amenable to and candidates for coronary revascularization 1 Acute Coronary Syndromes ST-Elevation Myocardial Infarction (STEMI): Primary PCI within 12 hours of symptom onset 1 Severe heart failure or cardiogenic shock in suitable Apr 4, 2023 · However, its safety and efficacy is unknown in the setting of coronary artery disease. Hemodynamically significant epicardial coronary artery disease in the LAD, defined as an FFR≤0. Key statistics: CHD accounts for ~43. Learn about the nursing priorities, diagnosis, and interventions for angina pectoris. Percutaneous intervention or coronary artery bypass grafting (CABG) is selected based on anatomy, comorbidities and technical factors. The writing committee acknowledges that care of patients with CCD is a continuum from postacute care in patients presenting with chest pain, acute coronary syndromes (ACS), or both to outpatient CCD-related management. These include ST-segment elevation myocardial infarction (STEMI), non-ST-segment elevation myocardial infarction (NSTEMI) and unstable angina. Find expert insights and prevention tips. [5] It has at least one of these three features: [13] it occurs at rest (or with minimal exertion), usually lasting more than Feb 27, 2025 · Key search words included but were not limited to the following: AHA/ACC Clinical Practice Guidelines; acute coronary syndrome (s); angina, unstable; anticoagulants; aspirin; atrial fibrillation; cardiovascular diseases; coronary artery disease (CAD); coronary syndrome; emergency medical services; fibrinolytic agents; hemorrhage; major adverse An unstable atherosclerotic plaque in the coronary arteries can cause which of the following complications? A. Describe the diagnostic studies and collaborative treatments involved with caring for a patient with coronary artery disease (stable angina and acute coronary syndromes). It often occurs at rest, sometimes at night, and can cause severe chest pain. The latter three are called acute coronary syndromes. Angina technically means chest or heart pain, and both stable and unstable angina occur due to low oxygenation of the heart. This happens due to a partial or complete blockage in one of your coronary arteries. Apr 16, 2023 · Acute Coronary Syndrome (ACS) Definitions - Stable Angina, Unstable Angina, NSTEMI, STEMI 1 STABLE ANGINA/chronic coronary syndrome - Angina pain develops when there is increased demand in the Feb 26, 2026 · Acute coronary syndromes refer to a spectrum of acute myocardial ischemia and/or necrosis usually secondary to reduction in coronary blood flow, including unstable angina (UA), non-ST-elevation myocardial infarction (NSTEMI), and ST-elevation myocardial infarction (STEMI). Oct 28, 2021 · Patients with acute or stable chest pain who are at intermediate risk or intermediate to high pre-test risk of obstructive coronary artery disease, respectively, will benefit the most from cardiac imaging and testing. Learn about the causes, symptoms and treatments for Angina. Myocardial infarction (MI): rise/fall in cardiac biomarkers (troponin) with at least one of the following: symptoms of ischaemia, ECG changes, imaging evidence of new myocardial damage, or intracoronary thrombus. Unstable angina B. Jun 20, 2018 · Acute coronary syndrome (ACS) is a term that describes when a blood clot forms inside the coronary arteries – there are two types: stable angina vs unstable angina. Are pain-free, but have had chest pain in the last 12 hours and have an abnormal electrocardiogram (ECG) or an ECG is not available. However, the yield of initial testing is low. Unstable angina is a form of acute coronary syndrome and requires immediate medical care. However, unstable angina is considered an acute coronary syndrome because it is an imminent precursor to myocardial infarction. Unstable angina unstable or crescendo angina, also known as acute coronary syndrome— is characterized by increased frequency and severity of attacks that result from a combination of atherosclerotic plaques, platelet aggregation at fractured plaques, and vasospasm. Feb 24, 2021 · The client is experiencing stable type of angina stable angina is characterized by discomfort and chest pains during physical exercise. Identify commonly used Nov 7, 2021 · Clinical presentation, management and in-hospital outcomes of Acute coronary syndrome patients in real world scenario in developing countries: Insight from a high volume tertiary care center in Oct 9, 2025 · Learn about Acute Coronary Syndrome, including its symptoms, causes, risk factors, and available treatment options. Increased blood levels of oxidized low density lipoprotein (ox-LDL) could play a role in these circumstances. Symptoms are similar in each of these syndromes (except sudden death) and include chest Jun 20, 2018 · Acute coronary syndrome (ACS) is a term that describes when a blood clot forms inside the coronary arteries – there are two types: stable angina vs unstable angina. Although it is not included under the umbrella of ACS, stable angina is categorised within ischaemic heart disease. Unstable Angina and Acute Coronary Syndromes Unstable angina represents a dangerous change in the pattern of chest pain and is considered part of the acute coronary syndrome (ACS) spectrum. While mortality and reperfusion rates were not affected, the pandemic was associated with a continual negative time trend for the uptake of secondary preventive medication. Myocardial infarction ACS indicates acute coronary syndromes; CABG, coronary artery bypass grafting MCS, mechanical circulatory support; MI, myocardial infarction; NSTEMI, non-ST-elevation myocardial infarction; STEMI, ST-elevation myocardial infarction; and PCI, percutaneous coronary intervention. Acute coronary syndromes result from acute obstruction of a coronary artery. 2. Hypertension D. Signs and symptoms Illustration of someone suffering coronary artery disease The most common symptom is chest pain or discomfort that occurs regularly with activity, after eating, or at other predictable times; this phenomenon is termed stable angina and is associated with narrowing of the arteries of the heart. We studied 47 Jun 24, 2025 · Stable angina is chest pain or discomfort that lasts up to five minutes and most often occurs when you’re exerting yourself or stressed. Consequences depend on degree and location of obstruction and range from unstable angina to non–ST-segment elevation myocardial infarction (NSTEMI), ST-segment elevation myocardial infarction (STEMI), and sudden cardiac death. Nov 18, 2020 · Overview This guideline covers the early and longer-term (rehabilitation) management of acute coronary syndromes. She initially underwent percutaneous coronary intervention (PCI) with a drug-eluting stent (DES) for severe stenosis of the proximal left anterior descending (LAD) artery. 140228 Case summary A 51-year-old woman with ET who was treated with anagrelide developed recurrent ACS caused by refractory vasospastic angina (VSA). The poor flow of blood is caused by narrowing of coronary arteries or a block as a result of blood clot. STEMI Diagnostic studies for acute coronary syndrome - 12 lead ECG *cannot diagnose ST changes with bedside (5 lead) monitor - Cardiac catheterization *radial or femoral catheter with dye, watching the pattern of how the dye goes through the arteries to visualize occlusions - Stress test *more for stable/unstable angina, supply and demand Terms in this set (41) what is included in acute coronary syndrome -unstable angina, STEMI and NSTEMI simply put, what is acute coronary syndrome a range of conditions resulting from sudden reduction in coronary blood flow to cardiac muscles cells Interprofessional and Nursing Care: Chronic Stable Angina Patients with chronic stable angina may develop unstable angina (UA) or acute coronary syndrome (ACS) if the usual pattern of angina changes. Dec 2, 2015 · Acute coronary syndrome (ACS): encompasses STEMI, NSTEMI, and unstable angina. Nov 18, 2020 · This guideline covers the early and longer-term (rehabilitation) management of acute coronary syndromes. Another form is microvascular angina Acute Coronary Syndrome Etiology and Pathophysiology Deterioration of once stable plague Rupture Platelet aggregation Thrombus - Chronic Stable Angina or - Acute Coronary Syndrome - Partial occlusion of coronary artery: UA or NSTEMI - Total occlusion of coronary artery: STEMI if a patient complains of chest pain, ALWAYS do nitro, ECG, and O2 Unstable angina (UA) (also " crescendo angina "; this is a form of acute coronary syndrome) is defined as angina pectoris that changes or worsens or begins suddenly at rest. 80 and/or NHPR≤0. Acute coronary syndrome C. Stable angina C. GUIDELINES FOR THE MANAGEMENT OF PATIENTS WITH NON-ST SEGMENT ELEVATION ACUTE CORONARY SYNDROME (NSTEACS) INCLUDING UNSTABLE ANGINA AND NON-Q WAVE MYOCARDIAL INFARCTION These guidelines represent the views of the Cheshire & Merseyside Strategic Clinical Network (CMSCN), which were arrived at after consideration of the available evidence, a review of relevant NICE guidelines and the development Nov 17, 2024 · The term 'acute coronary syndrome' (ACS) covers a range of disorders, including a heart attack (myocardial infarction) and unstable angina. The search included meta-analyses, randomized Acute coronary syndrome (ACS) encompasses a spectrum of conditions which include myocardial infarction with or without ST-segment-elevation (STEMI or NSTEMI respectively), and unstable angina. Key words: Albumin, left ventricular ejection fraction, all-cause mortality, stable coronary artery disease, percutaneous coronary intervention, prognosis Introduction Stable coronary heart disease (SCAD) refers to the presence of atherosclerotic plaques in the coronary arteries or is accompanied by uncomfortable symptoms of angina pectoris Apr 17, 2001 · Background—There is accumulating data that acute coronary syndromes relate to recent onset activation of inflammation affecting atherosclerotic plaques. Stable angina For information on the diagnosis of stable angina, see the CKS topic on Angina. In this article, we reappraise the causes of angina based on new insights into coronary pathophysiology. Coronary artery disease is the most common cause. Aug 30, 2024 · The 2019 ESC (European Society of Cardiology) Guidelines for the diagnosis and management of chronic coronary syndromes introduced the term chronic coronary syndromes (CCS)1to describe the clinical presentations of coronary artery disease (CAD) during stable periods, particularly those preceding or following an acute coronary syndrome (ACS). Methods and Results—Ox-LDL levels were measured in 135 patients with acute myocardial infarction (AMI; n=45), unstable angina The clinician taking care of the stable patient with CAD should utilise this information in the downstream assessment of patients in an out-patient setting. It is as a result of poor blood flow in the heart blood vessels during physical exercise. Fractional flow reserve (FFR) is an evidence-based diagnostic test of the physiological significance of a coronary artery stenosis. Acute coronary syndrome (ACS) is a syndrome due to decreased blood flow in the coronary arteries such that part of the heart muscle is unable to function properly or dies. [12] Unstable angina is a medical emergency and requires urgent medical treatment from a doctor. Apr 30, 2024 · Learn about the nursing care plan and management for patients with chest pain in this comprehensive guide. Oct 1, 2015 · The subsection for angina disorders is now titled “angina pectoris,” the subsection for acute coronary syndrome is now classified as “other acute ischemic heart disease,” and the subsection for post-infarctional angina is now categorized as “certain current complications following myocardial infarction”. This suggests anatomic testing such as computed tomography angiography assists in the identification of patients at higher risk for ACS, as opposed to physiologic tests such a stress testing. Aug 23, 2023 · Introduction In people presenting with stable chest pain or other symptoms suggestive of coronary artery disease (CAD), functional stress testing or anatomic coronary imaging is often performed as an initial evaluation step. You may need medicines or procedures to improve blood flow to your heart. 1. Acute coronary syndrome (unstable angina and myocardial infarction). Apr 2, 2023 · Abstract Coronary artery disease (CAD) is a leading global cause of morbidity and mortality, and improvements in the diagnosis and treatment of CAD can reduce the health and economic burden of this condition. For information on the diagnosis of acute coronary syndrome, see the section on acute coronary syndrome. For patients with unstable angina or NSTEMI, an angiography to identify sites of blockage may be done within 24 to 48 hours if the patient is clinically stable and the case is uncomplicated. Reference CONCLUSION: In Slovenia, hospital admissions for STEMI remained stable throughout the COVID-19 pandemic, but NSTEMI and unstable angina admissions dropped significantly. 🫀 Stable vs Unstable Angina — 🔵 Stable Angina Predictable chest pain with exertion or stress Lasts < 20 minutes Relieved by rest or nitroglycerin ST depression during pain Cardiac enzymes normal Managed with nitrates, beta-blockers, aspirin, statins. Stable coronary artery disease (CAD), or SIHD, refers to the syndrome of recurrent, transient episodes of chest pain reflecting demand-supply mismatch, that is, angina pectoris. 3 days ago · Angina - Canadian Cardiovascular Society Class II-IV on at least two anti-anginals or maximally tolerated medical therapy if less than two. For more information, see the section on Management while awaiting admission. The guideline aims to improve survival and quality Sep 7, 2025 · Stable and unstable angina both refer to chest pain due to a defect in the heart’s functioning. Acute Coronary Syndrome (ACS) refers to a spectrum of life-threatening conditions caused by sudden reduction in coronary blood flow due to plaque rupture and thrombus formation. Mar 31, 1998 · Unstable angina is classically described as a heterogeneous disease, referring to a wide spectrum of clinical manifestations from stable angina to MI, of disease processes from coronary vasospasm to thrombus formation, and of extent of CAD from no significant stenosis to severe three-vessel disease. Learn more. Acute coronary syndrome B. No conventional revascularization options or considered unsuitable as determined by the local heart team. Click HERE to save lives. It includes STEMI, NSTEMI, and Unstable Angina, which differ based on ECG findings and cardiac biomarker elevation. You may feel some symptoms, but you’re able to live with the condition day to day. 1 day ago · Chapter 20 Angina and Coronary Heart Disease (CHD) Study Guide Overview of Cardiovascular Disease Cardiovascular disease (CVD) includes several major conditions: Coronary heart disease (CHD) Heart failure Stroke Hypertension CVD remains one of the leading causes of morbidity and mortality in the United States. . Explore a comprehensive student guide on managing Acute Coronary Syndrome, focusing on assessment, intervention, and nursing roles in clinical scenarios. 🔴 Unstable Angina (Part of Acute Coronary Syndrome) Occurs at rest or minimal activity Increasing frequency/severity Lasts > 20 Coronary artery disease types There are two main forms of coronary artery disease: Stable ischemic heart disease: This is the chronic form. These high-risk manifestations of coronary atherosclerosis are important causes of the use of emergency medical Feb 26, 2026 · Acute coronary syndromes refer to a spectrum of acute myocardial ischemia and/or necrosis usually secondary to reduction in coronary blood flow, including unstable angina (UA), non-ST-elevation myocardial infarction (NSTEMI), and ST-elevation myocardial infarction (STEMI). 4 days ago · The key mind-set: stable angina is a plumbing problem you can reproduce and relieve by manipulating load and flow. Anatomically suitable for Mar 16, 2026 · Class I Indications (Strongest Evidence) Stable Ischemic Heart Disease Unacceptable ischemic symptoms despite guideline-directed medical therapy (GDMT) in patients amenable to and candidates for coronary revascularization 1 Acute Coronary Syndromes ST-Elevation Myocardial Infarction (STEMI): Primary PCI within 12 hours of symptom onset 1 Severe heart failure or cardiogenic shock in suitable Apr 4, 2023 · However, its safety and efficacy is unknown in the setting of coronary artery disease. Patients with stable angina pectoris may develop acute coronary events (acute myocardial infarction, unstable angina) at any time during the disease course. Dec 10, 2024 · The American Heart Association explains that acute coronary syndrome is an umbrella term for situations where the blood supplied to the heart muscle is suddenly blocked such as heart attack and unstable angina. Apr 1, 2023 · Incidence rates and test‐of‐trend for the risk of death and recurrent nonfatal acute coronary syndromes (ACS) of myocardial infarction or unstable angina, associated with quartiles of each biomarker. If you’re mastering clinical reasoning like this coronary series, make sure you’re also certified and ready for when ischemia turns into arrest. Variant angina (Prinzmetal’s angina) is caused by a spasm in the coronary arteries rather than plaque buildup. Some patients may experience an acute coronary syndrome as the first manifestation of their coronary artery disease. Sep 8, 2024 · Learn what acute coronary syndrome is, the types there are, its common symptoms, and more. Method and analysis: Low-dose interleukin-2 in patients with stable ischaemic heart disease and acute coronary syndromes is a single-centre, first-in-class, dose-escalation, two-part clinical trial. When acute coronary syndrome (ACS) strikes, it can mean a heart attack or unstable angina due to a sudden blockage of blood to the heart muscle. 4. Jul 20, 2023 · Where applicable and based on availability of cost-effectiveness data, value recommendations are also provided for clinicians. For information about unstable angina and myocardial infarction, see Acute coronary syndromes. 2% of cardiovascular deaths Mortality from CHD 4 days ago · Coronary Artery Stenosis: Refers to the narrowing of coronary arteries, leading to inadequate blood supply and oxygen to the heart, resulting in ischemic heart disease (IHD). Case summary A 51-year-old woman with ET who was treated with anagrelide developed recurrent ACS caused by refractory vasospastic angina (VSA). Unstable angina is thought to be the immediate precursor of a myocardial Jan 1, 2014 · Clinical characteristics, angiographic profile and in hospital mortality in acute coronary syndrome patients in south indian population January 2014 Heart India 2 (3):65 DOI: 10. The guideline aims to improve survival and quality of life for people who have a heart attack or unstable angina. Your coronary arteries gradually narrow over many years. Rest and nitroglycerin can treat an episode as it’s happening. Stable Angina Pectoris | Acute Coronary Syndromes Germany Medispec Heart and Diabetes Center North-Rhine Westfalia Unknown Extracorporeal Shockwave Therapy for the Treatment of Refractory Chronic Angina Pectoris Refractory Angina Pectoris Germany RWTH Aachen University Completed Coronary Artery Disease (CAD) in Postmenopausal Women (FEMCAD) Aug 25, 2023 · Tables of Recommendations Recommendation Table 1 — Recommendations for clinical and diagnostic tools for patients with suspected acute coronary syndrome 3738 Recommendation Table 2 — Recommendations for non-invasive imaging in the initial assessment of patients with suspected acute coronary syndrome 3742 Recommendation Table 3 — Recommendations for the initial management of patients with 6 days ago · A. Angina is a pain symptom felt in your chest, usually caused by coronary heart disease. Approximately 50% of patients with unstable angina progress to myocardial infarction within 30 days if left untreated. We studied 47 Nov 5, 2020 · Acute coronary events (acute coronary syndrome [ACS]) are usually associated with plaque disruption which is associated with the atherosclerotic burden. The diagnostic management of patients with angina pectoris typically centres on the detection of obstructive epicardial CAD, which aligns with evidence-based treatment options that include medical therapy and myocardial revascularisation. mphiq mjsql bfvld xxkcc escp ffnc rmam mzac qipgun mryxow