…younger and more often female than patients with atherosclerotic mediated myocardial infarction. A history of cigarette smoking may be present despite relatively few other conventional…

…restenosis and stent thrombosis. Intravascular imaging may also clarify the mechanism of an acute coronary syndrome (ACS), particularly when angiography shows no significant obstructive disease…

…Deasy et al ). A complete airway obstruction results in PEA and cardiac arrest within 8 minutes. Cardiac arrest as a result of asphyxia or hypoxia…

…thrombus and other structural features that may not be evident on angiography alone. It is particularly useful when ACS occurs without significant obstructive CAD or…

…Epicardial and microvascular angina can coexist, and this combination is associated with a worse prognosis. VA may occur in the presence of obstructive coronary artery…

…and cardiac amyloidosis using appropriate radiopharmaceuticals. Functional perfusion imaging primarily identifies haemodynamically important disease. Non obstructive coronary atherosclerosis not associated with demonstrable ischaemia may therefore…

…or delayed approach is recommended in this setting unless other findings justify urgent intervention. Risk scores Several risk scores integrate clinical, ECG, and biomarker variables…

…severe hypotension, or high degree AV block. Caffeine and other methylxanthines, which antagonize adenosine receptors, should be avoided for at least 12 hours before testing…

…or other professionals. A physician is always formally responsible for conducting the test. All personnel must be appropriately trained and the laboratory must be equipped…

…appropriate when: The pre test likelihood of obstructive CAD is moderate or high, generally greater than 15% and less than 85% Baseline ECG abnormalities make…

…mellitus (both type 1 and type 2), obesity, smoking, obstructive sleep apnea and chronic obstructive pulmonary disease (COPD). Moreover, certain other tachyarrhythmias predispose to developing…

…disease. Contributing factors include pulmonary disorders, particularly obstructive pulmonary disease, the use of theophylline, and elevated catecholamine states. EAT typically has an abrupt onset, although…

…attention. The ventricular rate is typically very high (100–250 beats per minute) and cardiac output is affected (i.e reduced) in virtually all cases…

…administration, warnings, precautions, and other relevant information for the drug Ticagrelor . Table 1 Summary Indications Ticagrelor, in combination with acetylsalicylic acid (ASA), is indicated for…

…Mechanical obstruction of the bowel or the urinary tract. Marked bradycardia, sick sinus syndrome or high grade AV block without pacemaker protection. Asthma and other…

…in a mechanical valve prosthesis and in moderate to severe mitral stenosis, where warfarin applies. Apixaban is often preferred, among other reasons because it has…

…Interactions Pharmacodynamic interactions Anticoagulants, thrombolytics, or other platelet aggregation inhibitors: Salicylates inhibit platelet function and enhance the effect of anticoagulants, increasing bleeding risk. Monitor coagulation…

…Contraindications Asthma and COPD. Adenosine has caused mild to moderate exacerbation of asthma symptoms. Adenosine should be used with caution in patients with obstructive lung…

…obstructive. Atherosclerotic plaque accumulation in the epicardial arteries is a major pathological substrate, but ischaemia may also result from epicardial vasomotor abnormalities or structural and…

…or immediately after PCI. The clinical presentation depends on the extent of microvascular obstruction and the territory supplied by the treated vessel. Possible manifestations include…

…Other mechanisms capable of obstructing coronary arteries include embolism, dissection, coronary arteritis associated with systemic vasculitis, extrinsic compression, myocardial bridging and radiation induced coronary disease…

…haemodynamic collapse, and death. The clinical consequences are particularly important when pulmonary vascular obstruction is accompanied by limited cardiopulmonary reserve or other adverse comorbidity. The…

…or silent STEMIs is greater in patients with diabetes mellitus and increases with age. STEMI may present as sudden onset breathlessness. Other less common presentations…

…likewise affected by inflammation and other systemic influences. The severity of myocardial injury is determined not only by the epicardial obstruction but also by the…

…atherosclerosis is the predominant cause. Other mechanisms include thrombosis, embolism, vasculitis, fibromuscular dysplasia, arterial entrapment, cystic adventitial disease and trauma. Atherosclerotic PAD is a manifestation…

…reflects an imbalance between myocardial oxygen supply and demand. In many cases, the initiating process is plaque disruption with thrombosis; other cases result from spasm…

…In addition, some patients present with severe LMCA stenosis exacerbated by other conditions, and these must also be recognized. Prompt identification of LMCA involvement is…

…and venous filling may be reduced. Other possible findings include muscle stiffening and loss of deep tendon reflexes. Pulses are absent distal to the obstruction…

…arrest. Within the context of pregnancy, hypovolemia and other etiologies of hypotension remain the predominant causes of cardiac arrest. Should cardiac arrest occur postpartum, hemorrhage…

…may originate from other branches of the same coronary artery or another coronary artery, will alleviate the ischemia, improve myocardial function and increase resistance to…

…Other causes include acute mechanical complications—particularly ventricular septal defect (VSD) and papillary muscle rupture with acute severe mitral regurgitation—predominant right ventricular (RV) infarction…

…6. Assess the indication for antibiotics on the basis of sputum purulence, the other cardinal symptoms and the severity of the illness. 7. Start NIV…

…staging, and treatment directed at both the cause and the severity [1]. Three questions must be answered immediately: 1. Is there obstruction to urine flow…

…Polypoid myxoma usually causes haemodynamic complications due to obstruction. Papillary myxomas are small; they have a more stretched appearance and most often exhibit multiple villi …

…Other causes of ventricular dilation ( e.g ischemic cardiomyopathy) must be excluded before establishing a diagnosis of DCM. Patient characteristics, clinical features, family history and…

…alkali) — it makes endoscopic assessment more difficult and causes vomiting Medicinal charcoal Petroleum products — vomiting with chemical pneumonitis as a consequence Medicinal charcoal Bowel obstruction…

…sensitivity is low). U wave changes always accompany other ischemic ST T changes. They may occur in both NSTEMI and STEMI. QTc prolongation The QT…

…However, other inheritance patterns, de novo variants, incomplete penetrance and variable phenotypic expression complicate risk prediction. Familial clustering may also reflect shared environmental or behavioural…

…Non HDL C and apoB are secondary targets or risk refining measures, particularly in patients with: Diabetes or other cardiometabolic risk factors Obesity Insulin resistance…

ECG Myocardial ischemia and infarction Myocardial ischemia: cellular changes, ECG signs and development of infarction Like all other cells in the human body, cardiac myocytes…

…STEMI and other ECG patterns suggesting acute coronary occlusion are time dependent conditions. The decision on immediate reperfusion is based on symptoms, the ECG and…

…drugs . The diagnosis rests on the history, a positive Dix–Hallpike test and the absence of other neurological findings. The treatment is a repositioning manoeuvre…

…and progression of atherosclerotic disease in patients with established coronary or other atherosclerotic vascular disease. Antiplatelet therapy is a central component because platelet activation and…

…containing lipoproteins, including: LDL Intermediate density lipoprotein (IDL) Lipoprotein(a) [Lp(a)] Very low density lipoprotein (VLDL) Chylomicrons and other triglyceride rich particles Thus, non…

…effect is relatively limited compared with agents that inhibit other platelet pathways. The distinction between primary and secondary prevention is fundamental: Primary prevention refers to…

…peripheral artery disease (PAD), and other manifestations of systemic atherosclerosis. The principal clinical concern is cerebral embolism or haemodynamic compromise leading to transient ischaemic attack…

…Other life threatening cardiopulmonary conditions account for approximately 5% of presentations in some populations. Despite this relatively low prevalence, missed myocardial infarction remains consequential, and…

…Study, which demonstrated that high blood pressure and high cholesterol levels, among other risk factors, were strongly associated with coronary artery disease and myocardial infarction…

…syndrome (ACS), DAPT is used to reduce recurrent myocardial infarction, stent thrombosis and other ischemic events after coronary angiography, percutaneous coronary intervention (PCI), or medical…

…and cerebral involvement. Catecholamine excess and drug related presentations Severe hypertension may result from phaeochromocytoma, monoamine oxidase inhibitor crisis, cocaine intoxication, or other sympathomimetic exposure…

…ventricular dysfunction, peripheral vascular disease and other manifestations of diffuse atherosclerosis. Percutaneous coronary intervention (PCI) and coronary artery bypass grafting (CABG) are revascularization procedures. Both…

…other inhaled nicotine products. In cardiovascular medicine, the objective is not merely to reduce cigarette consumption but to achieve complete abstinence from tobacco and ultimately…

…with a paper speed of 25 mm/s, which is standard in the US and many other countries, a 2:1 block will be difficult…

…has low sensitivity with respect to detecting biventricular hypertrophy. This is because the strong and oppositely directed forces tend to cancel each other out. However…

…segment elevations that are not caused by ischemia and a significant proportion have ST T changes caused by other pathological conditions (such as bundle branch…

…and the other for analyzing reflected sound waves. The cardinal difference between continuous wave Doppler and pulsed wave Doppler is that ultrasound is emitted and…

…annihilate each other, producing two gamma photons emitted in opposite directions. PET scanners detect these gamma rays to construct images with high spatial and temporal…

…on the other hand, are much less likely to be caused by ischemia ( Figure 1 B ). This is noted in both North American and European…

…electrically dissociated from each other. This condition is referred to as atrioventricular (AV) dissociation. Importantly, for the ventricles to have any electrical (and thus pumping)…

…index 15–19 kg/m² 17–22 kg/m² Ideal and dosing weight Drug dosing often requires a weight other than the actual body weight…