…than the right ventricle. This is the result of ventricular adaptation to the resistance that must be overcome by the ventricles. The left ventricle must…

…than the right ventricle. This is the result of ventricular adaptation to the resistance that must be overcome by the ventricles. The left ventricle must…

…assess drugs or substances that may increase blood pressure. The source material does not provide an exhaustive list of such agents. Resistant hypertension Resistant hypertension…

…the right atrium is commonly a consequence of increased resistance to empty blood into the right ventricle. This may be due to pulmonary valve stenosis…

…resistance and oxygen transport Formulas Mean arterial pressure (MAP) = diastolic + (systolic − diastolic)/3 Cardiac output = stroke volume × heart rate SVR = 80 × (MAP…

…Stroke Volume, Wall Stress & Frank Starling's law Myocardial Mechanics It is fundamental to distinguish hypertrophic cardiomyopathy from hypertrophy caused by increased loading conditions. The…

Hydralazine Hydralazine is not preferred for hypertensive emergencies due to the high risk of reflex sympathetic stimulation. Drug Hydralazine Brand names Apresoline ®, Bidil ®…

…As the valve area becomes smaller, the transvalvular resistance increases, making it more difficult to eject blood into the aorta. In the early stages of…

…Pathophysiology of pulmonary embolism (PE). Hemodynamic effects Pulmonary embolism leads to increased resistance in the main pulmonary artery, and thereby increased afterload on the right…

…trauma over the insertion site. Insufficient collateral circulation to the hand. Vascular disease in the limb: marked peripheral arterial disease, Raynaud's phenomenon, thromboangiitis obliterans…

…schedule applicable to all patients; the regimen must be individualized based on the clinical situation and arrhythmia severity. Because of the drug's unusual pharmacokinetics…

…organ damage or failure. Any of the drugs listed below may be used to treat hypertensive emergencies. The desired time to action, contraindications and risk…

…organ damage or failure. Any of the drugs listed below may be used to treat hypertensive emergencies. The desired time to action, contraindications and risk…

…width) is usually set to 0.5 ms. The relationship between current (I), voltage (V) and resistance (R) is described by Ohm's law: V…

…or visceral, adipose tissue is more closely related to insulin resistance and the risk of diabetes and cardiovascular disease than total adiposity alone. The waist…

…but the meatus can be hard to find in older women. Two things separate the safe catheterisation from the harmful one: never forcing against resistance…

…vasoactive agents are categorised according to their distinct pharmacodynamic mechanisms. These drugs are broadly utilised to augment myocardial contractility, manipulate systemic and pulmonary vascular resistance…

…drugs in blood or urine. The terms “controlled resistant hypertension,” referring to blood pressure controlled with four or more medications, and “refractory hypertension,” referring to…

…overcoming the aortic resistance, which is typically 110 mmHg or more. It is straightforward to understand why systolic function is fundamental to global cardiac function…

…Resistance may increase in, for example, pulmonary hypertension or pulmonic stenosis. Heart rate . Synchronicity : Optimal contraction requires the majority of all ventricular myocardium to contract…

…not directly quantify the ability of the myocardial resistance vessels to augment flow. Coronary flow reserve and its relationship to FFR Coronary flow reserve (CFR)…

…Nitroprusside Figure 1. The approximate position of each drug according to its vasoconstrictor effect (vertical axis) and its positive inotropic effect (horizontal axis). Grey =…

…A pot of 4 % formalin, and for immunofluorescence Michel's medium or saline according to local procedure. Photograph and draw in the site before the…

…insulin resistance, free fatty acid synthesis and very low density lipoprotein production. Cyclosporine raises LDL cholesterol, partly by reducing LDL receptor availability. Tacrolimus appears to…

…injection under fluoroscopy. The procedure is performed by advancing guidewires and diagnostic catheters from a percutaneous arterial access site to the aortic root, engaging the…

…in whom objective myocardial ischaemia is demonstrated. ANOCA may occur in up to 70% of patients undergoing invasive coronary angiography, while approximately 25% of these…

…overload Pressure overload (systolic overload) implies that there is increased resistance across the aortic valve, making it more challenging to pump blood into the aorta…

…trials as noninferior to FFR; enables hybrid gray zone strategies (measure FFR only when iFR/RFR is indeterminate). Resting resistance only approximates hyperemic resistance — ~15…

…). Afterload Afterload is the resistance that the left ventricle must overcome to eject blood into the aorta. Afterload affects myocardial muscle fibers during systole and…

…venous pressure, pulmonary capillary wedge pressure and systemic vascular resistance increases. Harmful neurohormonal pathways are activated, similar to those seen in heart failure. A thorough…

…therapy Nonadherence or discontinuation of clopidogrel or DAPT, reduced clopidogrel bioavailability, hyporesponsiveness or resistance to aspirin or clopidogrel Anatomic Long lesions, small vessels, multivessel disease…

…will alleviate the ischemia, improve myocardial function and increase resistance to episodes of more severe myocardial ischemia. Collateral circulation may be very effective in reducing…

…leads to vasoconstriction through the release of norepinephrine, while parasympathetic activation can cause vasodilation via acetylcholine release. These mechanisms collectively modulate coronary vascular resistance to…

…residential care homes (SÄBO) 2025/2026. They are Swedish regional recommendations and reflect Swedish resistance patterns and formulary availability; check what applies where you work…

…movement until a clear resistance is felt — the tip of the cuff then lies at the oesophageal inlet. 6. Inflate the cuff to a seal…

…A wound that has not been irrigated clean, has not been inspected to its depth, and has not been assessed for tendon and nerve injury…

Clevidipine Drug Clevidipine Brand names Cleviprex ® Indications Hypertension and hypertensive emergency. Treatment of postoperative hypertension. Mechanism of action Ultra short acting calcium channel blocker…

…Hemodynamic determinants of MAP Hemodynamically, MAP is influenced by cardiac output (CO) and systemic vascular resistance (SVR), as described by the relationship: MAP = (CO…

Nicardipine Drug Nicardipine Brand names Cardene ® Indications Hypertension, hypertensive emergency/crisis. Pregnancy induced hypertension. Angina pectoris Prinzmetal's angina Mechanism of action Nicardipine is…

…in which adiposity, insulin resistance, diabetes, hypertension, CKD and CVD reinforce one another. Dysfunctional adipose tissue contributes to inflammatory and metabolic abnormalities, while CKD promotes…

…methods may also contribute. The cardioprotective effect is therefore likely to result from the cumulative influence of multiple modest dietary changes. Mediterranean type diets provide…

…myocardial wall stress and subendocardial ischemia. Neurohormonal activation and vascular and renal abnormalities contribute to sodium and water retention. The interaction between cardiac and renal…

…mechanisms may coexist, diagnosis and classification must integrate haemodynamics with the patient’s clinical context and the results of all relevant investigations. Haemodynamic definition At…

…to an immediate increase in ejection fraction. Similarly, a decrease in afterload (e.g by means of decreased resistance in the systemic circulation) leads to…

…This is due to the fact that the left ventricle pumps against greater resistance and any disturbance in ventricular activation will reduce the efficiency of…

…By definition, the PR interval is 0.22 s. However, all impulses are conducted to the ventricles. First degree AV block is rarely serious and…

…because the right ventricle is difficult to visualize clearly with trans thoracic echocardiography. Causes of right ventricular hypertrophy Lung disease (with increased pulmonary vascular resistance)…

…Hence, a proximal occlusion (in the RCA) which cuts off blood flow to the right ventricle, will also affect the inferior wall of the left…

…the right atrium is commonly a consequence of increased resistance to empty blood into the right ventricle. This may be due to pulmonary valve stenosis…

…with the stylet in place perpendicular to the bone surface, angled slightly anteriorly and medially. Rotate under steady pressure until the resistance suddenly gives way —…

…workload controlled resistance; 12 lead ECG with continuous recording; automated or manual blood pressure measurement. Resuscitation trolley with defibrillator, oxygen, suction and emergency drugs in…

…postoperatively after major abdominal surgery, according to local practice. Enteral nutrition and drug administration when the patient cannot swallow safely, for example after a stroke…

…between regimens. Neutropenia can also be caused by haematological malignancy, stem cell transplantation, immunosuppressive drugs, radiotherapy, bone marrow failure and certain targeted cancer treatments. Fever…

…60 minutes after ingestion. Elimination follows zero order kinetics at low to moderate concentrations and first order kinetics at higher concentrations. Ethanol is water soluble…

…as commonly occurs with obesity, diabetes, prediabetes, insulin resistance, metabolic syndrome, and hypertriglyceridaemia. Because triglyceride rich particles contribute additional cholesterol—often approximately 30 mg/dL…

…Smoking and insulin resistance are associated with both RA and cardiovascular risk. Dyslipidaemia may be difficult to interpret during active disease: inflammatory cytokines can lower…

…dL). The proportional reduction in cardiovascular risk is related to the absolute reduction in LDL C, regardless of the drug used to achieve it. Absolute…

…and ectopic fat are particularly relevant to cardiovascular risk. Excess adipose tissue promotes: Chronic, low grade systemic inflammation Insulin resistance Abnormal adipokine signalling Endothelial dysfunction…

…a corticosteroid is to be given: hold the needle still, change the syringe and inject. The injection should go in easily. Resistance means the tip…

…or 3 hypertension Resistant hypertension Sustained blood pressure above 150/100 mm Hg on repeated measurements Hypertension requiring at least four antihypertensive drugs despite control…