…coma. As above but with lower temperatures. Electrolyte replacement. Large infusions of fluids are typically needed. Table 1. Grading of hyperthermia. Body temperature should decrease…

…FiO₂ 53 kPa ( 400 mmHg) Alveolar gas equation PAO₂ = FiO₂ × (Patm − PH₂O) − PaCO₂/R R ≈ 0.8 A–a gradient PAO₂ − PaO₂ < 2…

…Heightened awareness is essential in patients with severe aortic stenosis, particularly the low flow, low gradient phenotype, or those undergoing aortic valve replacement [1, 5…

…cells. The resulting voltage gradient between normal and ischaemic myocardium generates currents of injury that are expressed on the surface ECG as ST segment displacement…

…the S3 segment. SGLT2 also mediates proximal tubular sodium reabsorption, with chloride following passively down the resulting electrochemical gradient. By inhibiting SGLT2, these drugs produce…

…term outcomes. Patients with low flow low gradient aortic stenosis (discussed below) have a 3 year survival rate of 50% ( Eleid et al ). The cause…

…in the parasternal short axis view. Pressure gradient and pressure half time (PHT) are also estimated using continuous Doppler. A dense regurgitant jet with rapid…

…derived as follows: area PA = (area RVOT × VTI RVOT ) / VTI PA Table 2. Grading of pulmonic stenosis. Grading of pulmonic stenosis Maximum gradient Maximum…

…PHT) exceeds 190 ms in pronounced stenosis. Mean pressure gradient 5.0 mmHg suggests a clinically significant stenosis. Tricuspid stenosis results in increased right atrial…

…and can often be used for an initial assessment of pH and the metabolic component, but it should not be regarded as fully interchangeable with…

…a valve area < 1.0 cm² with a mean gradient ≥ 40 mmHg. Fluid responsiveness Static measures such as the CVP predict fluid responsiveness poorly…

…parameters Aortic sclerosis Mild stenosis Moderate stenosis Severe stenosis Mean gradient (mmHg) < 20 20 40 40 Peak velocity (m/s) 1,8 2,5…

…over the next 5 years. The calculator is widely used in clinical practice and is endorsed by major cardiology guidelines, including those from the European…

…Typically used as emergency bolus to correct acute hypotension. Hypotension (any) Used to increase MAP during hypotension in aortic stenosis. Used to decrease LVOT gradient…

…Mean gradient < 5 mmHg 5 10 mmHg 10 mmHg Additional parameters Mild stenosis Moderate stenosis Severe stenosis Pulmonary artery pressure <30 30 50 50…

…stenosis Mild stenosis Moderate stenosis Severe stenosis Peak velocity (m/s) < 3 43528 4 Peak gradient (mmHg) < 36 36 64 64 References 1…

…– Pubmed Link Tricuspid valve stenosis Mean pressure gradient ≥ 5 mmHg Valve area according to the continuity equation (cm²) ≤ 1 cm² ZTime velocity integral of the…

…– Pubmed Link Tricuspid valve stenosis Mean pressure gradient ≥ 5 mmHg Valve area according to the continuity equation (cm²) ≤ 1 cm² ZTime velocity integral of the…

…Mitral flow velocities are measured using Pulsed Doppler. Tissue Doppler is used to measuring mitral annular plane velocity. The American Society for Echocardiography (ASE) and…

…gradient Recent stroke or transient ischemic attack Mental impairment with limited ability to cooperate Resting hypertension with systolic or diastolic blood pressures 200/110 mmHg…

…Typically used as emergency bolus to correct acute hypotension. Hypotension (any) Used to increase MAP during hypotension in aortic stenosis. Used to decrease LVOT gradient…

…the E wave . As blood flows into the left ventricle, the pressure gradient between the left atrium and the ventricle diminishes, and the passive filling…

…= 4v 2 2 This equation is also referred to as the modified Bernoulli equation . ΔP is the pressure gradient (mmHg) across a valve…

…or predicted 33 to 50 percent Under 33 percent, or unmeasurable Saturation on air Usually at least 92 percent May be below 92 percent Hypoxaemia…

…is the first line treatment and must be given early when anaphylaxis is suspected. Do not wait for a complete diagnosis or for grading. Antihistamines…

…dangerous than a corresponding stable chronic value [4]. The grading must not be used mechanically. A patient with a plasma potassium of 6.2 mmol…

…is a warning sign of impending overcorrection. Grading Hyponatraemia is defined as a plasma sodium below 135 mmol/L. The biochemical grade alone does not…

…A D dimer must not be used to rule it out The age adjusted D dimer in patients over 50: the threshold becomes age × 10…

…the analysis of electrolyte levels. Electrocardiography (ECG) serves as a valuable tool for detecting and assessing the severity of electrolyte disturbances, particularly before laboratory results…

Echocardiography The Continuity Equation: What Goes In Must Come Out As previously discussed, stroke volume is usually calculated by measuring area and VTI (velocity time…