…between regions. Common practice is correction at an INR above 1.5 and a platelet count below 50 × 10⁹/L before drain insertion, while diagnostic…

…and a collection container. Sample tubes: an EDTA tube for the cell count, a serum tube for albumin, protein and LDH, and two blood culture…

…because it can increase blood pressure and may affect interpretation of the clinical picture. A 24 hour urine collection for electrolytes can be used to…

…vasopressor therapy . Potential vasopressor agents include: Norepinephrine Phenylephrine Vasopressin Prioritize the collection of blood cultures to identify potential pathogens and guide antimicrobial therapy. Administer broad…

…syndrome in which increased intrapericardial pressure compresses the heart and impairs ventricular filling. It generally results from accumulation of pericardial fluid, blood, or, less commonly…

…Hyponatremia (<48 hours duration): Rapid correction is preferred. An increase of 1 2 mEq/L per hour for a total of 4 6 mEq/L…

…temporal association is present; contrast induced AKI should be reserved for the smaller subgroup in which iodinated contrast is considered causally responsible. This distinction is…

…QTc interval 480 is always considered pathological. For patients with bundle branch blocks, the corresponding figure is 500 ms. The QT interval represents the time…

…mechanism. Sequential activation implies that the atria are activated first and they fill the ventricles with adequate volumes of blood before ventricular contraction commences. To…

…failure. A peripheral venous blood gas is easier to obtain and can often be used for an initial assessment of pH and the metabolic component…

…by home measurement or 24 hour recording — the thresholds for which are lower than for office measurement. Classification of office blood pressure Category Systolic Diastolic : : :…

Procedurer The most serious transfusion accidents rarely stem from laboratory errors but from the wrong blood being given to the wrong patient — a mislabelled tube…

Cardiology Clinical medicine Definition and Clinical Context Blood pressure management in older adults must account for chronological age, biological age, frailty, multimorbidity, cognitive status, functional…

…dialysis fistula in both arms, an arm circumference too large for the available cuffs, and in a patient who does not tolerate repeated compression (for…

…Conversely, a rapid rise in blood pressure from a previously low level can cause organ damage at lower values, for example in pregnancy, acute glomerular…

…For example, if the perceived exertion is 12, then 12 x 10 = 120; so the heart rate should be about 120 beats per minute…

…regions with reduced blood flow. Radiotracers for SPECT Technetium 99m (Sestamibi or Tetrofosmin): With a six hour half life allowing high doses for better image…

…Reference values for coronary blood flow Normal coronary blood flow at rest: 0.6 to 1.3 mL/min/g of myocardial tissue During hyperemia…

…immediate blood pressure lowering treatment is required. Patients with suggestive symptoms, signs or a medical history indicating possible secondary hypertension should undergo appropriate screening for…

Cardiology Emergency medicine Definition and Pathophysiology A hypertensive emergency is severe blood pressure elevation accompanied by acute hypertension mediated target organ damage (HMOD). The European…

…Haemodynamic measurements become interpretable only when related to one another. A low blood pressure may be due to low flow, low vascular tone or both…

…that the aortic valve leaks during diastole, such that blood regurgitates back from the aorta into the left ventricle. This results in volume overload in…

CPR Hypoxia and asphyxiation Hypoxia refers to a reduced partial pressure of oxygen in the blood. Asphyxia is characterized by insufficient ventilation, leading to hypoxia…

…volumes, and pressure conditions in the heart. These techniques allow for the calculation of all clinically relevant hemodynamic parameters, with few exceptions. Prior to the…

…Pedalling rate 50–70 revolutions per minute, kept steady. 3. ECG continuously , with a printout every minute and on symptoms. 4. Blood pressure every second…

…Where serious poisoning is suspected, blood and urine can be saved early for later targeted analysis. Initial monitoring and investigations Investigation Comment : : Plasma glucose Taken…

…nitroglycerin regularly may have developed tolerance and require higher doses, alternatively nitroprusside to achieve desirable blood pressure lowring effect. Drug Nitroglycerin Brand names Gonitro ®…

…Pulmonary hypertension. Blood pressure control. Mechanism of action Nitroprusside provides nitric oxide (NO) that induces vasodilatation of both arterioles and veins via generation of cyclic…

…crisis. Mechanism of action Phentolamine is a non selective alpha adrenergic blocker. Phentolamine reduces blood pressure while increasing catecholamine activity. Effects Primarily causes afterload reduction…

…40% or has declined from at least 50%. This distinction is clinically important because the strongest evidence for the four pillar disease modifying strategy applies…

…failure (HF) is a clinical syndrome in which the heart cannot deliver blood at a rate appropriate to tissue requirements unless filling pressures are elevated…

…insulin resistance, dyslipidaemia, elevated blood pressure and impaired glucose regulation. Diagnosis is based on the coexistence of defined clinical and laboratory components; the diagnostic criteria…

…a distinct disease. It identifies patients whose blood pressure remains uncontrolled despite intensive antihypertensive treatment and who therefore require assessment for pseudo resistance, secondary hypertension…

…and infarction Definition and conceptual framework Acute coronary occlusion is the abrupt or progressive reduction of coronary blood flow sufficient to produce myocardial ischaemia and…

Echocardiography Tissue Doppler (Tissue Velocity Imaging) Previous chapters on Doppler imaging have all focused on measurements of blood flow. However, the Doppler effect can also…

…risk of hypercapnia and a normal blood gas Usually 94 to 98 percent An individually documented target prescription, for example in chronic hypercapnia Follow the…

…dose, time of the bolus and the blood pressure before administration. 12. Prepare for the monitoring and management of intracranial haemorrhage and angioedema. First of…

…criteria for intermediate care or intensive care. Time course after the last intake The times given are approximate. Symptoms can begin before the blood alcohol…

…without delay, in any of the following: A systolic blood pressure < 90 mmHg caused by the arrhythmia. Ongoing myocardial ischaemia with chest pain and…

…allows frequent blood pressure measurement and continuous monitoring. An arterial line is often appropriate when very rapid or precise control is required, for example in…

…around 1,500 mL or more with continuing bleeding, or a smaller measured blood loss if there is physiological compromise. Do not wait for hypotension…

…septic shock, or a need for high dependency or intensive care 3 Take at least two sets of blood cultures from separate peripheral punctures. Also…

…across the aortic valve. Trace the Doppler profile to calculate the AV VTI, representing the distance blood travels during systole. 3. Right Ventricular Outflow Tract…

…required to up to 900 μg/day. Transdermal (one patch lasts for a week): • Catapress TTS 1 (0.1 mg/24hrs). • Catapress TTS 2 …

…an angiotensin converting enzyme (ACE) inhibitor. Enalaprilat lowers blood pressure by inhibiting ACE. Effects • The hypotensive effect of enalaprilat depends on plasma volume and plasma…

…beta adrenergic receptor blocker. • Esmolol lowers blood pressure immediately (within 1 minute) • Esmolol may also be used to control supraventricular tachycardia (rate control). • Esmolol may…

…Effects Dopamine 1 receptor agonists lower systemic blood pressure and increase renal perfusion. Time to onset of action 50 to 10 minutes Duration of action…

…provided for use in patients with hypertensive emergency (also referred to as hypertensive crisis or malignant hypertension ). Hypertensive emergency is defined as significantly elevated blood…

…the formula: MAP ≈ Diastolic Blood Pressure (DBP) + 1/3 × (Systolic Blood Pressure [SBP] – DBP) This formula accounts for the longer duration of diastole compared to…

…blocker. Effects Lowers blood pressure, reduces heart rate, myocardial oxygen consumption and myocardial contractility. Less pronounced blood pressure lowering effect than esmolol and labetalol. Time…

…ischaemia (ALI) is an abrupt reduction in arterial perfusion of an upper or lower limb that causes tissue metabolic requirements to exceed available blood flow…

…In acute PE, obstruction of pulmonary blood flow increases RV pressure load and may impair RV filling and forward output. The resulting syndrome may progress…

…limiting adrenergic stimulation. When prescribed for antianginal purposes in CCS, the target resting heart rate is generally 55–60 beats per minute. Beta blockers also…

…and/or the coronary microcirculation. These abnormalities may produce a transient mismatch between myocardial oxygen demand and coronary blood supply, resulting in myocardial hypoperfusion or…

…completely different. It took roughly 50 years for researchers to finally conclude that high cholesterol levels caused coronary artery disease and atherosclerosis in general. This…

…compartments. Heart failure is defined physiologically by the inability of the heart to provide blood flow appropriate to tissue requirements unless filling pressures are elevated…

…predictors of mortality in patients with cardiovascular disease after accounting for age. Chronotropic response, blood pressure behaviour and the development of arrhythmias provide additional information…

…be initiated concurrently. In patients with a confirmed indication for treatment but blood pressure in the range of 120–139/70–89 mmHg, concomitant indications…

…commonly, retrograde. Distal re entry tears may allow blood to return to the true lumen, whereas disruption of the adventitia can result in rupture. An…

…For decades, the management of type 2 diabetes mellitus (T2DM) and obesity was siloed, with clinicians focusing primarily on hemoglobin A1c (HbA1c) reduction, blood pressure…