NICE Guidelines for Suspected TIA

When suspecting a TIA has occurred within the last week, NICE advises administering aspirin 300 mg and seeking assessment within 24 hours by a stroke specialist physician. However, they no longer recommend using the ABCD2 scoring system as evidence shows it is poor at distinguishing between high and low risk of stroke after a TIA.

If the suspected TIA happened over one week ago, the patient can be referred for assessment within 7 days. Immediate admission should be considered for patients with a bleeding disorder or on an anticoagulant, those who have had more than one TIA (consider crescendo TIAs), severe carotid stenosis, suspected cardioembolic source, or lack reliable support at home to contact emergency services if further symptoms occur.

It is important to follow these guidelines to ensure proper assessment and treatment for patients with suspected TIA.

Severity of Ulcerative Colitis and the Truelove-Witts Criteria

Severe flare-ups of inflammatory bowel disease can lead to serious complications such as toxic megacolon, perforation, sepsis, and severe bleeding. Hospital admission and inpatient treatment are necessary in such cases. Severe ulcerative colitis is characterized by significant systemic upset and severe lower gastrointestinal symptoms. Blood investigations can provide further information on disease severity.

The Truelove-Witts criteria are a validated way of stratifying disease severity. According to these criteria, acute severe ulcerative colitis is defined as bowels open more than six times daily plus one or more of the following: haemoglobin less than 105 g/L, ESR greater than 30 mm/hr, pulse rate greater than 90 bpm, and temperature greater than 37.8°C.

If a patient presents with bloody diarrhea and systemic unwellness (fever and/or tachycardia), immediate hospital admission for in-patient assessment is necessary. Approximately half of severe ulcerative colitis attacks occur as a first attack in a patient without a previous diagnosis.

Moderate disease is classified as four to six stools a day (with or without blood) with minimal systemic disturbance. Mild disease is classified as less than four stools a day (with or without blood) with no systemic unwellness (no fever or tachycardia) and a normal ESR.

It is important to note that anti-diarrheal agents such as loperamide should be avoided as they have not been shown to reduce stool frequency in ulcerative colitis and have been associated with an increased risk of toxic megacolon. Studies from the 1950s show that untreated severe ulcerative colitis had a mortality rate of almost 25%, but with the use of corticosteroids and expert surgical input, this figure has been reduced to less than 1%.

Assessment and Severity of Acute Asthma

Questions about the assessment and severity of acute asthma are common in exams. To address this, the British Thoracic Society has provided clear guidance on the assessment and management of acute asthma. It is important to familiarize oneself with this document.

Indicators of acute severe asthma include a peak expiratory flow rate of 33-50% of best or predicted, a respiratory rate of 25 or greater, a heart rate of 110/min or greater, or the inability to complete sentences in one breath. The goal of oxygen therapy is to maintain SpO2 at 94-98%.

It is important to note that increasing symptoms is a vague description that only indicates a moderate asthma exacerbation and is not a marker of an acute severe attack. The only indicator of an acute severe asthma attack in this case is the patient’s inability to complete sentences in one breath.

If any of these features of an acute severe asthma attack persist after initial treatment, the patient should be admitted.

Urgent Referral for Painless Visible Haematuria

Male or female patients who present with painless visible haematuria should be referred urgently for specialist assessment. However, if a patient presents with dysuria and visible haematuria, it is important to establish whether there is a urinary tract infection. If an infection is present, it can be treated appropriately, and referral for further investigation of the haematuria may not be necessary.

On the other hand, if an infection is not confirmed, urgent referral is warranted to investigate the haematuria with speed. Therefore, the next most appropriate step is to establish if a urinary tract infection is present. It is crucial to identify the underlying cause of haematuria to ensure prompt and effective treatment. Early referral and assessment can help prevent potential complications and improve patient outcomes.

Criteria for Urgent Referral to Urology

There are specific criteria for urgent referral to urology that are based on the potential risk of underlying carcinoma. These criteria include macroscopic haematuria, microscopic haematuria in subjects over 60 who have either dysuria or a raised WBC count in blood, swellings of the body of the testis, palpable renal mass, solid renal mass found on imaging, an elevated age-specific prostate-specific antigen (PSA), and a clinically suspicious penile lesion.

It is important to familiarize oneself with the current indications for urgent referral. It is worth noting that patients over 60 years old may require more urgent attention, as indicated by the criteria for microscopic haematuria. By being aware of these criteria, healthcare professionals can ensure that patients receive timely and appropriate care.

Assessment and Severity of Acute Asthma

Questions about the assessment and severity of acute asthma are common in exams. To address this, the British Thoracic Society (BTS) has provided clear guidance on the assessment and management of acute asthma. It is important to familiarize oneself with this document.

Indicators of acute severe asthma include a peak expiratory flow rate of 33-50% of the patient’s best or predicted rate, a respiratory rate of 25 or greater, a heart rate of 110/min or greater, or the inability to complete sentences in one breath. It is important to note that there is no fixed numerical peak flow rate for all patients, as it depends on their usual best reading or predicted peak flow reading. If their actual peak flow is 33-50% of this figure, then it is a marker of an acute severe attack.

According to BTS guidance, pulsus paradoxus is not an adequate indicator of the severity of an acute asthma attack and should not be used. A pulse of 101/min would not be considered a marker of acute severe asthma because the threshold is 110/min or greater. However, a respiratory rate of 26/min is clearly above the threshold advised by BTS and would be a marker of an acute severe attack. If any of these features of an acute severe asthma attack persist after initial treatment, then the patient should be admitted.

Harmful Levels of Paracetamol

When it comes to harmful levels of paracetamol, patients are divided into two groups: those who have taken an acute overdose and those who have taken a staggered overdose, which includes patients who may have taken therapeutic excess over a period of time. Surprisingly, even modest amounts of paracetamol can be harmful, especially for frail elderly patients.

According to the British National Formulary, a staggered overdose involves ingesting a potentially toxic dose of paracetamol over more than one hour, with the possible intention of causing self-harm. Therapeutic excess is the inadvertent ingestion of a potentially toxic dose of paracetamol during its clinical use. In these cases, patients who have taken more than 150 mg/kg of paracetamol in any 24-hour period are at risk of toxicity and should be commenced on acetylcysteine immediately, unless it is more than 24 hours since the last ingestion, the patient is asymptomatic, the plasma-paracetamol concentration is undetectable, and liver function tests, serum creatinine and INR are normal.

It’s important to note that there is no set number of tablets that can cause toxicity as it depends on the patient’s weight. Rarely, toxicity can occur with paracetamol doses between 75-150 mg/kg in any 24-hour period, and clinical judgement of the individual case is necessary to determine whether to treat those who have ingested this amount of paracetamol. For small adults, this may be within the licensed dose, but ingestion of a licensed dose of paracetamol is not considered an overdose. The doctor may not be informed until after the event, so familiarity with the timescales is also important.

NICE’s Guidance on Head Injury Management

A base of open or depressed skull fracture or penetrating head injury requires immediate referral to the emergency ambulance (999) service. Signs of a skull fracture that warrant referral to the emergency ambulance service include clear fluid running from the ears or nose, black eye with no associated damage around the eyes, bleeding from one or both ears, and bruising behind one or both ears.

On the other hand, a positive Dix-Hallpike maneuver is simply consistent with benign positional paroxysmal vertigo. It is important to follow NICE’s guidance on head injury management to ensure prompt and appropriate care for patients with head injuries. Proper identification and referral of patients with skull fractures can prevent further complications and improve outcomes.

Understanding Addison’s Disease

Addison’s disease is a rare condition caused by adrenal insufficiency, with the most common cause being autoimmune destruction of the adrenal glands. It affects a small percentage of the population, making it difficult to diagnose due to its vague symptoms. Patients may experience chronic fatigue, weight loss, and muscle weakness, among other symptoms. Differential diagnoses should be considered, including type 1 diabetes, eating disorders, and chronic fatigue syndrome.

Clinical examination and blood tests can provide clues to the presence of Addison’s disease. Postural hypotension, hyponatremia, and hyperkalemia are common features. A serum cortisol level done at 8-9 am can also be helpful in diagnosing the condition. Levels below 100 nanomol/L require hospital admission, while levels between 100 and 500 nanomol/L merit endocrinology referral for further investigation.

It is important to have a high degree of suspicion when considering a diagnosis of Addison’s disease, as early detection and treatment can prevent acute crises and improve patient outcomes.

Understanding Organophosphate Insecticide Poisoning

Organophosphate insecticide poisoning is a condition that occurs when an individual is exposed to insecticides containing organophosphates. This type of poisoning inhibits acetylcholinesterase, leading to an increase in nicotinic and muscarinic cholinergic neurotransmission. In warfare, sarin gas is a highly toxic synthetic organophosphorus compound that has similar effects.

The symptoms of organophosphate poisoning can be predicted by the accumulation of acetylcholine, which can be remembered using the mnemonic SLUD. These symptoms include salivation, lacrimation, urination, defecation/diarrhea, cardiovascular issues such as hypotension and bradycardia, small pupils, and muscle fasciculation.

The management of organophosphate poisoning involves the use of atropine to counteract the effects of acetylcholine accumulation. The role of pralidoxime in treating this condition is still unclear, as meta-analyses to date have failed to show any clear benefit.