SMLE study revision Flashcards
(292 cards)
post antibiotic C diff infection antibiotic?
oral vancomycin (or oral metronidazole) severe infection with C difficle: creatinine \>1.5 or WBC \>15000 \>\> oral fidaxomicin (preferred)
scoring system for pneumonia?
CURB-65 sscore
C: confusion
U: urea >7 mmol/L
R: respiratory rate >30/min
B: blood pressure <90/60
Age >65
0-1: home treatment
2: admit
3-5: ICU
what is growing pain?
Growing pains most commonly occur in children 3–12 years old and manifest with episodic, bilateral pain that predominantly affects the lower extremities (shins, calves, thighs, popliteal fossa). The cramping pain most commonly occurs at the end of the day or during the night, ranges from mild to severe, and can awaken the child from sleep. Symptoms typically resolve by the morning and are not present during the day or during periods of activity. Growing pains is a clinical diagnosis because physical examination and diagnostic imaging show no abnormalities. Management consists of analgesics and massages, and reassuring patients and their parents of the condition’s benign nature.
urine electrolyte changes after 1-3 days of vomiting?
high urine sodium
high urine potassium
low urine Cl
alkaluria
urine electrolyte changes after vomiting for > 3 days
low urine Na
low urine K
low urine Cl
aciduria
vomiting leads to dehydration which will secrete ADH to reabsorb water and aldosterone to reabsorb sodium and secrete potassium and hydrogen ions
so urine will be low in sodium and high potassium and aciduria
earliest sign of rheumatoid arthritis on plain x ray?
juxta articular osteopenia
causing the classical hitch - hiker’s deformity
target INR for Afib, aortic and mitral valve replacement, VTE
Important target International Normalised Ratios (INRs) to remember include:
For patients with atrial fibrillation: 2-3
For patients with metallic valve replacements: 2-3 (aortic valve) 2.5-3.5 (mitral valve)
Following venous thromboembolism (VTE): 2-3
Note that for patients with a recurrent VTE whilst on Warfarin, the target INR should be increased from 2-3 to 3-4.
when to administer Anti-D
Anti-D prophylaxis should be administered during the 28th week of gestation and within 72 hours following the birth of an Rh-positive baby.
screening on celiac disease in patients with type 1 diabetes?
on diagnosis and every 2 years in asymptomatic patients
investigations of DIC:
Thrombocytopenia
Increased prothrombin time
Increased fibrin degradation products (such as D-dimer)
Decreased fibrinogen
treatment of giant cell arteritis:
Uncomplicated disease: oral glucocorticoids, e.g., prednisolone
Ischemic organ damage (e.g., impaired vision): Consider initial pulse therapy with IV glucocorticoids before oral glucocorticoids.
Pulse therapy with methylprednisolone
Oral glucocorticoids (initially, or following pulse therapy), e.g., prednisolone
types of rapid acting insulin:
aspart, lispro, glulisine
onset: 5-15 min
peak: 1 hour
duration: 3-4 hours
Types of short acting insulin and characteristics:
regular insulin
onset: 30 min
duration of action: 4-6 hours
standard insulin option for lowering blood glucose during hyperglycemic crisis
the only insulin given IV
types and characteristics of intermediate acting insulin:
NPH insulin
onset: 1-2 hours
duration: 10-16 hours
used for glucocorticoid induced hyperglycemia
Long acting insulin types and characteristics:
Glargine, detemir, degludec
onset 1-4 hours
duration 24 hours
When to give long term oxygen therapy in COPD patients:
- PaO2 ≤ 55 mm Hg or SaO2 ≤ 88% at rest despite optimal medication
- OR PaO2 55–60 mm Hg or SaO2 <90% in patients with pulmonary hypertension, CHF, or polycythemia
Target oxygen saturation: > 90%
Recommended duration: continuous oxygen therapy for ≥ 15 hours/day
Reevaluate after 60–90 days (with ABG or pulse oximetry).
Wolff-Parkinson-White syndrome
Aetiology
Wolff-Parkinson-White (WPW) is caused by a congenital accessory electrical pathway which connects the atria to the ventricles bypassing the AV node.
This accessory pathway leads to the potential for re-entrant circuits to form leading to supraventricular tachycardia
- Features on ECG in WPW
Delta waves (slurred upstroke in the QRS)
Short PR interval (<120ms)
Broad QRS
If a re-entrant circuit has developed the ECG will show a narrow complex tachycardia
-Management of WPW
Radiofrequency ablation of the accessory pathway
Drug treatment (such as amiodarone or sotalol) to avoid further tachyarrhthmias. These are contraindicate din structural heart disease.
Surgical (open heart) ablation - rarely done and only used in complex cases
-Unstable pateints > cardioversion
-In patients with an orthodromic AV reciprocating tachycardia (narrow QRS complex with short PR interval) management is with vagal manoeuvres (carotid sinus massage or Valsalva manoeuvre) in the first instance. If this fails IV adenosine should be administered.
-Contraindications in WPW
Digoxin and NDP-CCBs (e.g. verapamil) are contraindicated for long term use because they may precipitate ventricular fibrillation.
which autoantibodies are associated with systemic sclerosis?
- Anti-centromere antibodies are specific for limited cutaneous systemic sclerosis
- Anti-Scl-70 antibodies are specific for diffuse systemic sclerosis
- Anti RNA polymerase
Poor prognostic factor for pneumonia
Community-acquired pneumonia severity index (PSI) for adults
One point per year Age 62 pints
Pleural effusion (10 points)
Non for CBC or DM
A number of risk factors for mortality have been identified. Having two or three of the following variables have been associated with high risk in several studies:
Blood urea nitrogen> 20 mg/dL
Diastolic blood pressure less than 60 mmHg, and/or
RR 30 per minute.
plus
Confusion and
Age greater than 65 years constitute the CURB-65 score
Increasing age, presence of COPD and malignancy as comorbidities, hypothermia, tachypnea, PaO2/FiO2 ratio ≤250 mmHg, low Alb level, high BUN level and mechanical ventilatory support predict a worse prognosis;
Combination therapy should be considered for CAP
Common side effects of bupropion
Bupropion Common side effects
Headache, weight loss, dry mouth, trouble sleeping (insomnia), nausea, dizziness, constipation, fast heartbeat, and sore throat.
Diaphoresis (5% to 22%)
Constipation (8% to 26%),
Blurred vision (≤15%)
management of status epilepticus
-ABCDE approach
-Oxygen
-Ensure IV access
-Arterial Blood gas
-Bloods for glucose, FBC/UE/CRP,Calcium/Phosphate/Magnesium, drug levels if the patient is on anti-epileptic medications
-Anaesthetic review to ensure the airway is managed
-IV lorazepam 4mg
A second dose of lorazepam should be given if no response
-In the absence of IV access, PR diazepam or buccal midazolam can be administered.
-If the initial benzodiazepine fails, further anti-convulsants can be used:
Leviteracetam
Phenytoin
Valproate
-If seizures continue to persist, intubation and general anaesthesia is necessary.
most common causative agent of infective endocarditis
staph aureus
stept viridans post dental procedure
staph epidermidis infected peripheral venous catheter
smoking cessation management options
1- nicotine replacement therapy
gum, lozingens, patches, nasal spray, inhaler
Increases smoking cessation 1.5 times more than control.
Avoid with recent MI, arrhythmia, and unstable angina.
2- Bupropion
Increases smoking cessation rates about 2 times more than control.
*Avoid with seizure disorder and eating disorder. May be associated with suicidal ideation.
Safety in pregnancy is unclear.
3-Varenicline
Increases smoking cessation rates about 3.5 times more than control and almost 2 times more than bupropion.
SIRS diagnostic criteria
SIRS is diagnosed if ≥ 2 of the following 4 criteria are fulfilled:
- Temperature: > 38°C or < 36°C
- Heart rate: > 90/min
- Respiratory rate: > 20/min or PaCO2 < 32 mm Hg
- White blood cell count: > 12,000/mm3, < 4000/mm3, and/or > 10% band cells-