PSA Flashcards

(263 cards)

1
Q

What percentage of potassium correlates with 20mmols?

A

0.15%

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2
Q

What percentage of potassium correlates with 40mmol?

A

0.3%

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3
Q

How much hydrocortisone is 5mg prednisolone equivalent to?

A

20mg

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4
Q

How much dexamethasone is 5mg prednisolone equivalent to?

A

750micrograms

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5
Q

Name some stimulant laxatives?

A

Senna
Bisacodyl
Rectal glycerol suppository

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6
Q

When is bisacodyl contraindicated?

A

Bowel obstruction
Acute abdominal conditions
Acute IBD
Severe dehydration

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7
Q

Name some osmotic laxatives?

A

Lactulose
Macrogol

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8
Q

How does macrogol work?

A

Draws water in from large bowel

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9
Q

When is macrogol not recommended?

A

If patient already bloated - SE is bloating

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10
Q

What kind of laxative is docusate?

A

Softener & stimulant

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11
Q

Name some bulk forming laxatives?

A

Ispaghula husk
Methylcellulose
Sterculia

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12
Q

When are bulk forming laxatives indicated?

A

Adults with small hard stools if fibre cannot be increased in the diet.

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13
Q

What symptoms may be exacerbated with BFL?

A

Symptoms of flatulence, bloating, and cramping

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14
Q

How long do BFL take to work?

A

72hrs

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15
Q

How do you treat patients with opioid induced constipation?

A

An osmotic laxative (or docusate sodium to soften the stools) and a stimulant laxative is recommended.

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16
Q

What should be avoided in opioid induced constipation?

A

Bulk-forming laxatives

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17
Q

What does co- codamol contain?

A

Paracetamol and codeine

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18
Q

Post- op pain ladder?

A
  1. Reg paracetamol
  2. Reg codeine/ dihydrocodeine
  3. Reg/ PRN morphine sulphate (modified release)
    4.. Reg/ PRN morphine sulphate (immediate release)
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19
Q

When is fluid resuscitation used?

A

When haemodynamically unstable

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20
Q

When is replacement used?

A

Losses e.g. N&V, DKA

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21
Q

When is maintenance used?

A

Nil by mouth

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22
Q

How much water /kg per day in maintenance ?

A

25-30ml/kg/day

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23
Q

How much Na+/K+/Cl- /kg per day in maintenance ?

A

1mmol/ kg

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24
Q

How much glucose per day in maintenance ?

A

50-100g/ day

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25
How many grams of glucose is in 1000ml 5% dextrose?
50g
26
What is the maximum rate for potassium?
DO NOT prescribe >10mmol per hour
27
What is the risk when using large volumes of 0.9% saline?
Inc risk of hyperchloraemic metabolic acidosis
28
When should 5% glucose be avoided and why?
Patients who have had a stroke Inc risk of cerebral oedema
29
What should not be given with ibuprofen?
Steroids
30
Minimum & maximum doses of bisoprolol?
Minimum = 1.25mg Maximum = 20mg
31
Minimum & maximum doses of atorvastatin?
Minimum = 10mg Maximum = 80mg
32
Starting dose of metformin?
500mg
33
Drugs to consider in delirium/ acute confusion?
Zopiclone Analgesics Anticholinergics Antidepressants Antipsychotics Metoclopramide Electrolyte imbalance e.g. low Na+
34
Which drugs can cause dehydration?
Diuretics
35
When should metformin be withheld in renal impairment?
EGFR <30ml/ minute/ 1.73
36
Name some CYP450 inhibitors
Omeprazole Amiodarone SSRI's Grapefruit juice Cimetidine Macrolides
37
CYP450 inducers?
Carbamezapine Barbituates Phenytoin Rifampicin Pioglitazone Steroids Rifampicin
38
What do CYP450 inducers do?
Inducers increase the expression level of CYP450 enzymes resulting in increased metabolism of drugs and subsequently reducing the therapeutic concentration.
39
What do CYP450 inhibitors do?
Inhibitors prevent the CYP450 enzymes from working or reduce the rate of an enzyme-catalysed reaction. Consequently, this decreases drug metabolism in the body and increases the potential for toxicity.
40
When is metaclopramide contraindicated?
Bowel obstruction be causious in delirium
41
Micrograms to milligrams?
Divide by 1000
42
Fluids in children?
100ml/kg for first 10kg 50ml/kg for next 10kg 20ml/kg for weight over 20kg
43
How often is methotrexate taken?
Once a week
44
Methotrexate + NSAIDS --> ?
Low platelet count
45
Trimethoprim + methotrexate -->?
Bone marrow suppression
46
PPIs + methotrexate --> ?
Inc levels of methotrexate
47
What can a SE of furosemide be?
If given fast --> can cause deafness
48
Common drugs related to ototoxicity?
Gentamicin Bumetanide Furosemide Vancomycin
49
When is furosemide more likely to be ototoxic?
IV administration If patient has renal impairment
50
4 C's for C. diff?
Clindamycin Co- amoxiclav Ciprofloxacin Cephalosporins (ceftriaxone, cefalexin)
51
Clarithromycin + simvastatin --> ?
increases the exposure to Simvastatin
52
Common symptoms of opioid toxicity?
Pinpoint pupils Coma Respiratory depression
53
Antidote for opioid toxicity?
Naloxone
54
When are pupils constricted?
Heroin Morphine Oxycodone Methadone Codeine Hydrocodone
55
When are pupils dilated?
Amphetamines Methamphetamines Cocaine/ crack Hallucinogens Speed
56
Phenytoin + oral contraceptives?
Potent CYP enzyme inducer and increases breakdown of oral contraceptives
57
Treatment for drug induced extrapyramidal symptoms?
Procyclidine
58
Serotonin syndrome?
Abrupt Rapidly resolving Myoclonus and tremor Inc reflexes Mydriasis
59
Neuroleptic malignant syndrome?
Gradual Prolonged Diffuse rigidity Dec reflexes Hyperthermia
60
What is NMS a SE of?
Antipsychotics
61
Info on benzodiazepines?
Can affect driving/ operating machinery --> DVLA
62
Extrapyramidal symptoms?
E.g. tremor, involuntary muscle contractions
63
Atypical antipsychotics?
Quietapine, olanzapine
64
SE of atypical antipsychotics?
Weight gain Diabetes Rise in serum lipids
65
Examples of typical antipsychotics?
Chlorpromazine, haloperidol
66
SE's of typical antipsychotics?
Acute dystonia Akathisia Restlessness Tardive dyskinesia
67
Is ankle swelling related to dose of amlodipine?
No (don't tend to change dose)
68
What is the risk of the quinolone ciprofloxacin?
Tendon rupture (achilles, elbow)
69
What increases the risk of tendon rupture if on ciprofloxacin?
On steroids
70
What is a SE of quinolone?
Prolong QT duration !!! Reduce seizure thresholds
71
Drugs to be stopped in AKI?
NSAIDs Aminoglycosides ACEI ARB Diuretics
72
Function of calcium gluconate in hyperkalaemia?
Stabalisation of cardiac membrane
73
Function of insulin dextrose/ salbutamol in hyperkalaemia?
Short-term shift in potassium from extracellular to intracellular fluid compartment
74
Function of calcium resonium in hyperkalaemia?
Removal of potassium from body
75
When does IM not work?
If cachetic
76
Function of/ examples of SGLT2 inhibitors?
E.g. dapagliflozin Inhibits sodium- glucose co transporter in proximal tubule of nephron --> glucose secretion
77
What to be way of with SGLT2i?
Euglycaemic DKA's UTI's
78
Normalising CO2 on ABG?
BAD SIGN - can no longer breath out CO2
79
Which medications may exacerbate heart failure?
TZD - pioglitazone Verapamil - neg inotropic effect NSAIDS Glucocorticoids Flecainide
80
Antibiotics CI in pregnancy?
Tetracyclines Aminoglycosides Sulphonamides and trimethoprim Quinolones
81
Drugs CI in pregnancy?
ACEI, ARB Statins Warfarin Sulphonylurea's Retinoids Cytotoxic agents
82
Weight per volume - 20%?
20 grams per 100mls
83
Weight per volume - 1%?
1 gram per 100mls
84
Weight per weight?
1% w/w = 1g in 100grams
85
What medications to stop for surgery?
ACEI ARBs Diuretics Anticoagulants + antiplatelets HRT and COCP Lithium NSAIDs
86
How long before surgery should COCP be stopped?
4 weeks before
87
Diabetic meds in surgery - which ones to stop/ alter?
Metformin - if OD/BD - continue, if TDS - stop lunchtime dose SGLT-2i - omit on day of surgery Sulphonylureas - omit morning dose
88
TZD/ DPP4i GLP-1 in surgery?
Take as normal
89
What can St John's wart syndrome contribute to?
Serotonin syndrome
90
Cytochrome p450 inducers pneumonic?
SCRAP GP Sulphonylureas Carbamezapine Rifampicin Alcohol Phenytoin Griseofulvin Phenobarbitone
91
CYP450 inhibitors pneumonic?
SICK FACES Sodium valproate Isoniazid Cimetidine Ketoconazole Fluconazole Alcohol & grapefruit juice Chloramphenicol Erythromycin Sulfonamides
92
If NBM can patients take oral drugs?
No, must be IV
93
Metformin important information?
Look for signs of lactic acidosis e.g. dyspnoea, muscle cramps, abdominal pain, hypothermia, asthenia
94
Important info - sulphonylurea?
Signs of hypoglycaemia Higher risk in elderly or renal impairment
95
SGLT2 inhibitors important info?
Signs of DKA, even if BM normal
96
Important side effect to inform patient on - prednisolone?
Adrenal suppression
97
Nitrates important info?
Can develop rapid tolerance
98
Tamoxifen important info?
VTE risk - seek immediate medical attention if SOB
99
SE's of bisphosphonates?
Atypical femoral fractures Osteonecrosis of the jaw
100
Important info for all antipsychotics?
Photosensitisation Drowsiness Effects of alcohol enhanced
101
Lithium important info?
Report signs of toxicity Hypothyroidism Renal dysfunction Benign ICH - headache, visual disturbance Maintain fluids Avoid dietary changes (which inc or dec sodium intake) Avoid NSAIDs
102
Clozapine important info?
Risk of agranulocytosis
103
Sodium valproate important info?
Appropriate contraception Exclude pregnancy
104
What to look up if contraceptives & breast cancer?
Sex hormones
105
Does combined HRT inc or dec risk of breast cancer?
Increases
106
Effect of antidepressants on sodium?
Hyponatraemia (consider if drowsy, confused, convulsions)
107
When should lithium levels be taken after dose?
12 hours
108
Lithium monitoring?
measure levels 1 week after starting treatment, 1 week after every dose change ad then weekly until level stabilises
109
Lithium monitoring when stable?
measure every 3 months for first year then 6 months thereafter
110
Initial SE of lithium?
Diho, vertigo, weakness, dazed
111
Long term SE of lithium?
Hypo/ hyperthyroidism, hyperparathyroidism, nephrotoxicity, renal tumours
112
Once established - lithium monitoring?
Weight, U&E's, TFTs, Ca every 6 months
113
When is levonorgestrel effective?
within 72hrs UPSI
114
When is ulipristal acetate effective?
Within 120 hours UPSI
115
Which hormonal emergency contraceptive is most effective?
Ulipristal acetate
116
Hormonal emergency contraception if BMI >26 or weight >70kg?
Ulipristal acetate or Double dose levonorgestrel
117
Treatment of VTE in pregnancy?
Dalteparin
118
HRT if LMP <1yr ago?
cyclical combined
119
HRT if LMP >1 yr ago?
Continuous combined
120
If hysterectomy for endometriosis, do they need combined or oestrogen only HRT?
Need combined
121
When should antiviral Tx be considered in shingles?
Immunocompromised Non- truncal involvement (neck, legs, perineum) Moderate to severe pain or rash >50 - to reduce post herpetic neuralgia
122
If antivirals commenced for shingles - when?
Within 72hrs of rash
123
Trigeminal neuralgia treatment?
Acute - carbamazepine
124
When is digoxin toxicity worsened?
Hyperkalaemia
125
When should digoxin levels be taken?
6 hrs after dose
126
What monitoring is required for digoxin?
U&E's
127
What should be added to bloods if K+ low?
Magnesium
128
What can an adverse effect of carbimazole be?
Pancreatitis Neutropenia Agranulocytosis
129
Drugs that cause agranulocytosis?
Clozapine Phenytoin Carbimazole
130
What is trough concentration?
Pre- dose
131
If trough gentamicin dose is high...?
Interval between doses should be increased
132
What is peak concentration?
Post- dose
133
If peak gentamicin dose high...?
Dose must be decreased
134
What should be measured when using thiopurines
TPMT levels
135
SE's of amiodarone?
Hepatotoxicity Thyroid (hyper/ hypo) Corneal microdeposits Pulmonary toxicity
136
Important info for methotrexate?
Often stopped if acutely unwell Counsel to report signs of blood disorders
137
Rate of sodium inc in 24 hrs for hyponatraemia?
No more than 10mmol/L in 24 hrs
138
If on PPI and hyponatraemic what should you do?
Switch to famotidine
139
SVT arrhythmia management?
Vagal manouvres IV adenosine (6-> 12 -> 18mg) Electrical cardioversion
140
When is adenosine contraindicated?
Asthma COPD decompensated heart failure Long QT
141
what medications are taken at night?
Statins Amitriptylline
142
how much should levothyroxine be inc in pregnancy?
25-50mcg
143
If INR ≥1.5 before surgery on warfarin?
Phytomenadione (vit K1)
144
Who is at inc risk of bit D deficiency?
Asian women
145
Drugs which dec serum potassium?
Thiazide diuretics Loop diuretics Acetazolamide
146
Drugs which inc serum potassium?
ACEi Angiotensin- 2 receptor blockers Spironolactone Potassium supplements Potassium sparing diuretics
147
SIADH
Hyponatraemia Euvolemic
148
Mechanism of action - digoxin?
Dec conduction through AVN which slows ventricular rate in af and atrial flutter Inc force of cardiac muscle contraction Stimulates vagus nerve
149
When should digoxin level be measured in suspected toxicity?
within 8-12 hrs of last dose
150
Symptoms of digoxin toxicity?
Generally unwell Lethargy Nausea, vomiting Confusion Yellow/ green vision Arrhythmia Gynaecomastia
151
What tends to precipitate digoxin toxicity?
Hypokalaemia
152
Normal lithium range?
0.4-1.0mmol/L
153
Ciclosporin drug monitoring?
Trough levels just before dose
154
Phenytoin level monitoring?
Not routinely Trough levels immediately before dose if concerned
155
Codeine equivalence of 10mg oral morphine sulphate?
100mg
156
Nephrotoxicity due to contrast media?
25% inc in creatinine occurring within 3 days of IV administration of contrast media 2-5days after
157
How to prevent contrast nephrotoxicity?
IV 0.9% sodium chloride at rate of 1ml/kg/hour for 12 hours pre and post procedure Withold metformin
158
O2 management if risk factors for hypercapnia?
Prior to ABG's --> 28% venturi mask at 4l/min
159
Causes of hyperkalaemia?
AKI Drugs Metabolic acidosis Addison's disease Rhabdomyolysis Massive blood transfusion
160
Glucocorticoid meds effect on glucose?
Can cause hyperglycaemia
161
Assisted alcohol withdrawal?
Long- acting benzodiazepine e.g. chlordiazepoxide hydrochloride
162
Common adverse effect of beta blockers?
Erectile dysfunction
163
What drug can induce cholestatic jaundice?
Flucloxacillin
164
Citalopram + dabigatran?
Inc risk of bleeding
165
ACEi effect on creatinine?
Small rise in creatinine (<20%) is to be expected when starting an ACEi & does not require investigation or change to prescription
166
What should be measured when beta blocker used for af?
Heart rate
167
Adverse effects of ciclosporin?
Nephrotoxicity Hypertension
168
Aim for statin?
After 3 months – a >40% reduction in non- HDL cholesterol
169
When is ondansetron contraindicated?
QT prolongation
170
IV fluid resuscitation?
Use crystalloids that contain sodium with bolus of 500mls over <15mins Glucose not required
171
if experience GI SE's with metformin?
Offer modified release
172
Max dose of citalopram in elderly?
20mg daily
173
Drugs which can cause diarrhoea?
Alendronic acid Lansoprazole
174
Drugs that cause ankle oedema?
Amlodipine Naproxen
175
First line therapy for c. diff?
Oral vanc
176
Life threatening c. diff?
Oral Vanc and IV met
177
Common SE of liraglutide (GLP-1)?
N&V
178
179
What is prolonged corticosteroid use associated with?
Insomnia
180
When is fentanyl a good option?
Patients with chronic kidney disease
181
When is gradual withdrawal of systemic steroids indicated?
received more than 40mg prednisolone daily for more than one week received more than 3 weeks treatment recently received repeated courses
182
Effect of carbamazepine on sodium?
Hyponatraemia
183
Is warfarin safe in breastfeeding?
Yes
184
Primary prevention atorvastatin dose?
20mg daily
185
Secondary prevention atorvastatin dose?
80mg daily
186
Drugs that should be used with caution in established ischaemic heart disease?
NSAIDS Oestrogens Varenicline
187
Effect of P450 inducers on INR?
Decrease
188
Effect of P450 inhibitors on INR?
Increase
189
Verapamil + beta blocker -->?
Contraindicated Cause life threatening bradycardia
190
Common adverse effects from amlodipine?
Ankle swelling Headache
191
192
First line for C. diff?
Vancomycin 125mg QDS
193
How to measure glucose control in DM?
HbA1c Home glucose readings
194
Which drugs can reduce hypoglycaemic awareness?
Beta blockers
195
Usual dose for Ibuprofen?
200-400mg tds
196
Usual dose for codeine?
30-60mg qds
197
Usual dose for metoclopramide?
10mg tds
198
Usual dose for cyclizine?
50mg tds
199
Usual dose for amoxicillin?
500mg tds
200
Usual dose for paracetamol?
1g qds
201
Usual dose for clarithromycin?
500mg bd
202
Usual dose for Lansoprazole?
15-30mg
203
Usual dose for omeprazole?
20-40mg
204
Usual dose for clopidogrel?
75-300mg od
205
Usual dose for aspirin?
75-300mg od
206
Usual dose for simvastatin:?
10-80mg on
207
Usual dose for atenolol?
25-100mg od
208
Usual dose for ramipril?
1.25-10mg od
209
Usual dose for bendroflumethiazide?
2.5mg od
210
Usual dose for furosemide?
20 mg od - 80mg bd
211
Usual dose for amlodipine?
5-10mg od
212
Usual dose for levothyroxine?
25-200mcg od
213
Usual dose for metformin?
500mg od - 1g bd
214
Dose for breakthrough pain?
1/6 of total morphine dose
215
Which medications are usually take at night?
Statins Amitriptyline
216
How long is tamoxifen taken for breast cancer?
5 years
217
Important info about tamoxifen?
VTE Hot flushes
218
Medications that can be used for smoking cessation?
Varenicline Bupropion hydrochloride
219
E.g. of ICS and LABA inhalers?
Formoterol with budesonide Formoterol with beclometasone Salmeterol with fluticasone
220
When is pioglitazone contraindicated?
Hx of bladder cancer Hx of heart failure DKA
221
Treatment for mild acute migraine?
Aspirin/ NSAID/ triptan?
222
Treatment for moderate to severe acute migraine?
Triptan and anti- emetic
223
Volume of glucose 10% infusion?
150-200ml
224
Volume of glucose 20% infusion?
75-100ml
225
Fluids containing sufficient sodium chloride without excessive potassium chloride?
Sodium chloride 0.9% Hartmann's solution Ringer's solution Plasmalyte
226
Common side effect of tacrolimus?
Tremor
227
SE's of empagliflozin (SGLT2 inhibitor)?
Hypovolaemia Thirst UTI's Urosepsis
228
Why can hypovolaemia contribute to postural hypotension?
Reduced blood volume is insufficient to maintain stable BP during position changes esp against force of gravity when standing
229
Effect of amitriptyline on QT interval?
Prolonged
230
Common SE of dexamethasone if taken at night?
Insomnia
231
When should nitrofurantoin be avoided?
eGFR <45
232
What bacteria is cefalexin effective agains?
Many gram + e.g. staph aureus and strep Some gram - e.g. E.coli
233
Primary treatment for hypercalcaemia?
Rehydration with sodium chloride 0.9%
234
Early signs of agranulocytosis?
mouth ulcers sore throat fever infective symptoms
235
What happens if calcium and iron taken at same time?
Dec absorption of iron
236
How should rivaroxaban be taken?
With food!
237
Indicators of onset of hepatic necrosis?
RUQ tenderness Hepatomegaly
238
What can co- amoxiclav be assoc. with?
Adverse hepatic events e.g. cholestasis, jaundice, elevated ALP/ GGT/ ?bilirubin
239
Trimethoprim + methotrexate -->?
Folate deficiency which manifests as bone marrow suppression
240
Can statin be continued if transaminases are raised?
Yes, if less than 3x the upper limit of normal
241
When is eplerenone contraindicated?
Ongoing hyperkalaemia
242
What to monitor if on mineralocorticoid therapy?
U&E's
243
Methylphenidate monitoring?
BP Pulse Appetite Height Weight Psych disorders?
244
Isotretinoin monitoring?
Serum lipids LFT's
245
LMWH monitoring?
Platelet counts
246
Sulfasalazine monitoring?
FBC
247
First line treatment for open angle glaucoma?
Latanoprost
248
Resus fluids?
0.9% sodium chloride Hartmann's Plasma- Lyte
249
When is ulipristal acetate contraindicated?
Asthma
250
Ibuprofen + ramipril-->?
Inc risk of nephrotoxicity and hyperkalaemia
251
Pain relief for mild/ mod cholecystitis?
Paracetamol Anti- inflammatory drugs
252
Pain relief for severe cholecystitis pain?
IM diclofenac
253
Features of essential tremor?
Symmetrical High frequency Suppressed with concentration Improves with alcohol
254
Ferrous fumarate dose?
210mg
255
Naloxone dose?
400mcg IV
256
Treatment for fungal nail infection?
Terbinafine
257
First line anti- emetic in Parkinson's disease?
Domperidone
258
Wart treatment?
Salicyclic acid
259
Symptoms to monitor if on labetalol?
Itching (has been associated with severe hepatocellular damage).
260
Sedation if has Parkinson's?
Lorazepam 1mg IV stat (avoid haloperidol)
261
SE of folic acid?
FARTING x
262
dose of adrenaline if used in croup?
400 micrograms/kg (max 5mg).
263