ACC general Flashcards
Definition of AAA?
dilatation of greater than 50% diameter (>3cm)
Surgery performed electively for which aneurysms?
> 5.5cm or expanding more than 1cm per year, can do EVAR
Signs of ruptured AAA?
Shock, expansile mass, collapse abdo pain often radiates to the back and groins
When to consider AAA diagnosis clinically?
> 50 with abdo pain/back pain/hypotensive
Known AAA and collapse/pain
AAA must be excluded where another diagnosis is more likely.
Emergency management of AAA?
Vascular surgeon, ECG, blood Xmatch (10) consider FFP and haemhorrage protocol, catheter and wide bore cannulae. Shock treated with 0 neg.
Try keep systolic <100 to avoid rupturing leak.
Cef n Met
Appendicitis msot common what ages and sex?
10-20 rare under 2 males slightly more.
Risk factors appendicitis?
Frequent ABX smoking
Complications from appendicitis, perforation likely after how long?
Mass abscess, peritonitis and rupture more likely >12hrs
Suspect appendicitis?
Abdo pain, epigastric and umbilical worsens and migrates to RIF. Movement worsens pain.
Anorexia, nausea constipation vomiting. Low grade fever
Maximal tenderness in appendicitis where?
Mcburneys point
What is rosvigs sign?
palpate left quadrant gives pain in right
Psoas sign in appendicitis ?
right thigh extended when in left lat causes right quadrant pain
Initial investigations in appendicitis?
Pregnancy test (exclude ectopic) Urine dip but may be abnormal due to inflammation. FBC and CRP 80-90% neutrophillia and leukocytosis
Main cause of cholecystitis?
Stones, 90-95% only 0.5% no stones
Risk factors for cholecystitis?
Age, female, obesity, ^cholesterol, smoking, crohns, diabetes
Complications of cholecystitis?
necrosis, perforation, peritonitis, jaundice
Cholecystitis symptoms?
Severe sudden RUQ pain, anorexia, nausea vomiting.
Fever, tenderness RUQ +- murphys. Referred pain scapular.
Management of cholecystitis?
Abdo USS, FBC, CRP amylase, ABX, analgesia and fluids
What is charcots triad?
Fever, jaundice and RUQ pain (cholangitis)
Most common cause of cholecystitis?
Obstruction
Key features of cholangitis?
Age >50 with risks, jaundice, pruritis, clay stools, fever and chills, dark urine, mental state changes, hypotension
Diagnosis of cholangitis?
FBC, urea, creatinine, ABG, MRCP, CT USS
Bowel obstruction features?
N&V, anorexia, colicky pain, constipation and distention. tinkling bowel sounds.
Causes of small bowel obstruction?
Hernias and adhesion(75%) malignancy rare
Causes of large bowel obstruction?
Usually malignancy and aged over 70, can be sigmoid volvulus
Bowel sounds and symptoms in ileus?
Painless no bowel sounds
Strangulated obstruction symptoms?
Pt more ill than expected, sharp constant pain. Peritonism is cardinal. fever WCC and signs of mesenteric ischaemia
Xray findings SBO?
Small bowel obstruction- valvulae commintantes completely cross lumen, lack of gas in large bowel.
Xray findings LBO?
peripheral gas shadow proximal to the blockage but not in the rectum. Large bowel haustra do not cross the lumens width
Immediate action bowel obstructions?
NG tube free drainage, iv fluids for electrolyte abnormalities, analgesia. FBC AXR and erect chest plus catheter
AXR sign with sigmoid volvulus?
Coffee bean sign
Sigmoid volvulus treatments?
Flatus tube, sigmoidoscopy
Diverticulitis symptoms?
Altered bowel habit, left sided colic relieved by defecation, nausea and flatulence, pyrexia, possible tender colon?
Diverticulitis investigations?
Erect CXR for perf, USS bloods wcc, crp.
Diverticulitis management?
Mild treated at home with fluids and abx, admit if bad for nbm and iv fluids. Surgery for peritonitis and purulence. Elective resection if severe or stenosed or fistulae
Causes of pancreatitis?
Gallstones, ethanol. trauma, steroids, mumps, autoimmune, ERCP, drugs hyperlipid.
Signs and symptoms of pancreatitis?
Gradual or sudden severe epigastric pain, radiates to back. Vomiting, tachy, fever jaundice, rigid abdomen,
Cullen’s sign?
periumbilical brusing
Grey-turners sign?
Flank bruising retroperitoneal haemorrhage
Investigations for pancreatitis?
> 1000 amylase, lipase(more specific) ABG, AXR, erect CXR USS, ERCP
Management of pancreatitis?
NBM likely NG tube needed. IV fluids ensure urine 30ml/hr
How do you assess pancreatitis severity?
Glasgow modified criteria >3 prompts ITU/HDU
Symptoms of peptic ulcer disease?
Epigastric pain, often hunger related or food or time of day. Fullness, heartburn, tender epigastrium,
Peptic ulcer red flags? ALARMS
anaemia, loss of weight, anorexia, recent onset, melena, swallowing difficulty
Which is more common gastric or duodenal ulcer?
Duodenal 4X more
Risk factors for duodenal ulcers?
H.pylori, nsaids, ssris, steroids. Pain before meals relieved by drinking milk/meals
Gastric ulcers most common in who? where?
Elderly, lesser curvature.
Gastric ulcer risks?
H pylori, NSAIDS,smoking, burns. relieved by antacid related to food.
Gastric ulcer complications?
Bleeding, perf, malignancy, reduced gastric outflow
What happens in AKI?
Rapid reduction (hours to days) in the eGFR due to renal hypoperfusion, damage to the glomeruli, tubules, interstitial or the obstruction to urine outflow.
When is it diagnosed (AKI)?
is an ^ serum creatinine concentration with or without a decrease in urine production. (inverse proportion to eGFR)
Causes of AKI broadly?
Pre-renal, Renal, Post-renal
Pre-renal causes AKI?
- Hypovolaemia
- Reduced cardiac output- liver failure, cardiac failure
- Sepsis
- Renal artery stenosis
- ACE inhibitors
Renal causes of AKI?
Ischaemic, cytotoxic or inflammatory processes in urinary tract.
Post renal causes of AKi?
- Luminal- stones, clots and sloughed papillae
- Mural- malignancy (ureteric, bladder and prostate), BPH and strictures
- Extrinsic compression- malignancy (pelvic) and retroperitoneal fibrosis
Stages of AKI?
1= 1.5 X creat 0.5ml/kg urine 6hr
2= 2-2.9 times base 0.5ml/kg >12hrs
3 = 3x creat0.3ml/kg >24 hr or anuria for 12hr
Risk factors for AKI?
> 75 years, CKD, cardiac failure. liver and vascular disease DIABETES! drugs, sepsis, poor fluid
AKI assessment?
A-E assess volume status, check K urgently. Dip urine (infection or blood)
Bence jones proteins assoc with?
Multiple myeloma
Drugh overdoese treated with dialysis? (BLAST)
barbiturates, lithium, alcohol, salicylates and theophylline)
Indications for renal replacement therapy?
Uraemic complications, acidosis, pulmonary oedema, hyperkalaemia >7
Management of post renal aki?
: catheterise and consider CT of the renal tract and urology referral if obstruction is most likely
Why is ketamine good in asthma?
Smooth muscle relaxation
How does ketamine work?
Non competitive NMDA antagonist brain and spine.
Ventricular rate in AF?
160-180bpm
Define paroxysmal AF?
> 30s less than 7days
Persistent AF?
> 7days
Permanent AF?
Not terminated by cardioversion, or relapses <24hrs
Causes of AF?
Most have a cause-
IHD, HTN, Hyperthy, rhematic, WPW, heart failure, caffeine, drugs, infection
AF complications?
Stroke and emboli, HF, Tachy induced myopathy and ischaemia
ECG AF?
Absent P chaotic baseline
AF treatment?
Rate control - atenolol or diltiazem/verapamil)
cardioversion new onset or reversible cause/HF
CHADVASc score for anticoag ?
1= antiplatelet or anticoag, 2 = anticoag
Atrial flutter?
Atrial tachy usually 250-300bpm
Causes of atrial flutter?
CHD, Open heart, HTN, obesity, WPW, etoh, thyrotox, copd
ECG atrial flutter
Saw tooth, no p waves but regular
Treatment of atrial flutter?
reversible causes, if unstable cardiovert, anticoag, able, amiodarone, flecainide, also rate control!
What typically required to initiate svt?
Extrasystole makes re entrant circuit.
ECG SVT?
narrow complex, QRS<120ms rate greater than 100 p absent or inverted
SVT management?
Vagal manouvres first if stable, then adenosine 6mg with flush. Then verapamil, then cardiovert DC (if unstable)
Ventricular tachycardia?
Vent rhythm >100bpm wide QRS or needing termination due to instability
Deviation in VT?
Left axis
Management of VT?
Give 02, IV, ECG, ABG, Amiodarone, if torsades give MGSO4 - may need defib inplant
Why does torsades come about?
Prolonged QT
Triad of DKA?
Ketonaemia, Hyperglycaemia, Acidaemia (metabolic)
Features of DKA?
Malaise, polyuria, dipsia, abdo pain, laboured breathing, dehydration, pear drops, N&V
Diagnostic criteria DKA?
pH<7.3 or bicarb <15 kotnes >3 or marked on urine, glucose >11mmol
Investigations in DKA?
Bloods, leucocytosis common not usually infection, ECG to check for hyper or hypo kal. Can be silent MI
Rate of fixed insulin per hour in DKA?
0.1units per kg/hr
DKA, pH <7.1 Ketones >6 GCS <12 02 <92 consider what?
ITU admission