Mixed III Flashcards
A 4-week-old boy born at 34 weeks gestation presents with a tender swelling in the right groin.
Indirect inguinal hernia
An indirect inguinal hernia travels down the inguinal canal on anterio-lateral side of the spermatic cord. Indirect inguinal hernias occur in 2% of full term infants and 10% of preterm infants. The male to female ratio is 10:1 with the right side being affected twice as often as the left. They usually present as a bulge in the groin when the baby cries. These hernias frequently present with irreducibility. The infant appears to be distressed with the distress worsening when the lump is examined. Most paediatric surgeons practise taxis (reduction under sedation) followed by herniotomy soon after.
A 62-year-old woman presents with a left groin swelling. On examination the lump is lateral to the femoral pulse.
Lymph node
Inguinal lymph nodes are frequently confused with an irreducible inguinal or femoral hernia. They are usually multiple and associated with constitutional symptoms of fever and malaise and may be an early manifestation of lymphoma. The surgeon can be confident that the lump is a lymph node if lateral to the femoral pulse as inguinal and femoral hernias are medial.
A 56-year-old man with moderately severe chronic obstructive airways disease presents with an easily reducible left groin swelling. On examination the cough impulse is not controlled by pressure over the internal ring.
Direct inguinal hernia
A direct inguinal hernia comes out directly forwards through the weakened posterior wall of the inguinal canal. The neck of an indirect hernia is lateral to the epigastric vessels while a direct hernia emerges medial to these vessels. Inguinal hernias have a peak incidence in the sixth decade with 65% being indirect. Direct inguinal hernias occur in the middle aged or elderly as an acquired condition. Clinically they present as a diffuse bulge.
A 52-year-old female presents with severe painful swelling of the right parotid gland five days after a hernia repair.
Antibiotics
Acute postoperative parotitis may occur, particularly in the elderly. It is usually caused by S. aureus. Culture of the parotid duct and blood cultures should be performed.
If there is no clinical improvement in 48 to 72 hours it may be because an abscess has formed. This can be diagnosed by ultrasound, CT or MRI. The treatment of an abscess is ultrasound guided aspiration. Incision and drainage risks damage to the facial nerve. If required this needs a formal parotid exposure, no muscle paralysis, and facial nerve stimulation. The incision should be in line with the facial nerve branches.
A 40-year-old obese female presents with sudden dyspnoea and chest pain two days after a total abdominal hysterectomy. Bilateral expiratory wheezes are audible. Chest x ray shows a wedge-shaped area of hypovascularity and a small pleural effusion.
CT pulmonary angiogram
This woman presents with chest pain and breathlessness after major abdominal surgery. With the additional risk factor of obesity, a PE seems likely. As the chest x ray is abnormal and suggestive of a PE, a CT angiogram is indicated. This should provide better information on the extent of the PE than a V/Q scan.
A 36-year-old male presents with sudden onset of diarrhoea after every meal. He also has eructation of foul gas. He underwent gastroenterostomy about six months previously.
Barium enema
Gastrocolic fistula is a late complication of gastroenterostomy. This condition may cause diarrhoea, weight loss, belching of foetid gas or, very rarely, vomiting of faeculant material. Diagnosis is primarily by history, but barium enema will add weight to the suspected diagnosis.
A 58-year-old female presents with breathlessness and chest pain approximately 10 hours after a carotid endarterectomy.
ECG
Ten hours postendarterectomy is too soon for a PE, so this is more likely to be cardiac ischaemia. Patients with carotid disease also have a high incidence of coronary artery disease. An ECG is the most appropriate initial investigation here.
A 43-year-old woman presents with continuous vaginal urine leakage three weeks after a radical hysterectomy.
Intravenous indigo carmine
A vesico-vaginal fistula may be present in this 43-year-old woman. The appearance of indigo carmine in the vaginal discharge after IV administration may confirm this finding. Cystourethroscopy and EUA may then be required to confirm the site and size of the fistula.
A 70-year-old man presents with insidious onset of jaundice with some weight loss. On examination the gallbladder was palpable in the right upper quadrant. Liver function tests show a raised bilirubin, grossly raised alkaline phosphatase and a mildly raised AST.
Carcinoma of the pancreas
Courvoisier’s law states that if in the presence of jaundice the gallbladder is palpable, then the jaundice is unlikely to be due to a stone. If the obstruction is due to a stone then the gallbladder is likely to be thick, fibrotic and does not distend. The most likely cause here would be a pancreatic carcinoma.
A 35-year-old woman presents with sudden onset of jaundice, fever, rigors and severe pain. She is tender in the right upper quadrant but the gall bladder is not palpable. Liver function tests reveal grossly elevated bilirubin, AST and alkaline phosphatase.
Cholangitis
The triad of jaundice, fever and severe pain is indicative of cholangitis. It is seen more commonly in the Far East.
A 35-year-old woman on routine medical examination and biochemical screening is found to have a mildly raised bilirubin and alkaline phosphatase. She has had one episode of right hypochondrial pain following a cheese and wine party the previous Christmas. Ultrasound examination showed the presence of multiple small stones in the gallbladder and a common bile duct with a diameter just over the upper normal limited, but no abnormalities.
Gallstone in the common bile duct
The final patient has an asymptomatic stone in the CBD and if laparoscopic cholecystectomy is undertaken there is a high chance of finding a stone in the CBD on cholangiography.
One of your patients suffers from a cardiac arrhythmia that gives rise to syncope.
He continues to drive despite your having made all reasonable efforts to explain to him that this is unsafe.
Which of the following should your response be?
(Please select 1 option)
As the patient has a right to confidentiality you may not take the matter any further
Inform the DVLA
Inform the patient’s solicitor
Inform the police
It is the legal obligation of the patient to inform the authorities of his disability; hence you are not obliged to take any further action
Inform the DVLA
In such a situation your duty to society overrides any right of an individual to confidentiality.
The ultimate responsibility is yours and you have to inform the DVLA. Of course, it would be important to inform the patient’s next of kin first to try to get the patient to stop driving voluntarily.
On the DVLA website there is a document on medical reasons for being unfit to drive and when patients can start driving again after a medical event. This include the size of aortic aneurysms as well as obvious reasons such as epilepsy.
A 32-year-old female patient has had multiple resections of the bowel on account of recurrent Crohn’s disease.
This has resulted in intestinal failure and she is dependent on home parenteral nutrition. She has a Broviac catheter inserted for central venous access.
She presents with fever accompanied by chills and rigors. No physical signs are demonstrable. Cultures taken both centrally and peripherally demonstrate the presence of methicillin-sensitive Staphylococcus aureus.
Your next course of action would be which of the following?
(Please select 1 option)
Determine the antibiotic sensitivity prior to commencing antibiotic treatment
Do not use the intravenous line until the infection has been successfully eradicated.
Remove the intravenous line
Treatment with intravenous teicoplanin for 14 days followed by repeat cultures
Treatment with intravenous vancomycin for 14 days followed by repeat cultures
Remove the intravenous line
One of the main complications of parenteral nutrition is infection of the central line.
Educating the patient and carers may reduce this.
However, line infections do occur and infection with Staphylococcus aureus and Candida are indications for line removal.
A 55-year-old male is admitted as an emergency with severe abdominal pain.
He smokes 30 cigarettes a day and takes approximately 30 units of alcohol per week but admits to exceeding this amount sometimes.
He also complains of sudden deterioration in vision. Ophthalmoscopy shows multiple micro infarcts (cotton wool spots).
What investigation would best confirm your diagnosis and guide treatment?
(Please select 1 option)
Blood glucose
CT scan abdomen
E.R.C.P.
Mesenteric angiogram
Upper GI endoscopy
CT scan of the abdomen
Ischaemic retinopathy, which causes retinal oedema and micro infarcts, causes acute visual loss.
This is a complication of acute pancreatitis.
CT scanning will be useful in diagnosis and evaluation of pancreatitis.
The surgical registrar on duty calls you to ask for advice.
A 24-year-old female patient was admitted under their care the previous night and underwent a diagnostic laparoscopy for investigation of abdominal pain. The examination was normal, the pain has subsided and the plan is to discharge the patient.
The patient is from abroad and wants to travel back to her home country. She would like to know how soon after laparoscopy she might undertake an airline flight.
What would your reply be?
(Please select 1 option)
48 hours
After five days
After one week
Immediately
Ten days
48hrs
Modern aircraft normally cruise at between 35,000 to 43,000 feet.
As this environment would be non-physiological, the aircraft cabin is pressurised to a maximum cabin altitude of 8,000 feet. This reduced atmospheric pressure would cause gas in body cavities to expand by 30 - 40%.
Hence, air travel should be delayed for 48 hours after laparoscopy to allow all gas to be absorbed.
A 72-year-old female presents with a longstanding leg ulcer. Which of the following minerals is most important in wound healing? (Please select 1 option) Copper Magnesium Potassium Selenium Zinc
Zinc This is the correct answerThis is the correct answer
Certain supplements are important in wound healing particularly zinc, vitamin C and arginine.
Zinc is a component of many of the enzymes responsible for wound healing.