|Year : 2007 | Volume
| Issue : 3 | Page : 237-239
Anaesthetic management of bilateral phaeochromocytoma in a young female patient
Mina Basu1, Sampa Datta Gupta2, Soma Mukhopadhyay3, Subrata Saha4
1 DA., MD., Additional Professor, Department of Anaesthesiology, Institute of Postgraduate Medical Education and Research, SSKM Hospital, Kolkata, India
2 MD., Assistant Professor, Department of Anaesthesiology, Institute of Postgraduate Medical Education and Research, SSKM Hospital, Kolkata, India
3 DA., MD., RMO-cum Clinical Tutor, Department of Anaesthesiology, Institute of Postgraduate Medical Education and Research, SSKM Hospital, Kolkata, India
4 PG Student, Department of Anaesthesiology, Institute of Postgraduate Medical Education and Research, SSKM Hospital, Kolkata, India
|Date of Acceptance||11-Apr-2007|
|Date of Web Publication||20-Mar-2010|
Sampa Datta Gupta
42, Lake Place, Kolkata - 29
Source of Support: None, Conflict of Interest: None
Phaeochromocytoma is a catecholamine secreting tumour that typically occurs in patients of 30 - 50 years age.
A female patient 28-year-old with bilateral phaeochromocytoma presented with hypertension and hyperglycemia. Diagnosis was confirmed by CT scan of the abdomen and raised 24 hrs urinary catecholamine and vanillylmandelic acid.
The patient was scheduled for excision of tumour. Pre-operative blood pressure was controlled with prazosin and metoprolol, hyperglycemia was controlled with soluble human insulin. The anaesthetic technique used was general anaesthesia with control of blood pressure during operation and manipulation of tumour with sodium nitroprusside (SNP) infusion and after removal of tumour with noradrenaline infusion and fluid replacement.
Keywords: Phaeochromocytoma; Hypertension; Anaesthetic management.
|How to cite this article:|
Basu M, Gupta SD, Mukhopadhyay S, Saha S. Anaesthetic management of bilateral phaeochromocytoma in a young female patient. Indian J Anaesth 2007;51:237-9
|How to cite this URL:|
Basu M, Gupta SD, Mukhopadhyay S, Saha S. Anaesthetic management of bilateral phaeochromocytoma in a young female patient. Indian J Anaesth [serial online] 2007 [cited 2020 Feb 24];51:237-9. Available from: http://www.ijaweb.org/text.asp?2007/51/3/237/61151
| Introduction|| |
Phaeochromocytoma is a catecholamine secreting tumour that originates in the adrenal medulla or in chromaffin tissues along the paravertebral sympathetic chain extending from the pelvis to the base of the skull  . More than 95% of all phaeochromocytomas are found in the abdominal cavity and 90 % originate in the adrenal medulla. 10% of these tumours involve both the adrenal glands. Less than 10% of phaeochromocytomas are malignant. Phaeochromocytoma typically occurs in patients of 30 - 50 years age. Approximately 0.1% of the hypertensives suffer from this surgically correctable cause of hypertension which is often fatal if left untreated. Phaeochromocytoma can also occur as part of multiple endocrine neoplasias (MEN). 
This case report describes the peri-operative anaesthetic management in a patient with bilateral phaeochromocytoma.
| Case report|| |
A 28-year-old, 49 kg, female patient was admitted with sudden hypertensive crisis along with vomiting and hyperglycaemia. Blood pressure was 230 / 120 mm of Hg. Blood sugar was 350 mg.dl-1. There was no definite history of headache, palpitation, diaphoresis, pain abdomen. Bilateral phaeochromocytoma was diagnosed by raised level of catecholamines and vanillylmandelic acid (VMA) in 24 hours urine collection, ultrasound and CT -scan. CT scan report showed a large mixed dense heterogenous mass with few wall calcification at left adrenal region measuring 10.11 cm x 8.02 cm x 7.7cm. Another solid fairly homogenous mass was noted inferomedial to the above mass with an area of continuity measuring 3.85cm x 3.30 cm. On right side a heterogenous mass was noted to originate from lateral limb of right adrenal gland measuring 2.24 cm x 2.01 cm. Other investigations like blood urea, creatinine, haemoglobin percentage, differential count, serum electrolytes were within normal limits. Her blood pressure was controlled with oral prazosin 10 mg once daily and metoprolol 12.5 mg once daily. ECG was free of ST changes for last 2 weeks, no ventricular ectopics noted. Her blood sugar was controlled with insulin 8 - 8 - 6 unit (soluble human insulin) subcutaneously. Patient was posted for bilateral adrenalectomy when blood pressure was about 140 / 90 mm Hg with no sign of postural hypotension and blood sugar was controlled to 130 mg.dl -1 postprandial. Haematocrit was also near normal.
| Anaesthetic management|| |
Alprazolam 0.25 mg P.O. was given at night before operation. Morning doses of oral antihypertensive and diazepam 10 mg P.O. were given, morning dose of insulin was omitted. Pre-operative blood glucose was 131mg.dl-1, blood pressure was 150/76 mm Hg, heart rate was 76/min, SpO2 was 99% in room air. After securing intravenous access with 16 G intravenous cannula, 5% dextrose infusion was started. Monitors were attached for continuous monitoring of NIBP, SpO 2 and ECG. Midazolam 2 mg, fentanyl 100 mcg and ranitidine 50mg were administered intravenously as premedication. After proper preoxygenation patient was induced with propofol 1% 100mg and trachea was intubated with 7.0mm I.D. cuffed endotracheal tube after achieving adequate relaxation with rocuronium bromide 50mg. Lidocaine (without preservative) 1.5 mg.kg-1 body weight intravenously was administered 1 minute before laryngoscopy to minimize adverse cardiovascular effects of laryngoscopy and intubation. Blood pressure after induction was 126/70 mm Hg and after intubation was 144/70 mm Hg. A central venous access was established through subclavian approach after intubation for continuous central venous pressure monitoring. Maintenance of anaesthesia was done by positive pressure ventilation with O2 and N2O as 50% : 50% along with supplemental doses of fentanyl and vecuronium bromide. Propofol was administered by a syringe pump at a rate of 100 mg.hr-1.
During the excision and manipulation of tumour mass of both sides there was rapid fluctuation of blood pressure which rose maximum upto 280/160 mm of Hg and was controlled by infusion of sodium nitroprusside (50 mg SNP in 500 ml of 5% dextrose) incrementally throughout the procedure as per requirement. During removal of second tumour the precipitous fall of blood pressure was restored by rapid infusion of crystalloid (Ringer's lactate 4 L) and colloids (Hydroxyethyl starch 6% 1 L). Hydrocortisone 400mg was administered immediately after removal of 2 nd tumour mass. Blood pressure was restored by infusion of noradrenaline. Urine output was adequate throughout the procedure ( at a rate of 1.5 ml.kg-1.hr-1). Capillary blood sugar level was monitored and adjusted with infusion of insulin as per sliding scale throughout the procedure. At the end of surgery incision line was infiltrated with 0.25% bupivacaine (20 ml). Residual neuromuscular blockade was reversed with neostigmine 0.05 mg.kg -1 with glycopyrrolate 0.01 mg.kg -1 at the end of surgery. Patient was kept in ICU under close supervision for continuous monitoring of NIBP, CVP, SpO2 % and capillary blood glucose (CBG) changes and urine output for next 24 hrs for proper management and quick postoperative recovery. To maintain B.P., noradrenaline infusion was continued in the post-operative period. Hydrocortisone 100 mg I.V. 6 hourly was also administered. When patient's haemodynamic status became stable, noradrenaline infusion was discontinued.
On subsequent post operative days, patient's B.P. and blood glucose level gradually came to near normal, patient was discharged on 16th post-operative day with oral hydrocortisone tablet 10 mg in the morning and 5 mg in the evening.
| Discussion|| |
A substantial proportion of phaeochromocytoma secretes predominantly norepinephrine, sometimes paroxysmal but usually sustained and often in huge quantities. Sustained severe hypertension is often the commonest presentation of phaeochromocytoma.  There is also vasoconstriction in arteriolar and venous sites due to released norepinephrine and thereby decreasing the circulating blood volume. Diagnosis is usually confirmed by raised urinary catecholamine and VMA in 24hrs urine. Localization of tumour is accurately done by CT scan, MRI, MIBG scan. ,
Main aim is resolution of symptoms in the pre- operative period so that wide variation in arterial pressure does not take place during operation. This is achieved by antiadrenergic drugs i.e. alpha (á) and beta (â) blockers. The sympathetic blockade is achieved first by á adrenergic blocker followed by á â- blocker. Alpha blockade results in vasodilatation and tachycardia which is controlled by beta blockers. If beta blockade is achieved first then there may be unopposed vasoconstriction in skeletal muscles causing hypertension. Twenty four hours ambulatory blood pressure monitoring should show a blood pressure of 140/90 mm of Hg and a heart rate of less than 100 bpm. Lying and standing blood pressure should show a postural drop upto but not less than 80/45 in standing position. More drop indicates inadequate hydration. ECG should be free of ST changes for at least 2 weeks. Mortality is due to ignoring subtle changes of cardiomyopathy.
In our case we used prazosin, a selective á1- blocker,. Prazosin interferes selectively with post synaptic á- adrenergic receptor function. Prazosin causes less tachycardia and postural hypotension than other á adrenoreceptor blockers. Here we used metoprolol as -â blocker in small doses. 
Goal of anaesthetic management should be aimed to provide optimal surgical condition and to suppress the responses to endotracheal intubation, surgical stimulation, tumour handling and devascularization. Here we preferred general anaesthesia for our patient as it was a transabdominal approach.
Pre-medication should be according to choice of anaesthesiologists but drug causing histamine release should be avoided.  Here in our case we used benzodiazepine as premedication to reduce anxiety induced activation of sympathetic nervous system.
In our case we used propofol 1% as induction agent and fentanyl, a potent short acting opioid as analgesic as both of them can modify the haemodynamic effect of laryngoscopy and intubation. Lidocaine (preservative free) 1.5 mg.kg-1 i.v. was administered 1 min. before laryngoscopy to attenuate pressure response of laryngoscopy and intubation. 
Rocuronium was used for intubation instead of suxamethonium because latter causes histamine release and compression of abdominal tumour during fasciculation  . Vecuronium was used as muscle relaxant for maintenance of anaesthesia due to its cardiovascular stability and inability to release histamine. Sodium nitroprusside in fusion was used to control rise of blood pressure during handling of tumour . After removal of tumour blood pressure was maintained with noradrenaline infusion and crystalloids and colloids. Hydrocortisone replacement was also given. Glucocorticoid and mineralocorticoid cover is mandatory for patients undergoing bilateral adrenalectomy .
To conclude, proper diagnosis and management of phaeochromocytoma is necessary. Early involvement of anaesthesiologists is also essential. Today early diagnosis is possible with CT-scan, MRI and by 24 hrs urinary catecholamine and its metabolites estimation. With better understanding of pathophysiology of phaeochromocytoma, management of hypertension with á- adrenoreceptor blocker and if necessary using â- blocker is possible. Proper monitoring, adequate fluid replacement and also availability of drugs which can rapidly alter blood pressure and development of newer sophisticated techniques of anaesthesia make the surgical resection of phaeochromocytoma as safe as other tumour resection. Operative mortality has also reduced now-a-days.
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