Departments of 1Neurosurgery and 2Otolaryngology-Head and Neck Surgery, University of Virginia Health System, Charlottesville, Virginia; and 3Department of Neurosurgery, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts
INCLUDE WHEN CITING Published online May 20, 2016; DOI: 10.3171/2016.3.JNS152735.
Correspondence John A. Jane Jr., Department of Neurological Surgery, University of Virginia, Box 800212, Charlottesville, VA 22908. email:jaj2k@virginia.edu.
Abstract
OBJECTIVE
The object of this study was to compare the outcomes of primary and revision transsphenoidal resection (TSR) of nonfunctioning pituitary macroadenomas (NFPMAs) using endoscopic methods.
METHODS
The authors retrospectively reviewed the records of 287 consecutive patients who had undergone endoscopic endonasal TSR for NFPMAs at their institution in the period from 2005 to 2011. Fifty patients who had undergone revision TSR were retrospectively matched for age, sex, and duration of follow-up to 46 patients who had undergone primary TSR. Medical and surgical complications were documented, and Kaplan-Meier analysis was performed to assess rates of radiological progression-free survival (PFS).
RESULTS
The median follow-up periods were 45 and 46 months for the primary and revision TSR groups, respectively. There were no significant differences between the primary and revision groups in rates of new neurological deficit (0 in each), vascular injury (2% vs 0), postoperative CSF leak (6% vs 2%), transient diabetes insipidus (DI; 15% vs 12%), chronic DI (2% vs 2%), chronic sinusitis (4% vs 6%), meningitis (2% vs 2%), epistaxis (7% vs 0), or suprasellar hematoma formation (0 vs 2%). However, patients who underwent primary TSR had significantly higher rates of syndrome of inappropriate antidiuretic hormone (SIADH; 17% vs 4%, p = 0.04). Patients who underwent primary operations also had significantly higher rates of gross-total resection (GTR; 63% vs 28%, p < 0.01) and significantly lower rates of adjuvant radiotherapy (13% vs 42%, p < 0.01). Radiological PFS rates were similar at 2 years (98% vs 96%) and 5 years (87% vs 80%, p = 0.668, log-rank test).
CONCLUSIONS
Patients who underwent primary TSR of NFPMAs experienced higher rates of SIADH than those who underwent revision TSR. Patients who underwent revision TSR were less likely to have GTR of their tumor, although they still had a PFS rate similar to that in patients who underwent primary TSR. This finding may be attributable to an increased rate of adjuvant radiation treatment to subtotally resected tumors in the revision TSR group.
HYANNIS – Endoscopic surgery for pituitary tumors involves the use of small instruments, but neurosurgeon Nicholas Coppa, MD, FAANS, is quick to say it takes a big team to make the surgeries a success.
“It’s very much a collaborative effort among endocrinology, neurosurgery and otolaryngology specialties,” he said.
Dr. Coppa frequently works with endocrinologist Catalina Norman, MD, PhD, and ear, nose and throat surgeon Ross Johnston, MD.
The pituitary gland sits at the base of the brain. It makes important hormones that control several different systems in the body and help maintain normal body function.
“The overwhelming majority of patients with big tumors present with visual problems,” said Dr. Coppa. “They get tunnel vision from a tumor putting pressure on the vision nerves.
Many patients’ pituitary problems are detected incidentally while the physician is trying to diagnose a set of symptoms, most commonly headaches, he added. A variety of asymptomatic tumors are detected this way.
A subset of pituitary tumors secrete excess hormones, which create syndromes characterized by whatever hormone is being secreted in excess, Dr. Coppa added. Oftentimes these problems are diagnosed by an endocrinologist.
Before coming to Neurosurgeons of Cape Cod – now known as Cape Cod Healthcare Neurosurgery – in 2013, Dr. Coppa was professor of skull base surgery at Oregon Health and Science University’s Northwest Pituitary Center. He has performed more than 200 endoscopic surgeries for pituitary tumors, sinonasal malignancies and anterior skull base encephaloceles. The procedure is fairly new on Cape Cod, he said.
The pituitary gland is about the size of a pea, so operating on it is a tricky and delicate procedure.
The surgeon commonly works with an endoscope inserted through one nostril, and microsurgical instruments through the other nostril. This allows him to maneuver to the surgical area.
According to the Northwest Pituitary Center’s web site, “The tube is connected to a TV monitor that helps your doctor see the surgical area even more clearly than with a microscope. Your doctor can also use intraoperative neuro-navigation to perform image-guided surgery, based on a pre-operative CT scan or MRI. This helps the doctor see exactly where the tumor is and avoid damaging healthy brain tissue that is nearby.”
Nasal endoscopy for the neurosurgeon has really taken off in the last 10 years, according to Dr. Coppa. The main reason for the increase is because the technique allows better visualization of the anatomy, he said.
“We find that it allows, at least in my experience, more maneuverability of your micro-surgical instruments. That’s been very satisfying for patients. The nasal morbidity [adverse effects] is lower compared to historic ways of doing it.”
Ear, nose and throat doctors use trans-nasal surgery to treat many sinus conditions, said Dr. Coppa. But the procedure is predominantly used by neurosurgeons for pituitary tumors, other tumors of the skull base and malignancies of the sinus cavity that often invade the brain.
After endoscopic pituitary surgery, patients are typically in the hospital for several days and resume day-to-day activities within that first week.
Cushing’s and Addison’s Disease. An endocrine NCLEX review on how to differentiate between Cushing’s Syndrome/Disease vs Addison’s and Addisonian Crisis. In this video, I will discuss the pathophysiology, signs & symptoms, and nursing interventions for these endocrine disorders of the adrenal cortex and pituitary glands.
Addison’s Disease and Cushing’s Syndrome/Disease review notes for nursing school and NCLEX exam. In nursing school and for the NCLEX exam, you will need to know how to provide care to a patient with either Addison’s Disease or Cushing’s.
However, many students get these two endocrine disorders confused, but these review notes will help you differentiate between them.
These NCLEX review notes will cover:
Signs and Symptoms of Addison’s Disease vs Cushing’s
Causes of Addison’s Disease and Cushing’s
Nursing Management of Addison’s Disease and Cushing’s
Role of Adrenal Cortex: releases steroid hormones and sex hormones
Role of Aldosterone: regulates blood pressure through renin-angiotensin-aldosterone system, helps retain sodium and secretes potassium (balances sodium and potassium levels).
Role of Cortisol: “STRESS Hormone” helps the body deal with stress such as illness or injury, increases blood glucose though glucose metabolism, break downs fats, proteins, and carbs, regulates electrolytes.
Cushing’s (Syndrome & Disease)
Cushing’s: hyper-secretion of CORTISOL (watch video for clever ways to remember this)
Cushing’s Syndrome vs Cushing’s Disease
Cushing’s Syndrome: caused by an outside cause or medical treatment such as glucocorticoid therapy
Cushing’s Disease: caused from an inside source due to the pituitary gland producing too much ACTH (Adrenocorticotropic hormone) which causes the adrenal cortex to release too much cortisol.
Signs & Symptoms of Cushing’s
Remember the mnemonic: “STRESSED” (remember there is too much of the STRESS hormone CORTISOL)
Skin fragile
Truncal obesity with small arms
Rounded face (appears like moon), Reproductive issues amennorhea and ED in male(due to adrenal cortex’s role in secreting sex hormones)
Ecchymosis, Elevated blood pressure
Striae on the extremities and abdomen (Purplish)
Sugar extremely high (hyperglycemia)
Excessive body hair especially in women…and Hirsutism (women starting to have male characteristics), Electrolytes imbalance: hypokalemia
Dorsocervical fat pad (Buffalo hump), Depression
Causes of Cushing’s
Glucocorticoid drug therapy ex: Prednisone
Body causing it: due to tumors and cancer on the *pituitary glands or adrenal cortex, or genetic predisposition
Nursing Management for Cushing’s Syndrome
Prep patient for Hypophysectomy to remove the pituitary tumor
Prep patient for Adrenalectomy:
If this is done educate pt about cortisol replacement therapy after surgery
Risk for infection and skin breakdown
Monitor electrolytes blood sugar, potassium, sodium, and calcium levels
Addison’s Disease
Addison’s: Hyposecretion of Aldosterone & Cortisol (watch the video for a clever way on how to remember this and not get it confused with Cushing’s)
Signs & Symptoms of Addison’s Disease
Remember the phrase: “Low STEROID Hormones” (remember you have low production of aldosterone & cortisol which are STEROID hormones)
Sodium & Sugar low (due to low levels of cortisol which is responsible for retention sodium and increases blood glucose), Salt cravings
Tired and muscle weakness
Electrolyte imbalance of high Potassium and high Calcium
Reproductive changes…irregular menstrual cycle and ED in men
lOw blood pressure (at risk for vascular collapse)….aldosterone plays a role in regulating BP
Increased pigmentation of the skin (hyperpigmentation of the skin)
Diarrhea and nausea, Depression
Causes of Addison’s Disease
Autoimmune due to the adrenal cortex becoming damaged due to the body attacking itself:
Tuberculosis/infections
Cancer
Hemorrhaging of the adrenal cortex due to a trauma
Nursing Management of Addison’s Disease
Watching glucose and K+ level
Administer medications to replace the low hormone levels of cortisol and aldosterone
For replacing cortisol:
ex: Prednisone, Hydrocortisone
Education: Patient needs to report if they are having stress such as illness, surgery, or extra stress in life ( will need to increase dosage), take medication exactly as prescribed….don’t stop abruptly without consulting with MD.
For replacing aldosterone:
ex: Fludrocortisone aka Florinef
Education: consume enough salt..may need extra salt
Wearing a medical alert bracelet
Eat diet high in proteins and carbs, and make sure to consume enough sodium
Avoid illnesses, stress, strenuous exercise
Watch for Addisonian Crisis
This develops when Addison’s Disease isn’t treated.
In addisonian crisis, the patient has extremely LOW CORTISOL levels (life threatening).
Remember the 5 S’s
Sudden pain in stomach, back, and legs
Syncope (going unconscious)
Shock
Super low blood pressure
Severe vomiting, diarrhea and headache
NEED IV Cortisol STAT:
Solu-Cortef and IV fluids (D5NS to keep blood sugar and sodium levels good and fluid status)
Watch for risk for infection, neuro status (confusion, agitation), electrolyte levels (sodium and potassium, glucose)
Adrenal insufficiency, a rare disorder which is characterized by the inadequate production or absence of adrenal hormones, may be classified as primary adrenal insufficiency in case of direct affection of the adrenal glands or secondary adrenal insufficiency, which is mostly due to pituitary or hypothalamic disease.
Primary adrenal insufficiency affects 11 of 100,000 individuals. Clinical symptoms are mainly nonspecific and include fatigue, weight loss, and hypotension. The diagnostic test of choice is dynamic testing with synthetic ACTH.
Patients suffering from chronic adrenal insufficiency require lifelong hormone supplementation. Education in dose adaption during physical and mental stress or emergency situations is essential to prevent life-threatening adrenal crises.
Patients with adrenal insufficiency should carry an emergency card and emergency kit with them.
CushieBlog 