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Pulsatile Tinnitus

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Last Update: January 14, 2020.

Introduction

Tinnitus is the perception of sound absent an auditory stimulus and is a common complaint in the office. Tinnitus can be an acute or chronic issue depending on the pathophysiology. Up to 75% of adults have experienced at least one episode of acute or chronic tinnitus.[1] To make an accurate diagnosis is important to classify tinnitus with a thorough history and physical. There are many ways to categorize tinnitus. However, one way is to differentiate them into pulsatile vs. nonpulsatile. The most common cause of tinnitus is nonpulsatile, usually due to presbycusis.[2] Since non-pulsatile is much more common than pulsatile tinnitus, the diagnosis and treatment of pulsatile tinnitus can present a challenge for practitioners. One way to categorize pulsatile tinnitus is into vascular vs. nonvascular causes. Vascular causes can then be broken down further into arterial vs. venous etiologies. Many times, this difference is possible with history and physical exam, but there is a crucial role for radiographic imaging as well.[3] This activity will discuss the broad etiologies of pulsatile tinnitus as well as describe one way to organize the work-up for this complex symptom. Despite being a relatively uncommon complaint, early detection and treatment are imperative for positive patient outcomes.

Etiology

The etiology of pulsatile tinnitus can broadly break down into two categories vascular vs. nonvascular. Vascular causes can then subcategorize into arterial vs. venous with arterial causes being more common.[4] Arterial causes are commonly caused by turbulent flow through arteries. This condition can range from narrowing of the lumen to condition aneurysms, which disrupt the laminar flow normally present in blood vessels. It is this turbulent flow that patients can hear, causing pulsatile tinnitus. The most common etiology of pulsatile tinnitus is atherosclerotic carotid disease. Stenosis in the carotid arteries will cause turbulent flow through the carotids, which will be perceived by the patient as ipsilateral pulsatile tinnitus. Stenosis may also be due to more systemic disease such as fibromuscular dysplasia or Takayasu disease. Another common vascular cause is paragangliomas, also known as glomus tumors, of the jugular foramen and middle ear. This condition may is observable on otoscopy, and patients will usually present with unilateral pulsatile tinnitus. The most common venous cause is idiopathic intracranial hypertension (IIH), also known as pseudotumor cerebri. These patients may have bilateral pulsatile tinnitus; this is most commonly seen in young, obese females who may also complain of vision changes and headaches. The proposed pathophysiology is that patients perceive rhythmic changes in cerebrospinal fluid pressure. The less common non-vascular etiologies include metabolic diseases causing increase cardiac output (such as pregnancy, anemia, and thyrotoxicosis) and myoclonus of palate and middle ear musculature. Figure 1 is a flowchart with a more extensive list of other etiologies that can cause pulsatile tinnitus. It organizes in a way that can help practitioners narrow down the differential, which will, in turn, help guide management decisions.[1][4][2][5][6][3]

Epidemiology

The epidemiology of tinnitus is poorly defined as there is no standard for determining tinnitus in patients. Up to 75% of adults have experienced at least one episode of tinnitus.[2] A recent literature review on tinnitus estimated the prevalence of persistent tinnitus to be between 5.1 to 42.7% with a male predominance.[7] The wide range is likely due to the differences in inclusion criteria from each study evaluated. Prevalence tends to increase in age as presbycusis is a common cause of tinnitus. There is an overestimate of pulsatile tinnitus, however, as less than 10% of tinnitus patients have pulsatile tinnitus.[1]

History and Physical

When a patient presents with tinnitus, the most critical step is to get a thorough history. One of the most important distinctions to make is if the tinnitus is pulsatile or nonpulsatile. The next step is to determine if the tinnitus is unilateral or bilateral. This distinction will help with directing your questioning and eventually guide your workup. Both pulsatile and nonpulsatile tinnitus can be unilateral or bilateral. Other important questions include the onset of symptoms, aggravating or alleviating factors, duration, and change in symptom quality or severity.[7] Getting a sense of how loud the tinnitus is to the patient may add conditions to the differential. If patients complain of very loud, unbearable pulsatile tinnitus, the clinician should add an arteriovenous malformation to the differential. Tinnitus complaints warrant a thorough otologic history, including inquiring about symptoms of hearing loss, vertigo, otorrhea, otalgia, noise exposure, and neurological defects in addition to a history of otitis media and head and neck surgeries is very important in building a differential. Practitioners should evaluate the patient’s medication list as certain medications are ototoxic such as antibiotics and chemotherapy agents. Over the counter medications such as nonsteroidal anti-inflammatory medications, aspirin, and herbal supplementations can worsen tinnitus symptoms. Past medical and family history is essential as various medical conditions can manifest with pulsatile tinnitus. A family history of autoimmune diseases is significant as this may raise concern for vasculitis, such as Takayasu disease, which may manifest as pulsatile tinnitus. Some examples include uncontrolled hypertension, which may suggest fibromuscular dysplasia.

The physical exam is essential for patients with pulsatile tinnitus. In general, the physical exam will allow the practitioner to further categorize the pulsatile tinnitus into subjective vs. objective. Every patient should receive an in-depth head and neck exam, paying particular attention to pneumatic otoscopy, cranial nerve exam, and tuning fork exams. Otoscopy may help in identifying paragangliomas, aberrant carotid arteries, otitis media, and eustachian tube dysfunction. Tympanic paragangliomas, also known as glomus tumors, may present as a pulsatile mass on the medial side of the tympanic membrane. A rhythmic motion of the tympanic membrane may be suggestive of tensor tympani myoclonus. Pneumatic otoscopy may suggest otosclerosis or cause nystagmus, which may be indicative of labyrinthine fistula. The palpation of the temporomandibular joint can help identify pathology, which may be contributing to symptoms.[5]

In addition to a head and neck examination, it is important to do a full cardiac exam on these patients, including auscultation for carotid bruits. The cardiac examination, along with vitals, can help evaluate causes such as carotid bruits, hypertension, and aortic stenosis. This is also a good time to ascertain if the tinnitus is synchronous with the heartbeat helping to identify if arterial pathology may be playing a role.[8] Practitioners should pay special attention to their palpatory exam feeling for any thrills or vascular abnormalities. 

Palpation can also help to evaluate if compression changes the patient’s symptoms, which may help differentiate venous vs. arterial etiologies. If compression of arterial structures decreases symptoms, it suggests an arterial cause. Compression of ipsilateral venous structures may decrease symptoms in venous etiologies such as high riding jugular bulb, while compression of the contralateral side may increase symptoms. Rotation of the head to the ipsilateral side of the tinnitus may also decrease symptoms in patients with pulsatile tinnitus due to venous pathology. Similarly, the Valsalva maneuver may reduce symptoms with a venous-cause.[1][4]

Evaluation

The work-up for patients with pulsatile tinnitus should begin with an audiologic evaluation, including pure tone and speech audiometry with tympanograms. If the examiner notes a low-frequency loss of at least 20 dB, it is appropriate to repeat an audiogram with light pressure over the ipsilateral internal jugular vein.[4] The resolution of deficit may be suggestive of IIH. Though the results of basic metabolic tests will likely be normal, they can be used to rule out certain medical diseases that may cause elevated cardiac output causing patients to have pulsatile tinnitus. 

Following audiogram and basic labs, clinical suspicion should guide the work-up.[3] Dopplers should be ordered for suspected arterial etiologies such as carotid stenosis before ordering more advanced radiological studies. In general, both CT and MRI are complementary imaging modalities to identify vascular etiologies of pulsatile tinnitus. Suspected arterial etiologies not well defined by duplex should get a CTA. CTA may also identify aneurysms, which may manifest as pulsatile tinnitus. MRV better evaluates venous etiology. It is appropriate to get a CT of the temporal bones if there is clinical suspicion for temporal bone pathology. Patients with focal nerve deficits are candidates for brain imaging, either CT or MRI, to evaluate for more serious causes of pulsatile tinnitus.[9][3] Other conditions may require further evaluation by specialists such as IIH, which can be diagnosed by normal brain CT/MRI and increased opening pressure on lumbar puncture. Performing an optic exam on these patients may reveal papilledema.

Treatment / Management

Up to 70% of patients will have an identifiable cause of their pulsatile tinnitus, which will direct patient management.[3] Treatment will largely have its basis on treating the specific pathophysiology of the patient. Therapeutic interventions may include a wide variety of medical professionals working together to coordinate care. Treatment can range from observation to medical management and surgery.[4][10] Some treatments for tinnitus, such as decreasing caffeine intake, cognitive behavior therapy, tinnitus retraining therapy, and sound therapy, may be offered to patients, but there are no studies regarding their efficacy specifically in pulsatile tinnitus patients.[11]

Differential Diagnosis

The differential for pulsatile tinnitus is very broad and can be overwhelming. It is essential first to try and determine if the tinnitus is vascular or non-vascular. Vascular lesions require further categorization into arterial vs. venous etiology. Figure 1 has a helpful flowchart that includes an extensive list of potential etiologies. Using this progression will help direct management and care for the majority of patients presenting with pulsatile tinnitus.

Prognosis

The prognosis for pulsatile tinnitus varies considerably based on the etiology. Pulsatile tinnitus due to extensive cardiovascular disease may have a detrimental impact on patient morbidity and mortality. However, other causes may have no serious long-term effects on the patient. It is also possible that patients will have a resolution of their symptoms following treatment of the underlying cause. Early detection and treatment are the optimal means to improve patient outcomes. 

Complications

Complications from pulsatile tinnitus will vary based on the etiology. Some pathology will be benign to the patient; however, the patient’s tinnitus may be a symptom of a much more serious disease. Morbidity is possible both from the pathophysiology itself and as a result of attempting to treat the patient with invasive modalities such as surgery and radiation.

Deterrence and Patient Education

It is essential to allow the patient to partake in their treatment plan, achieved by keeping them informed about their diagnosis. Despite the wide variety of etiologies for pulsatile tinnitus, it is vital that patients understand their disease process. One such example would be patients with carotid bruits. This group of patients should receive counsel on ways to improve their cardiovascular health and the importance of following up regularly with their primary care team. It is also important to reassure patients with idiopathic pulsatile tinnitus that there is no significant identifiable pathology. Some patients can tolerate their symptoms as long as they receive reassurance that they do not have serious pathology.[4]

Enhancing Healthcare Team Outcomes

Patients with pulsatile tinnitus can present in many different clinical environments. Health practitioners in primary care need to know when it is appropriate to refer patients to an otolaryngologist. In the otolaryngology office, the physician will work closely with the audiologist to help begin the work-up on the patient. Otolaryngology specialty trained nurses play a crucial role as they will help coordinate future appointments and imaging studies that may be necessary. They will also assist in educating the patient and family regarding the condition and any medications they try. After a thorough workup, the otolaryngologist needs to begin constructing a treatment team based on the suspected etiology of the patient’s symptoms. This team may include practitioners from radiology, neurosurgery, cardiology, otolaryngology nurses, and the primary care team. If surgery becomes a treatment modality, the health-care team will grow immensely to include nurses, surgical technicians, pharmacists, and physical therapists. These health care professionals will all play a vital role in providing patients with quality care, and a team approach will produce the best outcomes. [Level 5]

Questions

To access free multiple choice questions on this topic, click here.

Flowchart of Pulsatile Tinnitus Etiologies

Figure

Flowchart of Pulsatile Tinnitus Etiologies. Created by Christopher Lenkeit, DO

References

1.
Hofmann E, Behr R, Neumann-Haefelin T, Schwager K. Pulsatile tinnitus: imaging and differential diagnosis. Dtsch Arztebl Int. 2013 Jun;110(26):451-8. [PMC free article: PMC3719451] [PubMed: 23885280]
2.
Levine RA, Oron Y. Tinnitus. Handb Clin Neurol. 2015;129:409-31. [PubMed: 25726282]
3.
Pegge SAH, Steens SCA, Kunst HPM, Meijer FJA. Pulsatile Tinnitus: Differential Diagnosis and Radiological Work-Up. Curr Radiol Rep. 2017;5(1):5. [PMC free article: PMC5263210] [PubMed: 28203490]
4.
Sismanis A. Pulsatile tinnitus: contemporary assessment and management. Curr Opin Otolaryngol Head Neck Surg. 2011 Oct;19(5):348-57. [PubMed: 22552697]
5.
Villaça Avoglio JL. Dental occlusion as one cause of tinnitus. Med. Hypotheses. 2019 Sep;130:109280. [PubMed: 31383322]
6.
Keidar E, Kwartowitz G. StatPearls [Internet]. StatPearls Publishing; Treasure Island (FL): Jan 26, 2019. Tensor Tympani Syndrome. [PubMed: 30085597]
7.
McCormack A, Edmondson-Jones M, Somerset S, Hall D. A systematic review of the reporting of tinnitus prevalence and severity. Hear. Res. 2016 Jul;337:70-9. [PubMed: 27246985]
8.
Wu V, Cooke B, Eitutis S, Simpson MTW, Beyea JA. Approach to tinnitus management. Can Fam Physician. 2018 Jul;64(7):491-495. [PMC free article: PMC6042678] [PubMed: 30002023]
9.
Esmaili AA, Renton J. A review of tinnitus. Aust J Gen Pract. 2018 Apr;47(4):205-208. [PubMed: 29621860]
10.
Nicholson P, Brinjikji W, Radovanovic I, Hilditch CA, Tsang ACO, Krings T, Mendes Pereira V, Lenck S. Venous sinus stenting for idiopathic intracranial hypertension: a systematic review and meta-analysis. J Neurointerv Surg. 2019 Apr;11(4):380-385. [PubMed: 30166333]
11.
Langguth B. Treatment of tinnitus. Curr Opin Otolaryngol Head Neck Surg. 2015 Oct;23(5):361-8. [PubMed: 26261868]
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Bookshelf ID: NBK553153PMID: 31985946

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