It was the first week in January and I was beginning the New Year with a visit to the hospital. Since my vertigo attack, and experiencing increased dizziness during the past few months, I had been referred to a Vestibular Audiologist to carry out some tests. The vestibular system is the inner ear balance mechanism, which works with our eyes and parts of our brain to stop objects blurring when the head moves. I was at the hospital to carry out some Vestibular Function Tests (VFTs) to determine the health of my inner ear balance system; in particular that of my right and only hearing ear. In preparation for the tests I was told to eat breakfast 3 hours beforehand; to not wear makeup or face cream; and to refrain from consuming caffeine or alcohol for the 48 hours leading up to the tests.
The first test was called a Video Head Impulse Test (vHIT). A friendly looking woman asked me to sit on a chair facing a wall. On the wall was a silver sticker that was the shape of a paint splodge. She fixed some goggles over my eyes, fiddling with an elasticated strap to make sure they were secured tightly; the plastic pressing into the skin around my eye sockets. She forced my right eye wide-open and trapped it in position with the goggles. She then sat to the left of me at a small desk with a computer. I began to realise that the goggles were making a high pitched noise that I could hear in my right ear. I wondered if they were making the same sound next to my deaf ear; undetected. I figured the glasses had a camera embedded inside them, and that the data would be sent to the computer and then interpreted through some software. I couldn’t look at the screen or what the woman was doing, as she told me to focus my vision on the paint splodge. I sat there for a while whilst I heard her gently tapping the computer keys.
After about 10 minutes she stood up and said something to me in Spanish that I didn’t quite hear nor understand. She held my head in her hands, and started to move it with small sudden motions. During this procedure I had to continue keep my focus on the splodge. She carried out this process in 4 short sessions, each one lasting approximately 5 minutes. My hair kept escaping from her grasp and individual strands fell randomly to my face. She kept moving them away and commented on how fine my hair was. After the third session her phone rang and she had a chat with someone who I gathered, from a few moments of concentrating on her Spanish conversation, were family. It was still Christmastime and the feeling in the hospital was more relaxed than usual. Whilst she was speaking I took the opportunity to look at the computer screen. There was a close-up photo of one of my eyes, and two graphs that were being plotted with what I assume were the reactions of my eyes to each movement. One graph was plotted in a red curve, and the other in blue. I could see, at this moment, that my left side had received a ‘positive’ result and my right side a ‘negative’. I wasn’t sure what this meant, and the test wasn’t over yet. Once the test was finished I felt a little dizzy.
Next was the Caloric Stimulation procedure. I was asked to sit in a chair, similar to one you’d find in a dental clinic. The chair was reclined so that I was lying down and comfortable. Then she fixed another pair of goggles over my eyes. These were bigger than the previous, and pressed forcefully onto the bridge of my nose. The woman explained that the googles had cameras inside to film my eye movements. She then put covers over the lenses so that I lay in darkness. Next she gently tucked what I assume was a towel, under my chin and around my shoulders. Then, what felt like a small bowl, was placed under my right ear. She informed me that she was going to put some water into my ear and that it was going to sound very loud. She instructed me to keep my eyes open once the water supply stopped. She was going to start by using cold water and would test my right (hearing) ear first. Well, I wasn’t really prepared for what happened next.
I had imagined that a small amount of water would be squirted into my ear; perhaps a syringe-full. First, I heard a mechanical-sounding Spanish voice, coming from a machine – I think it was stating the measurement of water or pressure that had been selected for the test. Then my ear was filled with a high-powered continuous stream of water. It sounded like a storm inside my head. The sensation of the water going in felt cold and as though I was having an intense ear-clean, though it wasn’t too uncomfortable. Once the water stopped flowing, I felt it start to drain out of my ear; trickling into the bowl. I forced my eyes wide open as I had been instructed, and then the dizziness began. The woman had left my side, and I assumed she was now at her computer checking the results. It felt like a mild attack of vertigo. I watched the blackness of the inside of the goggles swirl from one side to the other, and started to feel a little sick. I was aware that the woman was saying something to me, but with some water still in my ear, I was unable to hear her. When all the water had drained, I heard a small satisfying pop and I could hear again. I told her I felt a little sick and dizzy. Once she had the results she needed, she let me rest for a while with my eyes closed. Next she performed the same routine on my deaf ear. This time the sound of the water entering my ears was silenced; a muffled gurgle. The dizziness following the water spray was slightly more intense, and again I was allowed to rest with my eyes closed, following the taking of results.
I hoped the test was over, but she informed me that she would now repeat the procedure on both ears; this time with hot water. The hot water was a little more uncomfortable than the cold had been, as it entered my ear. As soon as the water began to trickle out, an intense wave of dizziness overtook me. I tried to control my breathing. I started to sweat. I told her I felt really sick. I managed to control the dizziness and the nausea, and was allowed to rest a little longer with my eyes closed. I was also instructed to keep my eyes closed as she performed the hot water test in my left (deaf) ear, but to open my eyes wide again once the water stopped. There was some discomfort as it streamed into my ear, accompanied by the subdued sound. I opened my eyes widely once the water pressure had stopped, and I was immediately hit by a surge of strong vertigo. I wanted to close my eyes. I wanted to sit up. I was told to keep my eyes open for a few more seconds whilst the results were being taken. I was sweating more. I became aware of my heart beating wildly in my chest. I focused on controlling my breath; breathing out deeply with my lips puckered tightly into a circle. I held onto the side of the chair to try and keep myself stable.
She rushed over to me and carefully brought the chair back up into a sitting position, and placed what looked like an adult nappy across my forearms and under my chin. She told me to breathe and relax. My stomach cramped as though I was going to vomit, and my head jerked forward. Nothing. I realised why it had been necessary to fast during the three hours before the test. My arms and fingers were tingly and weak; the feeling I used to get as a child from carsickness. I breathed in controlled breaths for some time, as the woman continued to do things at her computer. I started to feel better.
A familiar face appeared in the doorway – it was the specialist who I had consulted with when I first lost my hearing. She recognised me and asked me if I was OK, and she wished me a Happy New Year. The woman made me wait a little while longer after feeling better and then she gave me a sealed envelope, addressed to the ENT department, containing the test results. I would take these with me to my next consultation to discuss with a specialist. I was then allowed to leave the room and go to my boyfriend who was waiting for me outside.