Can Cats Go Into Heat After Being Fixed
What is ovarian remnant syndrome? 
Ovarian remnant syndrome is a condition that occurs when ovarian tissue remains within the torso after a female person cat is spayed. This tissue can produce estrogen, triggering signs of heat in the cat.
In an unspayed true cat, the ovaries produce a number of hormones, including estrogen. Information technology is this estrogen that triggers the cat to go into heat. When your pet is spayed, the entire reproductive tract (including both ovaries and the uterus) is surgically removed. Therefore, your spayed cat no longer has ovaries, produces estrogen, or goes into heat.
"If a previously-spayed animal shows signs of going into heat, this may point that functioning ovarian tissue (known as an ovarian remnant) is still present and producing estrogen."
If a previously-spayed animal shows signs of going into heat, this may indicate that operation ovarian tissue (known as an ovarian remnant) is still nowadays and producing estrogen. Ovarian remnants may be left behind during surgery, or may be caused by the presence of accessory ovarian tissue (a small-scale piece of tissue that fragmented off the ovary and established plenty of a blood supply to begin producing hormones).
What are the clinical signs of ovarian remnant syndrome?
The most obvious clinical sign of ovarian remnant surgery is when a previously spayed cat goes into heat. This can happen at any time later spay surgery, with a delay of months to years.
In cats, the signs of estrus are primarily behavioral. Cats do non develop a swollen vulva or vaginal belch. Signs of rut in cats include increased vocalization (to attract males), restlessness, increased efforts to get outside or escape the dwelling, and increased affection with owners. These cats volition often stand with their hind end in the air, treading their rear anxiety when petted over their lower back. Cats with functioning ovarian tissue typically go into heat seasonally, going through multiple cycles in the spring and summer.
How is ovarian remnant syndrome diagnosed?
Your veterinarian will diagnose the presence of ovarian remnant syndrome using i or more of the post-obit diagnostic tests.
1.Vaginal Cytology –This examination involves taking a swab from your pet'south vagina while she is showing signs of heat. Your veterinarian will assess the sample under the microscope for the presence of a specific type of prison cell called cornified cells. If these cornified cells are found, this indicates that your pet is under the influence of estrogen. Possible sources of estrogen include an ovarian remnant, estrogen from external sources (for instance, some topical hormonal creams used in human being medicine), or other hormonal imbalances. This test is oft used as a preliminary screening exam for the presence of an ovarian remnant, though it is non specific for an ovarian remnant.
two. Baseline Hormone Levels –A variety of studies have examined the use of baseline hormone testing in diagnosing ovarian remnant syndrome. All the same, these tests are not oftentimes recommended, due to low reliability. While aberrant hormone levels tin can indicate the presence of an ovarian remnant, normal hormone levels do not rule out the presence of an ovarian remnant.
3. Ultrasound –Ultrasound may be used to visualize ovarian tissue, if it is performed while the pet is in rut. The accurateness of this test, however, is influenced by the size of the ovarian remnant, the stage of the heat wheel during which the exam is performed, and the skill of the ultrasonographer. Again, this test is not oftentimes used.
4. Hormone Stimulation Test –This test is widely regarded as the nigh accurate exam for diagnosing ovarian remnant syndrome. A constructed hormone (hCG or GnRH) is administered while your pet is showing signs of oestrus. A blood sample is so drawn five to seven days subsequently. If the blood examination shows an increment in progesterone, this indicates the presence of functioning ovarian tissue.
How is ovarian remnant syndrome treated?
Ovarian remnant syndrome is treated by surgically removing the remaining ovarian tissue. This surgery should be performed while your pet is in heat, in order to maximize the chances of being able to visualize the remaining ovarian tissue.
"Ovarian remnant syndrome is treated by surgically removing the remaining ovarian tissue."
Rarely, a pet may develop signs of simulated pregnancy after existence spayed, due to the sudden removal of hormones. Signs of false pregnancy involve behavioral changes and the development of mammary tissue. If you lot feel that your pet may be showing signs of imitation pregnancy, please contact your veterinarian. Signs of faux pregnancy volition typically resolve without treatment in i to two months.
What happens if ovarian remnant syndrome is not treated?
Pets with an untreated ovarian remnant are subject to the same risks as pets that are not spayed. The connected presence of estrogen predisposes dogs and cats to mammary gland tumors (breast cancer), ovarian tumors, and pyometra (infection of the uterus). How can a cat have pyometra when the uterus is removed as part of the spay surgery? When a true cat is spayed, a minor part of the uterus is left above the cervix, which is called the uterine stump. The uterine stump can be susceptible to infection from the hormonal effects of the ovarian remnant.
Source: https://vcahospitals.com/know-your-pet/ovarian-remnant-syndrome-in-cats#:~:text=The%20most%20obvious%20clinical%20sign,delay%20of%20months%20to%20years.&text=Cats%20with%20functioning%20ovarian%20tissue,in%20the%20spring%20and%20summer.
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