persistent (redirected from persistent ductus venosus)

persistent

relative to embryological defects refers to persistence of an entity into external life in such a way as to cause some reduction of efficiency. The common defects are listed under the names of the compromised organs. See also persistent right aortic arch, ductus arteriosus, penile preputial frenulum, imperforate hymen, persistent urachus, persistent hyperplastic vitreous, persistent pupillary membrane.

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persistent corpus luteum

see corpus luteum.

persistent ductus arteriosus

see patent ductus arteriosus.

persistent ductus venosus

see ductus venosus.

persistent omphalomesenteric duct

see omphalomesenteric duct.

persistent posterior perilenticular vascular tunic

the tunic is generated in the embryo but atrophies just before birth. Persistence of some part of the tunic into adult life is common but of no clinical significance.

persistent recumbency

the animal is normal in other respects but does not rise to its hooves for a period exceeding 24 hours.

persistent right aorta arch

see persistent right aortic arch.

persistent truncus arteriosus

may cause neonatal congestive heart failure and cyanosis; the interventricular septum is usually patent. See also truncus arteriosus.

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Patient discussion about persistent.

Q. Can lung cancer be diagnosed on behalf of persistent cough? My father is a heavy smoker. He smoked for all his adult life and he never stopped. In the last few weeks he started to have persistent cough attacks. Can those attacks be the first sign of lung cancer?

A. Chronic cough can be the first symptom of lung cancer. It will usually be cough accompanied with bloody sputum. In addition, lung cancer will probably cause a wight loss. If your father has those characteristics you should go to your GP.

Q. Headache that won’t go away. Help! Hi, I’m 47 years old man, working as accountant. Yesterday afternoon, I came back home, and after some time I started to feel headache that still going. Is it dangerous? Is it possible I have something like bleeding? I wasn’t hit or injured in anyway in my head before this headache appeared

A. There are two types of headaches: primary headaches and secondary headaches. Primary headaches are not associated with (caused by) other diseases. Examples of primary headaches are migraine headaches, tension headaches, and cluster headaches. Secondary headaches are caused by associated disease. The associated disease may be minor or serious and life threatening. Tension headaches are the most common type of primary headache. Tension headaches are more common among women than men. Migraine headaches are the second most common type of primary headache. Secondary headaches have diverse causes, ranging from serious and life threatening conditions such as brain tumors, strokes, meningitis, and subarachnoid hemorrhages to less serious but common conditions such as withdrawal from caffeine and discontinuation of analgesics. http://www.medicinenet.com/headache/article.htm In any case if your headache continues you should see your doctor immediately. Hope this helps.

Q. My 16 years daughter cough all the time for more than a year. what can make one cough for so long? My 16 years daughter cough all the time for more than a year. She was sick a year ago and was treated with antibiotics. Since than she has a persistent cough that is resolved when she is asleep. What can make one cough for so long?

A. Chronic cough is a very common symptom that effect adolescences. The fact that the cough began after a common cold, and that it is resolves at night time are highly suggestive for psychological cough. You still need to go for a GP to confirm this diagnosis, but its probably just a habit your daughter have by now and its nothing serious.