Affichage des articles dont le libellé est D-dimer test. Afficher tous les articles
Affichage des articles dont le libellé est D-dimer test. Afficher tous les articles

samedi 17 juillet 2010

ENVA d'Alfort, Day 6, An education I don't want


Sam joins me


Today was harder. Baccarat seemed a little sadder, but maybe that is only because I might be. Perhaps she was the same. They always ask me how I find her each time I visit with her; some days (I can say that now; it has been a week that she has been hospitalized), she seems more perky; some days, she seems deflated, resigned, sad.

Or, that is I who feels that way.

It's the wait now that is hard. I can see that now. In the early part of the week, we were busy. We were busy with the first echocardiograms and sonograms, blood tests and x-rays. Then, I was busy calling pharmacies looking for Fraxiparine (a form of Heparin) and going to get it. Then, I was busy getting Rapide's blood drawn and taking it to the lab out here for the D-dimer test. And, finally, I was busy waiting for the results of all the tests, busy being with Baccarat when I could, or driving to and from the CHUVA at the Ecole Nationale Vétérinaire d'Alfort (l'ENVA d'Alfort).

Yesterday, we learned that there is certainly a tumor under the 5 cm blood clot clearly visible in the right atrium, or l'oreillette droite, of her heart.


At its size, it fills the chamber, and it protrudes through the tricuspid valve into the right ventricle, as well as nearly covering the valve of the vena cava, from which blood returns to the heart to be pumped to the lungs for oxygenation before being returned to the left heart to be pumped into the body. Watching the images on the echocardiogram machine, you can see that there is still blood flow, but it is severely restricted through the tricuspid valve, with some blood backing into the vena cava when the tumor shifts toward the valve. Baccarat is fatigued from a lack of oxygenation, and this is why she cannot walk very far at any time, and shouldn't. Calm and rest are the best thing for her, as well as staying cool, so that the demands on her heart are kept to a minimum. It looks like depression.

Now I think of all those days before she stopped eating, when I called to my husband or Sam to come see how cute she was, appearing to deal with the terrible heat with grace, when she was actually suffering from a tumor of the heart. It wasn't cute at all. It was the earliest signs of what could be a hemangiosarcoma, the least cute thing imaginable for a dog. Since there is no question that there is a tumor, the best we can hope for is a hemangioma, the non-malignant form. If it is an hemangiosarcoma, they will close without removing the tumor because it is an highly aggressive, high-grade soft tissue sarcoma that metastasizes very rapidly throughout the body, attacking the blood vessels. According to the Canine Cancer Awareness Organization:
Hemangiosarcoma is insidious, as it attempts to build it's own blood vessel network, making blood blister like formations which disrupts normal organ function. It is commonly in the advanced stage before detection, making it virtually a silent killer.

It's once you know your dog has a heart tumor that you know the signs that would have helped you help your dog much sooner had you known them, but you must forgive yourself because it is rare. It is especially rare in 4-year-old Labrador Retrievers, although their cousins the Golden Retrievers and German Shepherds are the two breeds most likely to develop this kind of cancer.

I asked before Sam and I left today if I had understood correctly that if the biopsy shows the tumor to be malignant that they simply close, leaving it in place. The young student, who is usually as quiet as Sam can be, spoke. He told me that it is the case because it metastasizes so rapidly and is not considered treatable. They can try chemotherapy, but in most cases, it will not save the dog.

"Et, ça, cette forme de cancer, elle s'appelle comment encore?" He answered me, but I couldn't retain the word. I was embarrassed. It happens when I don't actually want to be having to hear something. A friend who is a breast cancer specialist tells me this is typical; they know that as soon as they say "cancer", the patient can hear only 1 of 5 words. She modulates the way she speaks to help the patient hear and retain more. I had to ask again and force myself to pay attention to the reply, begging my brain to remember.

"Hémangiosarcome, si c'est malign. Hémangiosarcome. C'est rare."

I only remembered that it began with "h" and ended in "sarcome" by the time we were out on the street. It was alright. I had understood enough, I have a doctor at home to ask, and Google. I could find it again, now that I knew what to look for, and it turned out to be an education I wish I never needed.

According to the information on the Canine Cancer Awareness Organization's site, which cites current clinical studies at The Animal Cancer Center at Colorado State University and The University of Pennsylvania, Department of Clinical Studies, there are three types of hemangiosarcomas, dermal, hypodermal and visceral, with the type where tumors form in the heart or on the spleen being visceral, or the most lethal form of hemangiosarcoma. Again, from the CCAO site:
Visceral Hemangiosarcoma accounts for 2% of all reported malignancies and up to 5% of all noncutaneous tumors in dogs. Although these numbers seem small, they have a significant impact on dogs, since this form of cancer kills. The spleen and the right atrium of the heart are the most common sites of occurrence of visceral Hemangiosarcoma. Dogs may have nonspecific signs such as lethargy, loss of appetite, weight loss or more specific signs such as difficulty breathing, pallor, or abdominal fluid. Regardless of the site of origin, visceral Hemangiosarcoma is locally invasive and highly metastatic. Up to 25% of dogs with splenic Hemangiosarcoma have cardiac Hemangiosarcoma and up to 63% of dogs with atrial Hemangiosarcoma have metastatic disease. Metastases commonly affect the lower mesentery, lungs, and brain.

This was terrifying to read. Baccarat's tumor is in the right atrium, although the spleen, or la rate, is normal without any sign of metastases at present. She had all of the nonspecific signs of a hemangiosarcoma except the pallor. When she was first seen at our nearby clinic, the vet found her pale, but by Monday, the vets at the CHUVA did not, and they still do not, although they check her gums regularly. Her lungs also do not show signs of metastases. Her brain has not been scanned. She could, nonetheless, not yet have developed metastatic disease. I turned to my husband, who was stretched out on the sofa, his back in an analgesic position, watching the Tour de France.

"C'est difficile à penser que la tumeur ne soit pas maligne quand tu lis sur le hémangiosarcome," I said.

"Ca n'a pas l'aire bon," he replied. I nodded and looked back at the computer screen, scanning the words for something that said "bénign". There was nothing. I Googled benign heart tumors, and I found information on myocardial tumors on PetMD.com:
Myocardial tumors refer to tumors that specifically affect the heart. These types of tumors are rare, and when they do occur, they tend to occur in older dogs. Benign tumors are masses of tissue that do not metastasize, whereas malignant tumors metastasize throughout the body. Abnormal tissue growth arising from the blood vessels in the heart can be malignant, as with hemangiosarcomas — rare, rapidly reproducing tissue growths; or they may be benign, as is the case with hemangiomas — harmless growths consisting mainly of newly formed blood or lymph vessels.

"Il y a aussi des hémangiomes," I said to my husband. "C'est la forme bénign, et ce sont des masses faites des vaisseaux sanguins ou lymphatiques récemment formés, mais dans l'atrium, c'est peut-être plutôt un myxome à ce moment-là. Ca existe aussi, et les symptoms sont pareils."

"Même l'amaigrissement?"

"Oui, car il y a aussi un manque d'apétit." I returned to reading the first site. "En plus, il y a plusieurs signes qu'elle n'en a pas. Avec un hémangiosarcome, l'ascite à la même apparence que le sang, et la liquide dans son ventre c'est du sérum, plutôt taché du sang. En suite, c'est souvent accompagné par un coagulation dissimulée intravasculaire, ou CDI, ce qu'on vient d'apprendre qu'elle n'a pas avec le D-dimer. Aussi, son sang coagule normalement tandis que le sang dans le cas d'un hémangiosarcome ne coagule pas. Elle ne sagne pas visiblement non plus, comme du nez, par exemple. C'est peut-être bénign après tout, et elle est si jeune," I added, hopefully.

"Peut-être," he said, before drifting off to sleep, while I continued to read, trying to convince myself that her chances were as good that it was benign as that it was malignant from all the things she doesn't have, such as liquid in her abdomen that looks like blood, a blood disorder called disseminated intravascular coagulation (DIC), which did not show up from her D-dimer results, blood that does not coagulate (they found her coagulation rate normal last evening), and no visible bleeding, such as nosebleeds. And she is young for a malignant cancer, they say.

Before I left her with the two students, who were preparing to take blood again, the young woman told me again that they are doing everything they can to move up her surgery date from the 27th to next week. It all depends on being able to get the person who runs the cardiopulmonary bypass machine, which are "pumps are operated by allied health professionals known as perfusionists in association with surgeons who connect the pump to the patient's body." See Wikipedia, http://en.wikipedia.org/wiki/Cardiopulmonary_bypass. Here in France, a perfusionist is called a "pompiste", and there are few of them to begin with, but particularly few available in the vacation months of July and August, with the first availability being July 27th.

I suppose the only way they can move the date up is to beg someone to make him or herself available when they are already fully booked, which I hope the surgeon and the veterinary cardiologists can succeed at doing. It is especially hard when they cannot charge for their time. They are doing this for the glory of clinical science and from their humanity.

Baccarat needs them now, but she will wait patiently, if she must. But, she is getting depressed, as kind as and attentive as everyone treating her is, and as much as we go to spend visiting hours with her every day they have them. It's hard to be in the hospital, away from everything and everyone you know.

Hang in there Baccarat. Nous t'aimons si fort.

When we left, Sam was hungry. I was, too. If Baccarat didn't want her "very appetizing pâté", we wanted something.

"I think there are some brasseries that way," I said to Sam, pointing across the avenue Générale de Gaulle, towards the grocery store, where I had done my shopping the other evening. Sam looked off down the avenue.

"There's one there," he said. "But, there are probably nicer places in Paris." I thought about getting back on the bike and heading into the city for lunch, which would be nice, and then I thought about Audouin, waiting for us at home. "Wait, we're where? On the southeast side of Paris?" He shook his head. "There's not really anything there."

We crossed the avenue and passed an animal supply store and the post office, turning in to where the grocery store is.

"There's the Casino."

"Do you want sandwiches or something there?" I asked, not trying to sound enthusiastic and glancing around for signs of the village center and a place to sit down for lunch.

"Not really."

I turned left onto a road that branches off the traffic circle at the entry to Maisons-Alfort, and we walked along, past a fruit and vegetable stall, a boulangerie all in pink, with tables on the sidewalk, and on under the train overpass, past some sort of restaurant, Japanese I think, closing for renovations, and on a bit farther, scanning the storefronts and awnings, the street signs, looking for signs of something promising.

"Mom," said Sam, interrupting my search. "Where are we going?"

"I don't know, Sam. We're looking for where the shops and cafés are. There must be some." I looked across the street, and there was a wine bar ahead, and some tables set up on the sidewalk, the storefronts set back from the sidewalk. "Like that, there's something there. What is it?"

We saw the word "bagels" at the same time, and Sam grinned.

"We'll go there?"

He was already crossing the street, toward bagel, ham and cream cheese sandwiches, Vitamin Water, milk shakes and cousins of Frappucinos.

"Who'd have thought a place like this would be here, in Alfortville?" he mused, reading the chalkboard menu on the wall.

"See, Sam," I said, "sometimes you don't know where you are going, and then you find what you would have been looking for, I mean, if you knew it were there."

"What's pastrami?" he asked. I realized we'd been away from New York for a long time and explained. He listened and decided on the ham and cream cheese.

We sat, alone, up in the mezzanine at the rear of the shop, Sam still feeling chilled from the ride in, and probably the emotion, the unseasonable temperatures in the 70s, a breeze, and maybe from being hungry.

"I haven't had cream cheese since we went to London," he said, chewing his sandwich.

London. That was a little more than 2 years ago. I nodded, trying to remember where he'd had cream cheese, but he interrupted my effort to remember, saying, "Maybe I'll go to New York after my license, Mom. I can eat food like this, get to know the art world there, and work on my photography full-time, get a job at Element. If it doesn't work out, I'll do my law degree."

"Don't you eat that stuff when you go to that American restaurant -- what's it called? And aren't there bagel and cream cheese places all over near your old school?" Of course there are, but they aren't on every street corner, everywhere you look, whenever you happen to want one. "And, you know, they have bagels in the Marais, the authentic Jewish bagels."

"Yeah, but they're braided and have poppy seeds." His attention was back from NYC.

"They probably have plain ones, too. Or at least just with sesame seeds."

Bagels.

He's still a New Yorker somewhere in his soul, and bagels are always in NYC, where they are everywhere, anytime you want one, with whatever you want on it, where they were when he was a child. Anywhere else, well, they're a reminder, a symbol for what they are: part of an unretrievable past. And when we understand that the past is unretrievable, we may chose to understand that the only thing left it to greet the future and live today.


....

jeudi 15 juillet 2010

Any port


Wisp, in Rapide's neck


This is where she normally seeks comfort, only in Baccarat's neck. Any port, as they say, in a storm. Her dog has disappeared, and Rapide is wondering when it will be her turn to suddenly leave and not come home again. She is as nervous and jumpy as a cat on a hot tin roof. All I have to do is touch her when she can't see my hand coming, and she tenses and leaps into the air. I have to remember to announce my intention to reach out, from where she can see my hand, and then touch her.

What a lot of anxiety and loneliness one dog's illness and being hospitalized can create.

This morning, my husband tried to draw the vial of Rapide's blood necessary to serve as a control for Baccarat's D-dimer results. We are in the "jamais vu" in veterinary medicine. A D-dimer blood test is used to rule out a pulmonary embolism, deep venous thrombosis or disseminated intravascular coagulation (DIC), or, in other words, the presence of other blood clots (thrombi) in the vascular system. Basically, they are looking to see how much D-dimer is in the bloodstream.

This is not a veterinary blood test, as the incidence is non-existent in dogs, being more common in cats, but possibly still statistically small, and so the test has had to be done in a lab for human blood testing. Happily, the lab with which my husband works the most does test animal blood for our local veterinary clinic, and they agreed to perform the D-dimer, charging us for one test, instead of the two needed. However, the results indicate normal and elevated levels for human beings, and we cannot be certain of normal in canines.

This rather amazed my husband, but you also have to consider that the D-dimer test was first described, according to Wikipedia, in the 1970s and its clinical application discovered only in the 1990s. That it hasn't been established for non-existent cases in veterinary medicine is not, then, wondrous. Rapide and Baccarat would offer some information to veterinary cardiovascular science should Baccarat's levels differ significantly from Rapide's, and their comparison to human D-dimer levels would be interesting.

D-dimer is a fibrin degradation product, or a small protein, that is present in the blood after a blood clot is degraded by fibrinolysis. If there is a lot of D-dimer, chances are good that the body has been busy degrading blood clots, meaning that there is the possibility of a thrombosis, or an illness tending to produce blood clots. If Baccarat's blood sample indicates a higher than supposed normal level of D-dimer, we can suppose that there is another clot, or more, elsewhere in her body, that she has suffered a pulmonary embolism, or that she is suffering from DIC. It is nearly certain that if she is, it is not a severe case yet because there is not the bleeding that accompanies severe DIC. If it is mild DIC, the possible causes are several, with only some being likely or possible in Baccarat's case:

A cancer has been ruled out, at present, and Baccarat has been spayed, so obstetric causes are not in consideration; nor has there been any trauma. There are no indications of infection, either, and the hepatic results show a normal liver. There are no lesions to indicate vasculitis, which is common in dogs and horses, and Serotonin syndrome can be ruled out, as well, because it is an adverse drug reaction, and Baccarat has not been on any medications. An aortic aneurysm has not been mentioned, since there does not appear to be anything abnormal with the thoracic aorta, and I believe they have looked at the abdominal aorta in the abdominal sonograms performed. As far as snake bite is concerned, we cannot be certain that there was no poisonous snake bite, but she has demonstrated no pain, we have seen no swelling or oozing blood-like liquid from a snake bite site, and there have been no neurological indications.

This tends toward what the veterinary cardiologist has been suspecting, should the D-dimer level indicate DIC, which is that Baccarat possibly suffered heat stroke.

We are obviously hoping that the D-dimer level matches Rapide's and tends to correspond to normal levels in humans.

Last evening, after the finish of the 10th stage of the Tour de France, which we watched collapsed on our respective sofas, the healthy animals draped over furniture, cushions and each other in similar repose, we took Rapide for our old walk, down on the path along the edge of the fields where they end at the bank of the Seine. We went as far as the little stone-covered beach under the willows and other trees I cannot identify, or haven't bothered to, and Rapide waded in the cool water, while my husband sat up on a bench and rested his back. It has been hurting again. I watched Rapide, and I remembered all the walks we took there, moments spent watching them play in the shimmering river, back before Baccarat tried to bring back one too many stinky, foul dead things she'd scarcely fail to find, or, worse, to roll in, like her mother.

I thought about how precious moments are, and how even if we know it at the time just how precious they are, one day they will be unrecoverable, memories only, and they will sear the throat and heart, and the greater the joy and beauty, the greater the pain.

I thought about taking Baccarat and Rapide to walk along the Seine from the vet's, past Sam's lycée, and on a little farther toward the bridge to Limay Monday morning, and how I could see the Ile aux Dames, where the tennis club where Sam used to play is, and how I used to bring the dogs to walk in the park and wait for Sam's lesson to be finished. I had wanted to get there, to sit with them in that park again, but Baccarat could go no farther than halfway up the stair to the bridge, and then she found a damp spot in the shade and let her front legs slide until her belly touched the stone and she did not get up until I had to try to get her back to the vet for care.

We sat there and I looked at where the club would be, on the other side of the bridge, and I thought about how those moments are unretrievable, part of another part of my life as a mother, and how Sam has joined me as an adult, ready to care for our dog with all the love he has learned he has for her. I wanted to run to that parking lot and sit there again in my car, see him walk up the gravel path between the courts, his racket over his shoulder, his curling hair long over his brow and down his neck, a can of coke in his hand, won because he beat everyone, ready to tell me again how they are lousy, anyway, but he started too late to be one of the chosen players. I looked at Baccarat, and I thought about how that Sam is gone, just like she might soon be gone, a memory, photos, the stories we can tell, and I felt almost desperate against the nostalgia you have to fight.

Go on, only on. Love and let the future take care of the past and the pain.

Rapide came to my side and looked at me. It was time to join my husband up on the bench. I told him, my voice so tight the words could barely come out. I looked at the opposite bank, the water flowing by. He touched a tear that hung from my lower lashes and threatened to betray me by being followed by another, running down my cheek.

"Je pense," I told him, "que ce n'est pas pareil pour toi qui passes ta vie à l'hôpital, où les jours sont les mêmes sur toutes ces années qui filent, mais nous, les mères qui peuvent, qui sont avec leurs enfants, même si on travaille, qui les amènent à leurs activités, qui s'en occupent tous les jours, on vie ces périodes, ces phases, on doit les laisser passer pour vivre la prochaine et un jour la voir passer aussi. On a tant de petits deuils à faire, et on doit se battre contre la nostaglie tout le temps ou couler."

He considered a moment. I glanced at him and saw him looking out over the Seine, as well. Once, my husband told me that he couldn't imagine not living by water. Twice this week, I had sat and watched the river flow by along with my memories and thoughts.

"Tu as peut-être raison," he finally said, "mais je vie des moments de nostalgie aussi, seulement, je les repousse."

"Moi non plus, je ne me laisse pas rester dans la nostalgie. Je serais trop malheureuse pour rien faire. Ce n'est juste que la coincidence entre ce moment quand on risque de perdre Baccarat et je vois Sam devient un adult, son enfance dans le passé, c'est trop fort, mais je n'y reste pas." He put his arm around my waist, and we headed back to the path along the Seine and home, to our bottom gate.

The coincidence, the terrible synchronicity in perhaps losing Baccarat at the very moment that Sam's childhood ends, is too much, but I won't let myself get lost in that. Baccarat needs me to do what I can for her, and Sam will need me in different ways, with new things to live. Ends are never so neat as that, thank heavens. They just seem that way when we are fragile.

It's time to leave for Maisons-Alfort. I'll take my motorcycle today, since Baccarat won't be coming home yet.
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