pulmonary artery


September 13th, 2015
This is the cardio pulmonary vein system.
It turned out super well. Like damn. It will be so worth the tiny scraps of paper I will find all over my room for the next 2 months.

Bovine Pulmonary Artery

The pulmonary artery emerges above the right chamber of the heart, separating into two branches that enter the right and left lungs. In the lungs, the arteries further subdivide into smaller and smaller branches until they reach the capillaries in the pulmonary air sacs (alveoli). In the capillaries, blood takes up oxygen from the air breathed into the air sacs and releases carbon dioxide. It then flows into larger and larger vessels until it reaches the pulmonary veins. These veins open into the left atrium of the heart, which then pumps the freshly oxygenated blood to the rest of the body.


Pulmonary emboli usually arise from thrombi that originate in the deep venous system of the lower extremities; however, they rarely also originate in the pelvic, renal, upper extremity veins, or the right heart chambers. After traveling to the lung, large thrombi can lodge at the bifurcation of the main pulmonary artery or the lobar branches and cause hemodynamic compromise.

Pulmonary thromboembolism is not a disease in and of itself. Rather, it is a complication of underlying venous thrombosis. Under normal conditions, microthrombi (tiny aggregates of red cells, platelets, and fibrin) are formed and lysed continually within the venous circulatory system.

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  0337am.  I rubbed my bleary eyes on my sleeve and looked at the monitor.  Night shift.  I don’t do night shifts.  But overtime is scarce and I want to pay off a few vacations. 

“Balloon up…” the PA said quietly, breaking into my blank stare. I quickly added the 1.5ml of air that was required to float a pulmonary artery catheter.

I watched the waveforms. 

“Uhh… I don’t see a change- looks RA to me…” I said.  He sighed. We repeated the drill 4 times and every time it coiled somehow.

I stood at the edge of the bed, reflexively doing what the PA needed me to.  I checked on the patient, squeezed his hand, murmured encouragement.  I changed screens on the monitor, flushed lines, made sure the time-out was in.  My hands moved quickly, instinctively.  

Maybe it was that it was 3 in the morning, but I suddenly felt like I stepped back from myself and was watching.  I saw myself doing things without thinking.  I surveyed the room littered with trash and mayhem.  I took in the toes sticking out from under the blue sterile drape and the hand that gripped the side rail.  I could see the drape moving with each rapid breath he took.  I could see the blood splattered across the gauze and the PA’s gloves.  I heard the monitor screaming its alerts. I watched myself go through the steps I had gone through a thousand times before.  Years of training at work.

 I looked at the darkened window and saw the reflection.  The tall PA hunched over, working his hardest to put in a line, the blue lump that was the patient below him.  And me.  Standing beside him, doing everything I could to help. 

I stared at the image and thoughts floated through my mind.

How many?   How many more patients would I endure this with?  How many more times would I be standing in a room, holding a patients hand with one hand and helping with another?  How much longer could I do this and survive? How many more lives would I save while losing a bit more of my own?

In three short months I will have been an ICU RN for 7 years. 5 in the same unit I am in now.   My mind wandered as I cleaned up the debris and wiped the blood off the side rail.

Would I miss it?  If I walked away tomorrow… would I miss it? A friend that I work with once said that ICU nursing was my calling.  That I was born to do what I do. 

And, that thought… Scares me more than anything.


Pulmonary embolism is a blockage in one of the pulmonary arteries in your lungs. In most cases, pulmonary embolism is caused by blood clots that travel to the lungs from the legs or, rarely, other parts of the body (deep vein thrombosis).


Transposition of the great arteries is a congenital heart defect in which the pulmonary artery and aorta are in reverse positions. The pulmonary artery, which should normally arise from the right ventricle, arises from the left while the aorta, which should normally arise from the left ventricle, arises from the right. This results in parallel circulation. Blood flows from the aorta to the body to the right ventricle back to the aorta, and from the left ventricle to the pulmonary artery to the lungs back to the left ventricle. Oxygenated blood and deoxygenated blood never mix, and deoxygenated blood is continuously sent out the body. 

How is the baby alive, then??

The patent ductus arterious! The PDA is a connection between the aorta and pulmonary artery that is normally present in all babies, but closes shortly after birth. A medication called prostaglandin can be administered to keep this duct open. The blood is then able to mix, allowing for some oxygen to reach the cells of the body. In most babies, though, this shunt is not enough. An ASD (atrial septal defect, or hole between the atria) is usually created via atrial septostomy either at the bedside or in the cath lab to allow for greater mixing. Since the blood is mixed, babies will have decreased sats.

Ultimately, an arterial switch operation will need to be performed to allow for proper circulation.


modern grisha orders  corporalki + heartrenders




anatomy. a hollow, pump-like organ of blood circulation, composed mainly of rhythmically contractile smooth muscle, located in the chest between the lungs and slightly to the left and consisting of four chambers: a right atrium that receives blood returning from the body via the superior and inferior vena cavae, a right ventricle that pumps the blood through the pulmonary artery to the lungs for oxygenation, a left atrium that receives the oxygenated blood via the pulmonary veins and passes it through the mitral valve, and a left ventricle that pumps the oxygenated blood, via the aorta, throughout the body.




verb (used with object), rent, rending

to separate into parts with force or violence.

Double Outlet Right Ventricle

Double Outlet Right Ventricle (DORV) is a congenital cardiac anomaly in which both the pulmonary artery and aorta arise from the right ventricle. In a normal heart, only the pulmonary artery connects here while the aorta connects to the left ventricle.

DORV is typically associated with a ventricular septal defect (VSD, or a hole between the ventricles). Transposition of the Great Arteries (TGA, or when the pulmonary artery and aorta are in reverse locations), pulmonary stenosis/atresia (abnormalities with the pulmonary valve that prevent or decrease the flow of blood into the pulmonary artery), and corarctation of the aorta (a narrowing of the aorta) can also frequently occur with this defect.

The VSD allows oxygenated and de-oxygenated blood to mix. This mixed blood is what is carried out to the body. Because of this, you can expect a patient with this condition to have decreased oxygen saturations (usually in the mid-70s to 80s). 

Surgical repair is necessary, but the exact procedure can vary greatly between patients. The approach will depend on the location of the VSD, location of the great arteries, and how developed the ventricles are. Some patients will be able to have a two ventricle repair, while others will require a single ventricle repair.

The respiratory system within the lungs — illustrated here by a model made from a resin cast — consists of a closely interlinked system of air passages, arteries and veins. Deoxygenated blood, shown in blue, is pumped from the heart through a treelike arrangement of pulmonary arteries and arterioles until it flows through capillaries in and around the alveoli, which are the terminations of the bronchial “tree”, shown in white.
Oxygen is absorbed and carbon dioxide is released before the blood, now oxygenated and shown in red, returns through a similar arrangement of pulmonary veins to the heart. The model is seen from the front so the left side of the chest appears on the right. The heart lies in the left side of the chest and, to accommodate it, the two-lobed left lung is smaller than the three-lobed right lung.

© Science Source/Science Photo Library

Zodiac ruling body parts
  • <p> <b></b> ♈Aries♈ Rules the head, brain, skull, face, lower jaw, eyes, and ears<p/><b></b> ♉Taurus♉ Rules the throat, neck, trachea, vocal chords, and thyroid gland<p/><b></b> ♊Gemini♊ Rules the hands, fingers, shoulders, arms, collarbones, nerve fibers, and respiratory system<p/><b></b> ♋Cancer♋ Rules the chest, breasts, digestive system, elbows, blood serum, and liver<p/><b></b> ♌Leo♌ Rules the back, spinal chord, pulmonary artery, liver metabolism, anterior and superior Vena cava<p/><b></b> ♍Virgo♍ Rules the abdomen, ribs, portal veins, hands, carpal bones, and the respiratory system.<p/><b></b> ♎Libra♎ Rules the lower back, kidneys, the skin, and vasomoter system<p/><b></b> ♏Scorpio♏ Rules the reprodutove organs, genitals, ovaries, lower stomach, nasal bones, and thyroid glands<p/><b></b> ♐Sagittarius♐ Rules the hips, upper thighs, iliac arteries, pelvic bone, and motor nerves<p/><b></b> ♑Capricorn♑ Rules the knees, joints, teeth, hair, peripheral nervous system, and the abdomen<p/><b></b> ♒Aquarius♒ Rules the ankles, calf's, tibia, the veins, respiratory system, and skin<p/><b></b> ♓Pisces♓ Rules the feet, lymphatic system, nasal bones, and the synovical glands<p/></p>

Pictured here during spring training 1956, Minnie Miñoso played in big league games across five decades (even though his appearances in 1976 and ‘80, at ages 50 and 54, were little more than publicity stunts), was a nine-time All-Star, and all his life was a smiling, laughing kid at heart. The Afro-Cuban outfielder died on Sunday of a tear in his pulmonary artery at the age of 89. (Hy Peskin/SI)

anonymous asked:

Prompt: Gail & Holly before 4x12 Gail takes 2 viagra by accident. She's so ashamed by her mistake she won't go to the hospital. She stays at Hollys to keep an eye on her. she's gets so uncontrollably horny, she can't resist holly anymore ;)

A/N: I did some research on this to understand how Viagra (Ikeep spelling this ‘viagara’, like Niagara) works.  Learned some interesting things, mostimportantly, or most relevantly, is that Viagra causes smooth muscle relaxationand vasodilation, which allows for men to sustain an erection.  The effects of women taking the drug are unclear, but fuck the research, I’m writing this prompt as is.  

The drug has also found use in treating diabetes, pulmonary arterial hypertension, and altitude sickness. But the most important thing I learned is this: Israeli and Australian researchers discovered that 1 mg of the drug dissolved in a vase of water can extend the shelf life of cut flowers, making them stand up straight for up to a week beyond their natural lifespan. The drug also slows down plant ripening; tests were done strawberries, legumes, roses, carnations, broccoli, and other perishables.  

Lesson learned: Viagra gives flowers week long erections.  Now on to the story.  

Viagra (Part 1) (Part 2)

The sound of her phone vibrating against her coffee table alerted Holly to an incoming message.

Officer Awesome: Hypothetical question: what happens when a woman takes Viagra?

She looked at the text, surprised, but somehow not really.  This seemed to be the way with Gail Peck.  

Keep reading


Pulmonary atresia is a congenital heart defect affecting pulmonary circulation. The pulmonary valve does not form correctly, preventing the flow of blood into the lungs. Because of this lack of blood flow, the right ventricle and tricuspid valve do not grow appropriately and are hypoplastic.

But if the blood doesn’t flow to the lungs, how is the baby alive? How are they oxygenating? Pulmonary atresia is a ductal-dependent defect, meaning that blood flow is dependent on the PDA (patent ductus arteriosis). The PDA is a connection between the aorta and pulmonary artery that is normally present in all babies, but closes shortly after birth. A medication called prostaglandin can be administered to keep this duct open. Blood then flows from the left ventricle into the aorta, through the PDA, to the pulmonary artery and then to the lungs. Because oxygenated and deoxygenated blood are now mixed together, the patient will have decreased sats. Surgery will be needed to ultimately correct this defect.