Normally, fistula is defined as an abnormal communication between two epithelized surface.But enterocutaneous fistula is an abnormal communication between the skin with various parts of the gut. The ileum is the most common site of origin of enterocutaneous fistula.
Intestinal fistulas pose the greatest challenge to the General Surgeon. The presentation provides abrief guideline for management of this complex problem.
Normally, fistula is defined as an abnormal communication between two epithelized surface.But enterocutaneous fistula is an abnormal communication between the skin with various parts of the gut. The ileum is the most common site of origin of enterocutaneous fistula.
Intestinal fistulas pose the greatest challenge to the General Surgeon. The presentation provides abrief guideline for management of this complex problem.
HEMORRHOIDECTOMY- OPERATIVE SURGERY
#surgicaleducator #operativesurgery #hemorrhoidectomy #usmle #babysurgeon #surgicaltutor
Subscription Link: http://youtube.com/c/surgicaleducator...
Surgical Educator Android App link: https://play.google.com/store/apps/de...
Dear viewers,
• Greetings from “Surgical Educator”
• Because of the popular demand by viewers of the YouTube channel “Surgical Educator”, I have decided to create and upload videos on common surgeries.
• In this video today, I have discussed Hemorrhoidectomy- Barron’s banding, open and closed hemorrhoidectomy, Stapler hemorrhoidectomy and THD- Transanal Hemorroidal Dearterialisation. So, it is a 4in1 video.
• However, these videos are not real surgeries but the theoretical aspect of operative surgery like going through an atlas of operative surgery.
• Along with these videos, I recommend you watch real operative surgery videos as well and I will give a link for each surgery in the end of the video as end-cards, which I think will be very useful.
• This will give a very good opportunity for the surgical trainees to mentally rehearse various surgical steps in a sequential manner prior to actual surgery. You can watch the video in the following links:
• surgicaleducator.blogspot.com
• youtube.com/c/surgicaleducator
• Thank you for watching the videos.
Splenic trauma - Causes, Complications, ManagementVikas V
Splenic Trauma - A detailed Presentation about Splenic Trauma, anatomy of the spleen, Causes of Trauma, Mechanism of Injury, Diagnosis, Management, Surgical management, Steps of Splenectomy, and Complications
OPEN RIGHT HEMICOLECTOMY- STEP BY STEP OPERATIVE SURGERY
#surgicaleducator #operativesurgery #openrighthemicolectomy #usmle #babysurgeon #surgicaltutor
Subscription Link: http://youtube.com/c/surgicaleducator...
Surgical Educator Android App link: https://play.google.com/store/apps/de...
Dear viewers,
• Greetings from “Surgical Educator”
• Because of the popular demand by viewers of the YouTube channel “Surgical Educator”, I have decided to create and upload videos on common surgeries.
• In this video today, I have discussed Open Right Hemicolectomy .
• However, these videos are not real surgeries but the theoretical aspect of operative surgery like going through an atlas of operative surgery.
• Along with these videos, I recommend you to watch real operative surgery videos as well and I will give a link for each surgery in the end of the video as end-cards, which I think will be very useful.
• This will give a very good opportunity for the surgical trainees to mentally rehearse various surgical steps in a sequential manner prior to actual surgery. You can watch all my teaching videos in the following link:
• youtube.com/c/surgicaleducator
• Thank you for watching the videos.
HEMORRHOIDECTOMY- OPERATIVE SURGERY
#surgicaleducator #operativesurgery #hemorrhoidectomy #usmle #babysurgeon #surgicaltutor
Subscription Link: http://youtube.com/c/surgicaleducator...
Surgical Educator Android App link: https://play.google.com/store/apps/de...
Dear viewers,
• Greetings from “Surgical Educator”
• Because of the popular demand by viewers of the YouTube channel “Surgical Educator”, I have decided to create and upload videos on common surgeries.
• In this video today, I have discussed Hemorrhoidectomy- Barron’s banding, open and closed hemorrhoidectomy, Stapler hemorrhoidectomy and THD- Transanal Hemorroidal Dearterialisation. So, it is a 4in1 video.
• However, these videos are not real surgeries but the theoretical aspect of operative surgery like going through an atlas of operative surgery.
• Along with these videos, I recommend you watch real operative surgery videos as well and I will give a link for each surgery in the end of the video as end-cards, which I think will be very useful.
• This will give a very good opportunity for the surgical trainees to mentally rehearse various surgical steps in a sequential manner prior to actual surgery. You can watch the video in the following links:
• surgicaleducator.blogspot.com
• youtube.com/c/surgicaleducator
• Thank you for watching the videos.
Splenic trauma - Causes, Complications, ManagementVikas V
Splenic Trauma - A detailed Presentation about Splenic Trauma, anatomy of the spleen, Causes of Trauma, Mechanism of Injury, Diagnosis, Management, Surgical management, Steps of Splenectomy, and Complications
OPEN RIGHT HEMICOLECTOMY- STEP BY STEP OPERATIVE SURGERY
#surgicaleducator #operativesurgery #openrighthemicolectomy #usmle #babysurgeon #surgicaltutor
Subscription Link: http://youtube.com/c/surgicaleducator...
Surgical Educator Android App link: https://play.google.com/store/apps/de...
Dear viewers,
• Greetings from “Surgical Educator”
• Because of the popular demand by viewers of the YouTube channel “Surgical Educator”, I have decided to create and upload videos on common surgeries.
• In this video today, I have discussed Open Right Hemicolectomy .
• However, these videos are not real surgeries but the theoretical aspect of operative surgery like going through an atlas of operative surgery.
• Along with these videos, I recommend you to watch real operative surgery videos as well and I will give a link for each surgery in the end of the video as end-cards, which I think will be very useful.
• This will give a very good opportunity for the surgical trainees to mentally rehearse various surgical steps in a sequential manner prior to actual surgery. You can watch all my teaching videos in the following link:
• youtube.com/c/surgicaleducator
• Thank you for watching the videos.
NVBDCP.pptx Nation vector borne disease control programSapna Thakur
NVBDCP was launched in 2003-2004 . Vector-Borne Disease: Disease that results from an infection transmitted to humans and other animals by blood-feeding arthropods, such as mosquitoes, ticks, and fleas. Examples of vector-borne diseases include Dengue fever, West Nile Virus, Lyme disease, and malaria.
ARTIFICIAL INTELLIGENCE IN HEALTHCARE.pdfAnujkumaranit
Artificial intelligence (AI) refers to the simulation of human intelligence processes by machines, especially computer systems. It encompasses tasks such as learning, reasoning, problem-solving, perception, and language understanding. AI technologies are revolutionizing various fields, from healthcare to finance, by enabling machines to perform tasks that typically require human intelligence.
263778731218 Abortion Clinic /Pills In Harare ,sisternakatoto
263778731218 Abortion Clinic /Pills In Harare ,ABORTION WOMEN’S CLINIC +27730423979 IN women clinic we believe that every woman should be able to make choices in her pregnancy. Our job is to provide compassionate care, safety,affordable and confidential services. That’s why we have won the trust from all generations of women all over the world. we use non surgical method(Abortion pills) to terminate…Dr.LISA +27730423979women Clinic is committed to providing the highest quality of obstetrical and gynecological care to women of all ages. Our dedicated staff aim to treat each patient and her health concerns with compassion and respect.Our dedicated group ABORTION WOMEN’S CLINIC +27730423979 IN women clinic we believe that every woman should be able to make choices in her pregnancy. Our job is to provide compassionate care, safety,affordable and confidential services. That’s why we have won the trust from all generations of women all over the world. we use non surgical method(Abortion pills) to terminate…Dr.LISA +27730423979women Clinic is committed to providing the highest quality of obstetrical and gynecological care to women of all ages. Our dedicated staff aim to treat each patient and her health concerns with compassion and respect.Our dedicated group of receptionists, nurses, and physicians have worked together as a teamof receptionists, nurses, and physicians have worked together as a team wwww.lisywomensclinic.co.za/
Title: Sense of Smell
Presenter: Dr. Faiza, Assistant Professor of Physiology
Qualifications:
MBBS (Best Graduate, AIMC Lahore)
FCPS Physiology
ICMT, CHPE, DHPE (STMU)
MPH (GC University, Faisalabad)
MBA (Virtual University of Pakistan)
Learning Objectives:
Describe the primary categories of smells and the concept of odor blindness.
Explain the structure and location of the olfactory membrane and mucosa, including the types and roles of cells involved in olfaction.
Describe the pathway and mechanisms of olfactory signal transmission from the olfactory receptors to the brain.
Illustrate the biochemical cascade triggered by odorant binding to olfactory receptors, including the role of G-proteins and second messengers in generating an action potential.
Identify different types of olfactory disorders such as anosmia, hyposmia, hyperosmia, and dysosmia, including their potential causes.
Key Topics:
Olfactory Genes:
3% of the human genome accounts for olfactory genes.
400 genes for odorant receptors.
Olfactory Membrane:
Located in the superior part of the nasal cavity.
Medially: Folds downward along the superior septum.
Laterally: Folds over the superior turbinate and upper surface of the middle turbinate.
Total surface area: 5-10 square centimeters.
Olfactory Mucosa:
Olfactory Cells: Bipolar nerve cells derived from the CNS (100 million), with 4-25 olfactory cilia per cell.
Sustentacular Cells: Produce mucus and maintain ionic and molecular environment.
Basal Cells: Replace worn-out olfactory cells with an average lifespan of 1-2 months.
Bowman’s Gland: Secretes mucus.
Stimulation of Olfactory Cells:
Odorant dissolves in mucus and attaches to receptors on olfactory cilia.
Involves a cascade effect through G-proteins and second messengers, leading to depolarization and action potential generation in the olfactory nerve.
Quality of a Good Odorant:
Small (3-20 Carbon atoms), volatile, water-soluble, and lipid-soluble.
Facilitated by odorant-binding proteins in mucus.
Membrane Potential and Action Potential:
Resting membrane potential: -55mV.
Action potential frequency in the olfactory nerve increases with odorant strength.
Adaptation Towards the Sense of Smell:
Rapid adaptation within the first second, with further slow adaptation.
Psychological adaptation greater than receptor adaptation, involving feedback inhibition from the central nervous system.
Primary Sensations of Smell:
Camphoraceous, Musky, Floral, Pepperminty, Ethereal, Pungent, Putrid.
Odor Detection Threshold:
Examples: Hydrogen sulfide (0.0005 ppm), Methyl-mercaptan (0.002 ppm).
Some toxic substances are odorless at lethal concentrations.
Characteristics of Smell:
Odor blindness for single substances due to lack of appropriate receptor protein.
Behavioral and emotional influences of smell.
Transmission of Olfactory Signals:
From olfactory cells to glomeruli in the olfactory bulb, involving lateral inhibition.
Primitive, less old, and new olfactory systems with different path
Tom Selleck Health: A Comprehensive Look at the Iconic Actor’s Wellness Journeygreendigital
Tom Selleck, an enduring figure in Hollywood. has captivated audiences for decades with his rugged charm, iconic moustache. and memorable roles in television and film. From his breakout role as Thomas Magnum in Magnum P.I. to his current portrayal of Frank Reagan in Blue Bloods. Selleck's career has spanned over 50 years. But beyond his professional achievements. fans have often been curious about Tom Selleck Health. especially as he has aged in the public eye.
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Introduction
Many have been interested in Tom Selleck health. not only because of his enduring presence on screen but also because of the challenges. and lifestyle choices he has faced and made over the years. This article delves into the various aspects of Tom Selleck health. exploring his fitness regimen, diet, mental health. and the challenges he has encountered as he ages. We'll look at how he maintains his well-being. the health issues he has faced, and his approach to ageing .
Early Life and Career
Childhood and Athletic Beginnings
Tom Selleck was born on January 29, 1945, in Detroit, Michigan, and grew up in Sherman Oaks, California. From an early age, he was involved in sports, particularly basketball. which played a significant role in his physical development. His athletic pursuits continued into college. where he attended the University of Southern California (USC) on a basketball scholarship. This early involvement in sports laid a strong foundation for his physical health and disciplined lifestyle.
Transition to Acting
Selleck's transition from an athlete to an actor came with its physical demands. His first significant role in "Magnum P.I." required him to perform various stunts and maintain a fit appearance. This role, which he played from 1980 to 1988. necessitated a rigorous fitness routine to meet the show's demands. setting the stage for his long-term commitment to health and wellness.
Fitness Regimen
Workout Routine
Tom Selleck health and fitness regimen has evolved. adapting to his changing roles and age. During his "Magnum, P.I." days. Selleck's workouts were intense and focused on building and maintaining muscle mass. His routine included weightlifting, cardiovascular exercises. and specific training for the stunts he performed on the show.
Selleck adjusted his fitness routine as he aged to suit his body's needs. Today, his workouts focus on maintaining flexibility, strength, and cardiovascular health. He incorporates low-impact exercises such as swimming, walking, and light weightlifting. This balanced approach helps him stay fit without putting undue strain on his joints and muscles.
Importance of Flexibility and Mobility
In recent years, Selleck has emphasized the importance of flexibility and mobility in his fitness regimen. Understanding the natural decline in muscle mass and joint flexibility with age. he includes stretching and yoga in his routine. These practices help prevent injuries, improve posture, and maintain mobilit
These simplified slides by Dr. Sidra Arshad present an overview of the non-respiratory functions of the respiratory tract.
Learning objectives:
1. Enlist the non-respiratory functions of the respiratory tract
2. Briefly explain how these functions are carried out
3. Discuss the significance of dead space
4. Differentiate between minute ventilation and alveolar ventilation
5. Describe the cough and sneeze reflexes
Study Resources:
1. Chapter 39, Guyton and Hall Textbook of Medical Physiology, 14th edition
2. Chapter 34, Ganong’s Review of Medical Physiology, 26th edition
3. Chapter 17, Human Physiology by Lauralee Sherwood, 9th edition
4. Non-respiratory functions of the lungs https://academic.oup.com/bjaed/article/13/3/98/278874
Lung Cancer: Artificial Intelligence, Synergetics, Complex System Analysis, S...Oleg Kshivets
RESULTS: Overall life span (LS) was 2252.1±1742.5 days and cumulative 5-year survival (5YS) reached 73.2%, 10 years – 64.8%, 20 years – 42.5%. 513 LCP lived more than 5 years (LS=3124.6±1525.6 days), 148 LCP – more than 10 years (LS=5054.4±1504.1 days).199 LCP died because of LC (LS=562.7±374.5 days). 5YS of LCP after bi/lobectomies was significantly superior in comparison with LCP after pneumonectomies (78.1% vs.63.7%, P=0.00001 by log-rank test). AT significantly improved 5YS (66.3% vs. 34.8%) (P=0.00000 by log-rank test) only for LCP with N1-2. Cox modeling displayed that 5YS of LCP significantly depended on: phase transition (PT) early-invasive LC in terms of synergetics, PT N0—N12, cell ratio factors (ratio between cancer cells- CC and blood cells subpopulations), G1-3, histology, glucose, AT, blood cell circuit, prothrombin index, heparin tolerance, recalcification time (P=0.000-0.038). Neural networks, genetic algorithm selection and bootstrap simulation revealed relationships between 5YS and PT early-invasive LC (rank=1), PT N0—N12 (rank=2), thrombocytes/CC (3), erythrocytes/CC (4), eosinophils/CC (5), healthy cells/CC (6), lymphocytes/CC (7), segmented neutrophils/CC (8), stick neutrophils/CC (9), monocytes/CC (10); leucocytes/CC (11). Correct prediction of 5YS was 100% by neural networks computing (area under ROC curve=1.0; error=0.0).
CONCLUSIONS: 5YS of LCP after radical procedures significantly depended on: 1) PT early-invasive cancer; 2) PT N0--N12; 3) cell ratio factors; 4) blood cell circuit; 5) biochemical factors; 6) hemostasis system; 7) AT; 8) LC characteristics; 9) LC cell dynamics; 10) surgery type: lobectomy/pneumonectomy; 11) anthropometric data. Optimal diagnosis and treatment strategies for LC are: 1) screening and early detection of LC; 2) availability of experienced thoracic surgeons because of complexity of radical procedures; 3) aggressive en block surgery and adequate lymph node dissection for completeness; 4) precise prediction; 5) adjuvant chemoimmunoradiotherapy for LCP with unfavorable prognosis.
2. DISCUSSION
INTRODUCTION
Fistula is defined as an abnormal communication between two epithelialized
surfaces.
Enterocutaneous fistula is an abnormal communication between the skin with
various parts of the gut, for example duodenum, jejunum etc.
The word fistula means a “pipe” or “flute” in Latin.
The ileum is the most common site of origin of Enterocutaneous fistula.
3. Patients are usually systemically ill, with sepsis being a significant risk factor.
Spontaneous closure rate depend upon many factors like anatomy, etiology,
nutritional status, output from fistula.
Fluid and electrolyte imbalance, malnutrition, sepsis & related complications,
local wound excoriation are some of the known complications.
4. ETIOLOGY
Webster and Carey proposed five mechanisms of fistula formation :
1> Congenital : - Rare
- Due to the complete failure of Vitellointestinal duct to obliterate.
- Fecal matter at umbilicus after post natal slough of the stump.
2> Trauma :
- Major penetrating trauma to the abdomen may lead to ECF.
- Damage control laparotomy techniques have higher risk of
delayed ECF formation(2% to 25%).
5. 3> Infection : - Abscess or invasive intestinal infections like amoebiasis,
coccidiomycosis, tuberculosis etc.
- Intestinal perforation in ileum from tuberculosis or enteric fever
esp in 3rd world countries.
- Actinomyces infection post appendectomy.
4> Perforation or Injury with Abscess & Operative complications :
- Intra-abdominal abscess may erode into the gut & through the
skin.
- 75-85% are iatrogenic - after surgery for bowel obstruction,
cancer, or IBD
6. 5> Inflammation, Irradiation or Tumour :
- Crohn’s disease may cause ECF – post op more common
than spontaneous.
- ECF after anastomosis/appendicectomy/simple exploration
in Crohn’s disease.
- Irradiation for pelvic malignancies etc may lead to a chronic
non-healing ECF.
7. PREVENTION OF FISTULA
- Acute intra-operative perforations should be identified and closed.
- Serosal tears should be examined carefully and repaired if required.
- Aggressive interloop adhesion break-up should be avoided to prevent serosal
tears.
8. DIAGNOSIS OF PERFORATION AND FISTULA
-Post operatively anastomotic leaks/unrecognised perforations and
subsequent fistulae may manifest as instability or patient’s failure to improve.
-Fever, abdominal pain followed by exiting of intestinal contents from drain or
incision site.
-Occasionally,heavily purulent discharge may mask an ECF like in enteric
perforations.
-Activated charcoal or indigo carmine by mouth can help in diagnosing ECF.
- Intraluminal instillation of methylene blue and saline or direct endoscopy helps
to identify small perforations.
9. STAGING AND CLASSIFICATION
1. Anatomical Classification : Internal or External fistula(ECF).
- Internal fistulae are named after the structures it communicates
like gastrocolic, jejunoileal, aortoenteric fistula.
- External fistulae like gastric, duodenal, jejunal, ileal or fecal.
2. Physiologic classification : Based on output
- High-output > 500 cc/day (Difficulties in fluid management and
skin care)
- Moderate-output 200-500 cc/day
- Low-output < 200 cc/day (Usually colonic)
11. STABILIZATION
> The first step of management is the resuscitation and stabilization of the patient.
> Needs to be accomplished within the first 24 to 48 hours of management.
> Initial efforts directed towards intravenous fluid resuscitation, control of infection,
protection of surrounding skin & measuring and replacing ongoing losses.
> Attention should also be given to any intra-abdominal/subcutaneous abscesses
& if present they should be drained.
12. A. RESUSCITATION
> Restoration of normal circulating blood volume and correction of electrolyte
and acid-base imbalances are a top priority.
>Rehydration usually requires isotonic fluid(NS/RL) until the patient is euvolemic.
> Strict input and output measurements are essential and CVP monitoring
and urinary catheterisation are especially helpful.
> Ongoing fluid losses should be fully replaced and electrolyte imbalances
must be corrected.
13. RESUSCITATION CONTD..
> Enterocutaneous fistulae are usually associated with hypokalemia and
metabolic acidosis, which require correction.
> Electrolyte measurement of the fistula output helps in planning of
replenishment of ongoing losses.
> Urine output should be restored to greater than 0.5mL/kg/hr.
> Requirement of blood transfusion depends upon overall hemodynamic
status, patient’s oxygen carrying capacity and oxygen delivery.
14. B. NUTRITION
> In 1972, Roback and Nicholoff reported closure of 73% of enteric fistulae
in adequately nourished patients, as against 19% in inadequate ones.
> Nutritional support needs to begin as soon as the patient is stabilized.
> Nutrition can be given by parenteral or enteral route,based on the anatomy
of the fistula.
> Its advisable to provide atleast a part of the daily nutritional requirement
through enteral route.(Even 25% of daily requirement given enterally,
can help reap its benefits)
15. NUTRITION CONTD..
> Nutrition via the enteral route helps in maintaining the intestinal mucosal
barrier, more efficacious delivery of nutrients, stimulating hepatic protein
synthesis.
> WHO’s ORS (40g/L of glucose, 90 mEq/L of Na, 20 mEq/L of K) should be
given when oral intake is possible.
> In proximal fistulae, the enteral feeding tube may be entered beyond the
fistula to provide enteral nutrition(fistuloclysis).
> It is advisable to enter feeding tube beyond ligament of Treitz for a gastric
or duodenal fistula.
16. NUTRITION CONTD..
> Enteral feeds of highly absorbable, low-residue nutrients can be given if even
4ft of functional bowel exists in between ligament of Treitz and the proximal
end of the fistula.
> During the time the enteral nutrition is increasing, patient should be
supplemented with TPN.
> TPN is also given in patients who do not tolerate enteral feeds or have
long standing ileus or before fistulous tract is well established.
17. NUTRITION CONTD..
TYPE OF FISTULA
CALORIE REQ
PROTEIN REQ
Low Output
30-35 kcal/kg/day
1-2 gm/kg/day
High Output
45-50 kcal/kg/day
1.5-2.5 gm/kg/day
> Twice the daily requirement of vitamins, trace elements, zinc and upto 10 times
the daily requirement of Vitamin C should be provided.
> Short turnover proteins like retinol-binding protein, prealbumin, ferritin can be
used to monitor the weekly efficacy of protein delivery. [Alb half life is 20 days].
> Mortality rate of 42% with alb <2.5 mg/dl vs 0% if >3.5 mg/dl.
18. C. CONTROL OF SEPSIS AND FISTULA EFFLUENT
> Persistant fever, tachycardia and leukocytosis along with failure to improve
adequately points towards possible sepsis or abscesses.
> May require surgical drainage of abscess,if any along with adequate antibiotic
cover.
> Local skin care and prevention of skin excoriation by using stomahesive paste
or aluminium paint etc along with stoma bags.
> Excessive fistula output can be controlled by nasogastric tube placement,
withdrawal of oral feeds, initiation of parenteral nutrition or placement of
sump suction catheter as described by Suripaya and Anderson,1971.
19. C. CONTROL OF SEPSIS AND FISTULA EFFLUENT CONTD..
> Vacuum assisted closure [VAC] device drainage system maybe used too.
> Due to the negative pressure application, VAC device helps to control drainage,
minimizes the size of the abdominal wound, reduces frequency of dressing
and protects the skin while helping to promote fistula healing.
> For majority of ECFs, VAC devices have become the method of choice for
controlling fistula drainage and skin protection.
20.
21. D. PHARMACOLOGICAL SUPPORT
> Somatostatin analogue Octreotide, at doses of 100 – 250 mcg TDS reduces
fistula output by 40 – 60% by the end of 24 hrs.
> Should be discontinued if ineffective for 48 hrs as it has side effects like
hyperglycemia, elevated cholesterol and reduced bowel motility.
> Octreotide and TPN seem to have a synergistic effect on reduction of effluent
volume and improvement in fistula closure rates.
> Proton-pump inhibitors and H2 receptor antagonists also help reduce fistula
output especially in proximal fistulas.
22. D. PHARMACOLOGICAL SUPPORT CONTD..
> Cyclosporine in doses of 4 mg/kg/day for 6 – 10 days followed by oral doses
of 8 mg/kg/day helps to treat refractory fistulae associated with Crohn’s disease.
> Other drugs used include Tacrolimus, Azathioprine, 6-MP, Infliximab(mAb TNFα).
> Infliximab administered at a dose of 5 mg/kg iv at 0,2,6 weeks helped in partial
resolution of 68% of multiple lesions and complete closure in 55% of patients.
> Complications include URTI, headache, fatigue etc.
23. INVESTIGATIONS
> Investigations are done for the next 7 to 10 days following stabilization.
> They are carried out to determine the presence and location of the fistula,
its cause and presence of comorbidities.
> Oral administration of Indigo Carmine/ Charcoal helps in diagnosing the
presence of a fistula,but not its location, cause or anatomy.
> USG abdomen helps in locating intra-abdominal abscesses, apart from
helping in performing guided aspiration of intra-abdominal collections.
24. > Fistulography helps in defining the length & width of the fistula, its anatomical
location, the presence of any distal obstructions etc.
> It can be performed by entering a small cathter into the fistulous tract and then
injecting the water-soluble contrast under fluoroscopy.
> Fistulogram should be performed before an upper GI series or CT scan with
oral contrast or contrast enema as it poses difficulty in interpretation.
> Fistulography should be followed up with a complete contrast study of the
GI tract.
25.
26. CT scan of the abdomen with IV and oral contrast is highly sensitive and specific
for locating the fistula, defining its anatomy, commenting on the gut surrounding
fistula, presence of any intra-abdominal abscess or distal obstruction/pathology.
CT scan is highly recommended for duodenal and pancreatic fistula.
CT scan can be therapeutic by helping in CT-guided aspiration of intra-abdominal
abscesses,if any.
Endoscopy may also be used occasionally though its principal use is in internal
fistulas.
Endoscopy is usually delayed till acute inflammation gets reduced.
27. DECISION
FACTORS RESPONSIBLE FOR SPONTANEOUS CLOSURE
Factor
Favorable
Unfavorable
Organ of origin
Esophageal, Duodenal stump,
Pancreatic, Biliary, Jejunal,
Colonic
Gastric, Lateral duodenal,
Ligament of Treitz, Ileal
Etiology
Postop (anast leak), Appendicitis,
Diverticulitis
Malignancy, IBD
Output
Low (<200-500cc/day)
High (>500cc/day)
Nutritional status
Well nourished, Transferrin >200
Malnourished, Transferrin
<200
Sepsis
Absent
Present
State of bowel
Intestinal continuity, absence of
obstruction
Diseased adjacent bowel,
Distal obstruction, Abscess,
Discontinuity, Irradiation
Fistula characteristics Tract >2 cm, Defect <1cm
Tract <1cm, Defect >1cm
Miscellaneous
Referred from outside
institution
Original operation at same
institution
28. > Reber et al reported that more than 90% of small intestinal fistula which
closed spontaneously,did so within a month.
> Spontaneous closure rates dropped to less than 10% after 2 months and
none after 3 months.
> Factors possibly responsible for failure of spontaneous closure are:
a. Foreign Body
b. Radiation
c. Inflammation/ infection
d. Epithelialisation
[F-R-I-E-N-D-S]
e. Neoplasm
f. Distal intestinal obstruction
g. Steroids.
29. DEFINITIVE THERAPY
> Majority (80-90%) will close within 6 weeks with conservative management.
> Surgery between 10 days and 6 weeks post-op will encounter the worst
adhesions.
> Preferably wait upto 6 weeks before open exploration and repair of defect,
but in case of faecal fistula, due to intense inflammation, it is prudent to wait
upto 10-12 weeks.
> The patient should,by then, be nutritionally optimized, patient should not be septic
and patient should be vitally stable.
30. > Definitive operative correction remains the final step in the treatment of
non-healing small intestinal fistulas.
> In majority of the cases, preferred operation is resection of the involved segment
with primary end-to-end anastomosis. (Reber HA, 1978)
> However if primary anastomosis is not possible,then both the proximal and
distal ends of intestine are exteriorized.
> In case the fistula is deemed inappropriate for resection, such as when it
develops after a deep pelvic procedure, staged approach involving bypass
should be considered.
31. > In a staged procedure, the fistulous segment is left in-situ or the ends are
exteriorized as mucous fistula and the afferent and efferent bowel loops
are anastomosed to restore intestinal continuity.
> The staged procedure is completed when the fistula segment is removed at
a later date,although it may not always be possible.
> Enteroatmospheric fistulas, which are associated with large abdominal defects
are very difficult to manage and are associated with high mortality rates.
> Mortality rates may vary from 20% to 60%. (Schein M, Decker GA 1991)
> Enteroatmospheric fistulas usually require multiple staged operations.
33. > Enterocutaneous fistula treatment is complicated due to various factors like
open abdominal wound leading to desiccation of gut loops, presence of
multiple fistulous openings, dressings adhering to the gut loops etc.
> VAC devices are used initially to approximate the large abdominal defect
along with isolation of the fistula(s) by ostomy bags.
> After proper granulation tissue formation, the stabilized patient can be
considered for SSG, if his nutritional status is favourable.
> After 6 to 12 months recovery time to replenish protein and calorie stores,
resection of the fistula as definitive therapy can be provided to the patient.
> Musculocutaneous flaps, abdominal wall reconstruction by component
separation technique, use of prosthetic materials,esp biologics may also
be necessary. (human acellular dermal matrix)
34.
35. > In 1995, Ho HS and Frey CF used primary closure of gastric fistula with
delayed external drainage as treatment for gastric fistulas.
> If the gastric fistula defect is too large to allow primary closure,then a
Roux-en-Y gastrojejunostomy may be done.
> Duodenal fistulas are usually treated with tube duodenostomy or Roux-en-Y
duodenojejunostomy.
> A feeding jejunostomy distal to the enteroenterostomy should always be
considered.
38. CONCLUSION
> Enterocutaneous fistulas are abnormal communication between the gut
and skin.
> Majority of the ECF are due to iatrogenic causes (70-85%). Others include
trauma, congenital causes. Spontaneous ECF may arise due to Crohn’s
disease.
> Malnutrition, Electrolyte imbalances, acid-base imbalances and sepsis are
the major causes of mortality in ECF.
> After initial stabilization of the patient by resuscitation( fluid, electrolytes,
blood transfusions etc), the patient is subjected to various investigations
to determine the location& anatomy of fistula, presence of distal obstruction
etc.
39. > Enteral nutrition is always preferable to parenteral nutrition provided the
patient tolerates enteral feeds.
> Local wound care by application of ostomy bag and pastes are essential.
> Drainage of intra-abdominal abscesses, treatment of sepsis is of utmost
importance.
> After proper optimization, patient undergoes definitive therapy which
includes resection of the fistulous segment of the gut.
> ECF with large abdominal defects may require VAC devices/ biologic mesh
SSG to help close the defect.