PEDS Flashcards
Name the acynotic defeacts
- VSD
- ASD
- PDA
- Pulmonary stenosis
- Aortic stenosis
- coartcation of aorta
- Atriovetricular septal defect
cyanotic defects are:
TOF
Transposition of great vesssel
Truncus
“all start with T”
what type of shunt are “blue babies”
right to left
all the 3 T’s
what type of shunts are “blue kids”?
left to right shunts
Late developing shunting -
VSD
ASD
PDA
frequency of Left to right shunt in order:
VSD > ASD > PDA
most common congenital cardiac anomaly is?
VSD
describe Eisenmenger’s Syndrome:
Uncorrected VSD, ASD, or PDA leads to progressive pulmonary hypertension (too much blood is going to lungs, ultimately lungs clamp down). As pulmonary resistance increases, the shunt reverses from L –> R to R –>L, which causes late cyanosis (clubbing and polycythemia)
quick way to describe eisenmenger’s syndrome -
Shunt reversal
ASD is a congenital “hole” in the
septum b/w atria
what are complications of uncorrected ASD?
Pulm HTN
Eisenmenger’s Disease
with ASD, what part of the heart is working harder?
RV - receiving more blood
AVOID the during repair of VSD:
-arrhythmia
RV dysfunction
Pulmonary vascular obstructive disease
paradoxical embolus
with Coarctation of aorta, which BP is accurate?
radial
femoral would be absent
normal flow to UE; lower flow to LE
PDA
Persistence of connection between pulmonary artery and aorta
L–> R shunt
Blood flow from aorta to pulmonary artery.
Additional blood is re-oxygenated in lungs and return to LA and LV –> increase work load –> LVH
Continuous murmur “machinery”
Small defect– No symptoms
Large defects
CHF
Delayed growth
Infections
Treatment
Surgical ligation
COX-1,COX-2 inhibtors and indomethacin “medical ligation”
PDA
describe a PDA murmur
Continuous (both systolic and diastolic)
“Machinery”
in a child with PDA; how is the SPO2 monitored?
%?
Preductal (right hand) and Postductal (foot) O2 saturation difference = 3%
High >10% in
Increase right to left shunt (Pulmonary hypertension)
MC congenital heart disease causing cyanosis
Four features
Pulmonary stenosis – RV outflow obstruction
Overriding aorta (aorta comes out both from left ventricle and right ventricle ( BIG AORTA)
Large VSD
Right ventricular hypertrophy
Right ventricular outflow obstruction + VSD result ejection of mixed blood into the aorta
TOF
Clinical presentation Cyanosis Squatting A position that increases systemic vascular resistance and aortic pressure, which right-to-left ventricular shunting and thus arterial O2saturation. Dyspnea Hypercyanotic and hypoxic spells ( TET spells) PO2 < 50 mmHg during feeding or crying Unresponsive to supplemental O2 PE RV heave Harsh systolic ejection murmur
tof
in TOF, squatting pt. tries to decrease the shunt so
lungs can get more blood
Anesthetic management of TOF
Maintain intravascular volume and SVR
Avoid INCREASE in pulmonary vascular resistance (e.g. by N2O)
Ketamine is used because it maintains or INCREASES SVR and therefore does not aggravates R–> L shunt
VA and histamine-releasing drugs DECREASES SVR and INCREASES shunt
Phenylephrine INCREASES SVR and Reducing shunt
what is the name of the procedure required to repair tricuspid atresia?
fontan procedure
Conotruncal separation does not occur, one trunk
Truncus Arteriosus
Pulmonary veins-->RA via; instead of going to left atrium Coronary sinus --> RA Innominate--> SVC Portal vein--> IVC Combination of routes R->L shunt across ASD
Clinical presentation:
Cynosis
Tachypnea
Dyspnea
X-ray- Snowman shaped heart
Surgery- redirection of veins
Total anomalous pulmonary venous return TAPVR
Gut herniate into thorax through ‘hole’ in diaphragm in CDH is known as:
Foramen of Bochdalek or Morgagni
CDH Anesthetic consideration NG tube Avoid high pressure PPV Pre-oxygenation Decrease conc. of VA, muscle relaxant Nitrous oxide (N2O) is contraindicated High risk of pneumothorax --> avoid barotrauma Chest tube
know what to do and what NOT to do
***Positive pressure ventilation (PPV)
Types of Tracheoesophageal fistula. What is the most common
Type IIIB
Anesthesia consideration for Tracheoesphageal Fistula
- Need frequent suction due to INCREASE secretion
- Avoid PPV
- Awake intubation
cause of polyhydraminos?
excessive amount of amniotic fluid
-eeophageal atresia – baby no swallowing it so an increased level
cause of oligohydraminos?
lack of amniotic fluid
- kidney issue or development delay
Tell me about paradoxic aciduria
high alkalosis
- low ph of urine
- opposite effect
- extreme alk and extreme shock
… finish