Gastric Bypass Diet - Phase One: Liquids
Upon discharge from the hospital, the patient
is to be on a liquid diet that includes high
protein, low calorie liquids. The bariatric
dietitian instructs the patient on how to
meet his or her protein and fluid needs during
this phase of the diet.
The patient is on the liquid diet for 10
to 14 days after surgery. It is essential
to include a high protein, low calorie drink
and/or a powder protein product mixed with the
allowed beverages to achieve the recommended
minimum intake of 60 grams of protein each day.
- Beverages allowed on the liquid diet :
- Water
- Skim milk or 1% milk (8oz
contains 8 grams protein)
- Soy milk (8oz contains 7 grams
protein)
- Fat-free or low fat Lactaid milk (8oz
contains 8 grams protein)
- 100 percent fruit juice (diluted with
water – 4oz water and 4oz juice)
or lite juice
- Broth
- Thin cream soups made with allowed milk
(strain before eating)
- Sugar-free beverages
- Sugar-free gelatin
- Sugar-free or low sugar ice popsicles
- Decaf Coffee, Decaf Tea
- Daily fluid requirements – Drink
48 to 64 ounces of liquid each day. This
is equal to six to eight – 8 oz cups
of liquid each day.
- Drink slowly to avoid discomfort
or vomiting.
- Stop if you feel full.
- Drink sugar-free beverages. Avoid
sweetened beverages.
- Avoid carbonation, causes bloating
or gas
- Do not use a straw. Drinking with
a straw can overfill your pouch with
air.
- Limit caffeine intake.
- Protein products recommended for use
on the liquid gastric bypass diet:
- Protein powders mixed with allowed
liquids There
are many brands of protein powders
available. The most popular are made
with whey protein or soy protein and
come in a variety of flavors. The protein
content of each product will vary depending
on how the product is prepared and
what liquid is selected to prepare
the drink.
- Each scoop of powder typically
supplies ~ 20 grams of protein, some
products contain more protein/serving
and some may contain less. Refer
to the “nutrition facts” label
on each product for complete information.
Prior to surgery select several products
to try and show your health care
team the protein products you have
selected to use. Several popular
products are listed for your review:
- Zero Carb Isopure (Nature’s
Best) 100 percent whey protein isolate
available as a powder, 3 lb container (one
scoop contains 25 gms protein, mix with water)
or a 20 oz bottle beverage (40 gms protein/
20 oz) Available in a wide variety of flavors.
- GNC 100% Whey Protein (General
Nutrition Center) available in 1
lb and 1.5 lb containers and in
an assortment of flavors. One scoop
provides 21 grams protein.
- Nectar (Syntrax)
contains whey protein isolate
(one scoop contains 23 grams protein)
and is available in a variety of
flavors.
- Carb Conscious Carnation
Instant Breakfast This is a nutritional
supplement that comes in a powdered
and liquid form.
- Powder
packet (4 grams protein) mixed
with skim or 1 percent milk contains
(8 grams of protein) provides 12
grams of protein per 8oz serving.
- Non-fat dry milk powder Several
tablespoons (2T = 5 grams protein)
can be added to 8oz of 1% or
skim milk to increase the protein
content without changing the taste.
An 8oz glass of milk mixed with 2T non-fat
dry milk powder contains 13 grams of protein.
- Begin multivitamin and calcium supplements :
- Multivitamin - begin taking an
adult chewable daily multivitamin when
you get home from the hospital.
- Calcium citrate supplements – calcium
tablets must be crushed with
a pill crusher. Calcium citrate products
are recommended and should be taken
in divided doses, (not more than 600mg
calcium at any one time), to enhance absorption.
A total of 1200 –1500mg per day
of calcium is recommended.
- The physician will tell the patient
when to start:
- Vitamin B12 supplementation
is usually started two
months after surgery. Use of a daily
500 microgram sublingual tablet or
monthly injections of 1000 micrograms
must be continued on a regular basis
to avoid long-term neurological damage.
- Iron supplementation (325
mg ferrous sulfate)
is required for pre menopausal women
and is started approximately 4 weeks
after surgery.
- Folic Acid is required
for women of childbearing
age. A supplement
containing 400 microgram
per day is recommended to
start approximately
one month after surgery.
The patient will return to the doctor’s
office for a follow-up visit 10-14
days after discharge. The surgeon and clinical
dietitian specialist will evaluate the patient’s
dietary protein and fluid intake. If the patient
is tolerating the diet he or she
will be advanced to the pureed phase
of the gastric bypass diet.
We offer post-operative patient support
groups and nutrition classes. If
you are interested please call
our office at (215) 662-9198
to schedule your classes.
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