Fact sheetDiet specifications

Published: November 2011. Next review: 2024.


Post procedure diet - bariatric surgery (soft)

This document is part of the ACI Diet Specifications for Adult Inpatients. It is not to be used for patient education.

Aim

Prevent gastrointestinal symptoms and complications by providing a soft foods diet for patients who have successfully transitioned past the bariatric puree diet around four weeks after bariatric surgery.

Characteristics

Foods may be naturally softer or cooked to alter texture. Food should be moist, easily crumbled or served with a low-fat sauce or gravy to increase moisture content. Foods should be high protein and low glycaemic index. High-fat and high-energy foods are to be avoided. The texture of this diet is consistent with the soft-dental / easy-to-chew diet.

The meal plan is designed to limit range of choice and restrict portion sizes to control the volume of food served.

  • Three main meals will be served daily – with only three items provided at each meal. These include:
    • for breakfast, a cereal, hot breakfast choice and drink
    • for lunch and dinner, a hot main meal or soup, low-fat yoghurt and drink.
  • Three mid-meals will be served daily, with only one item provided at each mid meal. This includes either soft fruit or low-fat yogurt or skim milk or a high protein supplement.
  • Water can be served in addition to the above items.
  • Hot main meals are restricted to half serves and should provide ≥10g protein per serve.
  • Plated main meals will consist of a half serve of the hot main, one half serve of vegetables and one half serve of starchy vegetable or pasta. This will equate to a maximum plate serve of 155g. The low-fat yoghurt and beverage will be allowed in addition.

Indications

Post-bariatric surgery, as clinically indicated or as per surgeon’s recommendations, for example, suggested for weeks four to eight, after tolerating the post-procedure diet - bariatric surgery (puree).

Nutritional adequacy

This diet is low in all nutrients and should not be used as the sole source of nutritional support for an extended period without supervision by a dietitian. Patients will require assessment and monitoring by a dietitian during the admission. Patients will require vitamin and mineral supplementation. Chewable or liquid forms are preferable, if available.

Precautions

Not suitable for patients immediately following, or for weeks one to three, after bariatric surgery. This diet should be transitioned after successful tolerance of bariatric clear fluids, bariatric full fluids and bariatric puree diet.

Paediatrics

Suitable for use in adolescents (≥15 years) when combined with an age-appropriate diet. However, it is noted that surgery can be considered at 14 years of age in exceptional circumstances.

Sample menu

Meal 
Breakfast
  • 1 Weet-Bix and skim milk or ½ cup rolled oats
  • ½ serve scrambled egg
  • Low-joule cordial
Lunch

    Soft meat/fish/chicken with gravy/sauce (75g small serve) and soft vegetable (35g small serve) and soft starch option (45g small serve) or soup (180ml serve)

  • Low-fat yoghurt 125g
  • Low-joule cordial
Dinner
  • Soft meat/fish/chicken with gravy/sauce (75g small serve) and soft vegetable (35g small serve) and soft starch option (45g small serve) or soup (180ml serve)
  • Low-fat yoghurt 125g
  • Low-joule cordial
Mid meals

1 item per mid-meal

  • 125g soft fruit or
  • 125g low-fat yoghurt or
  • High protein supplement or
  • skim milk to drink

Specific menu planning guidelines

Allowed Not allowed
Hot main dishes

Soft dishes, e.g., casseroles, crepes

Tender sliced meats

Well-cooked legumes, e.g., baked beans

Soft falafel

Soft rissoles

Fish soft enough to break into pieces with a fork or spoon, e.g., poached, soft fish, fish cakes

All dishes to be served with a low-fat sauce or gravy

Soft choices to contain 10g protein per serve and ≤10g fat per serve

Fried foods

Fatty meats, e.g., sausages, bacon

Meat that is tough, stringy or has rind or gristle

Dishes with pastry or a hard base, e.g., pizza, quiche, pie

Dishes with crisp topping

Foods cooked with cream-based sauces

Sauces, gravies Smooth, low-fat sauces and gravies (≤1g fat per serve)

Cream-based sauces

Any with seeds or lumps, e.g., onion, honey mustard or fresh tomato sauce

Starchy vegetables / pasta / rice

Mashed potato

Soft pasta

Other potato

Rice

Noodles

Pasta / vegetable bakes with crisp or crunchy tops

Vegetables

Small serves of soft / mashed vegetables

Standard vegetable serves sizes

Hard raw, crisp or crunchy vegetables, e.g., some stir fry

Soups

High-protein soups containing 5g protein per serve and ≤8g fat per serve

Cream-based soups

Clear soups

Sandwiches None All
Salads, dressings None All
Breads, cereals

Rolled oats, semolina

Cereals without nuts, seeds or grains

Unprocessed bran

All bread

All other cereals

Spreads None All
Hot breakfast choices

Scrambled egg, poached egg, or baked beans

All others
Fruit

Canned or stewed fruit

Soft fresh fruit, e.g., bananas, pawpaw, oranges, mandarins

Soaked prunes (no seed)

Grapes

Other hard or unripe fresh fruit, e.g., apple

Dried fruit

Yoghurt

Fat-free or low-fat yoghurt with soft fruit pieces

All others including those with dried fruit or hard nuts or seeds
Desserts None All
Milk and cheese Skim milk

Other milk

All cheeses

Beverages

Water

Low-joule cordial

Strained vegetable juices

Tea and coffee

All others including fruit juices, cordial and carbonated soft drinks

Biscuits None All
Miscellaneous

Commercial low-fat, high-protein supplements

Pepper, sweetener

Milk powder or protein powder may be added to drinks or soups to increase protein content

Sugar, cream

Salt

Confectionary and chewing gum

References

  1. Academy of Nutrition and Dietetics (USA). Nutrition Care Manual. Cleveland: Academy of Nutrition and Dietetics. [cited September 2020]. Online subscription required.
  2. Allied Health Sciences Section Ad Hoc Nutrition Committee: Aills L, Blankenship J, Buffington C, Furtado M, Parrott J. ASMBS Allied health nutritional guidelines for the surgical weight loss patient. Surg Obes Relat Dis [Internet]. 2008 Sep-Oct [cited month year] 4:S73–108. DOI: 10.1016/j.soard.2008.03.002
  3. Dietitians Association of Australia. Nutrition manual. 9th ed. Canberra: DAA; 2014. [cited April 2023 year].
  4. Shannon C, Gervasoni A, Williams T. The bariatric surgery patient – Nutrition considerations. Aust Fam Physician. 2013 August [cited April 2023] 42(8):547-52.
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